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| unit Unit1;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls, Grids;
type
TIntegerList = class( TList )
private
procedure SetInteger( Index: Integer; Value: Integer );
function GetInteger( Index: Integer ): Integer;
public
procedure Add( AInteger: Integer );
function First: Integer;
function Last: Integer;
function IndexOf( AInteger: Integer ): Integer;
procedure Insert( Index: Integer; AInteger: Integer );
function Remove( AInteger: Integer ): Integer;
property Integers[Index: Integer]: Integer read GetInteger write
SetInteger; default;
end;
TForm1 = class(TForm)
StringGrid1: TStringGrid;
Button1: TButton;
procedure FormCreate(Sender: TObject);
procedure StringGrid1SelectCell(Sender: TObject; ACol, ARow: Integer;
var CanSelect: Boolean);
procedure Button1Click(Sender: TObject);
procedure StringGrid1DrawCell(Sender: TObject; ACol, ARow: Integer;
Rect: TRect; State: TGridDrawState);
procedure FormDestroy(Sender: TObject);
private
{ Déclarations privées }
public
{ Déclarations publiques }
RowsSelected:TIntegerList;
LastRowClicked:integer;
end;
var
Form1: TForm1;
implementation
{$R *.dfm}
procedure TForm1.FormCreate(Sender: TObject);
begin
RowsSelected:=TIntegerList.Create;
LastRowClicked:=-1;
end;
procedure TForm1.StringGrid1SelectCell(Sender: TObject; ACol,
ARow: Integer; var CanSelect: Boolean);
begin
LastRowClicked:=ARow;
end;
procedure TForm1.Button1Click(Sender: TObject);
var index:integer;
begin
if LastRowClicked=-1 then Exit;
index:=RowsSelected.IndexOf(LastRowClicked);
if index>-1
then RowsSelected.Delete(index)
else RowsSelected.Add(LastRowClicked);
StringGrid1.Invalidate;
end;
procedure TForm1.StringGrid1DrawCell(Sender: TObject; ACol, ARow: Integer;
Rect: TRect; State: TGridDrawState);
begin
if RowsSelected.IndexOf(ARow)>-1 then
begin
StringGrid1.Canvas.Brush.Color:=clRed;
stringgrid1.canvas.fillrect(rect);
stringgrid1.canvas.TextOut(Rect.Left,Rect.Top,stringgrid1.Cells[ACol,ARow]);
end;
end;
procedure TForm1.FormDestroy(Sender: TObject);
begin
RowsSelected.Free;
end;
//Implementation de TintegerList
procedure TIntegerList.SetInteger( Index: Integer; Value: Integer );
begin
inherited Items[Index] := Pointer( Value );
end;
function TIntegerList.GetInteger( Index: Integer ): Integer;
begin
Result := Integer( inherited Items[Index] );
end;
procedure TIntegerList.Add( AInteger: Integer );
begin
inherited Add( Pointer(AInteger) );
end;
function TIntegerList.First: Integer;
begin
//if (Count > 0) then
Result := Integers[0];
end;
function TIntegerList.Last: Integer;
begin
//if (Count > 0) then
Result := Integers[Count-1];
end;
function TIntegerList.IndexOf( AInteger: Integer ): Integer;
begin
Result := inherited IndexOf( Pointer(AInteger) );
end;
procedure TIntegerList.Insert( Index: Integer; AInteger: Integer );
begin
inherited Insert( Index, Pointer(AInteger) );
end;
function TIntegerList.Remove( AInteger: Integer ): Integer;
begin
Result := inherited Remove( Pointer(AInteger) );
end;
end. |
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