ToolStripRenderer.RenderOverflowButtonBackground ToolStripRenderer.RenderOverflowButtonBackground ToolStripRenderer.RenderOverflowButtonBackground ToolStripRenderer.RenderOverflowButtonBackground Event

定义

在呈现溢出按钮的背景时发生。Occurs when the background for an overflow button is rendered.

public:
 event System::Windows::Forms::ToolStripItemRenderEventHandler ^ RenderOverflowButtonBackground;
public event System.Windows.Forms.ToolStripItemRenderEventHandler RenderOverflowButtonBackground;
member this.RenderOverflowButtonBackground : System.Windows.Forms.ToolStripItemRenderEventHandler 
Public Custom Event RenderOverflowButtonBackground As ToolStripItemRenderEventHandler 

示例

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RenderOverflowButtonBackground事件的发生。In the example, an event handler reports on the occurrence of the RenderOverflowButtonBackground 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.

若要运行示例代码, 请将其粘贴到一个项目中, 该项目包含从ToolStripRenderer继承的类型的实例, 如ToolStripProfessionalRenderer ToolStripSystemRenderer或。To run the example code, paste it into a project that contains an instance of a type that inherits from ToolStripRenderer, such as a ToolStripSystemRenderer or ToolStripProfessionalRenderer. 然后命名该实例ToolStripRenderer1 , 并确保事件处理程序RenderOverflowButtonBackground与事件相关联。Then name the instance ToolStripRenderer1 and ensure that the event handler is associated with the RenderOverflowButtonBackground event.

private void ToolStripRenderer1_RenderOverflowButtonBackground(Object sender, ToolStripItemRenderEventArgs e) {

System.Text.StringBuilder messageBoxCS = new System.Text.StringBuilder();
messageBoxCS.AppendFormat("{0} = {1}", "Graphics", e.Graphics );
messageBoxCS.AppendLine();
messageBoxCS.AppendFormat("{0} = {1}", "Item", e.Item );
messageBoxCS.AppendLine();
messageBoxCS.AppendFormat("{0} = {1}", "ToolStrip", e.ToolStrip );
messageBoxCS.AppendLine();
MessageBox.Show(messageBoxCS.ToString(), "RenderOverflowButtonBackground Event" );
}
Private Sub ToolStripRenderer1_RenderOverflowButtonBackground(sender as Object, e as ToolStripItemRenderEventArgs) _ 
     Handles ToolStripRenderer1.RenderOverflowButtonBackground

    Dim messageBoxVB as New System.Text.StringBuilder()
    messageBoxVB.AppendFormat("{0} = {1}", "Graphics", e.Graphics)
    messageBoxVB.AppendLine()
    messageBoxVB.AppendFormat("{0} = {1}", "Item", e.Item)
    messageBoxVB.AppendLine()
    messageBoxVB.AppendFormat("{0} = {1}", "ToolStrip", e.ToolStrip)
    messageBoxVB.AppendLine()
    MessageBox.Show(messageBoxVB.ToString(),"RenderOverflowButtonBackground Event")

End Sub

注解

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