Classes and Member Functions > LBitmapRgn > LBitmapRgn Member Functions > LBitmapRgn::CreateMaskFromBitmapRgn

LBitmapRgn::CreateMaskFromBitmapRgn

#include "ltwrappr.h"

virtual L_INT LBitmapRgn::CreateMaskFromBitmapRgn(pLBitmapMask, uStructSize)

LBitmapBase * pLBitmapMask;	pointer to an LBitmapBase object
L_UINT uStructSize;	size of structure

Creates a 1-bit mask image from the region in the associated :LBitmapBase class object's bitmap.

Parameter	Description
pLBitmapMask	Pointer to an LBitmapBase object that will be updated with the mask bitmap.
uStructSize	Size of BITMAPHANDLE structure in bytes. Use the sizeof() macro to calculate this value.

Returns

SUCCESS	The function was successful.
< 1	An error occurred. Refer to Return Codes.

Comments

A bitmap region is an area of interest within a bitmap. A bitmap can have only one region at a time, but the region can be complex, including, for example, multiple noncontiguous shapes. For more information, refer to Creating a Bitmap Region.

Functions:	LBitmapBase::CreateAlphaBitmap, LBitmapBase::SetAlpha, LBitmapRgn::SetRgnFromMask, Class Members
Topics:	Defining and Using a Bitmap Region
	Implementing Transparency
	Saving a Region

LBitmapRgn::CreateMaskFromBitmapRgn

Returns

Comments

Example