INT 15 U - DESQview v2.50+ - ???
AX = DE29h
BX = 0003h
DX = segment of window handle
Return: CF clear if successful
???
CF set on error
Note:   DESQview 2.50-2.52 are distributed as part of DESQview/X v1.0x.


15DE29BX0003 - DESQview v2.50+ - ???