Previewform on Multidisplay with different DPI settings

microtronx

Hi, we have a very crazy problem with Delphi 10.3 or 10.4 with following setup:

1. Screen with 100%
2. Screen with 125%

Mainform is started at Monitor 125%. Opening Previewform from Reportbuilder is very crazy. form is i.e. 800*500px but the area where the report is shown is only 400*250px (round about) and is showing scrollbars ....

Can you please check this asap?

microtronx

Here's the image:

microtronx

Problem is in ppPreview.pas in Line 1063

Viewer.Top := 2;
Viewer.Left := 2;
Viewer.Height := Viewer.Parent.Height-4;
Viewer.Width := Viewer.Parent.Width-4;
Viewer.Anchors := [akLeft, akTop, akRight, akBottom];

I removed these lines and replaced with following lines:

Viewer.AlignWithMargins:=true;
Viewer.Margins.Top:=2;
Viewer.Margins.Left:=2;
Viewer.Margins.Right:=2;
Viewer.Margins.Bottom:=2;
Viewer.Align := alclient;

Now the problems are solved!

nardmoseley

Hi Yusuf,

Please provide steps to reproduce/test this behavior. I tried setting to 125% and calling Report.Print, but the preview form shoes correctly.

microtronx

Hi Nard, i have nothing special setup. Possible that loading position and formsize beforeshow is the problem but changing your code so the viewer always do alClient with Margins solves that problem.