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Сначала нужно обработать событие OnDrawCell компонента TStringGrid:
procedure TForm1.StringGrid1DrawCell(Sender: TObject; ACol, ARow: Integer;
Rect: TRect; State: TGridDrawState);
var
i, x, y: Integer;
begin
if gdFixed in State then
Exit;
if ARow > 1 then
Exit;
{Draw row 1 with text from cell 1,1 spanning all cells in the row}
with sender as TStringGrid do
begin
{Extend rect to include grid line on right, if not last cell in row}
if aCol < Pred(ColCount) then
Rect.Right := Rect.Right + GridlineWidth;
{Figure out where the text of the first cell would start
relative to the current cells rect}
y := Rect.Top + 2;
x := Rect.Left + 2;
for i:= 1 to aCol - 1 do
x := x - ColWidths[i] - GridlineWidth;
{Paint cell pale yellow}
Canvas.Brush.Color := $7FFFFF;
Canvas.Brush.Style := bsSolid;
Canvas.FillRect( Rect );
{Paint text of cell 1,1 clipped to current cell}
Canvas.TextRect( Rect, x, y, Cells[1, 1] );
end;
end;
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По созданию окна изобразим следующее
procedure TForm1.FormCreate(Sender: TObject);
var
i, k: Integer;
begin
with StringGrid1 do
begin
cells[1, 1] := 'A rather long line which will span cells';
for i:= 1 to colcount-1 do
for k:= 2 to rowcount -1 do
cells[i,k] := Format( 'Cell[%d, %d]', [i, k]);
end;
end;
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Текст в ячейке StringGrid если не помещается переносится на следующую ячейку