Pass a TTable as Parameter to another object. 
Author Message
 Pass a TTable as Parameter to another object.


I'd like to edit a field from a database, passed as parameter, in an
other object. But whenn I try to store the modifications I get an
EAccess Violation.

Example: MyEditor shows the contents of the Field MyField in MyTable.

I pass it:  MyEditor.ShowModal(self,MyTable, MyField) ;


procedure TEditor.ShowModal(Sender: TObject; tab: TTable; source:
  inherited ShowModal;
  FName := source;                      // local var
  TabName := tab;                       // local var
  RichEdit1.Lines.Assign(source);       // TRichEdit component

procedure TEditor.SaveMemo(Sender: TObject);
  if TabName.State = dsInactive then TabName.Active := True;  // ***

*** Here I get an EAccess Violation

What did I wrong? Is there another possibility to solve this problem?

Thanks for any hint!
Andreas Strebel                                      
Chemin des Cotes 1, CH-1020 Renens
Phone ++41 21 636 26 41

http://www.*-*-*.com/ ~strebel

Fri, 04 Jun 1999 03:00:00 GMT  
 Pass a TTable as Parameter to another object.


>procedure TEditor.ShowModal(Sender: TObject; tab: TTable; source:
>  inherited ShowModal;
>  FName := source;                      // local var
>  TabName := tab;                       // local var
>  RichEdit1.Lines.Assign(source);       // TRichEdit component

I may be wrong here, but isn't your variable initialized after your
screen has been displayed and exited.  Try the inherited ShowModal
after the variable setups.  (Or something like that)

Mel Rees

Sun, 06 Jun 1999 03:00:00 GMT  
 [ 2 post ] 

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