Control.ContextMenuChanged 事件
定义
重要
一些信息与预发行产品相关，相应产品在发行之前可能会进行重大修改。 对于此处提供的信息，Microsoft 不作任何明示或暗示的担保。
当 ContextMenu 属性的值更改时发生。
public:
event EventHandler ^ ContextMenuChanged;public event EventHandler ContextMenuChanged;[System.ComponentModel.Browsable(false)]
public event EventHandler ContextMenuChanged;member this.ContextMenuChanged : EventHandler [<System.ComponentModel.Browsable(false)>]
member this.ContextMenuChanged : EventHandler Public Custom Event ContextMenuChanged As EventHandler 事件类型
- 属性
示例
下面的代码示例在快捷菜单发生更改时显示一条消息。
private:
void AddContextMenuChangedHandler()
{
this->myTextBox->ContextMenuChanged += gcnew EventHandler( this, &MyForm::TextBox_ContextMenuChanged );
}
void TextBox_ContextMenuChanged( Object^ /*sender*/, EventArgs^ /*e*/ )
{
MessageBox::Show( L"Shortcut menu of TextBox is changed." );
}
private void AddContextMenuChangedHandler()
{
this.myTextBox.ContextMenuChanged += new EventHandler(TextBox_ContextMenuChanged);
}
private void TextBox_ContextMenuChanged(object sender, EventArgs e)
{
MessageBox.Show("Shortcut menu of TextBox is changed.");
}
Private Sub AddContextMenuChangedHandler()
AddHandler Me.myTextBox.ContextMenuChanged, AddressOf TextBox_ContextMenuChanged
End Sub
Private Sub TextBox_ContextMenuChanged(sender As Object, e As EventArgs)
MessageBox.Show("Shortcut menu of TextBox is changed.")
End Sub
注解
如果 ContextMenu 属性通过编程修改或用户交互更改，则会引发此事件。
有关处理事件的详细信息，请参阅 处理和引发事件。