ImageList.RecreateHandle 事件


重新创建 Handle 时出现。Occurs when the Handle is recreated.

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




下面的代码示例演示如何使用此成员。The following code example demonstrates the use of this member. 在此示例中,事件处理程序报告事件的发生 RecreateHandleIn the example, an event handler reports on the occurrence of the RecreateHandle event. 此报表可帮助你了解何时发生事件,并可帮助你进行调试。This report helps you to learn when the event occurs and can assist you in debugging. 若要报告多个事件或频繁发生的事件,请考虑 MessageBox.Show Console.WriteLine 将消息替换为多行或将其追加到多行 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.

若要运行示例代码,请将其粘贴到包含名为的类型的实例的项目中 ImageList ImageList1To run the example code, paste it into a project that contains an instance of type ImageList named ImageList1. 然后,确保事件处理程序与事件相关联 RecreateHandleThen ensure that the event handler is associated with the RecreateHandle event.

private void ImageList1_RecreateHandle(Object sender, EventArgs e) {

   MessageBox.Show("You are in the ImageList.RecreateHandle event.");
Private Sub ImageList1_RecreateHandle(sender as Object, e as EventArgs) _ 
     Handles ImageList1.RecreateHandle

   MessageBox.Show("You are in the ImageList.RecreateHandle event.")

End Sub


Handle 通过更改或等操作重新创建时,可以使用此事件进行特殊处理 ColorDepth ImageSizeYou can use this event to do special processing when the Handle is recreated by actions such as changing the ColorDepth or ImageSize. 可能需要特殊处理 ColorDepth ImageSize ,因为在设置属性后设置或属性 Images 会导致重新创建句柄并放弃图像。Special processing may be required because setting the ColorDepth or the ImageSize property after setting the Images property causes the handle to be recreated and the images to be discarded.