Thanks Michael Duffy for your msg about Re: hpsMemory Bitmap ques, on
Wednesday, 11-16-1994!

Actually what you want to do is to create a memory device context, use
that to create a presentation space for that device context, then
create a bitmap of the size you want, and associate it with the PS.
Then you can draw into the PS just like drawing to the screen except
that the output is drawn to the bitmap.

Here are the calls to make

   __hdcShadow = DevOpenDC(pgthrCaller->habThread()
                           , OD_MEMORY
                           , "*"
                           , 4L
                           , apchDevData
                           , 0)

   __hpsShadow = GpiCreatePS(  pgthrCaller->habThread()
                               , __hdcShadow
                               , &szlHDC
                               , PU_PELS | GPIT_MICRO | GPIA_ASSOC)

   // Create an unitialized bitmap
    // .... __pbmhpShadow was set up here, but left it out
   __hbmShadow = GpiCreateBitmap( __hpsShadow
                                   , (BITMAPINFOHEADER2*)__pbmphShadow
                                   , 0L
                                   , NULL
                                   , NULL);

   if (GpiSetBitmap(__hpsShadow, __hbmShadow) == (HBITMAP)BMB_ERROR)
   {
   }


Keep in mind that these calls were pulled out of some of my existing
stuff and most of the grunt work of making sure everything went ok and
setting up the data for the calls was cut out to avoid posting a mega
message.

But, once you have done this, you can draw into __hpsShadow just like
any other PS. When you are done, then save the bitmap away or do
whatever you want with it.

___
 X KWQ/2 1.2b X If at first you don't succeed, put it out for beta test (KWQ Beta

--- Maximus/2 2.02