我在SDK中实现屏幕站图，但是位图我是在基于对话框的程序中进行，为什么图像始终不显示？

[klcdyx2009]

case WM_LBUTTONDOWN:
{
// MessageBox(NULL,L"abcd",L"hehe",MB_OK);

hBmp=LoadBitmap(MyListhInst,MAKEINTRESOURCE(IDB_BITMAP1));
HDC hdctemp = NULL;
HBITMAP hbmptemp = NULL;
BITMAP bmp;
GetObject(hBmp,sizeof(bmp), &bmp);

hdc = GetDC(hWnd);

TextOut(hdc,0,0,L"美丽",2);
hdcmem = CreateCompatibleDC(hdc);
hdctemp = CreateCompatibleDC(hdc);
hbmptemp = CreateCompatibleBitmap(hdc,rectImage.right - rectImage.left, rectImage.bottom - rectImage.top);

SelectObject(hdctemp,hBmp);
SelectObject(hdcmem,hbmptemp);

bool pp=BitBlt(hdcmem,0,0,ThisOfRect.right- ThisOfRect.left,ThisOfRect.bottom- ThisOfRect.top,hdctemp,rectImage.left,rectImage.top,SRCCOPY);
/*TCHAR MyChar[200];
wsprintf(MyChar,L"textout-%d",pp);
MessageBox(hWnd,MyChar,L"提示",MB_OK);*/

ReleaseDC(hWnd,hdc);
DeleteDC(hdctemp);
DeleteObject(hbmptemp);
DeleteObject(hBmp);

}
我用TextOut字体能显示出来，但是就是图像不显示，为什么？

[小楫轻舟]

LoadBitmap有成功吗？
hBmp是不是NULL

[向立天]

其实我没看明白你的问题

[klcdyx2009]

LoadBitmap不是啊！！！

[klcdyx2009]

LoadBitmap不是 NULL;

[Eleven]

把你的绘图的代码放到WM_PAINT消息中去做

[__lhy]

[Quote=引用楼主 klcdyx2009 的回复:]
case WM_LBUTTONDOWN:
{
// MessageBox(NULL,L"abcd",L"hehe",MB_OK);

hBmp=LoadBitmap(MyListhInst,MAKEINTRESOURCE(IDB_BITMAP1));
HDC hdctemp = NULL;
HBITMAP hbmptemp = NULL;
BITMAP bmp;
GetObject(hBmp,sizeof(bmp), &bmp);

hdc = GetDC(hWnd);

TextOut(hdc,0,0,L"美丽",2);
hdcmem = CreateCompatibleDC(hdc);
hdctemp = CreateCompatibleDC(hdc);
hbmptemp = CreateCompatibleBitmap(hdc,rectImage.right - rectImage.left, rectImage.bottom - rectImage.top);

SelectObject(hdctemp,hBmp);
SelectObject(hdcmem,hbmptemp);

bool pp=BitBlt(hdcmem,0,0,ThisOfRect.right- ThisOfRect.left,ThisOfRect.bottom- ThisOfRect.top,hdctemp,rectImage.left,rectImage.top,SRCCOPY);
/*TCHAR MyChar[200];
wsprintf(MyChar,L"textout-%d",pp);
MessageBox(hWnd,MyChar,L"提示",MB_OK);*/

ReleaseDC(hWnd,hdc);
DeleteDC(hdctemp);
DeleteObject(hbmptemp);
DeleteObject(hBmp);

}
[/Quote]
把内存Bitmap复制到hdc

[klcdyx2009]

不行啊，我是把把内存Bitmap复制到hdc了的啊