为什么自己的bmp图片显示不了?

为什么自己的bmp图片显示不了?
hInstance = ((LPCREATESTRUCT)lParam) -> hInstance;
我按照书上的写的..可是没有显示，希望大师能够帮助我..嘻嘻!
case WM_PAINT :
            hdc = BeginPaint(hwnd, &ps);
            hBitmap = LoadBitmap(hInstance, "C:\\Users\\Administrator\\Desktop\\girl.bmp");
            GetObject(hBitmap, sizeof(BITMAP), &bitmap);
            cxSource = bitmap.bmWidth;
            cySource = bitmap.bmHeight;
            hdcMem = CreateCompatibleDC(hdc);
            SelectObject(hdcMem, hBitmap);
            BitBlt(hdc, 0, 0, cxSource, cySource, hdcMem, 0, 0, SRCCOPY);
            DeleteDC(hdcMem);
            EndPaint(hwnd, &ps);