🚀 go-pugleaf

  I'm trying to use AnimatePalette to change the colours on the  screen. I've 
  got a dialog that allows you to edit the colours in the logical palette, and 
  this works fine with the colours that I've drawn, but it doesn't work with
  a bitmap.

  Here's what I've done (using TC++ and OWL):

  1) Create a logical palette.

  2) When I set up my main window, I create a memory display context (using
     CreateCompatibleDC), create a bitmap, and select it into the memory
     display context. (This memory DC has the same number of bits-per-pixel
     and color planes as the original screen DC.)

  3) I draw onto the screen DC using SetPixel, and also using FillRectangle.
     In each case, I use PALETTEINDEX to get a COLORREF value for drawing with.

  4) I also draw onto the bitmap (via the memory DC) using exactly the same 
     function calls. I then transfer the bitmap onto the screen using BitBlt.

  5) My Paint member function does this as well (ie draws onto the bitmap,
     and draws onto the screen.)


  When I run my dialog, (which calls AnimatePalette to change the colours) the
  rectangels/pixels that I've drawn directly onto the screen change colour. But,
  the stuff that was drawn onto the bitmap doesn't change.

  Any ideas?

  P.S. I don't have the code in front of me - I may have mispelled some of the
  function names.



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Alasdair Mackintosh                             mackintosh@ug.eds.com
Unigraphics Division                            (714) 952-5698
Electronic Data Systems                         10824 Hope St, Cypress CA