CDialog和CDialogEx之间的区别 [英] Difference between CDialog and CDialogEx

问题描述

CDialog和CDialogEx有什么区别?我决定使用CDialog，因为如果Dlg是从CDialogEx派生的，则无法将m_pMainWnd分配给Dlg.

What is the difference between CDialog and CDialogEx? I decided to use CDialog because I can't assign m_pMainWnd to Dlg if Dlg is derived from CDialogEx.

BOOL CPreparationApp::InitInstance()
{
    MyClass2 Dlg; //derived from CDialog 
    m_pMainWnd = &Dlg;
    Dlg.DoModal();
    return TRUE;
}

如果不使用像表单向导那样的CDialogEx，我可能会遇到什么样的问题?

What kind of problems I might fave by not using CDialogEx like form wizard was offering?

如何分配从CDialogEx派生的m_pMainWnd变量?

How to assign m_pMainWnd variable derived from CDialogEx?

推荐答案

CDialogEX是从CDialog派生的，因此，将m_pMainWnd设置为CDialogEx派生的对象应该没有问题. CDialogEx提供了设置对话框的背景颜色或图像的能力.

CDialogEX is derived from CDialog, so, setting m_pMainWnd to a CDialogEx derived object should not be a problem. CDialogEx provides the abillity to set the background color or image of the dialog.

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