WPARENT( ) Function
Returns the name of the parent window of the active or specified window.
WPARENT([WindowName])
Return Value
Character
Parameters
- WindowName
Specifies a window whose parent window name WPARENT( ) returns. WPARENT( ) returns the empty string if the specified window doesn't have a parent window. If you omit WindowName, WPARENT( ) returns the name of the parent window of the active output window. WPARENT( ) returns the empty string if the active output window doesn't have a parent window.
Remarks
You can use DEFINE WINDOW to create a window and place it in a parent window. The child window becomes integrated with its parent window. For example, a child window defined and activated inside a parent window can't be moved outside the parent window. If the parent window is moved, the child window moves with it.
Example
The following example defines a parent and child window. It then uses WPARENT( ) to identify which window is the parent.
CLEAR ALL
CLEAR
DEFINE WINDOW wParent ;
FROM 1,1 TO 20,20 ;
TITLE 'wParent' && Parent window
ACTIVATE WINDOW wParent
DEFINE WINDOW wChild ;
FROM 1,1 TO 10,10 ;
TITLE 'wChild' ;
IN WINDOW wParent && Child window
ACTIVATE WINDOW wChild
WAIT WINDOW 'The parent window is ' + WPARENT( )
RELEASE WINDOW wParent, wChild