请问：这一段代码中有内存泄漏吗？

[elusive_wonderer]

CDC *pDC=GetDC();
CDC memDC;

CBitmap drawnBit;
if(!drawnBit.LoadBitmap(MAKEINTRESOURCE(101)))
return;

memDC.CreateCompatibleDC(pDC);

memDC.SelectObject(drawnBit);

pDC->StretchBlt(x*24+10,y*24+10,24,24,&memDC,0,0,24,24,SRCCOPY);

ASSERT(ReleaseDC(pDC));
memDC.DeleteDC();

ASSERT(drawnBit.DeleteObject());

[yinx]

没找到

[gamedragon]

CBitmap *bmp = memDC.SelectObject(drawnBit);
...
memDC.SelectObject(bmp);
memDC.DeleteDC();

[elusive_wonderer]

我在程序中多次调用过此段代码，最后资源被慢慢耗尽。我检查代码后，好象这一部分最值得怀疑，请各位高手出手指教。

x,y 为调用语句传过来的整形值。

[elusive_wonderer]

gamedragon(gamedragon),
是不是每一个 SelectObject 都必须要用对应的 GDI 对象变量接收其返值啊？

我试试，先谢谢各位。

[gamedragon]

应该是指针吧，memDC.SelectObject(&drawnBit)
当memDC.SelectObject(&drawnBit)时，drawnBit就是current selected object。当在调用其他的SelectObject(other_bmp)时，当前被选中的bmp就是非current selected object。

[cen]

：　gamedragon(gamedragon)　(2001-8-8 17:12:45) 得0分
CBitmap *bmp = memDC.SelectObject(drawnBit);
...
memDC.SelectObject(bmp);
memDC.DeleteDC();
/////
GDI对象使用后应释放，否则GDI资源要被耗尽

[elusive_wonderer]

An application should not call DeleteObject on a CGdiObject object that is currently selected into a device context.

An application should not call DeleteDC if objects have been selected into the device context. Objects must first be selected out of the device context before it it is deleted.

哪位高手给解释一下“currently selected into a device context”到底是个什么意思？我在上面列出的程序中，GDI 对象是不是“被选入设备上下文”呢？何时才是非“currently selected into a device context”状态呢？

[airhawk]

selectobject function replace the current object with selected object,you should resolve the replaced object ,when you are to release the current used object,call selectobject function ,select the replaced object again,and then release the current used object ,else the replaced object is leaked.