Calculates the required size of the window rectangle, based on the desired size of the client rectangle
_WinAPI_AdjustWindowRectEx ( ByRef $tRECT, $iStyle [, $iExStyle = 0 [, $bMenu = False]] )
|$tRECT||$tagRECT structure that contains the coordinates of the desired client area. This structure must be created before function call.|
|$iStyle||The window style of the window whose required size is to be calculated. Note that you cannot specify the $WS_OVERLAPPED style.|
|$iExStyle||[optional] The extended window style of the window whose required size is to be calculated.|
|$bMenu||[optional] Specifies whether the window has a menu, valid values:
True - The window has a menu.
False - The window does not has a menu (Default).
|Failure:||False, call _WinAPI_GetLastError() to get extended error information.|
Search AdjustWindowRectEx in MSDN Library.