Windows窗体MDI问题 [英] windows forms MDI issue

问题描述

大家好，

我有3种形式，例如form1，form2和form3.所以我想这样添加..

form1.controls.add(from2);
form2.controls.add(from3);

有可能吗...

预先感谢

Hello all,

I have 3 forms like form1,form2 and form3. So i want to add like this..

form1.controls.add(from2);
form2.controls.add(from3);

is it possible....

Thanks in advance

推荐答案

是的，有可能，但您不应该这样做. 结果很丑陋，并且违反了预期的窗口用法.

还是想看看所有的丑陋吗?好，我可以解释一下.

首先，表单之间的父/子关系已经完成.如果尝试调用已显示的分配form1.Parent = form2的方法，则将引发异常.您仍然可以使用属性System.Windows.Forms.Form.TopLevel强制执行此类错误呼叫-将其分配给false以便将表单作为子表单.请参阅:
http://msdn.microsoft.com/en-us/library/system.windows.forms.form.toplevel.aspx [ ^ ].

尝试一下它，看看它是如何工作的，但是对于真正的应用程序则永远不要这样做-没有人会对此表示感谢.对于儿童，请使用任何其他控件.

—SA

Yes, it is possible, but you should not do it. The result is ugly and violates intended window usage.

Still want to see all the ugliness? OK, I can explain how.

First of all, the parent/child relationships between forms is done defunct. If you try to call the methods you have shown of assign form1.Parent = form2, exception will be thrown. You still can force such bad calls using the property System.Windows.Forms.Form.TopLevel — assign it to false for a form to be done a child. Please see:
http://msdn.microsoft.com/en-us/library/system.windows.forms.form.toplevel.aspx[^].

Try it and see how it works, but never do it for real applications — no one will say thank you for that. For children, use any other controls.

—SA

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