Relational size/positioning of Child windows

[GEOSoft]

Here is one that I found rather helpful today. Someone else may also be able to get some use of it. Just uncomment the example in the header to run the demo,

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;
;===============================================================================
; Function Name:   _GUISetOffsetSize()
; Description:   Set the dimension of a window by referencing the size of another window
; Syntax:         
; Parameter(s): $hWnd - Window to reference
;                 $iDim - If 0 (default) then returns the width else returns the height
;                 $iCurr - Add to the dimmension value (Default = 0).
;                          For use when you need to add the dimensions of 2 forms together
; Requirement(s):  
; Return Value(s): - Success - Returns the dimension specified by $iDim 
;                 - Failure 
; Author(s):       George (GEOSoft) Gedye
; Modification(s): 
; Note(s):  
; Example(s):   Below
#cs
   #include <WindowsConstants.au3>
   Opt ("GUICoordMode", 2)
   $Parent = GUICreate("Parent window", 400, 250)
   GUISetState()
   $W = _GUISetOffsetSize($Parent)
   $H = _GUISetOffsetSize($Parent, 1)
   $Child = GUICreate("Child Window", $W, $H -210, 0, 0, $WS_CHILD + $WS_DLGFRAME, -1, $Parent)
   GUISetBkColor(0xFF0000)
   $Y = _GUISetOffsetSize($Child,1)
   $H -= $Y
   $Child2 = GUICreate("Child Window 2", $W, $H, 0, $Y, $WS_CHILD + $WS_DLGFRAME, -1, $Parent)
   GUISetBKColor(0x0000FF)
   GUISetState(@SW_SHOW, $Child)
   GUISetState(@SW_SHOW, $Child2)
   While 1
      If GUIGetMsg() = -3 Then Exit
   Wend
#ce
;===============================================================================

Func _GUISetOffsetSize($hWnd,$iDim = 0,$iCurr = 0)
   If NOT IsHWnd($hWnd) Then Return SetError(1)
   If $iDim <> 1 Then $iDim = 0
   Local $sArray = WinGetClientSize($hWnd)
   If $iDim = 0 Then Return $sArray[0] + $iCurr
   Return $sArray[1] + $iCurr
EndFunc  ;<==> _GUISetOffsetSize()
;

Edited September 9, 2008 by GEOSoft

[GEOSoft]

Updated with error handling and a new function name.

This function is for use when you can't use WinGetPos() for child windows such as when you have a relational setting for

Opt("GUICoordMode"). WinGetPos() returns screen coordinates which are no good for settings that are relational to the client area of a parent GUI.