ToolStripItemRenderEventArgs Class
.NET Framework 2.0
Note: This class is new in the .NET Framework version 2.0.
Provides data for the events that render the background of objects derived from ToolStripItem in the ToolStripRenderer class.
Namespace: System.Windows.Forms
Assembly: System.Windows.Forms (in system.windows.forms.dll)
Assembly: System.Windows.Forms (in system.windows.forms.dll)
The following code example demonstrates how to override the OnRenderButtonBackground method to draw a border around a ToolStripButton control's Image. This code example is part of a larger example provided for the ToolStripRenderer class.
' This method draws a border around the button's image. If the background ' to be rendered belongs to the empty cell, a string is drawn. Otherwise, ' a border is drawn at the edges of the button. Protected Overrides Sub OnRenderButtonBackground(e As ToolStripItemRenderEventArgs) MyBase.OnRenderButtonBackground(e) ' Define some local variables for convenience. Dim g As Graphics = e.Graphics Dim gs As GridStrip = e.ToolStrip Dim gsb As ToolStripButton = e.Item ' Calculate the rectangle around which the border is painted. Dim imageRectangle As New Rectangle(borderThickness, borderThickness, e.Item.Width - 2 * borderThickness, e.Item.Height - 2 * borderThickness) ' If rendering the empty cell background, draw an ' explanatory string, centered in the ToolStripButton. If gsb Is gs.EmptyCell Then e.Graphics.DrawString("Drag to here", gsb.Font, SystemBrushes.ControlDarkDark, imageRectangle, style) Else ' If the button can be a drag source, paint its border red. ' otherwise, paint its border a dark color. Dim b As Brush = IIf(gs.IsValidDragSource(gsb), Brushes.Red, SystemBrushes.ControlDarkDark) ' Draw the top segment of the border. Dim borderSegment As New Rectangle(0, 0, e.Item.Width, imageRectangle.Top) g.FillRectangle(b, borderSegment) ' Draw the right segment. borderSegment = New Rectangle(imageRectangle.Right, 0, e.Item.Bounds.Right - imageRectangle.Right, imageRectangle.Bottom) g.FillRectangle(b, borderSegment) ' Draw the left segment. borderSegment = New Rectangle(0, 0, imageRectangle.Left, e.Item.Height) g.FillRectangle(b, borderSegment) ' Draw the bottom segment. borderSegment = New Rectangle(0, imageRectangle.Bottom, e.Item.Width, e.Item.Bounds.Bottom - imageRectangle.Bottom) g.FillRectangle(b, borderSegment) End If End Sub End Class
System.Object
System.EventArgs
System.Windows.Forms.ToolStripItemRenderEventArgs
System.Windows.Forms.ToolStripItemImageRenderEventArgs
System.Windows.Forms.ToolStripItemTextRenderEventArgs
System.Windows.Forms.ToolStripSeparatorRenderEventArgs
System.EventArgs
System.Windows.Forms.ToolStripItemRenderEventArgs
System.Windows.Forms.ToolStripItemImageRenderEventArgs
System.Windows.Forms.ToolStripItemTextRenderEventArgs
System.Windows.Forms.ToolStripSeparatorRenderEventArgs
Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.
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