CDialog - 来自MODELESS对话框的EndDialog？(CDialog - EndDialog from a MODELESS dialog?)

 MS文档 （和其他 ）“明确”陈述： 
 
 
 
 ...因为CDialog对象的普通OnOk和OnCancel成员函数会调用EndDialog，所以请确保您的无模式对话框不会调用这些函数而是覆盖它们 
 
 
 由于CDialog::OnOk有效地调用CDialog::EndDialog ，该方法如下所示： 
 
void CDialog::EndDialog(int nResult)
{
    ASSERT(::IsWindow(m_hWnd));

    if (m_nFlags & (WF_MODALLOOP|WF_CONTINUEMODAL))
        EndModalLoop(nResult);

    ::EndDialog(m_hWnd, nResult);
}
 
 我们还可以检查::EndDialog的文档再次“清楚”地说明： 
 
 
 
 必须使用EndDialog函数销毁DialogBox，DialogBoxParam，DialogBoxIndirect和DialogBoxIndirectParam函数创建的对话框。 应用程序从对话框过程中调用EndDialog; 该功能不得用于任何其他目的。 
 
 
 然而，我有一个CDialog派生类，它具有默认行为wrt。 OnOK ，当我使用非模态/无模式时， 似乎一切正常。 
 
 即：*当我关闭（无模式）对话框时，它将从视图中关闭/删除。 *该应用程序不显示任何内存泄漏。 （MFC调试版） 
 
 所以呢？ 我是否需要阻止EndDialog并自行调用DestroyWindow ？ 
 
 
 注意：我知道文档和“网络”的内容。 只是我还没有找到为什么我需要以不同的方式做到这一点，这一类应该可用于无模式和模态模式，所以不必做任何不同的事情可能很方便。 

The MS documentation (and others) "clearly" states:
 
 
 
... Because the normal OnOk and OnCancel member functions of a CDialog object would call EndDialog, make sure your modeless dialog box does not call those functions and instead overrides
 
 
Since CDialog::OnOk effectively calls CDialog::EndDialog, and that method looks like:
 
void CDialog::EndDialog(int nResult)
{
    ASSERT(::IsWindow(m_hWnd));

    if (m_nFlags & (WF_MODALLOOP|WF_CONTINUEMODAL))
        EndModalLoop(nResult);

    ::EndDialog(m_hWnd, nResult);
}
 
we can also check the docs for ::EndDialog which again "clearly" state:
 
 
 
Dialog boxes created by the DialogBox, DialogBoxParam, DialogBoxIndirect, and DialogBoxIndirectParam functions must be destroyed using the EndDialog function. An application calls EndDialog from within the dialog box procedure; the function must not be used for any other purpose.
 
 
Yet, I have a CDialog derived class that has it's default behavior wrt. OnOKand seemingly everything is working when I use it non-modal / modeless.
 
That is: * When I close the (modeless) dialog, it is closed/removed from view. * The application doesn't show any memory leaks. (MFC debug build)
 
So what? Do I need to prevent EndDialog and call DestroyWindow myself or not?
 
 
Note: I know what the docs and "the web" says. It's just that I haven't yet found why I need to do it differently, and this one class should be usable for modeless and modal mode, so not having to do anything different might be handy.

原文：https://stackoverflow.com/questions/16359005