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ToolStripItem.ImageTransparentColor Property

 

Gets or sets the color to treat as transparent in a ToolStripItem image.

Namespace:   System.Windows.Forms
Assembly:  System.Windows.Forms (in System.Windows.Forms.dll)

public Color ImageTransparentColor { get; set; }

Property Value

Type: System.Drawing.Color

One of the Color values.

The following code example demonstrates how to set the Image, ImageScaling, and ImageTransparentColor for a ToolStripItem. In addition, it demonstrates how to set and show a custom ToolTip for the item.

internal ToolStripButton imageButton;

private void InitializeImageButtonWithToolTip()
{

	// Construct the button and set the image-related properties.
	imageButton = new ToolStripButton();
	imageButton.Image = new Bitmap(typeof(Timer), "Timer.bmp");
	imageButton.ImageScaling = ToolStripItemImageScaling.SizeToFit;

	// Set the background color of the image to be transparent.
	imageButton.ImageTransparentColor = Color.FromArgb(0, 255, 0);

	// Show ToolTip text, set custom ToolTip text, and turn
	// off the automatic ToolTips.
	toolStrip1.ShowItemToolTips = true;
	imageButton.ToolTipText = "Click for the current time";
	imageButton.AutoToolTip = false;

	// Add the button to the ToolStrip.
	toolStrip1.Items.Add(imageButton);

}

.NET Framework
Available since 2.0
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