ToolStripItem.BackColorChanged 事件


發生於 BackColor 屬性的值變更時。Occurs when the value of the BackColor property changes.

 event EventHandler ^ BackColorChanged;
public event EventHandler BackColorChanged;
member this.BackColorChanged : EventHandler 
Public Custom Event BackColorChanged As EventHandler 


下列程式碼範例示範如何使用這個成員。The following code example demonstrates the use of this member. 在此範例中,事件處理常式會報告 BackColorChanged 事件的發生。In the example, an event handler reports on the occurrence of the BackColorChanged event. 此報表可協助您瞭解事件發生的時間,並可協助您進行調試。This report helps you to learn when the event occurs and can assist you in debugging. 若要報告多個事件或經常發生的事件,請考慮使用 Console.WriteLine 取代 MessageBox.Show,或將訊息附加到多行 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.

若要執行範例程式碼,請將它貼入包含繼承自 ToolStripItem之類型實例的專案,例如 ToolStripButtonToolStripMenuItemTo run the example code, paste it into a project that contains an instance of a type that inherits from ToolStripItem, such as a ToolStripButton or ToolStripMenuItem. 然後將實例命名為 ToolStripItem1,並確定事件處理常式與 BackColorChanged 事件相關聯。Then name the instance ToolStripItem1 and ensure that the event handler is associated with the BackColorChanged event.

private void ToolStripItem1_BackColorChanged(Object sender, EventArgs e) {

   MessageBox.Show("You are in the ToolStripItem.BackColorChanged event.");
Private Sub ToolStripItem1_BackColorChanged(sender as Object, e as EventArgs) _ 
     Handles ToolStripItem1.BackColorChanged

   MessageBox.Show("You are in the ToolStripItem.BackColorChanged event.")

End Sub


如果 BackColor 屬性是以程式設計方式修改或使用者互動來變更,就會引發這個事件。This event is raised if the BackColor property is changed by either a programmatic modification or user interaction.


變更 ToolStripEnabled 屬性並不會引發 BackColorChanged 事件。Changing the Enabled property of a ToolStrip does not raise the BackColorChanged event. 使用特定的屬性設定來引發此事件。Raise this event with specific property settings.

如需處理事件的詳細資訊,請參閱處理和引發事件For more information about handling events, see Handling and Raising Events.