Simple win32 window class

This is a discussion on Simple win32 window class within the Windows Programming forums, part of the Platform Specific Boards category; There is no compilation errors. Though, the program is unable to create window after registering it. Any suggestions? Code: #include ...

  1. #1
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    Simple win32 window class

    There is no compilation errors. Though, the program is unable to create window after registering it. Any suggestions?

    Code:
    #include <windows.h>
    #include <string>
    using namespace std;
    
    #define DisplayError(text, caption) MessageBox(NULL, text,caption, MB_ICONEXCLAMATION | MB_OK)
    
    class Wnd
    {
        WNDPROC WinControls;
        WNDCLASSEX wc;
        HWND hwnd;
        MSG Msg;
        string  WindowName;
        bool child;
    
        public:
    
    		Wnd() { }
    
       void start(char * Tile , WNDPROC  Procedure  )
        {
            WindowName =  Tile;
    
        }
    
        bool WndPrepare( HINSTANCE hInstance, int menuID, bool Menubuild = false )
        {
            WNDCLASSEX wcex;
    
            wcex.cbSize = sizeof(WNDCLASSEX);
            wcex.style          = CS_NOCLOSE | CS_DBLCLKS;
            wcex.lpfnWndProc    = WinControls;
            wcex.cbClsExtra     = 0;
            wcex.cbWndExtra     = 0;
            wcex.hInstance      = hInstance;
            wcex.hIcon          = LoadIcon(NULL, IDI_APPLICATION);
            wcex.hCursor        = LoadCursor(NULL, IDC_ARROW);
            wcex.hbrBackground  = (HBRUSH)(COLOR_WINDOW+1);
            if( Menubuild)
            wcex.lpszMenuName   = MAKEINTRESOURCE(menuID);
            else
            wcex.lpszMenuName   = NULL;
            wcex.lpszClassName  = (LPCWSTR)WindowName.c_str();
            wcex.hIconSm        = LoadIcon(wcex.hInstance, MAKEINTRESOURCE(IDI_APPLICATION));
    
            if(!RegisterClassEx(&wcex))
            {
                DisplayError( L"HUGE ERROR MAN WINDOW CAN'T REGISTER)", L"ALERT" );
                return false;
            }
                return true;
        }
    
        void WndBuild( HINSTANCE * hInstance, int nCmdShow)
        {
            hwnd = CreateWindowEx(WS_EX_CLIENTEDGE, L"NarraDream",(LPCWSTR)WindowName.c_str(), WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, 240, 120, NULL, NULL, *hInstance, NULL);
            if(!hwnd)
            {
                DisplayError(L"Could not create Window",L"ALERT");
            }
    
            ShowWindow(hwnd, nCmdShow);
            UpdateWindow(hwnd);
        }
    
        int Run(void)
        {
            while (GetMessage(&Msg, NULL, 0, 0) > 0)
            {
            TranslateMessage(&Msg);
            DispatchMessage(&Msg);
            }
    
            return (int)  Msg.wParam;
        }
    };
    
    
    LRESULT CALLBACK WinProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
    {
        switch(msg)
        {
    
            case WM_CLOSE:
                DestroyWindow(hwnd);
            break;
            case WM_DESTROY:
                PostQuitMessage(0);
            break;
            default:
                return DefWindowProc(hwnd, msg, wParam, lParam);
        }
    
        return 0;
    }
    
    int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,LPSTR lpCmdLine, int nCmdShow)
    {
     Wnd wnd;
    	 
      wnd.start("hey", WinProc);
    
     wnd.WndPrepare(0, false);
    
     wnd.WndBuild(&hInstance,nCmdShow);
      return ( wnd.Run() );
    
    }

  2. #2
    Registered User Codeplug's Avatar
    Join Date
    Mar 2003
    Posts
    4,669
    >> (LPCWSTR)WindowName.c_str()
    Square pegs do not fit in round holes.

    LPCTSTR operations/ convertion

    You should understand what TCHAR's are, and how "UNICODE" and "_UNICODE" affect Win32 builds. But don't use tchars. Just make all your strings wide:
    > wstring WindowName;
    > void start(const wchar_t *Title

    gg

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