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- Previous
  - 1
    - How can I shorten the time of the linking process Hi! I created a Dll project using visual c++ 6 (no mfc). When I'm linking my project (after the compilation step) on "debug version", (the "Link Incrementally" option is enabled") it take 5-10 seconds. (The size of the output Dll is ~ 8mb ). When I'm changing the project mode to "Release version", the linking process becomes very slow ( it takes ~20 minutes!!! and sometimes even more - size is ~ 3.5 mb ). When I'm enabling the "Link Incrementally" it returns to take only 5 to 10 seconds... I tried to anylise the linking process by using "Print Progress Messages" option, but I didn't understand from it. I saw it hangs for ~10 minutes before it prints this: Selected symbol: "void __cdecl operator delete(void *,void *)" (??3@YAXPAX0@Z) from One.obj Replaced symbol(s): "public: __thiscall ObjCReturn::~ObjCReturn(void)" (??1ObjCReturn@@QAE@XZ) from Base.obj "public: __thiscall ObserverA::~ObserverA(void)" (??1ObserverA@@QAE@XZ) from Orient.lib(ObserverG.obj) Can someone help me? How can I shorten the link process on the Release Version? Thanks, Maoz Tag: #pragma pack (push, 1) Tag: 251849
  - 2
    - How to convert CStringA which contains embedded NULL chars into a Hi All, The variable str was defined as CStringA type, and it contains 57 chars with embedded NULL chars copied from some memory buffer, now I want to convert it into a BSTR string using the following statements: 1) int nLen = str.GetLength(); 2) int nChars = MultiByteToWideChar(CP_ACP, NULL, str, nLen, NULL, NULL); 3) bstr = SysAllocStringLen(NULL, nChars); 4) MultiByteToWideChar(CP_ACP, NULL, str, nLen, bstr, nChars); at line#1 I got nLen 57, but at line#2, I got nChars 50, why nChars should not be 57? Am I doing something wrong? PS: The str is "50 4b 01 02 14 00 14 00 02 00 08 00 60 8b 16 33 00 00 60 8b ff ff ff ff 00 00 00 00 00 00 00 00 00 00 00 00 ff ff 00 00 00 00 00 00 00 00 bb b0 fb c2 ee 9d 8f 0e de 04 00 00" TIA Tag: #pragma pack (push, 1) Tag: 251843
  - 3
    - GetAdaptersAddresses problem Hello, All! Why when I call the GetAdaptersAddresses function it does not return any IP addresses as it should? Because I need both IP address and the connection name (not adapter name), I have to use the GetAdaptersAddresses function along with the GetAdaptersInfo function to get all I need. --- With the best regards, Mahoney. Tag: #pragma pack (push, 1) Tag: 251839
  - 4
    - Problem with threads calling a function Hi all, I'm developing a program in C++ (pure API style, no MFC) and seem to have the following issue with multithreading: The program is performing extensive calculations which take a long time, they also can produce messages. On multiprocessormachines, I start several threads (up to the amount of processors in the system) which work on the problem in parallel. My problem however comes in when one of the threads tries to log an event with my own event log (note this has nothing to do with the windows eventlog). My eventlog is a simple procedure which just writes some text and a timestamp into a listview on the main window of the application: void Log_Event(char* cMessage, int iCat) { LVITEM lvi; SYSTEMTIME st; int iSize; TCHAR* cTime; TCHAR* cDate; TCHAR* cBuf; //get the current date and time GetLocalTime(&st); //and format it according to the user preferences (works internationally, even in retro america) iSize = GetDateFormat(LOCALE_USER_DEFAULT, 0, &st, NULL, NULL, 0); cDate = (TCHAR *) calloc(iSize, sizeof(TCHAR)); GetDateFormat(LOCALE_USER_DEFAULT, 0, &st, NULL, cDate, iSize); iSize = GetTimeFormat(LOCALE_USER_DEFAULT, 0, &st, NULL, NULL, 0); cTime = (TCHAR *) calloc(iSize, sizeof(TCHAR)); GetTimeFormat(LOCALE_USER_DEFAULT, 0, &st, NULL, cTime, iSize); cBuf = (TCHAR *) calloc(strlen(cDate) + strlen(cTime) + 4, sizeof(TCHAR)); strcat(cBuf, cDate); strcat(cBuf, " "); strcat(cBuf, cTime); lvi.mask = LVIF_TEXT | LVIF_PARAM | LVIF_IMAGE; lvi.iItem = 0; lvi.iImage = iCat; lvi.iSubItem = 0; lvi.pszText = NULL; ListView_InsertItem(GetDlgItem(ghWnd, IDC_LV_EVENTLOG), &lvi); ListView_SetItemText(GetDlgItem(ghWnd, IDC_LV_EVENTLOG), 0, 1, cBuf); ListView_SetItemText(GetDlgItem(ghWnd, IDC_LV_EVENTLOG), 0, 2, cMessage); free(cTime); cTime = 0; free(cDate); cDate = 0; free(cBuf); cBuf = 0; } In order to synchronize access to the Event_Log function, I have a critical section object. This is how the threads are calling the function: ... EnterCriticalSection(&csLogEvent); Log_Event(cBuf, LE_WARNING); LeaveCriticalSection(&csLogEvent); ... The problem now appears to be that the Event_Log functions simply hangs on the line where it does the Listview_InsertItem. That sends all threads to a grinding halt, even those that are not logging any events. It also stops of there is only one worker thread, thus precluding any synchronization issues (in my opinon?). I should also note that the Event_Log function worked properly before I implemented the multithreaded option. I'm really stuck here, any help is greatly appreciated! Cheers - Balt Tag: #pragma pack (push, 1) Tag: 251831
  - 5
    - Lexical Parser Hi, I am building a lexical parser, But I used recursive file opening like this main () { ProcessFile(filename); } and somewhere in between ParseFile() { GetFileName(&FileName); // branching statement, So if FileName is necessary to be recursively opened, the following statement gets executed ProcessFile (FileName); } ProcessFile (char *filename) { f = fopen (filename...); // when in recursion, this returns null ParseFile(); } Is this "Cross-edge" Possible? Thanks J Tag: #pragma pack (push, 1) Tag: 251830
  - 6
    - How to access the source of a copied object I want to have a reference to the source object in the receiving object after a copy (Copy ctr or assignment). I dont want the receiving object to be able to modify contents in the copied object. How should i do this? Here is my first stab at a solution, but its not working. Its the dynamic downcast from Base* to SubA* that fails when i run. I want to use a dynamic cast since i sometimes need to do a runtime check to see if an object is if a certain type. I need to do a downcast to be able to check the values of the original (source) object. So how can i have access to the source object, use it as the downcasted subtype ,and restrict that access to be read-only. class Base { public: Base() : sourceObj(NULL) {} virtual ~Base() {} Base(const Base& other) { *this = other } Base& operator=(const Base& other) { sourceObj = &other; return *this; } protected: const Base* sourceObj; } class SubA : Base { public: SubA() : Base() {} ~SubA() {} SubA(const SubA& other) : Base(other) {} int anAttribute; void checkAttributeOfSource() { // Line below casts an error when run in MS VC++ .NET SubA* a = dynamic_cast<SubA*>(sourceObj); if (a->anAttribute = 1) { // do something } } } // ---- Main snippet -------- Base* aBase = new SubA(); // Line below casts an error when run in MS VC++ .NET SubA* aSub = dynamic_cast<SubA*>(aBase); // --- Scenario B SubA a1.readFromdatabase(); SubA a2(a1); a2.ReadFromClient(); // Here i want to be able to query values in a1 without modifying a1 a2.CompareMeTosourceObject(); Tag: #pragma pack (push, 1) Tag: 251828
  - 7
    - Icon display in Win 2000 and Win XP Hi, The taskbar icon of my application is visible in Win XP but not in Win 2000. What could be the various reasons for this?? Tag: #pragma pack (push, 1) Tag: 251827
  - 8
    - How can I use CreateProcess() to get another application`s result?? Hello everyone: I want to use CreateProcess() call another application, and save the result in a text file.I can surely exeute the application,but there is nothing data in the text file.why?? Could you please give me the code example? Thank you! //window message process function LRESULT CALLBACK WndProc(HWND hwnd,UINT msg,WPARAM wParam,LPARAM lParam) { static STARTUPINFO si; static PROCESS_INFORMATION pi; static HANDLE hFile; static SECURITY_ATTRIBUTES sa; sa.bInheritHandle = TRUE; hFile = CreateFile("C:\\Tracert.txt",GENERIC_WRITE,FILE_SHARE_WRITE, &sa,CREATE_ALWAYS,FILE_ATTRIBUTE_NORMAL,NULL); si.dwFlags = STARTF_USESTDHANDLES; si.hStdOutput = hFile; switch(msg) { case WM_CREATE: CreateProcess("C:\\WINNT\\System32\\tracert.exe"," www.163.com", NULL, NULL, FALSE,0, NULL, NULL, &si, &pi); return 0; case WM_PAINT: return 0; case WM_DESTROY: CloseHandle(hFile); PostQuitMessage(0); return 0; } return DefWindowProc(hwnd,msg,wParam,lParam); } Tag: #pragma pack (push, 1) Tag: 251822
  - 9
    - Defining template class member functions in a separate module I have been having link problems (see my previous post) and I got around to trying one by one, different combinations since I absolutely could not figure out why things weren't working. I have done exactly the same type of thing before and it worked like a charm! I got around to wondering finally if it could be a problem with the way I have organized things. Let's assume a template class declaration as follows: template<typename DeallocType> class DefaultDeallocator : public virtual Deallocator<DeallocType> { public: DefaultDeallocator(); virtual ~DefaultDeallocator(); virtual void Delete(DeallocType*); virtual void DeleteObjectArray(DeallocType*); virtual void DeletePointerArray(DeallocType**, unsigned long); }; This is in a header called DefaultDeallocator.h (duh! :) I have the definition in a module called DefaultDeallocator.cpp. template<typename DeallocType> DefaultDeallocator<DeallocType>::DefaultDeallocator() { } template<typename DeallocType> DefaultDeallocator<DeallocType>::~DefaultDeallocator() { } template<typename DeallocType> void DefaultDeallocator<DeallocType>::Delete(DeallocType* obj) { if(NULL != obj) { delete obj; } } template<typename DeallocType> void DefaultDeallocator<DeallocType> ::DeleteObjectArray(DeallocType* array) { if(NULL != array) { delete[] array; } } template<typename DeallocType> void DefaultDeallocator<DeallocType> ::DeletePointerArray(DeallocType** ptrarray, unsigned long num) { if(NULL != ptrarray && num > 0) { for(unsigned long i = 0; i < num; ++i) { delete ptrarray[i]; } } } Could it be that because the definition is in a module as opposed to being completely in the header itself, that I am getting unresolved external link problems. Here are my errors: Creating library Debug/SmartPointer2.lib and object Debug/SmartPointer2.exp Test.obj : error LNK2019: unresolved external symbol "public: virtual __thiscall MCMDocumentCache::DefaultDeallocator<class MCMDocumentCache::ReferenceCounter>::~DefaultDeallocator<class MCMDocumentCache::ReferenceCounter>(void)" (??1?$DefaultDeallocator@VReferenceCounter@MCMDocumentCache@@@MCMDocumentCache@@UAE@XZ) referenced in function "void __cdecl Test_Deallocator_Construction(void)" (?Test_Deallocator_Construction@@YAXXZ) Test.obj : error LNK2019: unresolved external symbol "public: __thiscall MCMDocumentCache::DefaultDeallocator<class MCMDocumentCache::ReferenceCounter>::DefaultDeallocator<class MCMDocumentCache::ReferenceCounter>(void)" (??0?$DefaultDeallocator@VReferenceCounter@MCMDocumentCache@@@MCMDocumentCache@@QAE@XZ) referenced in function "void __cdecl Test_Deallocator_Construction(void)" (?Test_Deallocator_Construction@@YAXXZ) Test.obj : error LNK2019: unresolved external symbol "public: virtual void __thiscall MCMDocumentCache::DefaultDeallocator<class MCMDocumentCache::ReferenceCounter>::Delete(class MCMDocumentCache::ReferenceCounter *)" (?Delete@?$DefaultDeallocator@VReferenceCounter@MCMDocumentCache@@@MCMDocumentCache@@UAEXPAVReferenceCounter@2@@Z) referenced in function "void __cdecl Test_Deallocator_Delete(void)" (?Test_Deallocator_Delete@@YAXXZ) Test.obj : error LNK2019: unresolved external symbol "public: virtual void __thiscall MCMDocumentCache::DefaultDeallocator<class MCMDocumentCache::ReferenceCounter>::DeleteObjectArray(class MCMDocumentCache::ReferenceCounter *)" (?DeleteObjectArray@?$DefaultDeallocator@VReferenceCounter@MCMDocumentCache@@@MCMDocumentCache@@UAEXPAVReferenceCounter@2@@Z) referenced in function "void __cdecl Test_Deallocator_DeleteObjectArray(void)" (?Test_Deallocator_DeleteObjectArray@@YAXXZ) Test.obj : error LNK2019: unresolved external symbol "public: virtual void __thiscall MCMDocumentCache::DefaultDeallocator<class MCMDocumentCache::ReferenceCounter>::DeletePointerArray(class MCMDocumentCache::ReferenceCounter * *,unsigned long)" (?DeletePointerArray@?$DefaultDeallocator@VReferenceCounter@MCMDocumentCache@@@MCMDocumentCache@@UAEXPAPAVReferenceCounter@2@K@Z) referenced in function "void __cdecl Test_Deallocator_DeletePointerArray(void)" (?Test_Deallocator_DeletePointerArray@@YAXXZ) Debug/SmartPointer2.exe : fatal error LNK1120: 5 unresolved externals If my supposition is correct, that kind of seems funny. Supposing I were distributing a library and I didn't want to expose my implementation, what would I do? thanks, -vijai. Tag: #pragma pack (push, 1) Tag: 251820
  - 10
    - Code compiles with VS2003 but not eVC4 Hi, The following code compiles fine with VS 2003 but not with eVC4 SP4. I am not sure VS.NET is right since the situation is kind of ambiguous. Basically, we have a MultiEar class derive "twice" from the same IListener interface - we do that by aliasing the interface with AListener and BListener. Two separate vtables should be produced, but... eVC4 does not seem to think so. Here is the code: // interiorListeners.cpp : Defines the entry point for the console application. // /* this test investigates what happens when you need to have multiple implementations of a base class in a derived class. Questions: Is this legal C++? Is the intent of the syntax clear? Should it work on all C++ compilers? */ #include "stdafx.h" /** first declare a listener interface */ class IListener { public: virtual void OnEvent(const char * name, int id)=0; }; /* a class we can listen too */ class EventSource { public: EventSource(const char * name) : m_name(name) { m_listener = NULL; } void fireEvent(int id) { if (m_listener) m_listener->OnEvent(m_name, id); } void addListener(IListener* listener) { m_listener = listener; } private: IListener* m_listener; const char * m_name; }; /* derived classes used to force the child to have specific implementations for both versions of listener */ class AListener : public IListener { // implement IListener virtual void OnEvent(const char * name, int id)=0; }; class BListener : public IListener { // implement IListener virtual void OnEvent(const char * name, int id)=0; }; /* this class wishes to support both listeners with different implementations however the implementations need to be in the class scope in order to access member vars without recourse to parent pointers and the like. */ class MultiEar : public AListener, BListener { public: MultiEar() : a(_T("EventSource A")) , b(_T("EventSource B")) { m_int = 0; } //* This code compiles and works ok on MSVC.NET but not on EVC4. // implement IListener void AListener::OnEvent(const char * name, int id) { printf(_T("%s %d AListener OnEvent(%s, %d)\n"), ClassName(), m_int, name, id); m_int++; } // implement IListener void BListener::OnEvent(const char * name, int id) { printf(_T("%s %d BListener OnEvent(%s, %d)\n"), ClassName(), m_int, name, id); m_int++; } void Test() { a.addListener((AListener*)this); b.addListener((BListener*)this); a.fireEvent(1); a.fireEvent(2); b.fireEvent(1); b.fireEvent(2); } private: EventSource a, b; const char * ClassName() { return _T("MultiEar") ; } int m_int; }; int _tmain(int argc, _TCHAR* argv[]) { printf(_T("testing interior listener classes.\n")); // create the MultiEar MultiEar multiEar; multiEar.Test(); return 0; } /** expected output testing interior listener classes. MultiEar 0 AListener OnEvent(EventSource A, 1) MultiEar 1 AListener OnEvent(EventSource A, 2) MultiEar 2 BListener OnEvent(EventSource B, 1) MultiEar 3 BListener OnEvent(EventSource B, 2) */ Any idea? Thanks! Tag: #pragma pack (push, 1) Tag: 251818
  - 11
    - Continuous KillTimer or SetTimer calls hi, am using the SetTimer function and would like to know what happens when i use two continuous SetTimer calls or KillTimer calls on the same handle?? eg. i define a timer: SetTimer with an ID, say ID1. define it again with the same id, ID1. According to documentation, this should just reset the timer. Does it actually do taht? But what would happen if i try to do the same with KillTimer?? Kill ID1 and then again call KillTimer with ID1. thanx!! Tag: #pragma pack (push, 1) Tag: 251811
  - 12
    - Visual Studio NET Enterprise Architect 2003 download? where is Visual Studio NET Enterprise Architect 2003 download link? Tag: #pragma pack (push, 1) Tag: 251809
  - 13
    - question about STL on VC6 the following code can not be compiled in VC6 ,but can be compiled in VC.net2003 Is there any way that make vc6 to support STL better? #include <iostream> #include <vector> using namespace std; class myc { public: myc():v(5){} template<class myiter> void tmpfunc(myiter first,myiter last,int i); void fun(); private: vector<int> v; }; template<class myiter> void myc::tmpfunc(myiter first,myiter last,int i) { for(;first!=last;++first) { cout<<*first; } cout<<endl; } void myc::fun() { tmpfunc(v.begin(),v.end(),0); /* in vc6 ,there is an error: G:\myproject\con0002\con002.cpp(30) : error C2893: Failed to specialize function template 'void __thiscall myc::tmpfunc(myiter,myiter,int)' With the following template arguments: 'int *' */ } int main() { myc m; m.fun(); return 0; } Tag: #pragma pack (push, 1) Tag: 251802
  - 14
    - Problems with New PSDK samples Use Hi guys! I really need your help . I 'm working with VC++7, PLATFORM SDK (WinSVR 2003 sp1, Apr 2005 ver), and DirectX 9.0(Update aug2005). I'm trying to build the PLGTERM (TAPI plugg term )sample application. I built all the Directshow samples needed : strmbase.lib (BaseClasses sample) , MSPBaseSample.lib (MSPBase sample ). Since Samples in the last PSDK version are not shipped with projects files , I used makefiles provided by Microsoft. I had no problems building MSPBase and BaseClasses samples. But I have no success building the last one : Pluggable Terminal (tapi 3). Since 2 days I trying to resolve these errors . Can you suggest me some solutions? I do not have experience with this kind of errors. Thank you. (Here are some parts generated by makefile in console): ..... ..... ..... link /DLL /DEBUG /DEBUGTYPE:cv /DEF:PlgTerm.def /INCREMENTAL:NO /NOLOGO -subsystem:windows,5.01 XP32_DEBUG\Pluggable.obj XP32_DEBUG\PlgTermFilter.ob j XP32_DEBUG\PlgTermPin.obj XP32_DEBUG\PlgTerm.obj XP32_DEBUG\PlgTerm.res uuid .lib winmm.lib bufferoverflowU.lib rtutils.lib "C:\Program Files\Microsoft Plat form SDK \Samples \Multimedia \DirectShow \BaseClasses \XP32_DEBUG\strmbasd.lib" /NOD EFAULTLIB:libcmtd.lib ..\MSP\lib\XP32_DEBUG\MSPBaseSample.lib -out:XP32_DEBUG\PlgTerm.dll Creation of library XP32_DEBUG\PlgTerm.lib and object XP32_DEBUG\PlgTerm.exp atlsd.lib(atlfuncs.obj) : error LNK2001: unresolved external symbol "void __cdecl operator delete(void *)" (??3@YAXPAX@Z) MSPBaseSample.lib(msplog.OBJ) : error LNK2001: unresolved external symbol "void __cdecl operator delete(void *)" (??3@YAXPAX@Z) MSPBaseSample.lib(mspterm.OBJ) : error LNK2019: unresolved external symbol "void __cdecl operator delete(void *)" (??3@YAXPAX@Z) referenced in function "public: void * __thiscall ATL::CComTypeInfoHolder::stringdispid::`vector deleting destructor'(unsigned int)" (??_Estringdispid@CComTypeInfoHolder@ATL@@QAEPAXI@Z) MSPBaseSample.lib(msputils.OBJ) : error LNK2001: unresolved external symbol "void __cdecl operator delete(void *)" (??3@YAXPAX@Z) atlsd.lib(AtlDebugAPI.obj) : error LNK2001: unresolved external symbol "void __cdecl operator delete(void *)" (??3@YAXPAX@Z) strmbasd.lib(amfilter.obj) : error LNK2019: unresolved external symbol "void __cdecl operator delete(void *)" (??3@YAXPAX@Z) rÃ©fÃ©rencÃ© dans la fonction "public: __thiscall CBaseMediaFilter::CBaseMediaFilter(char const *,struct IUnknown *,class CCritSec *,struct _GUID const &)" (??0CBaseMediaFilter@@QAE@PBDPAUIUnknown@@PAVCCritSec@@ABU_GUID@@@Z) strmbasd.lib(wxutil.obj) : error LNK2001: unresolved external symbol "void __cdecl operator delete(void *)" (??3@YAXPAX@Z) strmbasd.lib(wxdebug.obj) : error LNK2019: unresolved external symbol "void __cdecl operator delete(void *)" (??3@YAXPAX@Z) referenced in function "unsigned long __stdcall DbgRegisterObjectCreation(char const *,unsigned short const *)" (?DbgRegisterObjectCreation@@YGKPBDPBG@Z) ... ... Pluggable.obj : error LNK2019: unresolved external symbol "void __cdecl operator delete(void *)" (??3@YAXPAX@Z) referenced in function "public: void * __thiscall ATL::CComTypeInfoHolder::stringdispid::`vector deleting destructor'(unsigned int)" (??_Estringdispid@CComTypeInfoHolder@ATL@@QAEPAXI@Z) PlgTermFilter.obj : error LNK2001: unresolved external symbol "void __cdecl operator delete(void *)" (??3@YAXPAX@Z) PlgTermPin.obj : error LNK2001: unresolved external symbol "void __cdecl operator delete(void *)" (??3@YAXPAX@Z) PlgTerm.obj : error LNK2001: unresolved external symbol "void __cdecl operator delete(void *)" (??3@YAXPAX@Z) ... ... MSPBaseSample.lib(mspterm.OBJ) : error LNK2001: unresolved external symbol "void __cdecl operator delete[](void *)" (??_V@YAXPAX@Z) Pluggable.obj : error LNK2019: unresolved external symbol "void __cdecl operator delete[](void *)" (??_V@YAXPAX@Z) referenced in function "public: void * __ thiscall ATL::CComTypeInfoHolder::stringdispid::`vector deleting destructor'(unsigned int)" (??_Estringdispid@CComTypeInfoHolder@ATL@@QAEPAXI@Z) PlgTermFilter.obj : error LNK2001: unresolved external symbol "void __cdecl operator delete[](void *)" (??_V@YAXPAX@Z) PlgTermPin.obj : error LNK2001: unresolved external symbol "void __cdecl ..... .... ... Tag: #pragma pack (push, 1) Tag: 251801
  - 15
    - Ending all DLL instances I have a DLL which has a Hook function. My app loads the initial instance of the DLL and calls an initialize function to start the hook etc. This hook is a system wide hook and can attach to all sorts of window (not belonging to my app). If I end my app, first calling another function to end the hooks, the other DLL instances are still there. Is there a way to end all instances of the DLL in one go? Tag: #pragma pack (push, 1) Tag: 251797
  - 16
    - How can I use CreateProcess() to get another application`s result? Hello everyone: I want to use CreateProcess() call another application, and save the result in a text file.I can surely exeute the application,but there is nothing data in the text file.why?? Could you please give me the code example? Thank you! //window message process function LRESULT CALLBACK WndProc(HWND hwnd,UINT msg,WPARAM wParam,LPARAM lParam) { static STARTUPINFO si; static PROCESS_INFORMATION pi; static HANDLE hFile; static SECURITY_ATTRIBUTES sa; sa.bInheritHandle = TRUE; hFile = CreateFile("C:\\Tracert.txt",GENERIC_WRITE,FILE_SHARE_WRITE, &sa,CREATE_ALWAYS,FILE_ATTRIBUTE_NORMAL,NULL); si.dwFlags = STARTF_USESTDHANDLES; si.hStdOutput = hFile; switch(msg) { case WM_CREATE: CreateProcess("C:\\WINNT\\System32\\tracert.exe"," www.163.com", NULL, NULL, FALSE,0, NULL, NULL, &si, &pi); return 0; case WM_PAINT: return 0; case WM_DESTROY: CloseHandle(hFile); PostQuitMessage(0); return 0; } return DefWindowProc(hwnd,msg,wParam,lParam); } Tag: #pragma pack (push, 1) Tag: 251795
  - 17
    - Exporting C++ Classes from a Static Library and from a DLL I am not sure if this OT, but I will go ahead and post. If it has to be posted elsewhere let me know. -vijai. ------ I have a class declared as follows: #pragma once // a simple reference counter implementation #ifndef __REF_COUNTER_H__ #define __REF_COUNTER_H__ #include <iosfwd> #include "smlibdefs.h" namespace SMLib { class SMLIBAPI_CLASS ReferenceCounter { unsigned long m_numrefs; public: ReferenceCounter(); ReferenceCounter(const ReferenceCounter&); ReferenceCounter& operator = (const ReferenceCounter&); virtual ~ReferenceCounter(); virtual void AcquireReference(); virtual void ReleaseReference(); virtual unsigned long CountReferences() const; }; }; SMLIBAPI_FUNCTION std::ostream& operator << (std::ostream&, const SMLib::ReferenceCounter&); SMLIBAPI_FUNCTION std::wostream& operator << (std::wostream&, const SMLib::ReferenceCounter&); #endif SMLIBAPI_FUNCTION is defined as __declspec(dllimport) or __declspec(dllexport) depending on whether the class is being imported or exported. (On Windows. On *nix I don't have to do anything to export C++ classes I believe. All symbols are exported by default?) I build a shared library and a static library. I test the class and it's methods with the following separate test program. #include <refcounter.h> #include <windows.h> #include <iostream> #include <assert.h> void Test_ReferenceCounter_Construction() { SMLib::ReferenceCounter ctr; std::wcout<<L"Counter: "<<ctr<<std::endl; } void Test_ReferenceCounter_Initialization() { SMLib::ReferenceCounter ctr; std::wcout<<L"Counter: "<<ctr<<std::endl; assert(ctr.CountReferences() == 0); } void Test_ReferenceCounter_CopyConstruction() { SMLib::ReferenceCounter ctr; std::wcout<<L"Counter 1: "<<ctr<<std::endl; SMLib::ReferenceCounter ctr2 = ctr; std::wcout<<L"Counter 2: "<<ctr2<<std::endl; assert(ctr2.CountReferences() == 0); } void Test_ReferenceCounter_Assignment() { SMLib::ReferenceCounter ctr; std::wcout<<L"Counter 1: "<<ctr<<std::endl; ctr.AcquireReference(); ctr.AcquireReference(); SMLib::ReferenceCounter ctr2; ctr2.AcquireReference(); std::wcout<<L"Counter 2: "<<ctr2<<std::endl; ctr2 = ctr; std::wcout<<L"Counter 2 (reassigned): "<<ctr2<<std::endl; assert(ctr2.CountReferences() == ctr.CountReferences()); } void Test_ReferenceCounter_ReferenceIncrement() { SMLib::ReferenceCounter ctr; std::wcout<<L"Counter: "<<ctr<<std::endl; ctr.AcquireReference(); assert(ctr.CountReferences() == 1); } void Test_ReferenceCounter_ReferenceDecrement() { SMLib::ReferenceCounter ctr; std::wcout<<L"Counter: "<<ctr<<std::endl; ctr.AcquireReference(); ctr.AcquireReference(); ctr.ReleaseReference(); assert(ctr.CountReferences() == 1); } int main() { LoadLibrary("smlib-1.0.0.0"); Test_ReferenceCounter_Construction(); Test_ReferenceCounter_Initialization(); Test_ReferenceCounter_Assignment(); Test_ReferenceCounter_ReferenceIncrement(); Test_ReferenceCounter_ReferenceDecrement(); return 0; } However, in the shared library: I get an unresolved external error only for the overloaded left shift operator. On the other hand for the static library I get unresolved external symbols error for all the methods as well as the function. I use the same makefile to compile both: executableName = smlib programName = smlib version = 1.0.0.0 baseDir = . incDir = $(baseDir)/ srcDir = $(baseDir)/ !if defined(DEBUG) || defined(_DEBUG) buildSuffix = d buildType = DEBUG !else buildSuffix = buildType = RELEASE !endif ExtLibs = kernel32.lib \ msvcrt$(buildSuffix).lib \ libc$(buildSuffix).lib \ libcmt$(buildSuffix).lib Includes = basedefs.h \ smlibdefs.h \ refcounter.h OutPath = $(MAKEDIR)\$(buildType) CCOpts = /c /Gd /MDd /EHa /D__SMLIB__BUILD /D$(buildType) /I$(incDir) CC = cl.exe LibOpts = /OUT:$(OutPath)\libsmlib-$(version).lib /NOLOGO /SUBSYSTEM:NATIVE LIB = lib.exe LinkOpts = /$(buildType) /DLL /NOLOGO /OUT:$(OutPath)\smlib-$(version).dll /IMPLIB:$(OutPath)\smlib-$(version).lib /PDB:$(OutPath)\smlib-$(version).pdb $(ExtLibs) LINK = link.exe refcounter: refcounter.cpp $(Includes) $(CC) $(CCOpts) /Fo$(OutPath)/refcounter.obj refcounter.cpp allObjs = $(OutPath)\refcounter.obj lib: refcounter $(LIB) $(LibOpts) $(allObjs) dll: refcounter $(LINK) $(LinkOpts) $(allObjs) all: refcounter dll lib clean: del /Q $(OutPath)\*.obj del /Q $(OutPath)\smlib-$(version).pdb del /Q $(OutPath)\smlib-$(version).lib del /Q $(OutPath)\smlib-$(version).exp del /Q $(OutPath)\smlib-$(version).dll del /Q $(OutPath)\smlib-$(version).ilk Anyone have any ideas on what I am doing wrong? thanks, -vijai. Tag: #pragma pack (push, 1) Tag: 251794
  - 18
    - XP icons Ok. I have C++ .Net (v7.1 2003). I can't seem to add XP icons (32 bit) to the resource file. How is this done? Tag: #pragma pack (push, 1) Tag: 251788
  - 19
    - Make assign illegal for class Hi, Is there any way to explicitly make = or copy construction illegal for a given class? I have several that are most complex and will at no point ever need to be copied. For integrity purposes, is there any way to disable the copy all together and generate a warning? (I was thinking of having a home made copy constructor but I have no idea about generating a compile error inside it). -- - Mark Randall http://zetech.swehli.com Tag: #pragma pack (push, 1) Tag: 251782
  - 20
    - std::vector<CString> to LPCTSTR * Hi, I need to call a function, like dummy_fun( LPCTSTR * ppStr ), the ppStr parameter's data is stored in a database, so this parameter cannot be initialized using syntax like LPCTSTR ppStr[] = {_T("AAA"), ..., NULL }. Following code is used to retrieve data from database and stored them to a vector and construct the ppStr parameter. //... std::vector<CString> vs; while ( SUCCEEDED(hr) && hr != DB_S_ENDOFROWSET) { DBSTATUS dt; rs.GetStatus(_T("ItemText"), &dt); if (dt == DBSTATUS_S_OK) { CString str((LPCTSTR)rs.GetValue(_T("ItemText"))); if (!str.IsEmpty()) { vs.push_back(str); } } hr = rs.MoveNext(); } LPCTSTR *ppStr = new LPCTSTR[vs.size() + 1]; size_t i = 0, vsMax = vs.size(); while ( i < vsMax) { ppStr[i] = vs[i]; ++i;} ppStr[vsMax] = NULL; // terminating NULL dummy_function( ppStr ); // This function has a LPCTSTR * parameter delete[] ppStr; //... Is it the way to do it ? By the way, it is not a MFC project. I tried to use (LPCTSTR*)&vs[0] also, but don't know how to put a NULL at the end. -- peter lin Tag: #pragma pack (push, 1) Tag: 251780
  - 21
    - std::vector<CString> to LPCTSTR * Hi, I need to call a function, like dummy_fun( LPCTSTR * ppStr ), the ppStr parameter's data is stored in a database, so this parameter cannot be initialized using syntax like LPCTSTR ppStr[] = {_T("AAA"), ..., NULL }. Following code is used to retrieve data from database and stored them to a vector and construct the ppStr parameter. //... std::vector<CString> vs; while ( SUCCEEDED(hr) && hr != DB_S_ENDOFROWSET) { DBSTATUS dt; rs.GetStatus(_T("ItemText"), &dt); if (dt == DBSTATUS_S_OK) { CString str((LPCTSTR)rs.GetValue(_T("ItemText"))); if (!str.IsEmpty()) { vs.push_back(str); } } hr = rs.MoveNext(); } LPCTSTR *ppStr = new LPCTSTR[vs.size() + 1]; size_t i = 0, vsMax = vs.size(); while ( i < vsMax) { ppStr[i] = vs[i]; ++i;} ppStr[vsMax] = NULL; // terminating NULL dummy_function( ppStr ); // This function has a LPCTSTR * parameter delete[] ppStr; //... Is it the way to do it ? By the way, it is not a MFC project. I tried to use (LPCTSTR*)&vs[0] also, but don't know how to put a NULL at the end. -- peter lin Tag: #pragma pack (push, 1) Tag: 251779
  - 22
    - ListView header re-create problem - TIA Hi: Is it possible to re-create (delete/add) column header of a ListView continuously? Basically I want to switch between different number of column on the same ListView. I can recreate the header visually (it seems to work) but when I try to insert the data the new column didn't exist. Any solution, workaround or suggestion? Thanks Tag: #pragma pack (push, 1) Tag: 251773
  - 23
    - High Performance TCP Server I need to develop a high performance TCP server. It constantly serves a huge amount of transactions. My question is which socket mode shall I use, blocking or non-blocking ? Thanks. Tag: #pragma pack (push, 1) Tag: 251772
  - 24
    - Is there anyway to forward reference a namespace like STL? Is there anyway to forward reference a namespace like STL? I can forward reference a class in my header file like this. class MyClass; class AnotherClass { MyClass *c; } This way I do not need to include the header to MyClass in the header for AnotherClass. But how would I do this for something that uses a namespace like STL? std::vector< Route* > *m_coll; Tag: #pragma pack (push, 1) Tag: 251764
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    - Pointers To Functions in Classes I have some code that gives me the following error: error C2440: '=' : cannot convert from 'char (__thiscall CFunctionClass::*)(long,long)' to 'char (__cdecl *)(long,long) ' There is no context in which this conversion is possible It is obvious that with the difference of calling conventions this won't work, how do I fix it... The functions used assigned to the pointer and the function pointer itself are members of the class CFunctionClass. Thanks. Tag: #pragma pack (push, 1) Tag: 251753
- Next
  - 1
    - Copy constructor ! Hi, The default copy constructor simply copies each member variable from the object passed as a parameter to the member variables of the new object. This is called member -wise (or shallow copy). However if I provide my own copy constructor but with no code in it, will a shallow copy still be made? -- Best regards Robert Tag: #pragma pack (push, 1) Tag: 251748
  - 2
    - DLL and its icon Hello, I have "some.DLL" and "some.LIB" developed as "Win32 Dynamic-Link Library". How can I make them appear in "Windows Explorer" with custom icon ? I tried to insert "some.ICO" as resource but it doesn't work. Thank you, dave Tag: #pragma pack (push, 1) Tag: 251747
  - 3
    - returning a formated string I'm making a function that returns a formated String. my best attempt is shown but it does not work. I think it does not expand out the "args" when it is passed in. is there a way to make CString::Format expand out the Arguments List? p.s. if I should be using sprintf or something else like that, let me know also. my DevEnv is MS VC++ 6 CString GetFormatedString(LPCTSTR fmt,...) { va_list args; CString msg; va_start(args, fmt); msg.Format(fmt, args); va_end(args); return msg; } cheers and thanks Tag: #pragma pack (push, 1) Tag: 251742
  - 4
    - LBUTTONDOWN LBUTTONUP selects text I don't want selected in a textbox I want to programmatically set the position of a cursor in a textbox that has focus based on a X and Y value. However, when I send a WM_RBUTTONDOWN and a WM_RBUTTONUP message to the textbox it selects the text from where the cursor is to where I want the cursor to be. All I want is to move the position of the cursor based on a X and Y values, not select the text. The code to recreate the issue in C#. const int WM_LBUTTONDOWN = 0x0201; const int WM_LBUTTONUP = 0x0202; textBox1.Focus(); int X = 23; int Y = 6; SendMessage(textBox1.Handle, WM_LBUTTONDOWN, Y,X); SendMessage(textBox1.Handle, WM_LBUTTONUP, Y,X); Is there another message I can send? Thanks. Tag: #pragma pack (push, 1) Tag: 251740
  - 5
    - WH_CBT hook problems I've written a small c++ to inject into a thread using c# as my front end. It is a very simple problem, to catch whenever a window is opened within a certain program, but the solution(hook) isn't catching it. The hook installs fine, returning a true boolean flag, but it doesnt seem to be raising the CallBack. Any help would be greatly appreciated, here is some example code, maybe it could help. C++ DLL - WH_CBT HOOK CLASS #include "stdafx.h" #include <windows.h> #include "CbtHook.h" HINSTANCE _appInstance; HookProc CbtHookCallback = NULL; HHOOK hookCbt = NULL; static LRESULT CALLBACK InternalCbtHookCallback(int code, WPARAM wParam, LPARAM lParam); // DLL main commented out for space, but catches the _appInstance variable; // This sets the HookCallback to be used bool SetCbtHookCallback(HookProc userProc, UINT hookID) { if ( userProc == NULL ) return false; if ( hookID == WH_CBT ) { if (CbtHookCallback != NULL) return false; CbtHookCallback = userProc; return true; } return false; } bool InitializeHook(UINT hookID, int threadID) { if ( _appInstance == NULL ) return false; if ( hookID = WH_CBT ) { if ( CbtHookCallback == NULL ) return false; hookCbt = SetWindowsHookEx(hookID,(HOOKPROC)InternalCbtHookCallback,_appInstance,0); if ( hookCbt != NULL ) return true; } return false; } // UninitializeHook method commented out for space // HookCallBack procedure to be caught by my front end c# code static LRESULT CALLBACK InternalCbtHookCallback(int code, WPARAM wparam, LPARAM lparam) { if ( code < 0 ) return CallNextHookEx(hookCbt, code, wparam, lparam); //if ( CbtHookCallback != NULL ) CbtHookCallback(code, wparam, lparam); return CallNextHookEx(hookCbt, code, wparam, lparam); } Tag: #pragma pack (push, 1) Tag: 251733
  - 6
    - Do I need synchronisation for 1 writer, 1 reader thread? Hi all, I have a console C++ app (VC++ 6.0, WIN XP x64) with 1 worker thread created with _beginthreadex in addition to the main thread of execution (so 2 threads). The worker thread should carry on until the main thread says stop. At the moment I have implemented this by having the main thread set a bool visible to both threads to true (it is initialised to false at startup). The worker thread simply checks the value of this bool on each iteration of it's loop and keeps going until it is true. Then, the worker thread cleans up after itself and returns. Here is some pseudoish code: bool stopThread = false; bool threadStopped = false; int main (void) { createThread(); // do stuff for a while stopThread = true; while (threadStopped == false) { // wait }; // do other stuff and exit } void thread(void) { while (stopThread == false) { // do stuff } // cleanup threadStopped = true; return; } As far as I can see this should be fine and perfectly safe (i.e. I do not need any synchronisation in terms of critical sections, mutexes, semaphores, events etc..) because each variable is only written by one thread. Am I right? Is there a better way with better style etc that isn't overkill? Many thanks for your time, Dave Tag: #pragma pack (push, 1) Tag: 251731
  - 7
    - vista - how to get? What's the least expensive route to obtaining a vista beta? Tag: #pragma pack (push, 1) Tag: 251729
  - 8
    - Multi-thread testing platform What is the best 1-off purchase platform to test multi-threaded code? Hyperthreaded, Dual Core Dual Processor E.g. most customers using our product on a "multi-processor" platform will be running a Hyperthreaded processor, a few may be using dual core processors - most will _not_ have a dual processor setup (except perhaps if running via a terminal services server). The way I see it is to get the worst-case-scenario (i.e. a dual processor), but I need to check first that there are unlikely to be scenarios where an error would only show itself on Hyperthreaded processor for some reason. (I guess I'll be varying the background load during testing.) At the moment, I'm just firing off a second thread to do some DX sound generation (on-the-fly waveform generation) - beeps and such. Later, I'll be firing off threads to read and write to the serial port and perhaps other things too. No high-load server stuff, just the basic one or two worker threads that may or may not need sychcronisation with the main program. Thanks. Tag: #pragma pack (push, 1) Tag: 251728
  - 9
    - Which Indentity? How do I determine which identity is being used when instancing a Windows system COM component from within a VC++7 COM component? Regards...Andrew Tag: #pragma pack (push, 1) Tag: 251725
  - 10
    - how to solve "Non-modal forms cannot be displayed in this host application" Hi, I am trying to make a modalless form in VB6 that is compiled as an ActiveX DLL. When i use VC6 to instance the activex DLL, my problem appears that "406 Non-modal forms cannot be displayed in this host application from an ActiveX DLL, ActiveX control or Property Page." I have my form in modalless style in VB6 and they should be instanced in VC. Does anyone know how to get this to work ? Many Thanks, Xiao Tag: #pragma pack (push, 1) Tag: 251724
  - 11
    - textBox1_TextChanged creates an error I am using a Visual Studio 2002 and was creating a small C# application that does very little, but I get the following error trying to build it. C:\DotNetProjects\DataReaderDemo\Form1.cs(69): 'DataReaderDemo.Form1' does not contain a definition for 'textBox1_TextChanged' The code that VS generates is the problem: private void InitializeComponent() ... this.textBox1.TextChanged += new System.EventHandler(this.textBox1_TextChanged); If I take out the line with textbox1.TextChanged - it works fine. Why is this an error if VS added it? Thanks, Tom Tag: #pragma pack (push, 1) Tag: 251722
  - 12
    - CListBox item's color Env: VC++6 Is it possible to change CListBox's color by every item while calling CListBox::AddString()? William Tag: #pragma pack (push, 1) Tag: 251721
  - 13
    - Dependency generation (CL /E) Currently with VC6, we invoke the CL compiler with /E, in order to parse the list of included files, and thus reconstitute our dependency lists. But with VC7, the compiler introduces absolute paths into the spew (same if you use /showIncludes). We filter these out, considering the probably originate from the system path (and we aren't interested in tracking these dependencies). * Why does CL do this now? Why has this behavior changed? * Is it a bug? * Is there a work-around (regardless of the answers to the other questions)? Thank you, Dan Tag: #pragma pack (push, 1) Tag: 251720
  - 14
    - findFirstFile, findNextFike I need codes to access all files in all subdirectory in one directory in VC++/VStudio but in console (DOS) mode. Thank you for your help in advance. M.K. Tag: #pragma pack (push, 1) Tag: 251718
  - 15
    - Setting Title bar size programatically ? Is it possible to set the height of a title bar on a window programatically ? Does anyone know how ? Thanks, Ray Tag: #pragma pack (push, 1) Tag: 251709
  - 16
    - Fatal error LNK1104: cannot open file "nafxcwd.lib" I am trying to build an open source VC++ 6 project using VC++ 6 Standard but I am getting the following error message: Linking... LINK : fatal error LNK1104: cannot open file "nafxcwd.lib" Error executing link.exe. LeechBlocker.dll - 1 error(s), 1 warning(s) After searching my drive for nafxcwd.lib, the file was not found and it appears that this file is not included in the VC++ 6 Std. installation. Disabling debug gives the same message above indicating a different file named "nafxcw.lib". For my project settings, I am using 'Use MFC in a Shared DLL' (all configurations). Any comments or suggestions are appreciated. Thank you. Tag: #pragma pack (push, 1) Tag: 251707
  - 17
    - Error calling the function HrESERestoreComplete Hello All, I am writing an application to backup and restore M.S. Exchange server programatically. I am using the Exchange Backup and Restore API and am developing the application in VC++ 6.0 on a Windows Server 2003 Enterprise Edition. I am able to do the backup successfully but I am getting error in the function "HrESERestoreComplete" during the resore. I am trying to call the function HrESERestoreComplete as follows: //<step 8> //HrESERestoreComplete CString strTempLocationPath; CString strTempLocationPath1; strTempLocationPath = _T("C:\\viraj\\exchangedata_bkp\\temp"); strTempLocationPath1 = _T("C:\\viraj\\exchangedata_bkp\\temp"); WCHAR * wszMNURestoreInstanceSystemPath = strTempLocationPath.GetBuffer(strTempLocationPath.GetLength()); WCHAR * wszMNURestoreInstanceLogPath = strTempLocationPath1.GetBuffer(strTempLocationPath1.GetLength()); unsigned long fMNUFlags = ESE_RESTORE_COMPLETE_ATTACH_DBS; typedef HRESULT (ESEBACK_API *HrESERestoreComplete) (IN HCCX hccxRestoreContext, IN WCHAR * wszRestoreInstanceSystemPath, IN WCHAR * wszRestoreInstanceLogPath, IN WCHAR * wszTargetInstanceName, IN unsigned long fFlags); HrESERestoreComplete fnMNURestoreComplete = NULL; fnMNURestoreComplete = (HrESERestoreComplete) GetProcAddress (g_hESEDll,"HrESERestoreComplete"); if(fnMNURestoreComplete) hr = (fnMNURestoreComplete) (phccxMNURestoreContext,wszMNURestoreInstanceSystemPath, wszMNURestoreInstanceLogPath,wszSrcInstanceName,fMNUFlags); if(hr != S_OK) { LPVOID lpMsgBuf; DWORD dw = GetLastError(); FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM, NULL, dw, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), (LPTSTR) &lpMsgBuf,0,NULL); CString strMessage = _T(""); strMessage.Format(_T("failed with error %d : %s"),dw,lpMsgBuf); AfxMessageBox(strMessage); LocalFree(lpMsgBuf); return MNU_EXCHANGE_RESTORE_FAILURE; } //</step 8> All the inputs seem to be correct. Output: hr = -939585532 dw = 4294965485 Expected Output: hr = S_OK Can anyone please point the mistake in my code or give me sample code for the "HrESERestoreComplete" Function? Thanks, Viraj a.viraj@mobiliti.com http://www.mobiliti.com 732-248-8300 ext 234 Tag: #pragma pack (push, 1) Tag: 251705
  - 18
    - Modal dialog behavior When an application displays a modal dialog box, the application's message pump is blocked until the dialog box is dismissed. How is it then that if you move that dialog box around, the parent application is redrawn? Are the WM_PAINT messages in the parent application's message queue still getting processed, or is something else going on here? Thanks, DC Tag: #pragma pack (push, 1) Tag: 251702
  - 19
    - Failed to hooking COM function with MS Detours 1. Compiling with no errors in VC 6.0, but CAN NOT run into CompressDetour. Am I doing something wrong? 2. Compiling with error at line "COMPRESSMETHOD zip = pICompressor->Compress" in VC 7.0, error C2475: '_Compressor::Compress' : forming a pointer-to-member requires explicit use of the address-of operator ('&') and a qualified name, any advice? TIA Source code below: // SOHook.cpp : Defines the entry point for the DLL application. // #include "stdafx.h" #pragma warning(disable:4100) // Trampolines don't use formal parameters. DETOUR_TRAMPOLINE(long __stdcall Real_CoCreateInstanceEx(REFCLSID Clsid, IUnknown *punkOuter, DWORD wClsCtx, COSERVERINFO *pServerInfo, DWORD dwCount, MULTI_QI *pResults), CoCreateInstanceEx); typedef HRESULT (__stdcall *COMPRESSPROC) ( _Compressor *This, BSTR Buffer, BSTR *RetValue ); typedef HRESULT (__stdcall _Compressor:: *COMPRESSMETHOD) ( BSTR Buffer, BSTR *RetValue ); COMPRESSPROC pfCompressTrampoline = NULL; HRESULT __stdcall CompressDetour(_Compressor *This, BSTR Buffer, BSTR *RetValue) { MessageBox(NULL, "Detoured", "CompressDetour", MB_OK); return pfCompressTrampoline(This, Buffer, RetValue); } long __stdcall Detoured_CoCreateInstanceEx(REFCLSID Clsid, IUnknown *punkOuter, DWORD wClsCtx, COSERVERINFO *pServerInfo, DWORD dwCount, MULTI_QI *pResults) { HRESULT hr; hr = Real_CoCreateInstanceEx(Clsid, punkOuter, wClsCtx, pServerInfo, dwCount, pResults); if ( FAILED(hr) ) { return hr; } if ( IsEqualCLSID(CLSID_Compressor, Clsid) ) { for (DWORD i = 0; i < dwCount; i++) { if ( IsEqualIID(IID__Compressor, *pResults[i].pIID) && SUCCEEDED(pResults[i].hr) ) { _Compressor *pICompressor = NULL; ((IUnknown *)(pResults[i].pItf))->QueryInterface(IID__Compressor,(void **)&pICompressor); COMPRESSMETHOD zip = pICompressor->Compress; pfCompressTrampoline = (COMPRESSPROC)DetourFunction(*(PBYTE *)&zip, (PBYTE)CompressDetour); pICompressor->Release(); } } } return hr; } BOOL APIENTRY DllMain( HANDLE hModule, DWORD ul_reason_for_call, LPVOID lpReserved ) { if (ul_reason_for_call == DLL_PROCESS_ATTACH ) { DetourFunctionWithTrampoline( (PBYTE)Real_CoCreateInstanceEx, (PBYTE)Detoured_CoCreateInstanceEx ); } else if (ul_reason_for_call == DLL_PROCESS_DETACH ) { DetourRemove( (PBYTE)Real_CoCreateInstanceEx, (PBYTE)Detoured_CoCreateInstanceEx ); } return TRUE; } Tag: #pragma pack (push, 1) Tag: 251694
  - 20
    - initializing private static array Hi gang! This is more of a preference issue than a syntax or C++ standards question. I have a class that has a private static array as a data member. I know that in the source file for the class, one would normally initialize all the static data members prior to any operation definitions. However, with arrays, the compiler thinks that you are redefining the length of the static array (when specifying a specific index). I can solve this by "modifying" (as opposed to initializing) the array inside the class constructor. I know this isn't usually considered "good practice" since instantiation of each object of the class will execute useless code (the 1st object will actually modify the data member, all other instantiations will simply reset the values to what's already stored). What's the best way to initialize static arrays? Oh, and I understand that the array will already be initialized to all zero's, but I'd like to initialize it to something else (it's actually a private static const array). Thanks as always! Tag: #pragma pack (push, 1) Tag: 251692
  - 21
    - Trade-offs when floating poing consistency? What are the trade-offs when I disable floating point consisetncy? I guess my program is still C++ compliant, isn't it? -- Angel Tsankov fn42551@fmi.uni-sofia.bg Tag: #pragma pack (push, 1) Tag: 251688
  - 22
    - Is it necessary to have default constructor of a class ?? Hi, I want to ask a question whether it is a must to have default constructors (without any parameter) of a class or it will be ok without it also... I have tried, without default constructor, it is working fine.. but i heard somewhere that it should be there.. Please tell me what is correct ?? --jigar Tag: #pragma pack (push, 1) Tag: 251687
  - 23
    - enum problem A class like this: class Sample { public: enmu{ iFirst, iSecond } } I wanna know how does the machine allocate the memory for the variable in enum type. Does it like a static member variable in class ? Thanks a lot. Tag: #pragma pack (push, 1) Tag: 251679
  - 24
    - Error during Exchange Backup Hello All, I am writing an application to backup and restore M.S. Exchange server programatically. I am using the Exchange Backup and Restore API and am developing the application in VC++ 6.0 on a Windows Server 2003 Enterprise Editioon. I am able to do the backup successfully but I am getting error in the function "HrESERestoreAddDatabase" during the resore. I am trying to call the function HrESERestoreComplete as follows: //<step 8> //HrESERestoreComplete CString strTempLocationPath; CString strTempLocationPath1; strTempLocationPath = _T("C:\\viraj\\exchangedata_bkp\\temp"); strTempLocationPath1 = _T("C:\\viraj\\exchangedata_bkp\\temp"); WCHAR * wszMNURestoreInstanceSystemPath = strTempLocationPath.GetBuffer(strTempLocationPath.GetLength()); WCHAR * wszMNURestoreInstanceLogPath = strTempLocationPath1.GetBuffer(strTempLocationPath1.GetLength()); unsigned long fMNUFlags = ESE_RESTORE_COMPLETE_ATTACH_DBS; typedef HRESULT (ESEBACK_API *HrESERestoreComplete) (IN HCCX hccxRestoreContext, IN WCHAR * wszRestoreInstanceSystemPath, IN WCHAR * wszRestoreInstanceLogPath, IN WCHAR * wszTargetInstanceName, IN unsigned long fFlags); HrESERestoreComplete fnMNURestoreComplete = NULL; fnMNURestoreComplete = (HrESERestoreComplete) GetProcAddress (g_hESEDll,"HrESERestoreComplete"); if(fnMNURestoreComplete) hr = (fnMNURestoreComplete) (phccxMNURestoreContext,wszMNURestoreInstanceSystemPath, wszMNURestoreInstanceLogPath,wszSrcInstanceName,fMNUFlags); if(hr != S_OK) { LPVOID lpMsgBuf; DWORD dw = GetLastError(); FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM, NULL, dw, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), (LPTSTR) &lpMsgBuf,0,NULL); CString strMessage = _T(""); strMessage.Format(_T("failed with error %d : %s"),dw,lpMsgBuf); AfxMessageBox(strMessage); LocalFree(lpMsgBuf); return MNU_EXCHANGE_RESTORE_FAILURE; } //</step 8> All the inputs seem to be correct. Output: hr = -939585532 dw = 4294965485 Expected Output: hr = S_OK Can anyone please point the mistake in my code or give me sample code for the "HrESERestoreComplete" Function? Thanks, Viraj a.viraj@mobiliti.com http://www.mobiliti.com 732-248-8300 ext 234 Tag: #pragma pack (push, 1) Tag: 251673
  - 25
    - Component Categories The discussion of Component Categories in the version of MSDN that is included with Visual Studio .NET 2003 includes the following statement: > This is not a definitive list of categories; further categories are likely > to be defined in the > future as new requirements are identified. An up-to-date list of component > categories is > available from Microsoft on their world wide web site, this list reflects > those component > categories that have been identified by Microsoft and any others that > about which vendors > have informed Microsoft. Is this true? I can not find a definitive list of component categories on miscrosoft.com. Is there one? Where? Thanks. David Liebtag Tag: #pragma pack (push, 1) Tag: 251665

What does it mean?
Thanks
Jack

Re: #pragma pack (push, 1) by Igor

Igor
Mon Aug 22 08:50:41 CDT 2005

Jack <jl@knight.com> wrote:
> What does it mean?

I assume you have read the fine manual, and some questions still remain.

http://msdn.microsoft.com/library/en-us/vclang/html/_predir_pack.asp

What specifically do you have a problem with?
--
With best wishes,
Igor Tandetnik

With sufficient thrust, pigs fly just fine. However, this is not
necessarily a good idea. It is hard to be sure where they are going to
land, and it could be dangerous sitting under them as they fly
overhead. -- RFC 1925

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Re: #pragma pack (push, 1) by Tom

Tom
Mon Aug 22 09:41:15 CDT 2005

Igor Tandetnik wrote:
> Jack <jl@knight.com> wrote:
>
>>What does it mean?
>
>
> I assume you have read the fine manual, and some questions still remain.
>
> http://msdn.microsoft.com/library/en-us/vclang/html/_predir_pack.asp
>
> What specifically do you have a problem with?

That's a very polite way of saying RTFM! I might start using it myself. :)

Tom

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Re: #pragma pack (push, 1) by Martin

Martin
Mon Aug 22 10:06:42 CDT 2005

Hallo Tom!

> That's a very polite way of saying RTFM! I might start using it myself. :)

Whats wrong with RTFM (Read The Fine MSDN)? SCNR

--
Martin Richter [MVP] WWJD
"In C we had to code our own bugs. In C++ we can inherit them."
FAQ : http://www.mpdvc.de
Samples: http://www.codeguru.com http://www.codeproject.com

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