载入位图资源，使用源程序自带位图可以，自己制作的位图却老是出错。解决思路

#include <windows.h>

LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM) ;

int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
                    PSTR szCmdLine, int iCmdShow)
{
    static TCHAR szAppName [] = TEXT ("Bricks1") ;
    HWND         hwnd ;
    MSG          msg ;
    WNDCLASS     wndclass ;
    
    wndclass.style         = CS_HREDRAW | CS_VREDRAW ;
    wndclass.lpfnWndProc   = WndProc ;
    wndclass.cbClsExtra    = 0 ;
    wndclass.cbWndExtra    = 0 ;
    wndclass.hInstance     = hInstance ;
    wndclass.hIcon         = LoadIcon (NULL, IDI_APPLICATION) ;
    wndclass.hCursor       = LoadCursor (NULL, IDC_ARROW) ;
    wndclass.hbrBackground = (HBRUSH) GetStockObject (WHITE_BRUSH) ;
    wndclass.lpszMenuName  = NULL ;
    wndclass.lpszClassName = szAppName ;
    
    if (!RegisterClass (&wndclass))
    {
        MessageBox (NULL, TEXT ("This program requires Windows NT!"),
            szAppName, MB_ICONERROR) ;
        return 0 ;
    }
    
    hwnd = CreateWindow (szAppName, TEXT ("LoadBitmap Demo"), 
        WS_OVERLAPPEDWINDOW, 
        CW_USEDEFAULT, CW_USEDEFAULT,
        CW_USEDEFAULT, CW_USEDEFAULT,
        NULL, NULL, hInstance, NULL) ;
    
    ShowWindow (hwnd, iCmdShow) ;
    UpdateWindow (hwnd) ;
    
    while (GetMessage (&msg, NULL, 0, 0))
    {
        TranslateMessage (&msg) ;
        DispatchMessage (&msg) ;
    }
    return msg.wParam ;
}

LRESULT CALLBACK WndProc (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    static HBITMAP hBitmap ;
    static int     cxClient, cyClient, cxSource, cySource ;
    BITMAP         bitmap ;
    HDC            hdc, hdcMem ;
    HINSTANCE      hInstance ;
    int            x, y ;
    PAINTSTRUCT    ps ;
    
    switch (message)
    {
    case WM_CREATE:
        hInstance = ((LPCREATESTRUCT) lParam)->hInstance ;
        
        hBitmap = LoadBitmap (hInstance, TEXT ("Bricks")) /*Bricks是一个8*8的单色位图，我也做了一个同样大小的单色位图，换掉Bricks却无法显示。单步查看bitmap各参数都是乱的。不知道什么原因，请各位指点一下。使用源程序自带Bricks位图可以显示使用。 */

        GetObject (hBitmap, sizeof (BITMAP), &bitmap) ;
        
        cxSource = bitmap.bmWidth ;
        cySource = bitmap.bmHeight ;
        
        return 0 ;
        
    case WM_SIZE:
        cxClient = LOWORD (lParam) ;
        cyClient = HIWORD (lParam) ;
        return 0 ;
        
    case WM_PAINT:
        hdc = BeginPaint (hwnd, &ps) ;
        
        hdcMem = CreateCompatibleDC (hdc) ;
        SelectObject (hdcMem, hBitmap) ;
        
        for (y = 0 ; y < cyClient ; y += cySource)
            for (x = 0 ; x < cxClient ; x += cxSource)
            {
                BitBlt (hdc, x, y, cxSource, cySource, hdcMem, 0, 0, SRCCOPY) ;
            }
            
            DeleteDC (hdcMem) ;
            EndPaint (hwnd, &ps) ;
            return 0 ;
            
    case WM_DESTROY:
        DeleteObject (hBitmap) ;
        PostQuitMessage (0) ;
        return 0 ;
    }
    return DefWindowProc (hwnd, message, wParam, lParam) ;
}