question about retrieving a volume name...

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  - 1
    - unresolved external symbol __abs64 Is _abs64 not available in the DLL libraries? I am using Visual Studio 2003. A program that uses the _abs64 function links fine with the multithread debug (/MTd), but not multithread debug dll (/MDd). Is this a bug or by design? Tag: question about retrieving a volume name... Tag: 247808
  - 2
    - should i do SysFreeString here? i'm just doing some wrap class for msxml and got some problem? i'm using the raw interface in msxml.h, not smart pointer. (visual studio 2003) sample code like this: //--start------------------------------------------- { IXMLDOMDocument* pDoc = NULL; HRESULT hr = ::CoCreateInstance(CLSID_DOMDocument, NULL, CLSCTX_INPROC_SERVER, IID_IXMLDOMDocument, (void**) &pDoc); hr = pDoc->put_async(VARIANT_FALSE); hr = pDoc->put_validateOnParse(VARIANT_FALSE); hr = pDoc->put_resolveExternals(VARIANT_FALSE); CComVariant varFile(_T("c:\\aa.xml")); VARIANT_BOOL status; hr = pDoc->load(varFile, &status); BSTR bstrXML = NULL; pDoc->get_xml(&bstrXML); //*********************** // doing some processing for bstrXML; // ... // SysFreeString(bstrXML); //should i do SysFreeString here? //*********************** pDoc->Release(); } //--end--------------------------------------------- i have used _CrtDumpMemoryLeaks() and _CrtSetDbgFlag ( _CRTDBG_ALLOC_MEM_DF | _CRTDBG_LEAK_CHECK_DF ) to detect memory leak. but whether i do SysFreeString or not, there is no memory leak detected. i believe use SysFreeString() here is a good behave. and i have viewed some code from others. someone use, someone not. i am very confused that is it necessary to do SysFreeString here? and anyone can help me? thanks! Tag: question about retrieving a volume name... Tag: 247807
  - 3
    - Scrollbar controls in Win32 -- Please help Bear with me, I'm a complete newbie to Win32 programming. I want a scrollbar in the upper corner of my app, but it's not showing up. Here is my code: #include "stdafx.h" #include <commctrl.h> #include "resource.h" LRESULT __stdcall wcexProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam) { switch(msg) { case WM_CREATE: { HWND hScroll; if(!(hScroll = CreateWindowEx(0L,"SCROLLBAR",NULL,WS_VISIBLE|WS_CHILD,0,0,200,CW_USEDEFAULT,hwnd,NULL,GetModuleHandle(NULL),NULL))) MessageBox(NULL,"Scrollbar could not be created","error",0); } break; default: return DefWindowProc(hwnd,msg,wParam,lParam); } return 0; } int __stdcall _tWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow) { InitCommonControls(); HWND hwnd; WNDCLASSEX wcex; wcex.cbSize = sizeof(WNDCLASSEX); wcex.style = 0; wcex.lpfnWndProc = wcexProc; wcex.cbClsExtra = 0; wcex.cbWndExtra = 0; wcex.hInstance = hInstance; wcex.hIcon = LoadIcon(NULL,(LPCSTR)IDI_RACER); wcex.hCursor = LoadCursor(NULL,IDC_ARROW); wcex.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1); wcex.lpszMenuName = NULL; wcex.lpszClassName = "wcex"; wcex.hIconSm = LoadIcon(NULL,(LPCSTR)IDI_SMALL); if(!RegisterClassEx(&wcex)) { MessageBox(NULL,"Couldn't register wcex","error",0); } if(!(hwnd = CreateWindowEx(0,"wcex","Main Window",WS_OVERLAPPEDWINDOW,CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,NULL,NULL,hInstance,NULL))) { MessageBox(NULL,"Could not create main window","error",0); } ShowWindow(hwnd,nCmdShow); UpdateWindow(hwnd); MSG msg; while(GetMessage(&msg,NULL,0,0) > 0) { TranslateMessage(&msg); DispatchMessage(&msg); } return msg.wParam; } Tag: question about retrieving a volume name... Tag: 247791
  - 4
    - Theoretical Question A colleague posed an interesting question to me today. In C or C++, why can't I write this: void MyFunction() { unsigned var : 14; // ... } The compiler already knows how to do the shifting and masking for bit fields in structures. The above is nothing more than syntactic sugar for, say: void MyFunction2() { struct { unsigned f : 14; } var; // ... } But I could think of no good reason why the first one couldn't also be done, and there are certain problem domains where that kind of thing could prove useful. -- - Tim Roberts, timr@probo.com Providenza & Boekelheide, Inc Tag: question about retrieving a volume name... Tag: 247789
  - 5
    - COM question This might be considered an elementary question for those with COM emblazened upon their belt buckles, but I know just enough about it to be dangerous! Here goes... If I include <dskquota.h>, I can use the following code just fine: IDiskQuotaControl *lpDiskQuotaControl; IEnumDiskQuotaUsers *lpEnumDiskQuotaUsers; HRESULT hr = CoCreateInstance(CLSID_DiskQuotaControl, NULL, CLSCTX_INPROC_SERVER, IID_IDiskQuotaControl, (LPVOID*)&lpDiskQuotaControl); if (SUCCEEDED(hr)) { hr = lpDiskQuotaControl->Initialize(_bstr_t("c:\\"), TRUE); if (SUCCEEDED(hr)) { hr = lpDiskQuotaControl->CreateEnumUsers(NULL, 0, DISKQUOTA_USERNAME_RESOLVE_SYNC, &lpEnumDiskQuotaUsers); ... } lpDiskQuotaControl->Release(); } If, however, I wanted to use smart pointers instead with #import <dskquota.dll> then the CreateEnumUsers() method does not show up in the .tlh or .tli file. There also does not appear to be an interface for the users (plural). Is it supposed to be this way, or what am I doing wrong? Thanks, DC Tag: question about retrieving a volume name... Tag: 247788
  - 6
    - How to get selected files Filename and full path? Hi, i am working on a kind of protection application that must react when a user selects (only hover resp. mark, not execute!) a file that in turn will be market as selected. I need to find out the files full path and name. How can i do this. Is there a WM_ Message or equal available for this? Systemwide Windows Hook? How can this be accomplished.....? :-) Thanks in advance... Kerem Gümrükcü Tag: question about retrieving a volume name... Tag: 247765
  - 7
    - ::exception Hi, Someone can explain to me the diference between CODE_A and CODE_B? //double calc( int a, int b ) ; //double calc( int a, int b ) throw(MathError); why "throw(MathError);" CODE_A -------------------------------------------------------------- class MathError { private: string message; public: MathError( const string& s) : message(s) {} const string& getMessage() const {return message;} }; double calc( int a, int b ) throw(MathError); int _tmain(int argc, _TCHAR* argv[]) { int x, y; bool flag = false; do { try // try block { cout << "Enter two positive integers: "; cin >> x >> y; cout << x <<"/"<< y <<" = "<< calc( x, y) << '\n'; flag = true; // To leave the loop. } catch( MathError& err) // catch block { cerr << err.getMessage() << endl; } catch( ...) { cerr << "3333" << endl; } }while( !flag); // continued ... return 0; } double calc( int a, int b ) throw (MathError) { if ( b < 0 ) throw MathError("Denominator is negative!"); if( b == 0 ) throw MathError("Division by 0!"); return ((double)a/b); } CODE_B -------------------------------------------------------------- class MathError { private: string message; public: MathError( const string& s) : message(s) {} const string& getMessage() const {return message;} }; double calc( int a, int b ) int _tmain(int argc, _TCHAR* argv[]) { int x, y; bool flag = false; do { try // try block { cout << "Enter two positive integers: "; cin >> x >> y; cout << x <<"/"<< y <<" = "<< calc( x, y) << '\n'; flag = true; // To leave the loop. } catch( MathError& err) // catch block { cerr << err.getMessage() << endl; } catch( ...) { cerr << "3333" << endl; } }while( !flag); // continued ... return 0; } double calc( int a, int b ) { if ( b < 0 ) throw MathError("Denominator is negative!"); if( b == 0 ) throw MathError("Division by 0!"); return ((double)a/b); } Thanks Tag: question about retrieving a volume name... Tag: 247760
  - 8
    - sending message from UI thread to the main thread I have a main control in which I have a loop which processes video frames. To be able to see the results in real time, I created a dialog in another thread which displays the data as they become available (the main thread populates a global array, and the second thread picks the last element and displays it.) I need to access some functions (e.g. change settings of video aquisition) in the main thread from within the second thread while the loop in the main thread is running. I know I have to use messages to do that, but SendMessage needs a pointer to the main window, and I can't pass a CWnd * to the secondary thread. So, how do I call a main thread function from a secondary thread? Here's a sketch of what I have now: //in main control: pThread = (CUIThread*)AfxBeginThread(RUNTIME_CLASS(CUIThread)); pThread->m_pMainWnd = FromHandle(this->m_hWnd);//this does not work //in UIThread class: CUIThread::InitInstance() { CWnd * cwnd = m_pMainWnd; m_plot = new Plot_dialog(cwnd); return TRUE; } //in Plot_dialog: Plot_dialog::Plot_dialog(CWnd* pParent) {} Plot_dialog::UpdateSetting() { pParent->SendMessage(WM_PLOT_TO_MAIN, 0, (LPARAM) &CCM); } Tag: question about retrieving a volume name... Tag: 247759
  - 9
    - How to modify CString in the debugger for VC6.0? How can a CString variable be modified in the debugger with VC 6.0? For instance I want to change "xxx" to "" so that I can test a certain code path. Thanks. Tag: question about retrieving a volume name... Tag: 247754
  - 10
    - memory allocation problems Hello, this is probably most fundamental but I don't code in C++ often and I'm just not getting why the code is crashing with a: Unhandled exception at 0x77f75a58 in FileIOTest.exe: User breakpoint I have a function that calls this line of code: char* buffer = new char[sizeof(char) * (strlen(curtime) + strlen(msg) + 3)]; The first time I call the function, all is well but subsequent times it crashes with the above exception. All I'm doing is a strcpy, strcat and writing to a file in the funciton and then I delete buffer memory using delete. What could the problem be. Sorry is this is just really stupid... Steve Tag: question about retrieving a volume name... Tag: 247739
  - 11
    - Converting a 4 byte char to a double Hi there, I'm trying to convert the 4 bytes returned by a time server to a double value, I know this should be pretty straight forward but I think I have gone wrong somewhere along the lines. At the moment I am doing the following string pStrBuffer; <pStrBuffer is now assigned the value> double pDblSeconds; int pIntChar; for(pIntChar=0;pIntChar<pStrBuffer.length()-1;pIntChar++) { double pDblCurValue = 0; pDblCurValue = (int)pStrBuffer.c_str()[pIntChar]; pDblCurValue = ((int)pDblCurValue << (8*pIntChar)); pDblSeconds += pDblCurValue; } Unfortunately I am recieving 0 as my value at the moment. Any ideas on what I'm doing wrong? Thanks laods in advance! -- Nick Pateman --------------------------------------------------------------- Any views expressed above are my own Without predjudice Tag: question about retrieving a volume name... Tag: 247737
  - 12
    - OT: How to search binary occurences in files Hi, In case I have a set of files to search in for a binary pattern (For example FF A1 23 0a), is there any free software which can do this job? I don't want to open a hell lots of files to search for the stream individually... cos it takes ages to do so.... I have already about > 100 files to search in..... sorry for OT question.... Thanks Jack Tag: question about retrieving a volume name... Tag: 247736
  - 13
    - Passing GET variables to a CGI script from C Hi, I'm trying to pass variables to a local web page (with JavaScript) from C. I've tried to do this with ShellExecute and WinExec as follows: ShellExecute(m_hWnd, "open", "file:///c:/some_page.html?var1=some_val&var2=some_other_val", "", NULL, SW_SHOWNORMAL); ... which opens up the browser and webpage correctly, but the query string gets lost along the way. I've also tried setting the QUERY_STRING environment variable prior to loading the page, which doesn't work - I'm assuming it gets overwritten when the page loads with no query string appended to the url. Any suggestions? Thanks, -Nick Tag: question about retrieving a volume name... Tag: 247735
  - 14
    - vector and debug mode Hi I am using vector class (via #include<vector>) as a dynamic array. vector <int> list; int array [10]; With the array definition I can se eg. the 7. element in the watch window in the debugger (when execution has stopped due to a breakpoint or an exception) by typing array[7]. This is not possible for the vector definition. Is it possible to somehow circumvent this, so I can see eg. the 7. element of the list in the watch window?? Any ideas would be welcome! Regards, Peter Stausholm Tag: question about retrieving a volume name... Tag: 247730
  - 15
    - GetOpenFileName set to "My Computer" How do I set the default location to "My Computer" when using the GetOpenFileName call? I have tried the following but CSIDL_DRIVES doesn't appear to work. Any ideas? WCHAR szFile[260] = _T("text.txt"); WCHAR szPath[MAX_PATH] = _T(""); LPITEMIDLIST pidl; HRESULT hr = SHGetSpecialFolderLocation(NULL, CSIDL_DRIVES, &pidl); if(SUCCEEDED(hr)) SHGetPathFromIDList(pidl, szPath); ZeroMemory(&ofn, sizeof(OPENFILENAME)); ofn.lStructSize = sizeof(OPENFILENAME); ofn.hwndOwner = hwnd; ofn.lpstrFile = szFile; ofn.nMaxFile = sizeof(szFile); ofn.lpstrFilter = _T("All\0*.*\0Text\0*.txt\0"); ofn.nFilterIndex = 1; ofn.lpstrFileTitle = NULL; ofn.nMaxFileTitle = 0; ofn.lpstrInitialDir = szPath; ofn.Flags = OFN_PATHMUSTEXIST | OFN_FILEMUSTEXIST; if(GetOpenFileName(&ofn)==TRUE) // File dialog Open selected {} -- -- mnlarsen Tag: question about retrieving a volume name... Tag: 247729
  - 16
    - Need some help on ActiveX control, interface declarations Hi, I have an ATL composite control, I have declared an inteface method of the control as taking a BOOL datatype. When I insert this component into the client program. The code that is generated has the method taking a long data type. When I call a component method taking about 16 parameters in which some of the parameters are BOOL (they get translated in the client to long as I explained earlier) when I make a call too the component method.the parameters are not being passed correctly to the component. Can the esteemed members please help me out on this. Regards, D.Ramesh Tag: question about retrieving a volume name... Tag: 247725
  - 17
    - warning LNK4221 Hi, Can anyone explain me the warning which says "warning LNK4221: no public symbols found; archive member will be inaccessible". I'm able to build the static lib, but unable to debug the values (when used in the test application by static linking this library). I didn't find info. about this warning in MSDN. Thanks, Aparna Tag: question about retrieving a volume name... Tag: 247723
  - 18
    - CHARFORMAT::dwReserved ? Hi In writing a syntax highlighter, I want to be able to tell whether a certain portion of text in the richedit control is block comments or line comments. However these will both be the same color. Is there any reason why I shouldn't use the dwReserved flag of the CHARFORMAT structure? It says in the documentation 'reserved - must be zero'. But does that actually mean 'reserved - completely ignored' ? Tag: question about retrieving a volume name... Tag: 247715
  - 19
    - Static/ non-static member access // in .h file class CSingleton { public: static CSingleton* Instance(); protected: CSingleton(); CSingleton(const CSingleton&); CSingleton& operator= (const CSingleton&); ~CSingleton(); private: static CSingleton* pinstance; }; // in .cpp file CSingleton* CSingleton::pinstance = 0; CSingleton::CSingleton() { } CSingleton::~CSingleton() { } CSingleton* CSingleton::Instance () { if (pinstance == 0) { pinstance = new CSingleton(); //Line A pinstance->DummyFn(); //Line B //CSingleton sgTon; } return pinstance; } In Line A, in the above implementation of a Singleton class: why is the static method Instance() allowed to create an instance of the class on the heap, and thereby invoke the constructor (which is non-static)? Similarly, in Line B a non-static method 'DummyFn' is allowed to be invoked from the static method. Why is it so? TIA, Sucharit Tag: question about retrieving a volume name... Tag: 247713
  - 20
    - How to make ActiveX component in VC++ 6.0 ? Hi, I have a set of programs...I need to make an Active X component over those functions... Suggestions required... Thanks, a.a.cpp Tag: question about retrieving a volume name... Tag: 247711
  - 21
    - Catch SEH with info log When catching a SEH, how to log info like a stack trace? What kind of thread info needs to be logged? What others helpful? Tag: question about retrieving a volume name... Tag: 247710
  - 22
    - r e g e x _ c o n s t a n t s : : o p t i m i z e The subject line (with spaces removed) produces a "googlewhack". The only page however doesn't provide any info, so can anyone here suggest what it actually does and is it advisable to use? Tag: question about retrieving a volume name... Tag: 247707
  - 23
    - How to resolve Stock Overflow issue Hi Friends, I have developed the application compatible for Windows 2000, XP and 98. While running the application in windows 98, i have tried to resize the window. At that time i got the exception like "Stock Overflow". But i am not get the error in Windows 2000 and XP. Please help me to resolve the issue in Win98. Regards, Prakash. Tag: question about retrieving a volume name... Tag: 247694
  - 24
    - Template Compiler Error (array/pointers) Hi. The following sample is fine for Comeau Compiler. Howver VC7.1 does not compile line #2, but accepts line #1. It looks like it-s trying to unnecessarily let "double [3][4]" decay into "double (*)[4]" (or whatever) For the moment we'll stick to the pointer workaround, but can anyone try VC8.0 as well? Thanks MH ////////////////////////////////////////////////////////////////////////// #include <cstddef> using std::size_t; template <typename matrix_t> struct matrix_traits { typedef typename matrix_t::value_type value_type; typedef matrix_t copy_type; }; template <typename scalar_t, size_t R, size_t C> struct matrix_traits< scalar_t [R][C] > { typedef scalar_t value_type; typedef value_type copy_type[R][C]; }; template <typename matrix_t> size_t FAKE_rank(const matrix_t& m, const typename matrix_traits<matrix_t>::value_type epsilon = 0) { typedef matrix_traits<matrix_t> traits_t; typedef typename traits_t::copy_type copy_t; copy_t A; copy_t B; copy_t* C = (epsilon>0) ? (&A) : (&B); // LINE #1 copy_t& D = (epsilon>0) ? (A) : (B); // LINE #2 return 0; } int main(int argc, char* argv[]) { double b[3][4]; FAKE_rank(b); return 0; } Tag: question about retrieving a volume name... Tag: 247691
  - 25
    - Reading Event Log Hello, I need to read the Security Event Log and then show the EVENTLOGRECORD as a String. Reading records works fine but when I format the string that I'm going to show the FormatMessage function generate an "Unhandled exception ... (NTDLL.DLL) ... Access violation". I found a code sample on the net that I've used to format the string but this generate the same problem. I need your help. Now, I posted this code this funtion to format the EVENTLOGRECORD data, any suggestions?. BOOL GetDescription(char *Log, EVENTLOGRECORD *EventLogRecPtr, char *tmpStr) { int i=0,I ,j; unsigned long FileNameModuleSize = 100; char tmp[200]; HKEY nKeyHandle=0; BYTE FileNameModule[100],expbuffer[BUFFER_SIZE]; LPTSTR message, *strings, AllocedStr[20] ; LPVOID lpBuffer; sprintf(tmp,"SYSTEM\\CurrentControlSet\\Services\\EventLog\\%s\\%s", Log, (LPBYTE)EventLogRecPtr + sizeof(EVENTLOGRECORD)); RegOpenKey(HKEY_LOCAL_MACHINE,(LPTSTR) tmp,&nKeyHandle); RegQueryValueEx(nKeyHandle,"EventMessageFile",NULL,NULL, FileNameModule, &FileNameModuleSize); ExpandEnvironmentStrings((LPCTSTR)FileNameModule, (LPSTR)expbuffer, BUFFER_SIZE); RegCloseKey(HKEY_LOCAL_MACHINE); if (nKeyHandle) { message = (LPTSTR)((LPBYTE)EventLogRecPtr + EventLogRecPtr->StringOffset); strings = (char**)malloc(sizeof(LPVOID)*EventLogRecPtr->NumStrings); for (j = 0; j < EventLogRecPtr->NumStrings;j++) { if (strstr(message,"%%")) { (LPTSTR) strings[j] = GetParameterMsg(message, tmp); AllocedStr[i++] = strings[j]; } else (LPTSTR) strings[j] = message; message = message + strlen(message) +1; } HMODULE hlib = LoadLibraryEx((LPCTSTR)expbuffer, NULL, LOAD_LIBRARY_AS_DATAFILE); I=FormatMessage( FORMAT_MESSAGE_FROM_HMODULE | FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_ARGUMENT_ARRAY, hlib, EventLogRecPtr->EventID, 0, (LPTSTR)&lpBuffer, sizeof(lpBuffer), (LPTSTR *)(strings)); if( I == 0) { while (i >0) { free(AllocedStr[--i]); } MissatgesError(); if(lpBuffer == NULL) LocalFree( lpBuffer ); return False; } strcpy(tmpStr, (char *) lpBuffer); for(I = 0; I< (int) strlen(tmpStr);I++) { if((tmpStr[I] != 0) && ((tmpStr[I] > 0 && tmpStr[I] < 32))) tmpStr[I] = 32; } LocalFree( lpBuffer ); FreeLibrary(hlib); return True; } return False; } Tag: question about retrieving a volume name... Tag: 247690
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  - 1
    - apidll.dll required hi, Whenever I run apimon.exe. It gives "could not dll loaded" error. After searching over net people tell that apimon.exe needs apidll.dll. But i could not get. Please help me. where can i get apidll.dll? -- With regards thanks Anand Choubey Tag: question about retrieving a volume name... Tag: 247688
  - 2
    - Event related to a runtime created component. Hello! I am developping a Visual C++ .NET 2003 multiple forms application. My problem is: When running my application, I click a button and a new main menu item is created. Ok. Now I want to relate an event to the click of this new item created. How do I create an event related to a component that is created in runtime? If somebody could help me anyway I thank very much. Tag: question about retrieving a volume name... Tag: 247684
  - 3
    - Constifier Modifies code files in a C++ project to make as many class member methods 'const' as possible. It parses the methods in all the files, tries making them 'const', tests whether the build succeeds and if not reverts to the previous state. The more methods that are const, the faster the C++ program will run, as the compiler can allocate special sections of read-only memory for things it knows are going to be constant - this also leads to better security. The effect is snowballing - the first pass of the program on a project may, say, convert 5% of methods to const methods, but running a second pass may convert some more - as methods that call the methods that have now been made const (but came early on in the sort order) may now be able to be constified because they are now calling const methods. Leave the program running overnight on your project continuously in a loop, and when you wake up in the morning, as many methods as possible will be const! http://www.planetsourcecode.com/vb/scripts/ShowCode.asp?txtCodeId=3644&lngWId=10 Comments? Tag: question about retrieving a volume name... Tag: 247673
  - 4
    - atof Hi all, Is there a generic-text routine mapping for atof, or a unicode equivalent?? Thanks Srishti Tag: question about retrieving a volume name... Tag: 247666
  - 5
    - C++ Interest Hello, My name is Davin Eastley and I'm 13 years old. I live in Tasmania, Australia. I am currently training for the MCAD Certification in C#. I am going through the training guide from QUE Certification on Exam 70-316 (Developing Windows based Applications in C# and Visual Studio .NET). If anyone has some good reference material they would like to share or any information on good books to buy I would appreciate it. I am interested in C# and particularly for developing XML Web Services as I am a beginner in XML. Books on Web Development would also be very good. I would like to learn C++ and if anyone can point me in the right direction for good learning tools for a beginner, I would appreciate that. Are there any C++ exams left in the developer certs? Also, a speedy reply would be appreciated. Regards, Davin Eastley Tag: question about retrieving a volume name... Tag: 247662
  - 6
    - how can i free the excrescent memory hello , i have a question . when my program startup, i find it use much memory (>8M), i minimize the window of my program ,it use less memory( <1M ) , later on , i restore the window ,the memory will increase to 2M . what's the reason ? sometimes ,i create a new window ,the memory will increase ,but it will not decrease , i had destroy the window and had used "delete this " . how can i free the excrescent memory by Windows interface ? not minimize it . thanks a lot . enlone Tag: question about retrieving a volume name... Tag: 247661
  - 7
    - Converting EXE to DLL Hello, I was just wondering if it is possible to convert existing exe project into a dll project. Thank you. Victor. Tag: question about retrieving a volume name... Tag: 247653
  - 8
    - EXCEPTION_PRIV_INSTRUCTION?? I am getting the "privileged instruction" exception. It occurs in a call toWaitForSingleObject (waiting for a thread). How to avoid this exception? thanks Tag: question about retrieving a volume name... Tag: 247652
  - 9
    - OnItemExpanding (Con't) Hello, Thanks to Joe Newcomer I've taken a direction that will hopefully lead to a working FTP application. In fact, I've implemented suggested approach but for some reason(due to my inpexperience with VC++), I can't seem to get a directory to expand. What I do is this: void cedlg1::OnTree(NMHDR* pNMHDR, LRESULT* pResult) { MessageBox("Click"); my_tree->OnItemexpanding(pNMHDR, pResult); } ('my_tree' is a member of my tree class.) This function is in my dialog class which calls tree function OnItemexpanding which theoretically should do what it promises to do. But it does nothing. What I am doing wrong? Thank you. Victor. Tag: question about retrieving a volume name... Tag: 247651
  - 10
    - Books on FTP Hello, Can anybody suggest a book I can read on how to write FTP client in VC++? Thanks, Victor. Tag: question about retrieving a volume name... Tag: 247646
  - 11
    - Toolbar issue Hello I have included a toolbar window in my application, this works all very well apart from the fact that I can't get it to sit anywhere other than the top of its parent window. I want to have some comboboxes above it, and it keeps trying to lie on the top of them. I've tried using TBS_BOTTOM and calls to SetWindowPos (with a positive 'top' parameter) refuse to budge it from the very top of its parent window. Any ideas? Tag: question about retrieving a volume name... Tag: 247642
  - 12
    - How to create toplevel Dialog box Hi Everybody, If anybody know about how to create top level dialog box in MFC, please let me know. Regards, Prakash. Tag: question about retrieving a volume name... Tag: 247640
  - 13
    - How to bring the particular window front. Hi Everybody, I have created the application similar to Turbonote application. In my application i have faced some problems. Please help me to solve this. In my application we can create many notes dialog. Suppose if i created some notes dialog on the screen and now i switch over to new window like notepad or explorer window. Once if i coming back to select particular note dialog, all note dialogs are coming front. I want to bring front for the particular note dialog when we activate that. Please help me ! Regards, Prakash. Tag: question about retrieving a volume name... Tag: 247630
  - 14
    - Meaning of this error message in VC++ Can anyone tell me what this means when compiling a program under VC++? unexpected end of file while looking for precompiled header directive This only occurs when I add a .cpp file to the compile. Thanks, Lilith Tag: question about retrieving a volume name... Tag: 247627
  - 15
    - Invalid floating-point operation on static_cast with /G7 I do not know where to report a bug in VC7.1 code generator. Link given in http://www.codeproject.com/scrapbook/semicolon_1.asp does not work. The bug report is: Code generated with /G7 option for static_cast<unsigned>(float) raises "invalid floating point operation" exception. /G5 and /G6 work fine (through _ftol2). Code sample: #include <stdio.h> #include <limits> //this variable is outside of main() to disable compile-time arithmetic optimization //static or volatile variable inside of main() work too unsigned u1 = static_cast<unsigned>(std::numeric_limits<int>::max()) + 1u; //this number represented precisely in 32-bit IEEE float // volatile to enforce conversion to 32-bit float // volatile is not necessary for bug reproduction volatile float f1; volatile unsigned u2; int main() { // enable "invalid floating point operation" exception _control87 (0, _EM_INVALID); // works fine and retains correct value f1 = u1; printf("1)u1=%u\n2)f1=%f\n", u1, f1); //this conversion causes "invalid floating point operation" with /G7 u2 = static_cast<unsigned>(f1); //shows correct result with /G5 and /G6 printf("3)u2=%u\n", u2); return 0; } Asm with /G7 //this conversion causes "invalid floating point operation" with /G7 u2 = static_cast<unsigned>(f1); 0040103B fld dword ptr [f1 (40A9C4h)] 00401041 fnstcw word ptr [esp+12h] 00401045 movzx eax,word ptr [esp+12h] 0040104A or ah,0Ch 0040104D mov dword ptr [esp+14h],eax 00401051 fldcw word ptr [esp+14h] 00401055 fistp dword ptr [esp+14h] 00401059 mov eax,dword ptr [esp+14h] 0040105D mov dword ptr [u2 (40A9C0h)],eax //shows correct result in /G5 and /G6 printf("3)u2=%u\n", u2); 00401062 mov ecx,dword ptr [u2 (40A9C0h)] 00401068 fldcw word ptr [esp+12h] Asm with /G6 //this conversion causes "invalid floating point operation" with /G7 u2 = static_cast<unsigned>(f1); 00401039 fld dword ptr [f1 (40A9C4h)] 0040103F call _ftol2 (401250h) 00401044 mov dword ptr [u2 (40A9C0h)],eax //shows correct result in /G5 and /G6 printf("3)u2=%u\n", u2); 00401049 mov eax,dword ptr [u2 (40A9C0h)] 0040104E push eax 0040104F push offset string "3)u2=%u\n" (4080FCh) 00401054 call printf (40105Fh) return 0; 00401059 xor eax,eax } 0040105B add esp,1Ch 0040105E ret Result with /G6: 1)u1=2147483648 2)f1=2147483648.000000 3)u2=2147483648 Result with /G7: 1)u1=2147483648 2)f1=2147483648.000000 and shows (0xc0000090) window. Tag: question about retrieving a volume name... Tag: 247624
  - 16
    - thiscall I notice that member functions of classes use the calling convention 'thiscall', not stdcall or __cdecl. What I wouldn't mind knowing is can you pass a function pointer of type thiscall, assuming you call it correctly with the correct pointer for 'this' as the first value? Tag: question about retrieving a volume name... Tag: 247621
  - 17
    - How to make sure a Service starts BEFORE a user logs on? Hi: I have a regular Windows Service program (not a kernel driver) which must start BEFORE a user logs into his machine (XP or W2K). It works most of the time, but sometimes, I noticed that it started AFTER I log on the machine; especially if I logged in the machine fast right after a reboot. Is there a way in the service program, I can do something to make sure that, after reboot, the service starts before a user logs in the machine (no matter how fast the user is trying to complete his logon process)? Thanks In Advance ! Polaris Tag: question about retrieving a volume name... Tag: 247611
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    - A matter of style Amidst the tangle of information I'm accumulating as I try to learn how to use VC++ there are certain things I'm uncertain of, not only as a matter of how things are done within the compiler but also how I sould be doing things. So I put out these questions. If I had my own class that I want to define in my own .cpp file, how does the project incorporate this into the final result? That is, is my file compiled separately as an object file and then linked by default to my main program? In regards to style, if I have a function that I need to write to help process some repetitive code in event handlers, should I be defining my function within the same source file as the event handler's source? Or should I be including it in a separate file? Thanks in advance. -- Lilith Tag: question about retrieving a volume name... Tag: 247609
  - 19
    - 64 bit porting issue Hi All, The following code compiles for 32 bit BOOL WINAPI WlxGetConsoleSwitchCredentials( PVOID pWlxContext, PVOID pCredInfo ) { BOOL bSuccess; bSuccess = WlxGetConsoleSwitchCredentials ? WlxGetConsoleSwitchCredentials(pWlxContext, pCredInfo) : FALSE; // error is occuring at this line return (bSuccess); } but when i compile it with 64 bit MSSDK i am getting the following error:- C-style cast or function-style cast file.cpp(814) : error C4551: function call missing argument list NMAKE : fatal error U1077: 'cl' : return code '0x2' Stop. NMAKE : fatal error U1077: 'for' : return code '0x2' Stop. Any help in this regard would be of great help. Thanks in advance Regards, Albert Tag: question about retrieving a volume name... Tag: 247597
  - 20
    - Question about IDiskQuotaControl Can anyone offer a reason why this piece of code: HRESULT hResult; IDiskQuotaControl *pIDiskQuotaControl = NULL; hResult = CoCreateInstance(CLSID_DiskQuotaControl, NULL, CLSCTX_INPROC_SERVER, IID_IDiskQuotaControl, (void **) &pIDiskQuotaControl); if (S_OK == hResult) { pIDiskQuotaControl->Release(); } generates these two linker errors: DiskQuotaTestDlg.obj : error LNK2001: unresolved external symbol _CLSID_DiskQuotaControl DiskQuotaTestDlg.obj : error LNK2001: unresolved external symbol _IID_IDiskQuotaControl I've also tried using the following statement to no avail: #import <DskQuota.dll> If I replace those lines with something like: IHTMLDocument2 *pIHTMLDocument2 = NULL; hResult = CoCreateInstance(CLSID_HTMLDocument, NULL, CLSCTX_INPROC_SERVER, IID_IHTMLDocument2, (void **) &pIHTMLDocument2); it compiles and links fine. Thank you, David Crow Tag: question about retrieving a volume name... Tag: 247593
  - 21
    - How to access a function in a User Control Hi All, I have created a MFC ActiveX OCX, using VC++ 7.0, which contains a dialog. I have embeded another user created control (this was created with VB6). This VB6 control exposes 2 functions. I would like some help on how to call these functions from my MFC OCX (say on a button click event). Thanks in advance ... Hussain Shabbir Tag: question about retrieving a volume name... Tag: 247592
  - 22
    - Problem with ShellExecuteEx!!! hi! i have an application in which i have using ShellExecuteEx to Print from a Word document file. Now the problem is that it is working fine on my machine. but when this application is run on the Client's machine having the Same OS XP Pro. same SP2 and Word2003, It just launches the Word application and don't open the specified document to send print stream. I am surprised to see this behavior, furhtermore i have also used ShellExecute to check it out. but same response. Both functions return a value greater then 32 (means success). Any body there to tell me the reason. Any Alternate? Thanks in advance. Ahmad Jalil Qarshi Tag: question about retrieving a volume name... Tag: 247590
  - 23
    - Change project type EXE->LIB in VC++ 6.0 How does one change the project type from Exe to lib in VC++ 6.0? Thanks, Quantdev Tag: question about retrieving a volume name... Tag: 247589
  - 24
    - Hooking on Query.dll Hi Folks, I am trying to hook query.dll for text filter(default filter). I have done hooking on query.dll's Import table , my application and all other dlls which are needed e.g. msvcrt.dll. Still I am not able to get any CreateFile API call. I want to know that how query.dll works with text file filtering. I have hooked successfully on offfilt.dll/zfilter.dll. Please help me. It is so important for me. -- With regards thanks Anand Choubey Tag: question about retrieving a volume name... Tag: 247586
  - 25
    - Effecient C++ Reader Writer Lock I am looking for efficient C++ on NT implementations for multiple reader single writer locks. I have existing implementations, but I would still like pointers to other implementations, especially implementations that also support: - reader preference, - writer preference, - equal and ordered preference, - and reader to writer and writer to reader promotion and demotion. The ideal implementation would be equivalent in functionality to the .NET ReaderWriterLock class, but C++ and WIN32/WIN64 API, or maybe even the NT Kernel executive resource locks. For references to some existing implementations see: http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpref/html/frlrfsystemthreadingreaderwriterlockclasstopic.asp http://www.amazon.com/exec/obidos/tg/detail/-/1572315482/103-8988588-8523003?v=glance http://www.windevnet.com/wdm/articles/1999/9901/ Regards Pieter Tag: question about retrieving a volume name... Tag: 247575

i am trying to determine the volume name for each partition on a physical
disk resource in a mscs environment.

i have already established the ability to enumerate all of the storage
resources and get a CLUSPROP_PARTITION_INFO structure for each.

when i retrieve the szdevicename property of the structure i get a drive
letter for all volumes mounted to a drive letter. i can uset
findvolumenameformounpoint by simply appending a \ to the string to get the
volume name.

however volumes that are mounted to a folder or not at all return a string
similar to Disk1Partition4 for their szdevicename. are there any functions or
proceedures i can use to retrieve the volume name only knowing the above
mentioned string?

my searching has turned up nothing. thanks for your help!!!

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