SetRgnColor method (Main Control)

Visual Basic example
Visual C++ 4.0 example
Visual J++ example

Syntax short SetRgnColor (OLE_COLOR crMatch, short iCombineMode);

Overview: Refer to Creating and Using a Bitmap Region.

Remarks

Adds a region that consists of all pixels of a specified color.

You specify the color using a COLORREF value, which is a Windows-defined data type. You can also specify a palette index as explained in Using Palette Indexes As Color Values.

With this method, you can either replace the current region or create a complex region by setting a flag that determines how the added region interacts with the existing region. For possible values, specified in the iCombineMode parameter, refer to Flags for Setting a Region.

You can use this method to simulate the use of a transparent color as follows:

Call this method, with the transparent color in the crMatch parameter and L_RGN_SETNOT in the iCombineMode parameter.
Use the Floater property and the FloaterVisible property to display and manipulate the region, which consists of every part of the bitmap, except the area with the specified color.