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Practically the same code, but one is producing an error...

Donald Beals Sr. · 2005-12-05T18:02:36

I made a Window class to help with making simple demos and I'm running into an error. Here is my class: class Window { HWND m_WndHandle; WNDCLASS m_WndClass; public: Window() { char szFileName[MAX_PATH]; char szDrive[8], szDirectory[MAX_PATH]; WIN32_FIND_DATA FindData; ZeroMemory(&m_WndClass, sizeof(WNDCLASS)); ZeroMemory(&FindData, sizeof(WIN32_FIND_DATA)); GetModuleFileName(0, szFileName, MAX_PATH); _splitpath(szFileName, szDrive, szDirectory, 0, 0); _makepath(szFileName, szDrive, szDirectory, 0, 0); if(FindFirstFile(std::string(std::string(szFileName) + std::string("*.ico")).c_str(), &FindData) == INVALID_HANDLE_VALUE) m_WndClass.hIcon = LoadIcon(0, IDI_APPLICATION); else m_WndClass.hIcon = (HICON)LoadImage(0, FindData.cFileName, IMAGE_ICON, 0, 0, LR_LOADFROMFILE | LR_SHARED | LR_LOADTRANSPARENT); if(FindFirstFile(std::string(std::string(szFileName) + std::string("*.cur")).c_str(), &FindData) == INVALID_HANDLE_VALUE) m_WndClass.hCursor = LoadCursor(0, IDC_ARROW); else m_WndClass.hCursor = (HCURSOR)LoadImage(0, FindData.cFileName, IMAGE_CURSOR, 0, 0, LR_LOADFROMFILE | LR_SHARED | LR_LOADTRANSPARENT); FindFirstFile(std::string(std::string(szFileName) + std::string("*.exe")).c_str(), &FindData); m_WndClass.lpszClassName = FindData.cFileName; m_WndClass.hbrBackground = GetSysColorBrush(COLOR_BTNFACE); m_WndClass.hInstance = GetModuleHandle(0); m_WndClass.lpfnWndProc = DefWindowProc; } void Create() { assert(RegisterClass(&m_WndClass) != 0); assert((m_WndHandle = CreateWindow(m_WndClass.lpszClassName, m_WndClass.lpszClassName, WS_POPUP | WS_VISIBLE, 0, 0, 800, 600, 0, 0, m_WndClass.hInstance, 0)) != 0); } void Start(void (*Idle)()) { if(!m_WndHandle) Create(); MSG Msg; ZeroMemory(&Msg, sizeof(MSG)); while(1) { if(PeekMessage(&Msg, 0, 0, 0, PM_REMOVE)) { if(Msg.message == WM_QUIT) break; TranslateMessage(&Msg); DispatchMessage(&Msg); } else { Idle(); } } } void OverrideIcon(HICON hIcon) { if(!m_WndHandle) m_WndClass.hIcon = hIcon; } void OverrideCursor(HCURSOR hCursor) { if(!m_WndHandle) m_WndClass.hCursor = hCursor; } void OverrideWndProc(WNDPROC WndProc) { if(!m_WndHandle) m_WndClass.lpfnWndProc = WndProc; else SetWindowLong(m_WndHandle, GWL_WNDPROC, (long)WndProc); } void OverrideClassName(const char* pClassName) { if(!m_WndHandle) m_WndClass.lpszClassName = pClassName; } HWND GetHandle() const { return m_WndHandle; } WNDCLASS GetWndClass() const { return m_WndClass; } }; And this is my code that is using it: g_Wnd.OverrideWndProc(InputProc); g_Wnd.Start(IdleProc); This works perfectly everytime. But, if I add g_Wnd.Create() before g_Wnd.Start() and after g_Wnd.OverrideWndProc(), it fails to register the class (on the very first line of g_Wnd.Create()). Am I missing something, or is this not exactly what g_WndStart would do? Anybody have any ideas?

General and Gameplay Programming Programming

Started by Programmer16 December 05, 2005 01:06 PM

9 comments, last by Programmer16 18 years, 4 months ago

Programmer16

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December 05, 2005 06:02 PM

Have you sorted out the linker error? I recall having had (<--grammar?) this one a long time ago, but I have no idea what would be causing it.

Are you building with or without exceptions?
Have you fiddled with your include/lib/src paths recently?

Thats good grammar (as far as I know) :)

I'm still working through it, but I haven't changed the paths lately (other than adding DirectX paths). This problem only happens when I change to release version. I'm pretty sure that I'm building with exceptions (default Microsoft Visual Studio .NET 2003.)

I should have it figured out by tomorrow, if not, I'll think of something to do then.

Thanks for all the help guys!

Practically the same code, but one is producing an error...

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