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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

Supported in: 4.5, 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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