Flickering on tppviewer

rbuser

How can I avoid flickering on a custom TppViewer?

The flickering is really bad when i scroll the contents of the viewer...

Thank you in advance

Yiannis Ioannidis

--

digitalmetaphors

You can generate the entire report and cache the pages so the report doesn't
generate the pages as you preview them.

For a OnePass report, try this:

...
uses
ppTypes, ppViewr, ppDevice;

procedure TForm1.Button1Click(Sender: TObject);
var
lDevice: TppDevice;
begin
lDevice := TppDevice.Create(Self);
lDevice.PageSetting := psAll;
lDevice.Publisher := ppReport1.Publisher;
ppReport1.CachePages := True;
ppReport1.PrintToDevices;
ppReport1.Print;
end;


Cheers,

Jim Bennett
Digital Metaphors

rbuser

The flickering problem happens when i use the mouse to scroll the current
page left or right..

digitalmetaphors

We've tested this here and it is working fine on our machines. We'll run it
on a slower performance machine to see if there is any further optimizations
we can add.


Cheers,

Jim Bennett
Digital Metaphors

rbuser

"Yiannis Ioannidis" wrote in message

rbuser

Well regarding the video card, it an Intel 82815 Graphics Controler (on
board), and i am using a Pentium III 800 MHz computer, with windows 2000.

Anyway i did the following "trick" and seems that the problem has been
solved..
I ceated a descendant of tppviewer and i overrided the loaded method where I
added the following line of code
ScrollBox.DoubleBuffered:=True;

I don't know how much memory consuming is this solution but the scrollbox
doen't flicker any more

Yiannis