ControlPaint::CreateHBitmapTransparencyMask Method (Bitmap^)

 

Creates a color mask for the specified bitmap that indicates which color should be displayed as transparent.

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

public:
[SecurityPermissionAttribute(SecurityAction::LinkDemand, Flags = SecurityPermissionFlag::UnmanagedCode)]
static IntPtr CreateHBitmapTransparencyMask(
	Bitmap^ bitmap
)

Parameters

bitmap
Type: System.Drawing::Bitmap^

The Bitmap to create the transparency mask for.

Return Value

Type: System::IntPtr

The handle to the Bitmap mask.

You are responsible for de-allocating the bitmap.

.NET Framework
Available since 1.1
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