Gene Wirchenko wrote:
Dear Vixens and Reynards:
The scenario: you have a form with a grid on it. The user closes
the form. There is a validation error, and in that case, you want the
form to not close.
My solution was to add a property to the form called .griderror.
In the controls that I use in the grid, the validation starts by
setting .griderror to .f. and then does the validation. If there is
an error, it sets .griderror to .t.. The form's .queryunload checks
if .griderror is .t.. If it is, then the form close is cancelled (or
the exit is confirmed, etc.).
My forms work slightly differently. When I start an edit (or add)
session, nothing is checked until they want to either save or cancel the
edit. If they want to save you do your validation and put up messages
for any errors you find. If no errors save as normal. If they want to
cancel the edit then you put up a confirm "Abandon changes?" and they
can exit or not. If they exit nothing is saved and you are back to
before the edit. One reason I do it this way is that my app has a
"seize" timer running to take control of the app, so if I seize the
system I want people out right away even if they are editing. When that
happens the form will unload without the "Abandon changes?" prompt.
I don't use .queryunload at all. Just check your .griderror after your
validation as to whether they can save or not.
HTH
Peter
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