id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
927	$msg[2]  = 0x00000000 in TreeView	Dennis.Miller@…		"When using TreeView and GUIGetMsg(1) any time a items is selected the $msg array returns
 
$msg Array = '-11|0x00DE035C|0x00000000|41|105'

In the documentation it states that $msg[2] should be the control handle if I use 

$msg[2] = _GUICtrlTreeView_GetSelection($tvSysInfo)

I can set the control handle in the array.

$array[0] = 0 or Event ID or Control ID
$array[1] = The window handle the event is from
$array[2] = The control handle the event is from (if applicable)
$array[3] = The current X position of the mouse cursor (relative to the GUI window)
$array[4] = The current Y position of the mouse cursor (relative to the GUI window)
"	Bug	closed		AutoIt	3.3.0.0	None	No Bug	GUIGetMsg	Dennis.Miller@…