Question

Closing a Form in VFP 9

Asked by: leemarc

I am creating a form that during the init event checks for parameter and based on that information is to continue of simply close.
The code works - however the form will NOT close without intervention form the user.
Snippet is attached.
How do I close the form without user intervention.
Read events and Clear events is handled outside the form int eh main calling program so I don't want to issue a clear events here

PARAMETERS cAlias as string, iConnHandle as Integer, cCatalogName as string
* There MUST be a cursor or table open and present when 
*	we get this far. The cursor should have enought data and matching fields to 
*	fill the grid when it comes time
 
* Parameters check
* 1st did we pass a cursor name - if not set it to blank so the used test fails
IF VARTYPE(cAlias) <> "C" THEN
	cAlias = ""
endif
 
* Test for cursor 
IF USED(cAlias) then
	* call the grid now
	thisform.calias = cAlias
	thisform.updategrid()
	
ELSE
	* we have a problem since we need to cusror for this grid form to function
	*	we need to simply return now - we can log an error - but without an email
	thisform.release()
endif

                                  
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Asked On
2008-09-17 at 07:52:19ID23738800
Topic

FoxPro Database

Participating Experts
1
Points
50
Comments
4

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Answers

 

by: tusharkanvindePosted on 2008-09-17 at 08:21:41ID: 22499712

To close a form from the init event give RETURN .F. instead of thisform.release()

 

by: leemarcPosted on 2008-09-17 at 08:40:26ID: 22499973

Alomst perfect - it works just fine, however, what if I wanted to return somthing else that a boolean value

 

by: tusharkanvindePosted on 2008-09-17 at 08:57:49ID: 22500257

You can't do that with this method. To return something from the form, you have to put it in the unload event. The unload event does not get called if you put RETURN .F. in the init event.

What you can do is create a flag ToExit as a property of the form

IF USED(cAlias) then
        * call the grid now
        thisform.calias = cAlias
        thisform.updategrid()
        thisform.addproperty('ToExit',.F.)
       
ELSE
        * we have a problem since we need to cusror for this grid form to function
        *       we need to simply return now - we can log an error - but without an email
        thisform.addproperty('ToExit',.T.)
endif

Then in the activate event or the show event put
if thisform.ToExit
  thisform.release
  nodefault
endif

 

by: leemarcPosted on 2008-09-17 at 09:21:44ID: 31497348

pefect - thanks - it will become part of all forms that I need this type of testing

20120131-EE-VQP-002

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