Creates or updates the associated class object's bitmap region by adding a region that consists of all the white pixels in a 1-bit mask image.
virtual L_INT LBitmapRgn::SetRgnFromMask(LBitmapMask)
The 1-bit black-and-white bitmap object used as a mask.
|SUCCESS||The function was successful.|
|< 1||An error occurred. Refer to Return Codes.|
To update an existing region, you specify how the new region is to be combined with the existing one. For descriptions of the possibilities, refer to Creating a Bitmap Region.
The LBitmapMask parameter is passed by reference and is a required parameter.
For an example, refer to LBitmapRgn::SetRgnPolygon.
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