ToolStripItem::ImageTransparentColor Property
.NET Framework (current version)
Gets or sets the color to treat as transparent in a ToolStripItem image.
Assembly: System.Windows.Forms (in System.Windows.Forms.dll)
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.
ToolStripButton^ imageButton;
void InitializeImageButtonWithToolTip()
{
// Construct the button and set the image-related properties.
imageButton = gcnew ToolStripButton;
imageButton->Image =
gcnew Bitmap(Timer::typeid,"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);
}
// internal:
.NET Framework
Available since 2.0
Available since 2.0
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