I know you all must hate me but another ?

This is a discussion on I know you all must hate me but another ? within the Windows Programming forums, part of the Platform Specific Boards category; I'm trying to load a BMP image in. At first I was trying to load an external file but after ...

  1. #1
    & the hat of GPL slaying Thantos's Avatar
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    I know you all must hate me but another ? - Loading a BMP

    I'm trying to load a BMP image in. At first I was trying to load an external file but after repeated failures I switched to trying to load a predefined bitmap. All attempts with the predefined return with error 1814 (ERROR_RESOURCE_NAME_NOT_FOUND) when trying to load. When doing my own I get error 1812 (ERROR_RESOURCE_DATA_NOT_FOUND). File I'm trying to load:
    http://www.mikemill.org/images/directions.bmp

    Code:
    LRESULT CALLBACK WndProcMap (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
    {
        static HBITMAP hBmp;
        int c1,c2, tmp;
        static int x, y;
        HINSTANCE hInstance;
        TCHAR szBuffer[100];
    
        switch (message)
            {
            case WM_CREATE:
                    if ( SetCurrentDirectory("c:\\game\\wingame\\pic") == 0)
                          {tmp = GetLastError();MessageBoxPrintf( TEXT ("Error"),TEXT ("Set Directory Error Number: %i"), tmp);}
                    
                    hInstance = (HINSTANCE) GetWindowLong (hwnd, GWL_HINSTANCE);
                    
                    if ( (tmp=SearchPath (NULL, TEXT("directions"), TEXT(".bmp"), 100, szBuffer, NULL)) == 0)
                       {tmp = GetLastError();MessageBoxPrintf( TEXT ("Error"),TEXT ("Find File Error Number: %i"), tmp);}
                    MessageBoxPrintf( TEXT ("String"),TEXT ("String %d: %s"), tmp, szBuffer);
                    if ( (hBmp = LoadBitmap(hInstance, szBuffer)) ==NULL)
                         {tmp = GetLastError();MessageBoxPrintf( TEXT ("Error"),TEXT ("Load BMP Error Number: %i"), tmp);}
                    
                    return 0;
                    
            case WM_PAINT:
                    {
                    PAINTSTRUCT ps;
                    HDC hdc = BeginPaint (hwnd, &ps);
                    HDC hdcMem = CreateCompatibleDC (hdc);                
                    SelectObject(hdcMem, hBmp);
                    if (BitBlt (hdc, 100, 100, 30, 30, hdcMem, 0, 0, SRCCOPY) == 0)
                        {tmp = GetLastError();MessageBoxPrintf( TEXT ("Error"),TEXT ("Button Error Number: %i"), tmp);}
    
                    EndPaint (hwnd, &ps);              
                    DeleteObject(hdcMem);
                    }
                    return 0;
                    
            case WM_DESTROY:
                    PostQuitMessage (0);
                    return 0;
            
            case WM_SIZE:
                    x = LOWORD (lParam);
                    y = HIWORD (lParam);
                    return 0;
            
            }
        return DefWindowProc (hwnd, message, wParam, lParam);
    }
    As a side note: I have tried to use LoadImage() but when I try to do something like hBmp = LoadImage (......); I get an error when compiling saying "ANSI C++ forbids implicit conversion from `void *' in assignment"
    Last edited by Thantos; 08-15-2003 at 07:53 AM.

  2. #2
    train spotter
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    try

    hBmp =(HBITMAP) LoadImage (......);

    hBmp= (HBITMAP)LoadBitmap(hInst,MAKEINTRESOURCE (ID_MYBITMAP));

    Ensure that you have added the bitmap to the exe thru the resource editor and given it an ID. That is it must be contained in the exe not as an external file.

    Code:
    sprintf(sImage,".\\Images\\LoadThis.bmp");
    hImage=(HBITMAP) LoadImage( hInstance, sImage, IMAGE_BITMAP, 0, 0, LR_LOADFROMFILE);
    PS
    SelectObject(hdcMem, hBmp);
    should be
    HBITMAP hOld=NULL;
    hOld= SelectObject(hdcMem,hBmp);
    //yada yada
    SelectObject(hdcMem,hOld);//put the old GDI object back then the DC will delete correctly
    DeleteDC(hdcMem);
    Last edited by novacain; 08-15-2003 at 01:43 AM.
    "Man alone suffers so excruciatingly in the world that he was compelled to invent laughter."
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  3. #3
    End Of Line Hammer's Avatar
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    >>I know you all must hate me but another ?<<
    I only hate it when people use stupid thread titles that aren't relevant to the actual subject
    http://cboard.cprogramming.com/annou...p?s=&forumid=7
    When all else fails, read the instructions.
    If you're posting code, use code tags: [code] /* insert code here */ [/code]

  4. #4
    & the hat of GPL slaying Thantos's Avatar
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    Yea sorry about that Hammer. Edited title to make it clearer. Was on my last legs when posted last night.

    Ok I think 99% of the problem is that I'm not using a Resource file. Tried looking all over my compilier (Dev C++ ver 4.9.8.1) and it doesn't seem to have anything for making them. Is there a third party software that is good for making RC files?

    Edit: Ok just noticed that editing the first post's title doesn't change the thread's title
    Last edited by Thantos; 08-15-2003 at 08:19 AM.

  5. #5
    Registered User
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    81
    you could just use a text editor to make the resource file.

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