WindowImageOp blank white rect?

Posted by Fiendish on Fri 19 Nov 2010 10:44 PM — 4 posts, 12,591 views.

Fiendish USA Global Moderator Fri 19 Nov 2010 10:44 PM #0

Trying to tile an image.

This works:


   if room.textimage ~= nil then
      local iwidth = WindowImageInfo(win,room.textimage,2)
      local iheight= WindowImageInfo(win,room.textimage,3)
      local x = 0
      local y = 0

      while y < config.WINDOW.height do
        x = 0
        while x < config.WINDOW.width do
           WindowDrawImage (win, room.textimage, x, y, 0, 0, 1)  -- straight copy
           x = x + iwidth
        end
        y = y + iheight
      end
end

This does not:


      WindowImageOp(win, miniwin.image_fill_rectangle, 0,0,0,0, 0x000000, miniwin.pen_null, 1, 0x000000, room.textimage)

All I get is a blank white rectangle. Is that Wine screwing with me again?

Nick Gammon Australia Forum Administrator Fri 19 Nov 2010 11:10 PM #1

Possibly. A test, but not with your file (whatever that was) seems to indicate it works under XP.

The function uses CreatePatternBrush which conceivably doesn't work properly under Wine. A Google for that leads to inconclusive results. Perhaps your technique of manually tiling will have to do. It seems fast enough anyway.

Nick Gammon Australia Forum Administrator Fri 19 Nov 2010 11:17 PM #2

Testing under my copy of Wine with my test image, worked however.

Nick Gammon Australia Forum Administrator Sat 20 Nov 2010 12:17 AM #3

A few more rather strange tests seem to show that it is dependent on the image file. You seem to be using 8-bit images, the ones that work are 24 or 32-bit images. Try resaving using some sort of image manipulation program, and you might get it to work.