Form.InputLanguageChanging Form.InputLanguageChanging Form.InputLanguageChanging Form.InputLanguageChanging Event

定义

当用户尝试更改窗体的输入语言时发生。Occurs when the user attempts to change the input language for the form.

public:
 event System::Windows::Forms::InputLanguageChangingEventHandler ^ InputLanguageChanging;
public event System.Windows.Forms.InputLanguageChangingEventHandler InputLanguageChanging;
member this.InputLanguageChanging : System.Windows.Forms.InputLanguageChangingEventHandler 
Public Custom Event InputLanguageChanging As InputLanguageChangingEventHandler 

示例

下面的代码示例演示如何将此成员。The following code example demonstrates the use of this member. 在示例中,事件处理程序报告的匹配项InputLanguageChanging事件。In the example, an event handler reports on the occurrence of the InputLanguageChanging event. 此报告可帮助您了解事件发生的并可以帮助您进行调试。This report helps you to learn when the event occurs and can assist you in debugging. 若要报告或频繁发生的事件上多个事件,请考虑更换MessageBox.ShowConsole.WriteLine或将消息附加到多行TextBoxTo report on multiple events or on events that occur frequently, consider replacing MessageBox.Show with Console.WriteLine or appending the message to a multiline TextBox.

若要运行此代码示例,请将其粘贴到包含类型的实例的项目Form名为Form1To run the example code, paste it into a project that contains an instance of type Form named Form1. 然后,确保事件处理程序相关联InputLanguageChanging事件。Then ensure that the event handler is associated with the InputLanguageChanging event.

private void Form1_InputLanguageChanging(Object sender, InputLanguageChangingEventArgs e) {

System.Text.StringBuilder messageBoxCS = new System.Text.StringBuilder();
messageBoxCS.AppendFormat("{0} = {1}", "InputLanguage", e.InputLanguage );
messageBoxCS.AppendLine();
messageBoxCS.AppendFormat("{0} = {1}", "Culture", e.Culture );
messageBoxCS.AppendLine();
messageBoxCS.AppendFormat("{0} = {1}", "SysCharSet", e.SysCharSet );
messageBoxCS.AppendLine();
messageBoxCS.AppendFormat("{0} = {1}", "Cancel", e.Cancel );
messageBoxCS.AppendLine();
MessageBox.Show(messageBoxCS.ToString(), "InputLanguageChanging Event" );
}
Private Sub Form1_InputLanguageChanging(sender as Object, e as InputLanguageChangingEventArgs) _ 
     Handles Form1.InputLanguageChanging

    Dim messageBoxVB as New System.Text.StringBuilder()
    messageBoxVB.AppendFormat("{0} = {1}", "InputLanguage", e.InputLanguage)
    messageBoxVB.AppendLine()
    messageBoxVB.AppendFormat("{0} = {1}", "Culture", e.Culture)
    messageBoxVB.AppendLine()
    messageBoxVB.AppendFormat("{0} = {1}", "SysCharSet", e.SysCharSet)
    messageBoxVB.AppendLine()
    messageBoxVB.AppendFormat("{0} = {1}", "Cancel", e.Cancel)
    messageBoxVB.AppendLine()
    MessageBox.Show(messageBoxVB.ToString(),"InputLanguageChanging Event")

End Sub

注解

窗体的输入语言的更改之前,将发生此事件。This event occurs before the change of input language is made for the form. 可以通过设置取消语言更改Cancel的属性InputLanguageChangingEventArgs传递给事件处理程序falseYou can cancel the language change by setting the Cancel property of the InputLanguageChangingEventArgs passed to your event handler to false. 如果取消该事件,则不会更改输入的语言。If the event is canceled, the input language is not changed. 此事件可用于确定请求的输入的语言的更改是否适合你的应用程序。You can use this event to determine whether the requested input language change is appropriate for your application.

有关处理事件的详细信息,请参阅处理和引发事件For more information about handling events, see Handling and Raising Events.

适用于

另请参阅