warning :OnDestroy or PostNcDestroy in derived class will not be called



应用程序中使用指针创建了对话框，在析构函数中使用delete时，会出现以下警告：

AppMsg - Warning: calling DestroyWindow in CWnd::~CWnd; OnDestroy or PostNcDestroy in derived class will not be called.
AppMsg - Warning: calling DestroyWindow in CDialog::~CDialog --
AppMsg - 	OnDestroy or PostNcDestroy in derived class will not be called.

我们在释放对话框指针的时候应该先通过对话框指针调用DestroyWindow()方法，然后再用delete删除。

C**Dlg::~C**Dlg()
{
	if(m_pWebDlg != NULL)
	{
		m_pWebDlg->DestroyWindow();
		delete m_pWebDlg;
	}
}

只有这样才可以把这个警告给去掉