ToolStripRenderer.RenderDropDownButtonBackground Event

Definition

Namespace:

System.Windows.Forms

Assembly:

System.Windows.Forms.dll

Source:

ToolStripRenderer.cs

Occurs when the background for a ToolStripDropDownButton is rendered.

public:
 event System::Windows::Forms::ToolStripItemRenderEventHandler ^ RenderDropDownButtonBackground;

public event System.Windows.Forms.ToolStripItemRenderEventHandler RenderDropDownButtonBackground;

member this.RenderDropDownButtonBackground : System.Windows.Forms.ToolStripItemRenderEventHandler 

Public Custom Event RenderDropDownButtonBackground As ToolStripItemRenderEventHandler 

Event Type

ToolStripItemRenderEventHandler

Examples

The following code example demonstrates the use of this member. In the example, an event handler reports on the occurrence of the RenderDropDownButtonBackground event. This report helps you to learn when the event occurs and can assist you in debugging.

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. Then name the instance ToolStripRenderer1 and ensure that the event handler is associated with the RenderDropDownButtonBackground event.

private void ToolStripRenderer1_RenderDropDownButtonBackground(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(), "RenderDropDownButtonBackground Event" );
}

Private Sub ToolStripRenderer1_RenderDropDownButtonBackground(sender as Object, e as ToolStripItemRenderEventArgs) _ 
     Handles ToolStripRenderer1.RenderDropDownButtonBackground

    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(),"RenderDropDownButtonBackground Event")

End Sub

Remarks

For more information about handling events, see Handling and Raising Events.