Category: <b>DESQview/TopView and Quarterdeck programs</b>
<p>
<pre><b>INT 15 - TopView - SEND MESSAGE - "OPEN" - OPEN OBJECT</b>

	AH = 12h
	BH = 0Ch
	BL = object
	    00h handle is DWORD on top of stack
		window:	  fill with given character from scroll origin to end
		keyboard: attach to a window
		timer:	  open
		pointer:  start taking input for window
		panel:	  associate with a panel file
	    01h fill task's default window with given char from scrl org to end
	    02h open given task's mailbox for input (task's handle on stack)
	    03h open current task's mailbox
	    04h attach a KEYBOARD to a window (handle on top of stack)
	    05h attach task's default KEYBOARD to a window
	    06h open a task's OBJECTQ (task's handle on top of stack)
	    07h open current task's OBJECTQ
	    0Ch (DV 2.26+) fill def window of task owning handle on top of stck
	    0Dh (DV 2.26+) fill default window of parent of current task
	 STACK: (if window)   DWORD character to fill with
		(if keyboard) DWORD handle of window to attach to
		(if pointer)  DWORD handle of window to attach to
		(if panel)    DWORD length of filename or resident panel
			      DWORD address of filename or resident panel
		(otherwise)   nothing
Return: STACK popped
Notes:	if first byte of panel file name is 1Bh, then the "name" IS a panel
	if first two bytes of panel file "name" are C0hC3h, then the "name" IS
	  the panel file
	result code of open may be retrieved with STATUS message
	logical cursor is left at scroll origin after filling window
	the task opening a mailbox becomes its owner, and the only task allowed
	  to read the mailbox
	messages are only sent to a pointer object when the mouse is positioned
	  in the window to which the pointer has been attached
	there is no need to explicitly open a timer object, as ADDTO and WRITE
	  messages automatically open the timer
SeeAlso: AH=12h/BH=0Dh,AH=12h/BH=14h"LOCK"
</pre>