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; }