>>Hi,
>>
>>I wrote (or copied it from somewhere) the code below 10 years ago. And now I don't remember it's purpose. This code is called from the method, right after the READ EVENTS, when application is being closed.
>>What is the purpose of closing all forms when a user wants to close the application?
>>I tried to comment this code and only issue ON SHUTDOWN, after READ EVENTS, and I get no error when some forms are still open. The ON SHUTDOWN seem to close these forms anyways.
>>

>>
>>	LOCAL lnForms, i, llDone
>>	lnForms = _screen.formcount
>>	FOR i = lnForms to 1 STEP -1
>>
>>		IF TYPE("_SCREEN.Forms(i)") <> "O" OR ISNULL( _SCREEN.Forms(i) )
>>			LOOP 
>>		ENDIF 
>>
>>		IF PEMSTATUS(_SCREEN.Forms(i), 'QueryUnload', 5) 
>>      		    llDone = _SCREEN.Forms(i).QueryUnload() 
>>      		   IF !llDone
>>      			RETURN .F.
>>      		  ENDIF 
>>      	      ENDIF 
>> 		_screen.Forms(i).Release
>>	ENDFOR
>>

>>
>>Thank you in advance for any input
>
>If you have a modal form open or a report preview, or a messagebox, this could all be fun. If the forms (objects) get's closed the wrong order you might "close" a form with code waiting for a modal form. The modal one close second, proceeds with the code and you got a lot of strange errors, because THIS and THISFORM, open tables etc the code is expecting are gone. For a long time I even disabled ALT+F4 (ON SHUTDOWN *) etc at all. Now I do a lot of loops and checks to have the forms shutting down in the right order. This might be complex.

Thank you for your input. As I wrote in my message to Dragan, the code above will work in majority of the cases. But since I will include it in a TRY/CATCH, there could be a time when the code will not run. And in this case, the application will try to close with some forms being open.
I will test a case with a messagebox() window being open and at the same time trying to close the application.