INT 15 U - DESQview v2.50+ - ???
AX = DE29h
BX = 0001h
DX = segment of window handle
Return: CF clear if successful
AX = ???
DX = ???
CF set on error
Note:   DESQview 2.50-2.52 are distributed as part of DESQview/X v1.0x.


15DE29BX0001 - DESQview v2.50+ - ???