getwritemask(3G)					      getwritemask(3G)

NAME    [Toc]    [Back]

     getwritemask - returns the	current	writemask

C SPECIFICATION    [Toc]    [Back]

     long getwritemask()

PARAMETERS    [Toc]    [Back]

     none

FUNCTION RETURN	VALUE
     The returned value	of this	function is the	current	writemask for the
     current drawing mode.

DESCRIPTION    [Toc]    [Back]

     getwritemask returns the current writemask	of the current drawing mode.
     Each bit in the writemask corresponds to an available bitplane. Thus, bit
     2 describes bitplane 2 and	so on. When a bit is set to zero in the
     writemask,	the corresponding bitplane is read only. This routine is
     undefined in RGB mode.

SEE ALSO    [Toc]    [Back]

     RGBwritemask, writemask, drawmode

NOTE    [Toc]    [Back]

     This routine is available only in immediate mode.


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