windowp

windowp(
g_object 
) 
=> t / nil

Checks whether the specified object is a valid window.

This function is not available in Concept SKILL. For more information, see Design Entry HDL–SKILL Routines.

g_object

Object you want to check.

`t`	g_object is a valid window.
`nil`	g_object is not a valid window.

windowp( myWindowID )