Internal-wm/rootless observations

[Alexander Gottwald <alexander dot gottwald at s1999 dot tu-chemnitz dot de>]

Hi all,

After many days of debugging the internalwm code i finally found
the actual problem. 

The rootless code wants the pixmap buffer aligned to 32bit boundaries.
If the window width is odd and the xserver is run in 16bpp mode then
this is no guaranteed and this leads the strange errors.

Internalwm is only usable in 32bit mode.

This is not an actual problem. The goal should be anyway to work 
with 32 bit visuals only and have real transparancy. I'm still 
searching for a clean method to blit 32 bit bitmaps to 16 bit ones.
The simple aproach of allocating the bitmap with

CreateCompatibleBitmap()
bitmap->width = width
bitmap->height = height
bitmap->bpp = dbBPP
CreateDIBSection()

BitBlt(windowdc, ..., shadowdc, ...)

was not working properly. Is CreateCompatibleBitmap reusing the 
DC from the screen? How can I create a 32bit bitmap if the desktop
is running in 16bit? 

Anyway. Setting the bitmap depth to 32bit fixed the crashes I had 
the last weeks with rootless but garbled the output. So the goal is
to have everything inside the server running at 32bit and let GDI do 
the colorspace translation from 32 to 16 or 24 bit.

@zakki: I've found this in the code

  if (winIsInternalWMRunning(pScreenInfo))
    winAdjustXWindow (pWin, hwnd);

  winMWExtWMMoveResizeXWindow (pWin,

shouldn't that be 

  if (winIsInternalWMRunning(pScreenInfo))
    winAdjustXWindow (pWin, hwnd);
  else
    winMWExtWMMoveResizeXWindow (pWin,

bye
	ago 
-- 
 Alexander.Gottwald@s1999.tu-chemnitz.de 
 http://www.gotti.org           ICQ: 126018723