GDI+ 对象释放崩溃的问题

确保在Gdiplus::GdiplusShutdown(m_gdiplusToken); 之前delete 掉GDI+的对象,例如:delete *pBitmap;

如果先Gdiplus::GdiplusShutdown(m_gdiplusToken);再delete *pBitmap; 程序会崩溃。

有时候会为了方便误将Gdiplus::GdiplusShutdown(m_gdiplusToken)先释放了,为了确保这种情况
在MFC中尽量按下面方式释放:
int CXXXApp:: ExitInitInstance()
{
GdiplusShutdown(m_GdiplusToken);
return CWinApp:: ExitInstance();

}


在WTL中释放:

GdiplusStartupInput   m_gdiplusStartupInput;
ULONG_PTR             m_gdiplusToken;
int WINAPI _tWinMain(HINSTANCE hInstance, HINSTANCE /*hPrevInstance*/, LPTSTR lpstrCmdLine, int nCmdShow)
{
	HRESULT hRes = ::CoInitialize(NULL);
//	HRESULT hRes = ::CoInitializeEx(NULL, COINIT_MULTITHREADED);
	ATLASSERT(SUCCEEDED(hRes));

      Gdiplus::GdiplusStartup(&m_gdiplusToken, &m_gdiplusStartupInput, NULL);

	::DefWindowProc(NULL, 0, 0, 0L);


	AtlInitCommonControls(ICC_BAR_CLASSES);	// add flags to support other controls


	hRes = _Module.Init(NULL, hInstance);
	ATLASSERT(SUCCEEDED(hRes));


	int nRet = Run(lpstrCmdLine, nCmdShow);


	_Module.Term();
	::CoUninitialize();
    Gdiplus::GdiplusShutdown(m_gdiplusToken);
	return nRet;
}

posted @ 2013-12-03 15:22  奥雷连诺  阅读(791)  评论(0编辑  收藏  举报