我的子窗口控件中贴一张图片,为什么没贴上?

Question

请教大家一个问题,要在我的子窗口控件中贴一张图片,为什么没贴上?下面是代码
        case  WM_PAINT:
              hdc = BeginPaint (p->WndMyButtons0, &Paint) ;
                hBitmap = LoadBitmap(p->Win.Module,TEXT( "sun.bmp"));
          GetObject (hBitmap, sizeof (BITMAP), &bitmap) ;
              cxBitmap = bitmap.bmWidth ;
              cyBitmap = bitmap.bmHeight ;
         hMemDC = CreateCompatibleDC(hdc);
         hOldBitmap = (HBITMAP)SelectObject(hMemDC, hBitmap);
              BitBlt (hdc, 0, 0, cxBitmap, cyBitmap, 
                hMemDC, 0, 0, SRCCOPY) ;
        
           SelectObject(hMemDC,hOldBitmap);
          DeleteDC (hdc) ;
          DeleteDC (hMemDC) ;
                  EndPaint (p->WndMyButtons0, &Paint) ;          
                return 0;
    case WM_DESTROY:
          DeleteObject (hBitmap) ;
          DeleteObject (hOldBitmap) ;
          PostQuitMessage (0) ;
          return 0 ; 

Answer 1

什么控件?有些根本不响应WM_PAINT,如按钮类.看看的你的控件有WM_PAINT消息

Answer 2

楼上的大侠,能不能再提示一下啊?
我是BS_OWNERDRAW属性的,这个应该没问题吧?下面是创建窗口的全部代码.
WNDCLASS WinClass; memset(&WinClass,0,sizeof(WinClass));
WinClass.style = CS_HREDRAW | CS_VREDRAW;
WinClass.lpfnWndProc = (WNDPROC) MyButtonsProc0;
WinClass.cbClsExtra = 0;
WinClass.cbWndExtra = 0;
WinClass.hInstance = p->Win.Module;
WinClass.hCursor = WinCursorArrow();
WinClass.hbrBackground = GetSysColorBrush(COLOR_BTNFACE);
WinClass.lpszMenuName = 0;
WinClass.lpszClassName = T("MyButtonBar");
RegisterClass(&WinClass);
         
p->WndMyButtons0  = CreateWindowEx( 
0,                    
WinClass.lpszClassName,       
T("MyButton"),   
WS_CHILD | WS_VISIBLE |BS_OWNERDRAW, 
// 10, 22,    
// 30, 30,   
              CW_USEDEFAULT, CW_USEDEFAULT,
                     CW_USEDEFAULT, CW_USEDEFAULT,
p->Win.Wnd,
NULL,//(HMENU) ,
p->Win.Module,                     
NULL                      
);

Answer 3

DeleteDC (hdc) ;
改成
DeleteDC (hBitmap) ;
试试看

Answer 4

hBitmap = LoadBitmap(p->Win.Module,TEXT( "sun.bmp"));
上面这句出问题的可能性比较大. 建议用较一般的写法"
CBitmap bitmap;
bitmap.LoadBitmap(MAKEINTRESOURCE(IDB_BITMAP1));
你先把位图导入资源后,试试

Answer 5

参考:
g_skin_bmp = (HBITMAP)LoadImage(hInstance,MAKEINTRESOURCE(IDB_skin),IMAGE_BITMAP,0,0,0);if(g_skin_bmp==NULL)   return false;case WM_PAINT:{ hdc = BeginPaint(hWnd, &ps); // TODO: 在此添加任意绘图代码... //<-绘制皮肤-------------------------------------------------------> HDC hSrcDC = CreateCompatibleDC(NULL); SelectObject(hSrcDC,g_skin_bmp); BitBlt(hdc, 0, 0, g_nBmpW, g_nBmpH, hSrcDC, 0, 0, SRCCOPY); DeleteDC(hSrcDC); //<----------------------------------------------------------------> EndPaint(hWnd, &ps); break;}

Answer 6

用vc做了一个小程序,通过断点发现,是位图没有加载成功....,楼上的老大说的不错,不过我是用sdk,没有那个类,成员函数的参数也不一样,想改成loadimage 看看

Answer 7

在vc下成功了,不过我的是移植到evc下的,在那下面不成功,郁闷...
用这句就可以了
 hBitmap = LoadBitmap(((LPCREATESTRUCT) lParam)->hInstance, MAKEINTRESOURCE(IDB_PINERY1));