Ok, Dmitry, I got your point.

Why does the called window have to be Modal?

>Antonio,
>What you wrote makes sense. But there is one problem. The main form calls a modal form and that modal forms creates a report (in a preview mode). So, if I do not have the _screen and only the main form, the report preview will only be shown within the size of the main window/form. Therefore, in order to be able to view the report in full screen (in a preview mode), I had to go with the _screen.
>Does it make sense?
>
>>Dmitry, I'm sorry to start the reply with another question, but if it's a one-form application, why is the _Screen visible in the first place?
>>
>>The basic architecture of the single form applications I worked with is as follows:
>>
>>1. In config.fpw,
>>
>>SCREEN=OFF
>>
>>2. In main.prg
>>
>>

>>*
>>* do whatever setup is needed
>>*
>>
>>* launch the single form
>>DO FORM main.scx
>>IF TYPE("_Screen.ActiveForm") == "O"
>>  READ EVENTS
>>ELSE
>>  * deal with failure
>>ENDIF
>>
>>* done, VFP will exit now since it does not have anything more to do
>>

>>
>>3. The main.scx has ShowWindow = 2 (Top Level form), and the code of its Destroy event, in essence, is just
>>
>>

>>CLEAR EVENTS
>>

>>
>>Does this make any sense to you?
>>
>>>Hi,
>>>Another follow up to the question about a one-form application.
>>>I put the CLEAR EVENTS in the Unload method of the form. It works when I release the form first.
>>>But if, while the form is open, I click on the x (in the upper right corner; the _screen) the application wont close. I have to do it with the Task Manager.
>>>I added ON SHUTDOWN CLEAR EVENS right before the READ EVENTS line. But it does not do anything.
>>>My question:
>>>1. Can I disable (gray) the X in the upper right corner of the main window (_screen)?
>>>2. What else can I do to make the application close when user clicks on the x?
>>>
>>>TIA