how to solve "Non-modal forms cannot be displayed in this host application"

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  - 1
    - 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: how to solve "Non-modal forms cannot be displayed in this host application" Tag: 251722
  - 2
    - CListBox item's color Env: VC++6 Is it possible to change CListBox's color by every item while calling CListBox::AddString()? William Tag: how to solve "Non-modal forms cannot be displayed in this host application" Tag: 251721
  - 3
    - 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: how to solve "Non-modal forms cannot be displayed in this host application" Tag: 251720
  - 4
    - 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: how to solve "Non-modal forms cannot be displayed in this host application" Tag: 251718
  - 5
    - 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: how to solve "Non-modal forms cannot be displayed in this host application" Tag: 251709
  - 6
    - 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: how to solve "Non-modal forms cannot be displayed in this host application" Tag: 251707
  - 7
    - 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: how to solve "Non-modal forms cannot be displayed in this host application" Tag: 251705
  - 8
    - 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: how to solve "Non-modal forms cannot be displayed in this host application" Tag: 251702
  - 9
    - 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: how to solve "Non-modal forms cannot be displayed in this host application" Tag: 251694
  - 10
    - 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: how to solve "Non-modal forms cannot be displayed in this host application" Tag: 251692
  - 11
    - 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: how to solve "Non-modal forms cannot be displayed in this host application" Tag: 251688
  - 12
    - 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: how to solve "Non-modal forms cannot be displayed in this host application" Tag: 251687
  - 13
    - 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: how to solve "Non-modal forms cannot be displayed in this host application" Tag: 251679
  - 14
    - 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: how to solve "Non-modal forms cannot be displayed in this host application" Tag: 251673
  - 15
    - 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: how to solve "Non-modal forms cannot be displayed in this host application" Tag: 251665
  - 16
    - Ensuring one instance of an app Hello all, What is the easiest way to ensure that only one instance of my app may be running at a time? If the user attempts to start a second instance, the first instance should be restored. Thanks, Dave Tag: how to solve "Non-modal forms cannot be displayed in this host application" Tag: 251664
  - 17
    - start unix process from c++ win32 app I am trying to write a win32 app that will start mulitple instances of an exe on UNIX. The exe is located on the backend UNIX node and takes several arguments. I'm wanting to build a frontend win32 app where the user can input the needed arguments and then kick off the exe on the backend UNIX machine without having to log into the UNIX box. My question is how do I start the process on UNIX. Is there simply a function that I can pass the location of the exe and all the arguments? Tag: how to solve "Non-modal forms cannot be displayed in this host application" Tag: 251657
  - 18
    - swprintf() bug in vc7? I'm using VS .Net 2003 with a c++ project compiled with unicode support. I have a project that is calling swprintf(). At runtime I'm seeing an exception from one of the low level calls. Looking at the callstack I see that my code is calling this code in vc7/crt/src/swprintn.cpp: int __cdecl swprintf ( unsigned short *string, size_t count, const unsigned short *format, ... ) { return swprintf(reinterpret_cast<wchar_t *>(string), count, reinterpret_cast<const wchar_t *>(format)); } And this code is calling the actual swprintf() function. This intermediate swprintf function is completely ignoring the arguments passed in and the call to the actual swprintf() gets the wrong parameters because of it. I've tried casting things to get the compiler to call the real swprintf() function but this hasn't seemed to work around this odd function call. How is this call ever expected to work correctly? Is this a known bug that has been fixed? I've seen no mention of it in the msdn forums or in the knowledge base or in searches on google. Tag: how to solve "Non-modal forms cannot be displayed in this host application" Tag: 251653
  - 19
    - vc6->vc7 template class no longer compiles error C2511 Hi, Moving from VC6 to VC7, a templated class I wrote 5 years ago has stopped compiling with the C2511 error (No version of the funtion is declared with the specified parameters. class defn starts with ** begin .h *** class CMBCComGateway; struct R; template <class R> class CMBCComTransaction { // Construction public: CMBCComTransaction(CMBCComGateway *pGateway, CMBCComPacket *pPacket) { m_pGateway = pGateway; m_pPacketIn = pPacket; }; ~CMBCComTransaction() {}; // Implemenation public: // Request and Report Transaction Methods BOOL Execute(R *pASDU); . . . ** end .h *** The function in question is the execute funtion which is then defined in a .cpp file somthing as follows: ** begin .cpp *** // Report class implementation BOOL CMBCComTransaction<TRANS_REPORT_SYSTEM_STATUS>::Execute(R *pASDU) { TRANS_REPORT_SYSTEM_STATUS *pTrans = pASDU; // Re-set the reported status flag to eliminate alarms during this re-sync m_pGateway->m_bReportedStatus = FALSE; . . . ** end .cpp *** Any clues? Not sure what changed here. Thanks, Bob Tag: how to solve "Non-modal forms cannot be displayed in this host application" Tag: 251650
  - 20
    - COleMessageFilter::Register always returns FALSE I'm trying to create a situation such that a CArchive::ReadString can timeout. I derived a new class from both CArchive and COleMessageFilter. In that derived class I added an OnMessagePending method and also set up a timer so that it "triggers" after a set number of seconds, and should therefore invoke the OnMessagePending method. That OnMessagePending method does not get called, however, unless the Filter is "registered". So, after creating an instance of my derived class I call its Register method (actually, the base class's COleMessageFilter::Register method). But the call to Register always fails, returning FALSE. Anyone have a suggestion as to what I'm doing wrong? Tag: how to solve "Non-modal forms cannot be displayed in this host application" Tag: 251649
  - 21
    - Visual Studio NET Enterprise Architect 2002 and Visual Studio NET 2003 very hard is fix exactly group for this question.. but I am sure that some of people here have some experience with these compilers: Visual Studio NET Enterprise Architect 2002 and Visual Studio NET 2003 1. What is difference between Visual Studio NET Enterprise Architect 2002 and Visual Studio NET 2003 2. If I try user Visual Studio NET 2003, what I have not included inside (in compare with Visual Studio NET 2003)? 3. Why Visual Studio NET 2003 is created? 4. Have Microsoft some newer versions of Visual Studio NET? Tag: how to solve "Non-modal forms cannot be displayed in this host application" Tag: 251648
  - 22
    - CMenu from ID Hi, Is there any way to get a CMenu object from the ID of the menu? If not, what is the best way to get a CMenu object of a menu. Thanks Marcus de Leon Tag: how to solve "Non-modal forms cannot be displayed in this host application" Tag: 251639
  - 23
    - Function prototypes Hi, In my C++ book I am reading an example where they declare a prototype of a function this way: void swap(int *x, int *y) which is OKAY, I understand that this function takes 2 pointers. Then they go onto another example with a function prototype as follows: short Factor(int*, int*) which at my understanding again takes in 2 pointers. However the book does not go into any explaination on this different wrinkle of the prototype. Basically, why would I go with the (int*) as opposed to the (int *x). If I would explain this to myself, I guess its just two different ways of declaring the parameters of a function prototype !??! Where one declares it with variables and the other one doesn't. All input to this simple question is super appreciated!!!! -- Best regards Robert -- Best regards Robert Tag: how to solve "Non-modal forms cannot be displayed in this host application" Tag: 251638
  - 24
    - Pointer to member functions and inheritance Hey, I'm porting a relatively large chunk of code over from VC6 to 2005, I've run into an odd inheritance issue with class member pointers. We have an adapter system to generalise access to certain classes that goes like template <class T> class Adapter { public: template <long (T::*p)(int x)> class DoStuff { public: static long func(int x) { return 3; } // Obviously in real life it does a little more }; }; Given a simple class hierarchy: class A { public: long X(int a) { return 1; } }; class B : public A { public: long Y(int b) { return 2; } } ; The following code builds fine on VC6, but fails on 2005 int main(int argc, char* argv[]) { long (B::*fn1)(int); long (*fn2)(int); long (*fn3)(int); fn1 = &B::X; // OK fn2 = Adapter<B>::DoStuff<&B::X>::func; // C2440: // 'specialization' : cannot convert from 'overloaded-function' to 'long (__thiscall B::* )(int)' fn3 = Adapter<A>::DoStuff<&B::X>::func; // OK } In short, to fix it we had to add an override of X() to B, which called __super::X(), which is hardly ideal. Anyone any thoughts on where this fits in? Thanks, Brendan. Tag: how to solve "Non-modal forms cannot be displayed in this host application" Tag: 251630
  - 25
    - What is the most elegant way to convert string from unicode to ANSI? Hi, again. I set my project UNICODE, and use TCHAR, wstring, and so on. But, some legacy api need ANSI, so I use WideCharToMultiByte(CP_ACP, ...) If I want to use it properly, I should call this method twice to know exact way for char* and dynamic allocation and Whew... Do you have any elegant and beautiful way to convert wstring (or CStringT<wchar_t> or wchar_t) to char ? Thanks in advance. Tag: how to solve "Non-modal forms cannot be displayed in this host application" Tag: 251622
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  - 1
    - Internationalized font Hi, Env: Windows2000, VC++6.00 I just made a MFC based application under English version of VC++6. All characters in the app are in English and it can be run on DBCS(Double-byte Character Set) environment, such as Japanese, Chinese Windows. But I find out the font sizes(height, width, interval and so on) are different between English OS and DBCS OSs. The current font I set in my dialog is "MS Sans Serif". From MSDN, I know that it will be changed into system font on DBCS OSs. I wonder if there is a font(Dialog's font or CStatic's font ) that can keep the same sizes in all OSs? Please help! William Tag: how to solve "Non-modal forms cannot be displayed in this host application" Tag: 251618
  - 2
    - Weird output ? Hi there, I have been trying for 2 hours and I can't understand the output of my program. If you may please consider the following code fragment: //================================================== //================================================== #include <iostream> using namespace std; class SimpleCat { public: SimpleCat(); ~SimpleCat(); int GetAge(int Decision); void SetAge(int age, int Decision); private: int itsAge_Val; int itsAge_Ref; int itsAge_Pointer; int itsAge_PHeap; }; SimpleCat::SimpleCat() { cout << "Constructor called. \n"; itsAge_Val = 0; itsAge_Ref = 0; itsAge_Pointer = 0; itsAge_PHeap = 0; } SimpleCat::~SimpleCat() { cout << "Destructor called \n"; } void SimpleCat::SetAge(int age,int Decision) { switch (Decision) { case 1: itsAge_Val = age; break; case 2: itsAge_Ref = age; break; case 3: itsAge_Pointer = age; break; case 4: itsAge_PHeap = age; break; default: itsAge_Val = 99; itsAge_Ref = 99; itsAge_Pointer = 99; itsAge_PHeap = 99; break; } } int SimpleCat::GetAge(int Decision) { switch (Decision) { case 1: return itsAge_Val; break; case 2: return itsAge_Ref; break; case 3: return itsAge_Pointer; break; case 4: return itsAge_PHeap; break; default: cout << "Default Decision"; break; } } void Function0(SimpleCat theCat); //Passing an object by value void Function1(SimpleCat & theCat); //Passing by reference void Function2(SimpleCat *pRags); //Passing a by pointer void Function3(SimpleCat *pRags); //Pass ptr that points to obj on heap int main() { int a; SimpleCat Frisky; //Declare for passing by value SimpleCat RefFrisky; //Declared for passing by reference SimpleCat pFrisky; //Declared for passing by pointer SimpleCat * pRags = new SimpleCat; //Declared for passing by pointer that //points to an object on the heap Function0(Frisky); //Call by value Function1(RefFrisky); //Call by reference Function2(&pFrisky); //Call by pointer Function3(pRags); //Call by pointer that points to heap cout << Frisky.GetAge(1) << "\n"; cout << RefFrisky.GetAge(2)<< "\n"; cout << pFrisky.GetAge(3)<< "\n"; cout << pRags->GetAge(4)<< "\n"; delete pRags; //Clean up cin >> a; } void Function0(SimpleCat theCat) //Passing by value { theCat.SetAge(10,1); } void Function1(SimpleCat &theCat) //Passing by reference { theCat.SetAge(20,2); } void Function2(SimpleCat *pRags) //Passing by pointer { pRags->SetAge(30,3); } void Function3(SimpleCat *pRags) //Passing by heap pointer { pRags->SetAge(40,4); } //================================================== //================================================== Believe it or not this is the output I get: Constructor called. Constructor called. Constructor called. Constructor called. Destructor called 0 20 30 40 Destructor called Now, didin't the definition of the function: Function0(Frisky); set itsAge_Val to 10 ? 1) Why is the output showing 0 instead of 10 ? 2) Shouldn't the first destructor be called after 0? Sorry about the lenghty example, however I had to show it all so there would be no confusion! All help appreciated! -- Best regards Robert Tag: how to solve "Non-modal forms cannot be displayed in this host application" Tag: 251614
  - 3
    - on file delete Hi, In my MFC app I need to receive a message from the system when the user deletes a file on the hard drive ( with the path and name of the file of course) I've looked thoughout the WIN API, but the closest message that I found is ON_WM_DEVICECHANGED Does such a message exist? Thanks. Tag: how to solve "Non-modal forms cannot be displayed in this host application" Tag: 251608
  - 4
    - multi line listbox Hello all I program win32 api in C and I need a multiline listbox, could anyone please tell me how I can accomplish that or refer me to some sample application. Thank you in advance Tag: how to solve "Non-modal forms cannot be displayed in this host application" Tag: 251606
  - 5
    - By Reference or By Pointer? Hi there! Between being a VC++ beginer and reading books with typo's in them, makes the learning curve quite complicated! Anyhow, I would like to clear something up here! IN THE BOOK EXAMPLE, it calls the following code fragment: Listing 12.1 Passing objects by reference and here is the example as written in the book: #include <iostream> using namespace std; class SimpleCat { public: SimpleCat(); SimpleCat(SimpleCat&); ~SimpleCat(); }; SimpleCat::SimpleCat() { cout << "Simple Cat Constructor... \n"; } SimpleCat::SimpleCat(SimpleCat&) { cout << "Simple Cat Copy Constructor... \n"; } SimpleCat::~SimpleCat() { cout << "Simple cat destructor...\n"; } SimpleCat FunctionOne (SimpleCat theCat); SimpleCat* FunctionTwo (SimpleCat *theCat); int main() { cout << "Making the Cat....\n"; SimpleCat Frisky; cout << "Calling Function1,,,\n"; FunctionOne(Frisky); cout << "Calling Function2,,,\n"; FunctionTwo(&Frisky); return 0; } // FunctionOne, passes by value SimpleCat FunctionOne(SimpleCat theCat) { cout << "Function1 returning,,,\n"; return theCat; } //FunctionTwo, passes by reference SimpleCat* FunctionTwo (SimpleCat *theCat) { cout << "Function2 returning,,,\n"; return theCat; } is FunctionTwo receiving the object by reference or by pointer? Anyone? -- Best regards Robert Tag: how to solve "Non-modal forms cannot be displayed in this host application" Tag: 251595
  - 6
    - Passing an object pointer to function Hi, Below I am passing an object to a function by reference. Please consider the following code fragment: #include <iostream> using namespace std; class SimpleCat { public: SimpleCat(); ~SimpleCat(); int GetAge() {return itsAge;} void SetAge(int age) {itsAge = age;} private: int itsAge; }; SimpleCat::SimpleCat() { cout << "Constructor called. \n"; itsAge = 1; } SimpleCat::~SimpleCat() { cout << "Destructor called \n"; } void Function1(SimpleCat *pRags); int main() { int a; SimpleCat Frisky; Function1(&Frisky); cout << Frisky.GetAge(); } void Function1(SimpleCat *pRags) { pRags->SetAge(50); } The above code works fine, however what if in main I wanted to create a pointer to an object on the heap using the following line: SimpleCat * pRags = new SimpleCat; and then passing only the pointer of the object to my function: Please consider the following code which does not complile? #include <iostream> using namespace std; class SimpleCat { public: SimpleCat(); ~SimpleCat(); int GetAge() {return itsAge;} void SetAge(int age) {itsAge = age;} private: int itsAge; }; SimpleCat::SimpleCat() { cout << "Constructor called. \n"; itsAge = 1; } SimpleCat::~SimpleCat() { cout << "Destructor called \n"; } void Function1(int *pRags); int main() { int a; SimpleCat * pRags = new SimpleCat; Function1(&pRags); cout << Frisky.GetAge(); } void Function1(int *pRags) { pRags->SetAge(50); } I don't know if this is possible to do in VC++. And since I am passing a pointer to an object on the heap, is my function prototype an header correct? void Function1(int *pRags) I am sorry if this is a stupid question but the book examples somehow don't go into this probability, so I am just being curious! Anyone, all help greatly appreciated! -- Best regards Robert Tag: how to solve "Non-modal forms cannot be displayed in this host application" Tag: 251579
  - 7
    - How to get Computer Name given IP address? Hi, I'm writing a program that is running on a network and it has to "discover" the names of the other computers on the network in that same workgroup. The good thing is that it knows all the IP addresses of the computers on the network for which it wants the names. Is there a function that will allow me to do this? I'm aware of this: BOOL GetComputerName( LPTSTR lpBuffer, // address of name buffer LPDWORD nSize // address of size of name buffer ); It is however only useful on the computer where my code runs, not for getting the names of the others. The network is a regular Client For MS Networks with Workgroup (No Domain) running. Thanks, RussR Tag: how to solve "Non-modal forms cannot be displayed in this host application" Tag: 251577
  - 8
    - VC++ and Visual Source Safe Sorry about being off topic, but I get no help on the VSS groups. I want to move my VC6 projects off my local drive and up to our network. Redundant backups, since we also use VSS on the network. When I open a moved project, Visual Studio 6 no longer recognizes it as being under source control. I have set the "default directory" in VSS to point to the new location. What else do I need to do to synch VSS and VC again? Thanks Tag: how to solve "Non-modal forms cannot be displayed in this host application" Tag: 251574
  - 9
    - .dll refuses to unload Hello all, I am calling LoadLibrary() exactly once to dynamically load a .dll. I see the DLL_PROCESS_ATTACH section of DllMain() being entered exactly once. Later, I call FreeLibrary() to unload that .dll. However, the DLL_PROCESS_DETACH section of DllMain() does not get invoked. Furthermore, destructors of static objects in the .dll are not executed. So, it appears that the .dll is just not unloading for some reason. The reference count for this .dll should be at 0 since I've confirmed that LoadLibrary() and FreeLibrary() are both being called exactly once, and in that order. What are some possible causes of this problem? How can I confirm that the reference count is indeed going to 0? Thanks, Dave Tag: how to solve "Non-modal forms cannot be displayed in this host application" Tag: 251571
  - 10
    - Different version # and different configurations I want to apply a different version # to a specific configuration to my project. For example, I have 2 configurations, 1st edition and 2nd edition. For 1st edition I want to use 7.2.100.3 as the version and 7.2.200.7 for the second version. Is there a way to assign a version to a specific configuration? I created a second version in the Resources area, but dont know where to assign it to the specific configuration. I"m using VS6.0 Thanks. -C Tag: how to solve "Non-modal forms cannot be displayed in this host application" Tag: 251568
  - 11
    - Any merits of virtual operators? Hello, I'd like to ask a question, which is somewhat theoretical. As we all know, many overloaded operators can be virtual. The more I think about it, the more I wonder what can be a possible scenario where I need virtual operator. So far, here are the points: 1. Overloaded operator must have at least one parameter whose type is class or reference to class. So, derived class will have other type for that parameter, hence virtuality doesn't give us anything. 2. If I declare operator in derived class with same signature (with covariant return type, probably), then inside operator's body I need to determine actual type of the argument (by means of RTTI or others) in order to perform operation correctly. 3. When deriving new class I'll need to overload virtual operator with all base types, which occur in hierarchy. So, with each new derivation operators will grow as snowball. All above mentioned issues can be solved easily and elegantly with regular virtual functions. What you guys think about it? Thanks in advance Alex Tag: how to solve "Non-modal forms cannot be displayed in this host application" Tag: 251565
  - 12
    - Loaded DLLs Hello all, For a given process, how may I get a snapshot at an instant in time of what DLLs it has loaded? This question is asked in the context of VC++ 6.0. Thanks, Dave Tag: how to solve "Non-modal forms cannot be displayed in this host application" Tag: 251560
  - 13
    - wav file format Hello, I am trying to write a *.wav file. I read about its format and now I can write a *.wav file but when I am trying to play it with Media player, it reports that the file is corrupted which I think means that there is a problem on the file format but I couldn't find what is it. Is there any application that could read a wav file and report if there is any problem in its format? Is there any code that helps me to find what I can use to write a wav file? Any help is very appreciated. Best regards Tag: how to solve "Non-modal forms cannot be displayed in this host application" Tag: 251559
  - 14
    - How to I change between 2 printers. I have a VC++ program that currently prints to one printer exactly how I want it to using the CreatePrinterDC method. However, now I need to be able to direct different print jobs to different printers either on the machine or on the network. How do I get a device context for these other printers that are not the default printer? And how do I tell one printer from another under program control? Can someone point me to an example? Charles L. Tag: how to solve "Non-modal forms cannot be displayed in this host application" Tag: 251555
  - 15
    - Dynamically Set Menu Item Text Hi, Does anybody know if there is a way to dynamically set the menu item text in MFC? Thanks Marcus de Leon Tag: how to solve "Non-modal forms cannot be displayed in this host application" Tag: 251549
  - 16
    - validating input file streams This may seem like a stupid question, but there's always something that has bothered me about this. If I'm using an ifstream object to read from a file, are there any other standard checks I should use besides is_open() before attempting to read from the file? I recall that in VC6 there was a fail() check that I've seen used a lot with is_open(), but I can't seem to find that in the current standard (not that I'm suggesting fail() and is_open() would be completely sufficient when used together). Is it smarter to use try-catch around a read attempt, catching the "failure"? I'm just afraid that there is the possibility of opening an "invalid" file (whatever that means), and is_open() would still return true. Am I looking too far into this? Thanks in advance. Tag: how to solve "Non-modal forms cannot be displayed in this host application" Tag: 251548
  - 17
    - ITaskScheduler::Enum 80070005 Hi All, Just revisiting a problem I had back in April, and I've still not found a solution. I'm trying to work with the Task Scheduler from a VC++ .NET application on a single Windows 2003 SP1 server, and I'm running into an error when trying to enumerate the list of scheduled tasks using this code: CComPtr< ITaskScheduler > pITS; TESTHR( CoCreateInstance(CLSID_CTaskScheduler, NULL, CLSCTX_INPROC_SERVER, IID_ITaskScheduler, (void **) &pITS ) ); CComPtr< IEnumWorkItems > pIEnum; TESTHR( pITS->Enum(&pIEnum) ); The resulting HRESULT is -2147024891 (0x80070005), which is Access Denied, so I'm wondering what I need to change to get this to work... Do I have to use impersonation when creating the instance of the Scheduler? Do I need to run the Task Scheduler under a different Log On than the Local System account? Do I need to change the Security or Activation (currently a Library application) of my COM+ application? Any pointers would be appreciated. Regards...Andrew Tag: how to solve "Non-modal forms cannot be displayed in this host application" Tag: 251545
  - 18
    - Virtual functions not calling higher class Hi, I am working using VS 7.1 and have the following problems; class CBase { [...] protected: virtual void OnCallback_Enter(int rc) {}; virtual void OnSys_Enter(int rc); static void AWAPI_enter( ); } class CBot : public CBase { [...] protected: virtual void OnCallback_Enter(int rc); } void CBase::OnSys_Enter(int rc) { [...] OnCallback_Enter( ); } OnCallback_Enter always calls the CBase version, depsite one being available in CBot, when I make the CBase version pure virtual the OnSys_Enter function complains about calling a pure virtual function. This all seems like it is setup correctly to me, so why would I be experiencing the error; or have I missed something obvious. -- - Mark Randall http://zetech.swehli.com Tag: how to solve "Non-modal forms cannot be displayed in this host application" Tag: 251543
  - 19
    - I can't pass CString or wstring to other project. Hi, I've had sub-project. When I made a method which has 2 or 3 CString or std::wstring parameters, it can pass it without any problem. But, when I tried to make that kind of method in other project, (it's tied by Dependency and I've set Unicode, Multi-Thread Dll Debug. All Project have same settings) it makes that kind of link error. ClassWizard error LNK2019: unresolved external symbol "public: class ATL::CStringT<wchar_t,class StrTraitMFC_DLL<wchar_t,class ATL::ChTraitsCRT<wchar_t> > > __thiscall maymfc::CPathInfo::GetFolderPath(enum maymfc::CPathInfo::FolderType)" (?GetFolderPath@CPathInfo@maymfc@@QAE?AV?$CStringT@_WV?$StrTraitMFC_DLL@_WV?$ChTraitsCRT@_W@ATL@@@@@ATL@@W4FolderType@12@@Z) referenced in function "private: void __thiscall CClassWizardDlg::InitTheme(void)" (?InitTheme@CClassWizardDlg@@AAEXXZ) (I tried to call CPathInfo::GetFolderPath() ( it return CString. ) from CClassWizardDlg class. The class method looks weird but, it just pilot program, anyway. :) ) So, what is the problem? Before I try to UNICODE, that kind of problem doesn't happen, I guess. Thanks in advance. Tag: how to solve "Non-modal forms cannot be displayed in this host application" Tag: 251541
  - 20
    - turning off lnk 4006 Hi All, Im sorry if this is OT, if it is, kindly point me the way, please ? I get quite a few lnk4006 warnings from my project, which uses some old c libraries. This is ok though, as Im forcing it with /FORCE:multiple. I cant seem to be able to tell the VC6 compiler to shut up, however and printing these warning messages takes up almost 10% of the compilation-time. Anyone know how to silently pass by these warningmessages ? thanks, Jonathan Tag: how to solve "Non-modal forms cannot be displayed in this host application" Tag: 251539
  - 21
    - This Do Modal loop - is it safe? Any comments (except, "mmnn, why don't you just use a modal dialog?") Is the following 'DoModal' safe? It seems to work on Win2K. void CGeneralWindow::DoModalMessagePump(void){ m_bIsDoingModal= true; // Enter the message loop MSG msg; ZeroMemory(&msg, sizeof(msg)); while(m_bIsDoingModal){ if(GetMessage(&msg, NULL, 0, 0)){ TranslateMessage(&msg); DispatchMessage(&msg); } else{ // Re-post the message that we retrieved PostQuitMessage(msg.wParam); m_bIsDoingModal= false; return; } } } Elsewhere in the window code is this snippet from a WM_COMMAND handler. Essentially, the only way the window ends its 'modal' life is when one of it's two buttons is clicked (or the app quits elswhere) - a tray menu. So, here, if its the OK button, I reset the 'doing modal' flag, fade the window away (in SetShow(false)) and then destroy the window. Any messages not handled in the local message pump (such as all the destroy non client messages etc.) get handled in the main app message pump (or the next 'modal' window). if(idCtrl == IDOK){ // signal to break out of local modal loop m_bIsDoingModal= false; SetShow(false); DestroyWindow(m_hwnd); m_hwnd= NULL; } Tag: how to solve "Non-modal forms cannot be displayed in this host application" Tag: 251536
  - 22
    - Moving files in C++ using Windows SDK Hi, What am I trying to achieve is to move a directory (or a set of files using wildcards) from one computer on the network to the computer that the code that's doing the moving is running. The systems are running WindowsXP Professional. Permissions on each directory is set to FULL for Everyone. So for example, \\computerA runs a code that will move the directory, \\computerB\\apps to c:\apps, where c:\apps is on computerA. Here's the line of code that I'm using which I got from the Windows SDK at http://msdn.microsoft.com/library/default.asp?url=/library/en-us/fileio/fs/movefileex.asp void main() { //here's the line of code that does the moving int result= MoveFileEx("\\\\computerB\\apps","c:\\apps", MOVEFILE_COPY_ALLOWED | MOVEFILE_REPLACE_EXISTING | MOVEFILE_WRITE_THROUGH); //this is to print out the error message when it fails LPVOID lpMsgBuf; FormatMessage( FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM, NULL, GetLastError(), MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language (LPTSTR) &lpMsgBuf, 0, NULL ); printf("%s\n",lpMsgBuf); // Free the buffer. LocalFree( lpMsgBuf ); } I get an error message usually saying access denied. Permissions are all set full for everyone, so I'm stumped. If I change it to copy from one directory on my computer to another directory on my computer, it only works if the target directory doesn't already exist. If it does exist, I get an access denied error....why? I've set all the MOVEFILE flags to avoid this. Thanks, RussR Tag: how to solve "Non-modal forms cannot be displayed in this host application" Tag: 251529
  - 23
    - Error while calling the function HrESERestoreAddDatabase 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 HrESERestoreAddDatabase as follows: typedef HRESULT (ESEBACK_API *HrESERestoreAddDatabase) (IN HCCX hccxRestoreContext,IN WCHAR * wszDatabaseDisplayName,IN GUID guidDatabase,IN WCHAR * wszDatabaseStreamsS,OUT WCHAR ** pwszDatabaseStreamsD); HrESERestoreAddDatabase fnMNURestoreAddDatabase = NULL; fnMNURestoreAddDatabase = (HrESERestoreAddDatabase) GetProcAddress (g_hESEDll,"HrESERestoreAddDatabase"); if(fnMNURestoreAddDatabase) hr = (fnMNURestoreAddDatabase) (phccxMNURestoreContext, szMNUDatabaseDisplayName, guidMNUDatabase, wszMNUDatabaseStreamsS , &pwszDatabaseStreamsD); if(hr != S_OK) { DWORD dwError = GetLastError(); 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; strMessage.Format(_T("failed with error %d : %s"),dw,lpMsgBuf); AfxMessageBox(strMessage); LocalFree(lpMsgBuf); return MNU_EXCHANGE_RESTORE_FAILURE; } All the inputs are correct. Output: hr = -939647167 dw = 0 The operation completed successfully. Expected Output: hr = S_OK I am getting hr which is not equal to S_OK but the GetLast Error returns 0 which corresponds to "The operation completed successfully.". Can anyone please point the mistake in my code or give me sample code for the "HrESERestoreAddDatabase" Function? Thanks, Viraj a.viraj@mobiliti.com http://www.mobiliti.com 732-248-8300 ext 234 Tag: how to solve "Non-modal forms cannot be displayed in this host application" Tag: 251528
  - 24
    - error C2065/error C3861: 'm_nBackStyle': identifier not found, eve Dear Experts, I need to compile an old project (built with VC++) in Visual Studio .Net 2003. The project is going to build a DLL. When i try to compile the project, i got the following errors: c:\thepath\aaa.cpp(890): error C2065: 'm_nBackStyle' : undeclared identifier c:\thepath\aaa.cpp(890): error C3861: 'm_nBackStyle': identifier not found, even with argument-dependent lookup c:\thepath\aaa.cpp(891): error C3861: 'm_nBackStyle': identifier not found, even with argument-dependent lookup c:\thepath\aaa.cpp(892): error C3861: 'm_nBackStyle': identifier not found, even with argument-dependent lookup in aaa.cpp, 'm_nBackStyle' are used as the following: // Set up background mode. 890: if(m_nBackStyle != 1 && m_nBackStyle != 2) 891: m_nBackStyle = 2; 892: SetBkMode(di.hdcDraw, m_nBackStyle); in aaa.h, i have: #include <atlctl.h> and aaa.h is already included in aaa.cpp. I found the following declaration in ddd.h, which is in another project (the solution has sevreal projects): LONG m_nBackStyle; Is it because my project is not set correctly? When i tried to open it in Visual Studio .Net 2003, i was asked to transfer the project, i wonder if after the transfer, the dependence relationship of the projects was lost. I found some info about m_nBackStyle at: http://msdn.microsoft.com/library/default.asp?url=/library/en-us/wceatl/htm/cccontrl_72.asp Could you please help me fix the problem. Thanks a lot! Vic Tag: how to solve "Non-modal forms cannot be displayed in this host application" Tag: 251527
  - 25
    - VC6 MSDN I had to reinstall my Visual Studio 6 and I can't remember which version of MSDN was the last to support it. July 2001 maybe? Anybody know? Thanks Tag: how to solve "Non-modal forms cannot be displayed in this host application" Tag: 251522

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

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Re: how to solve "Non-modal forms cannot be displayed in this host application" by Igor

Igor
Fri Aug 19 08:43:29 CDT 2005

arbidol <arbidol@tom.com> wrote:
> 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."

http://groups.google.com/group/microsoft.public.vc.activex.templatelib/browse_frm/thread/be40b93d38eab41a/db96ff37c4ad4aac
http://support.microsoft.com/kb/171978/EN-US/
http://support.microsoft.com/default.aspx?scid=kb;en-us;247791

--
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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