Mega Code Archive
Insert-delete a row in a tstringgrid
<![CDATA[
// For this tip you need a StringGrid1 and a Button1.
// Für diesen Tip braucht man ein StringGrid1 und einen Button1.
{...}
type
TForm1 = class(TForm)
StringGrid1: TStringGrid;
Button1: TButton;
procedure Button1Click(Sender: TObject);
private
{...}
public
{...}
end;
type
TStringGridHack = class(TStringGrid)
protected
procedure DeleteRow(ARow: Longint); reintroduce;
procedure InsertRow(ARow: Longint);
end;
var
Form1: TForm1;
implementation
{$R *.DFM}
procedure TStringGridHack.DeleteRow(ARow: Longint);
var
GemRow: Integer;
begin
GemRow := Row;
if RowCount > FixedRows + 1 then
inherited DeleteRow(ARow)
else
Rows[ARow].Clear;
if GemRow < RowCount then Row := GemRow;
end;
procedure TStringGridHack.InsertRow(ARow: Longint);
var
GemRow: Integer;
begin
GemRow := Row;
while ARow < FixedRows do Inc(ARow);
RowCount := RowCount + 1;
MoveRow(RowCount - 1, ARow);
Row := GemRow;
Rows[Row].Clear;
end;
procedure TForm1.Button1Click(Sender: TObject);
begin
// Insert Row, Zeile hinzufügen
TStringGridHack(StringGrid1).InsertRow(1);
// Remove Row, Zeile entfernen
TStringGridHack(StringGrid1).DeleteRow(2);
end;
end.
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