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How to draw lines over a TStringGrid Turn on/off line numbers in source code. Switch to Orginial background IDE or DSP color Comment or reply to this aritlce/tip for discussion. Bookmark this article to my favorite article(s). Print this article
05-Nov-02
Category
VCL-General
Language
Delphi 2.x
Views
106
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Publisher:
DSP, Administrator
Reference URL:
DKB
			Author: Tomas Rutkauskas

I have a TStringGrid with objects put in big coloumns of 4 normal columns. How can 
I draw a black line from top to bottom over the gray line that the grid itself 
draws?

Answer:

Handle the OnDrawCell event for the grid. If the cell you are asked to draw is in 
the column in question you draw the part of the line that crosses the cell:
1   
2   procedure TForm1.StringGrid1DrawCell(Sender: TObject; ACol, ARow: Integer;
3     Rect: TRect; State: TGridDrawState);
4   begin
5     if (aCol = 1) and not (gdFixed in State) then
6     begin
7       with (sender as tstringgrid).canvas do
8       begin
9         Pen.Color := clBlack;
10        Pen.Width := 2;
11        Pen.Style := psSolid;
12        MoveTo(rect.right - 1, rect.top);
13        Lineto(rect.right - 1, rect.bottom);
14      end;
15    end;
16  end;


			
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