Need some more assistance

This is a discussion on Need some more assistance within the Windows Programming forums, part of the Platform Specific Boards category; Ok got trying to create 4 windows (this is for testing more then anything). Two windows are showing up just ...

  1. #1
    & the hat of GPL slaying Thantos's Avatar
    Join Date
    Sep 2001
    Posts
    5,681

    Need some more assistance

    Ok got trying to create 4 windows (this is for testing more then anything). Two windows are showing up just fine but the other two aren't drawing a frame or background. Code and a screenshot attached.
    Code is attached at the bottom
    http://www.mikemill.org/images/error.JPG

    Code:
    #include <windows.h>
    #include <tchar.h>
    #include <stdio.h>
    #include <winuser.h>
    #include <mike.h>
    
    LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM);
    LRESULT CALLBACK WndProc2 (HWND, UINT, WPARAM, LPARAM);
    LRESULT CALLBACK WndProc3 (HWND, UINT, WPARAM, LPARAM);
    LRESULT CALLBACK WndProc4 (HWND, UINT, WPARAM, LPARAM);
    
    
    int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
                        PSTR szCmdLine, int iCmdShow)
                        
    {
        static TCHAR szAppName[] = TEXT ("Main Window");
        static TCHAR szAppName2[] = TEXT ("Battle");
        static TCHAR szAppName3[] = TEXT ("City");
        static TCHAR szAppName4[] = TEXT ("Map");
    
        int tmp;
    
        HWND        hMainWin, hBattleWin, hCityWin, hMapWin;
        WNDCLASS    wndclass, wndclass2, wndclass3, wndclass4;
        MSG         msg;
        
        
        wndclass.style        = CS_HREDRAW | CS_VREDRAW;
        wndclass.lpfnWndProc  = WndProc;
        wndclass.cbClsExtra   = 0;
        wndclass.cbWndExtra   = 0;
        wndclass.hInstance    = hInstance;
        wndclass.hIcon        = LoadIcon (NULL, IDC_ARROW);
        wndclass.hbrBackground = (HBRUSH)(COLOR_WINDOW+1); 
        wndclass.lpszMenuName = NULL;
        wndclass.lpszClassName = szAppName;
        wndclass.hCursor=LoadCursor(NULL,IDC_ARROW);
        
        wndclass2.style        = CS_HREDRAW | CS_VREDRAW;
        wndclass2.lpfnWndProc  = WndProc2;
        wndclass2.cbClsExtra   = 0;
        wndclass2.cbWndExtra   = 0;
        wndclass2.hInstance    = hInstance;
        wndclass2.hIcon        = LoadIcon (NULL, IDC_ARROW);
        wndclass2.hbrBackground = (HBRUSH)(COLOR_WINDOW+1); 
        wndclass2.lpszMenuName = NULL;
        wndclass2.lpszClassName = szAppName2;
        wndclass2.hCursor=LoadCursor(NULL,IDC_ARROW);
        
        wndclass3.style        = CS_HREDRAW | CS_VREDRAW;
        wndclass3.lpfnWndProc  = WndProc3;
        wndclass3.cbClsExtra   = 0;
        wndclass3.cbWndExtra   = 0;
        wndclass3.hInstance    = hInstance;
        wndclass3.hIcon        = LoadIcon (NULL, IDC_ARROW);
        wndclass3.hbrBackground = (HBRUSH)(COLOR_WINDOW+1); 
        wndclass3.lpszMenuName = NULL;
        wndclass3.lpszClassName = szAppName3;
        wndclass3.hCursor=LoadCursor(NULL,IDC_ARROW);
        
        wndclass4.style        = CS_HREDRAW | CS_VREDRAW;
        wndclass4.lpfnWndProc  = WndProc4;
        wndclass4.cbClsExtra   = 0;
        wndclass4.cbWndExtra   = 0;
        wndclass4.hInstance    = hInstance;
        wndclass4.hIcon        = LoadIcon (NULL, IDC_ARROW);
        wndclass4.hbrBackground = (HBRUSH)(COLOR_WINDOW+1); 
        wndclass4.lpszMenuName = NULL;
        wndclass4.lpszClassName = szAppName4;
        wndclass4.hCursor=LoadCursor(NULL,IDC_ARROW);
        
        
        if ( !RegisterClass (&wndclass))
            {tmp = GetLastError();MessageBoxPrintf( TEXT ("Error"),TEXT ("#1 Error Number: %i"), tmp); 
            return 0;}
        
        if ( !RegisterClass (&wndclass2))
            {tmp = GetLastError();MessageBoxPrintf( TEXT ("Error"),TEXT ("#2 Error Number: %i"), tmp); 
            return 0;}
        
        if ( !RegisterClass (&wndclass3))
            {tmp = GetLastError();MessageBoxPrintf( TEXT ("Error"),TEXT ("#3 Error Number: %i"), tmp); 
            return 0;}
        
        if ( !RegisterClass (&wndclass4))
            {tmp = GetLastError();MessageBoxPrintf( TEXT ("Error"),TEXT ("#4 Error Number: %i"), tmp); 
            return 0;}
        
    
    
        hMainWin = CreateWindow (szAppName,
                             TEXT ("Main Window"),
                             WS_OVERLAPPEDWINDOW,
                             0,
                             0,
                             200,
                             200,
                             NULL,
                             NULL,
                             hInstance,
                             NULL);
        
        hBattleWin = CreateWindowEx (WS_EX_TOOLWINDOW,
                              szAppName2,
                              TEXT("Battle Window"),
                              WS_OVERLAPPED,
                              200,
                              0,
                              200,
                              200,
                              NULL,
                              NULL,
                              hInstance,
                              NULL);
    
        hCityWin = CreateWindowEx (WS_EX_TOOLWINDOW,
                              szAppName3,
                              TEXT("City Window"),
                              WS_OVERLAPPED | WS_VISIBLE | WS_THICKFRAME,
                              0,
                              200,
                              200,
                              200,
                              NULL,
                              NULL,
                              hInstance,
                              NULL);
    
        hMapWin = CreateWindowEx (WS_EX_TOOLWINDOW,
                              szAppName4,
                              TEXT("Map Window"),
                              WS_OVERLAPPEDWINDOW,
                              200,
                              200,
                              200,
                              200,
                              NULL,
                              NULL,
                              hInstance,
                              NULL);
    
    
        ShowWindow (hMainWin, iCmdShow);                     
        UpdateWindow (hMainWin);
        
        ShowWindow (hBattleWin, iCmdShow);                     
        UpdateWindow (hBattleWin);
        
        ShowWindow (hCityWin, iCmdShow);                     
        UpdateWindow (hCityWin);
        
        ShowWindow (hMapWin, iCmdShow);                     
        UpdateWindow (hMapWin);
        
        while (GetMessage (&msg, NULL, 0, 0))
            {
            TranslateMessage (&msg);
            DispatchMessage (&msg);
            }
    }
    
    LRESULT CALLBACK WndProc (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
    {
        HDC             hdc;
        PAINTSTRUCT     ps;
        RECT            rect;
        TCHAR           szBuffer[100];
        
        GetCurrentDirectory(100,szBuffer);
        
        switch (message)
            {
            case WM_CREATE:
                    return 0;
                    
            case WM_PAINT:
                    hdc = BeginPaint (hwnd, &ps);
                    GetClientRect (hwnd, &rect);
                    DrawText ( hdc, szBuffer, -1, &rect,
                               DT_SINGLELINE | DT_CENTER);
                    
                    EndPaint (hwnd, &ps);              
                    
                    return 0;
                    
            case WM_DESTROY:
                    PostQuitMessage (0);
                    return 0;
            
            }
        return DefWindowProc (hwnd, message, wParam, lParam);
    }
    
    LRESULT CALLBACK WndProc2 (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
    {
        HDC             hdc;
        PAINTSTRUCT     ps;
        RECT            rect;
        TCHAR           szBuffer[100];
        
        switch (message)
            {
            case WM_CREATE:
                    return 0;
                    
            case WM_PAINT:
                    hdc = BeginPaint (hwnd, &ps);
                    GetClientRect (hwnd, &rect);
                    DrawText ( hdc, TEXT("#2"), -1, &rect,
                               DT_SINGLELINE | DT_CENTER);
                    
                    EndPaint (hwnd, &ps);              
                    
                    return 0;
                    
            case WM_DESTROY:
                    PostQuitMessage (0);
                    return 0;
            
            }
        return DefWindowProc (hwnd, message, wParam, lParam);
    }
    
    
    LRESULT CALLBACK WndProc3 (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
    {
        HDC             hdc;
        PAINTSTRUCT     ps;
        RECT            rect;
        TCHAR           szBuffer[100];
    
        switch (message)
            {
            case WM_CREATE:
                    return 0;
                    
            case WM_PAINT:
                    hdc = BeginPaint (hwnd, &ps);
                    GetClientRect (hwnd, &rect);
                    DrawText ( hdc, TEXT("#3"), -1, &rect,
                               DT_SINGLELINE | DT_CENTER);
                    
                    EndPaint (hwnd, &ps);              
                    
                    return 0;
                    
            case WM_DESTROY:
                    PostQuitMessage (0);
                    return 0;
            
            }
    }
    
    LRESULT CALLBACK WndProc4 (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
    {
        HDC             hdc;
        PAINTSTRUCT     ps;
        RECT            rect;
        TCHAR           szBuffer[100];
        switch (message)
            {
            case WM_CREATE:
                    return 0;
                    
            case WM_PAINT:
                    hdc = BeginPaint (hwnd, &ps);
                    GetClientRect (hwnd, &rect);
                    DrawText ( hdc, TEXT("#4"), -1, &rect,
                               DT_SINGLELINE | DT_CENTER);
                    
                    EndPaint (hwnd, &ps);              
                    
                    return 0;
                    
            case WM_DESTROY:
                    PostQuitMessage (0);
                    return 0;
            
            }
    }
    Attached Files Attached Files

  2. #2
    It's full of stars adrianxw's Avatar
    Join Date
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    Posts
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    I can't compile it, I don't have mike.h. When posting this kind of request, it is a good idea to zip everything needed to enable someone to compile it, 2 minutes in the debugger reveals far more than an hour reading the code.
    Wave upon wave of demented avengers march cheerfully out of obscurity unto the dream.

  3. #3
    & the hat of GPL slaying Thantos's Avatar
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    Damn forgot about that. To compile without mike.h remove:
    tmp = GetLastError();MessageBoxPrintf( TEXT ("Error"),TEXT ("#1 Error Number: %i"), tmp);

    Also never have figured out how to run the debugger to be honest.
    Attached Files Attached Files
    • File Type: h mike.h (684 Bytes, 100 views)

  4. #4
    erstwhile
    Join Date
    Jan 2002
    Posts
    2,227
    Looks like you've forgotten to call DefWindowproc in your 3rd and 4th window procedures.
    CProgramming FAQ
    Caution: this person may be a carrier of the misinformation virus.

  5. #5
    & the hat of GPL slaying Thantos's Avatar
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    Thanks. God I feel like an idiot

  6. #6
    It's full of stars adrianxw's Avatar
    Join Date
    Aug 2001
    Posts
    4,831
    Okay, I've got it compiled, but now my wife is telling me to leave the damn machine alone and eat my dinner, so I'll have a look later.

    *** EDIT ***

    Okay, so I won't!
    Wave upon wave of demented avengers march cheerfully out of obscurity unto the dream.

  7. #7
    Skunkmeister Stoned_Coder's Avatar
    Join Date
    Aug 2001
    Posts
    2,572
    Under the thumb adrian? lol
    Free the weed!! Class B to class C is not good enough!!
    And the FAQ is here :- http://faq.cprogramming.com/cgi-bin/smartfaq.cgi

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