Shape nur im 45° Winkel bewegen

[DeddyH]

Ich habe es so gemacht:

Delphi-Quellcode:

type
  TForm1 = class(TForm)
    Shape1: TShape;
    procedure Shape1MouseDown(Sender: TObject; Button: TMouseButton;
      Shift: TShiftState; X, Y: Integer);
    procedure Shape1MouseMove(Sender: TObject; Shift: TShiftState; X,
      Y: Integer);
  private
    { Private-Deklarationen }
    FPos: TPoint;
  public
    { Public-Deklarationen }
  end;

var
  Form1: TForm1;

implementation

{$R *.DFM}

procedure TForm1.Shape1MouseDown(Sender: TObject; Button: TMouseButton;
  Shift: TShiftState; X, Y: Integer);
begin
  FPos := Point(X,Y);
end;

procedure TForm1.Shape1MouseMove(Sender: TObject; Shift: TShiftState; X,
  Y: Integer);
begin
  if ssLeft in Shift then
    begin
      Shape1.Left := Shape1.Left + (X - FPos.X);
      Shape1.Top := Shape1.Top + (X - FPos.X);
    end;
end;