>Hi Peter.
>
>You could try something like
>SKIP FOR !Type("_Screen.ActiveForm.SomeProp") == "L" and _Screen.ActiveForm.SomeProp
>
>That should disable the item if there is no active form, the active form does not have a logical property by the name specified, or the property is set to True.
>
>Ian Simcock.

Hi Ian,

Your idea (and Gregory's, which is essentially the same) indeed appears to prevent the error condition. The funny thing is that there may be a case of a False Positive and that this doesn't matter anyway. This is the situation that there may be another window active that also has the same property and thus causes an actual test of that property, which may lead to an incorrect enabling/disabling of the menu-item. But it won't matter, because the form is inactive and no menu-item on the form can be selected. When activating the form, the skip-for expressions are re-evaluated and then it will be correct evaluations.

I guess it could be simplified with a generic function:

SKIP FOR SkipFor( '_vfp.activeform.SomeProp', .T. )

FUNCTION SkipFor( tcProp, tuTrueCondition )
   RETURN iif( type( tcProp ) = 'U', .T., eval( tcProp ) = tuTrueCondition )