ToolStripRenderer.RenderItemCheck 事件

定义

当呈现选定 ToolStripItem 的图像时发生。Occurs when the image for a selected ToolStripItem is rendered.

public:
 event System::Windows::Forms::ToolStripItemImageRenderEventHandler ^ RenderItemCheck;
public event System.Windows.Forms.ToolStripItemImageRenderEventHandler RenderItemCheck;
member this.RenderItemCheck : System.Windows.Forms.ToolStripItemImageRenderEventHandler 
Public Custom Event RenderItemCheck As ToolStripItemImageRenderEventHandler 

事件类型

ToolStripItemImageRenderEventHandler

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,事件处理程序报告事件的发生 RenderItemCheckIn the example, an event handler reports on the occurrence of the RenderItemCheck 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,该项目包含从继承的类型的实例 ToolStripRenderer ,如 ToolStripSystemRendererToolStripProfessionalRendererTo 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与事件相关联 RenderItemCheckThen name the instance ToolStripRenderer1 and ensure that the event handler is associated with the RenderItemCheck event.

private void ToolStripRenderer1_RenderItemCheck(Object sender, ToolStripItemImageRenderEventArgs e) {

System.Text.StringBuilder messageBoxCS = new System.Text.StringBuilder();
messageBoxCS.AppendFormat("{0} = {1}", "Image", e.Image );
messageBoxCS.AppendLine();
messageBoxCS.AppendFormat("{0} = {1}", "ImageRectangle", e.ImageRectangle );
messageBoxCS.AppendLine();
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(), "RenderItemCheck Event" );
}
Private Sub ToolStripRenderer1_RenderItemCheck(sender as Object, e as ToolStripItemImageRenderEventArgs) _ 
     Handles ToolStripRenderer1.RenderItemCheck

    Dim messageBoxVB as New System.Text.StringBuilder()
    messageBoxVB.AppendFormat("{0} = {1}", "Image", e.Image)
    messageBoxVB.AppendLine()
    messageBoxVB.AppendFormat("{0} = {1}", "ImageRectangle", e.ImageRectangle)
    messageBoxVB.AppendLine()
    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(),"RenderItemCheck 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