Author: Tomas Rutkauskas

How to make the scrollbar of a TStringGrid show a proportional thumb

Answer:

1   procedure TForm1.Button1Click(Sender: TObject);
2   var
3     info: TScrollInfo;
4   begin
5     fillchar(info, sizeof(info), 0);
6     with info do
7     begin
8       cbsize := sizeof(info);
9       fmask := SIF_ALL;
10      GetScrollInfo(stringgrid1.handle, SB_VERT, info);
11      fmask := fmask or SIF_PAGE;
12      nPage := 5 * (nmax - nmin) div stringgrid1.rowcount;
13      {whatever number of cells you consider a "page"}
14    end;
15    setscrollinfo(stringgrid1.handle, SB_VERT, info, True);
16  end;