Hi Michael,

 MR> With WinDrawBitmap is
 MR> there anyway to specify a certain color as a "mask" or a
way to facilitate
 MR> the creation of a mask with windrawbitmap?

If I understand your question correct: Yes
Here's an example which draws a bitmap either normal or in halftone mode
(bitmap foreground OR'ed with gray)

  hbm=GpiLoadBitmap(hps, NULLHANDLE, MyBitMapID, 32L, 32L);
  ulDbm_Mode = ( IsValid == TRUE ? 0 : DBM_HALFTONE );
  WinDrawBitmap(hps, hbm, NULL, &ptl, 0L, 7L, DBM_NORMAL | ulDbm_Mode);

0L and 7L are background and foreground colors. DBM halftone tells OS/2 how
the colormask should be used. There are multiple ways.

Don't forget to reset the drawing mode by

  GpiSetPattern(hps, PATSYM_DEFAULT);

Good luck, Johan.

--- The-Box Point 0.15+ PC