hdc = BeginPaint(hWnd, &ps);
		hBitmap = LoadImage(NULL, L"Untitled.bmp",
			IMAGE_BITMAP, 0,0, LR_LOADFROMFILE);
		GetObject(hBitmap,sizeof(BITMAP), &Bitmap);
		hCompatibleDC = CreateCompatibleDC(hdc);
		hOldBitmap = SelectObject(hCompatibleDC,hBitmap);
		GetClientRect(hWnd, &Rect);
		StretchBlt(hdc,0,0,Rect.right,Rect.bottom,
			hCompatibleDC,0,0, Bitmap.bmWidth,
			Bitmap.bmHeight,SRCCOPY);
		SelectObject(hCompatibleDC,hOldBitmap);
		DeleteObject(hBitmap);
		DeleteDC(hCompatibleDC);