Wait for a process to complete

[d.bernaert]

Hi,

I have the following problem.

I have a grid with mail messages on the left, on the right a preview of the mail is shown.

When the user scrolls (i use the onselectionchange event of the grid), a procedure is called to create the preview.

This can take some millisecons because the eml file needs to be read by an external library and a html file with attachments is generated.

When the user scrolls fast in the list, i sometimes get an error message that the html file is not accessible by the uniURLFrame.

This is the procedure that is run:

if VwMessages.FieldByName('Message_type').AsInteger <> 1
then begin
             AUrlMail := Utils.Generate_mail(Destination, False);
              PreviewFrame.URL := AUrlMail;
          end
 else PreviewFrame.URL := '';

The procedure that generates the html file with the attachments is Generate_mail.

Is there a way to show a mask with onselectionchange or something?

Thx

[Sherzod]

53 minutes ago, d.bernaert said:

When the user scrolls (i use the onselectionchange event of the grid), a procedure is called to create the preview.

Hi,

Does he navigate the grid using the keyboard?

[d.bernaert]

Yes,

That is the main problem, he can scroll very fast in the list.

[Wilton Ergon]

try use showmask('wait') before Generate_mail and after hidemask