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Modal & Modeless Forms
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De
25/11/1997 16:03:51
 
 
À
25/11/1997 15:08:37
Information générale
Forum:
Visual FoxPro
Catégorie:
Gestionnaire d'écran & Écrans
Divers
Thread ID:
00062210
Message ID:
00062261
Vues:
20
>>Mark
>
>Form is really an object and you can manipulate it freely, but within logical limitations. If you run chain of modal forms, i.e. open modal form from modal etc. (btw it's not very good interface idea), then you get into one such limitation. You actually built next form within previous one, and logically you cannot remove 'base' until you remove 'roof' (sorry for ambiguity). Do you know how memory stack works? Actually, new modal form is new stack floor, and you must climb down from there until you get permission to do anything outside.

Ed,
Calling a modal form from a modal form is basically just like doing recursion with the previous modal forms memory being put on the stack and isn't removed until the pointer is returned to that forms stack space. Thanks on shedding some light on modal forms. I was looking for something more descriptive than what I could find in the manuals.
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