Cancel / Close button management

rbuser

We embedded a print preview plugin inside one of our own forms that is
itself embedded inside a "forms manager" framework, and the forms
manager has its on UI for closing its hosted forms.

So I want to be able to hide the button on the print preview plugin
AFTER its changed from a Cancel button to a Close button (pretty sure it
has that dual functionality). However, I can't find the right event to
do this. I've played with TppPreivew.EventNotify, but it doesn't
give me what I need. Any ideas?

TIA Paul

nicocizik

Hi Paul,

The built-in previewer uses the PrintStateChangeEvent routine to control
the Cancel/Close button. In your own preview plugin, you could override
this routine and tailor it to your needs.

From the viewer, you should be able to use the OnEndGenerate event to
manipulate anything after the report has finished generating.

rbuser

Thanks Nico, that worked a treat


procedure TnxPreviewPlugin.PrintStateChangeEvent(Sender: TObject);
begin
inherited;

if not viewer.Busy then
CancelButton.visible := False;

end;