"Rob Kennedy" <me3@privacy.net> Wrote
$1@newsgroups.borland.com...
> Under what circumstances would ViewRecordDlg already be assigned when the
> initialization section runs? You can probably remove that "Assigned"
> check. At most, I'd use an assertion:
>
> Assert(not Assigned(ViewRecordDlg));
>
Because there are many forms will use ViewRecordDlg, and I want it to be
created only one time and alive(not to be destoryed by any form) to keep
all values inside for all other form while calling it. Also I don't want add
it to project to be auto-created. Create it in initialization will make
things easy, all I have to do is to use its unit.
Is there any way I can get the same mechanism? Automatically creating
ViewRecordDlg just after application begin and destorying it just before
application terminated?
> The solution is to not handle the messages application-wide. Handle them
> at the window level, which is the same as how they arrive. Override the
> form's WndProc method. Handle the messages there. You can see an example
> with TCustomForm.
Thanks, I will take a good look on it. For now, I check Msg.Hwnd to
solve my problem.
if (Msg.message= WM_RefreshPaintBox) then
begin
Handled:=true;
if (Msg.hwnd=Application.Handle) then
pbEzf.Refresh;
end;
The Paintbox now refresh only 1 time. : )
Thanks a lot.
Daniel
