表单在 C# 中失去焦点
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Form's lost focus in C#
提问by
This may be a simple C# question but I need a solution.
这可能是一个简单的 C# 问题，但我需要一个解决方案。
I have two forms, form1and form2, with form1having a button. On the clickof the button, I want to show form2. When form2looses focus I want to hide it (form2). How can I do this? I tried to subscribe to the LostFocusevent of form2, but it isn't working.
我有两个表单，form1和form2，form1有一个button。在点击按钮的，我想展示窗口2。当form2失去焦点时，我想隐藏它（form2）。我怎样才能做到这一点？我试图订阅form2的LostFocus事件，但它不起作用。
Please help me with this.
请帮我解决一下这个。
Note -- I use .Net 2.0
注意——我使用 .Net 2.0
采纳答案by Jcl
Use the Deactivateevent handler
使用Deactivate事件处理程序
回答by Kent Boogaart
If I understand your question, I think you actually want to trap deactivation. Button handler inside your main form:
如果我理解您的问题，我认为您实际上想要陷阱停用。主窗体中的按钮处理程序：
private void button1_Click(object sender, EventArgs e)
{
Form childForm = new Form();
childForm.Deactivate += delegate
{
childForm.Close();
};
childForm.Show();
}
