在MFC中显示对话框 [英] Display a dialoge box in MFC

问题描述

您好，我正在研究SDI View Architecture MFC应用程序，当用户单击帮助"时，我需要显示一个外部对话框.例子.到目前为止，我已经准备好对话框，并在示例按钮"上添加了事件处理程序，并添加了

Hi I''m working on an SDI View Architecture MFC application and I need to display an external dialog box when the user clicks Help -> Example. So far i have my dialog box ready and I added an event handler on the Example ''button'' and added

<pre lang="cs"><br />
void CtestSDIApp::OnHelpExample()<br />
{<br />
    rulesDlg testdlg;<br />
    testdlg.DoModal();<br />
}</pre><br />

我似乎看不出问题出在哪里，但是那行不通.它确实可以编译，但是仍然可以.

关于在MFC中显示对话框最简单的方法有什么建议吗?

I don''t seem to see where the problem is, but it doesn''t work. It does compile but yeah still.

Any suggestion on what''s the easiest way to display a dialog box in MFC?

thanks a lot!

推荐答案

第一步是将未调用处理程序的情况与对话框出现故障的情况区分开.

您可以在处理程序中放置一个断点，看看它是否命中，或在其中放置一个AfxMessageBox().

The first step is to distinguish the case where your handler isn''t being called from the case where the dialog box is malfunctioning.

You can put a breakpoint in the handler and see if it''s hit, or put an AfxMessageBox () in there.

好，它确实起作用了，我只需要将它与正确的.cpp文件，在这种情况下是我的文档，所以我发布的相同代码也起作用了.

谢谢您的帮助！

Ok it actually worked, I just had to associate it with the right .cpp file which in this case was my doc, so the same code i posted about worked.

Thanks for the help guys!

鉴于rulesDlg是正确定义的CDialog，这应该可以正常工作.如果您为rulesDlg发布代码，我们很可能会发现那里是否有问题.

That should work just fine given that rulesDlg is a properly defined CDialog. If you post you code for rulesDlg we can probably see if there''s anything wrong there.

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