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在private处输入：
    { Private declarations }
         FCanResize,FisDown:Boolean;
    FDetax,FDetaY:Integer;
    FP,FOldP:TPoint;

 

{==============================================}

 

procedure TForm1.Image1MouseDown(Sender: TObject; Button: TMouseButton;
  Shift: TShiftState; X, Y: Integer);
begin
FisDown:=True;
GetCursorPos(FOldP);
end;

 

procedure TForm1.Image1MouseMove(Sender: TObject; Shift: TShiftState; X,
  Y: Integer);
begin
if not FisDown then exit;
GetCursorPos(Fp);
FDetaX:=Fp.x-Foldp.x;
FDetaY:=FP.y-FOldP.y;
SetBounds(Left+FDetaX,Top+FDetaY,Width,Height);
GetCursorPos(FOldP);
end;

 

procedure TForm1.Image1MouseUp(Sender: TObject; Button: TMouseButton;
  Shift: TShiftState; X, Y: Integer);
begin
FisDown:=false;
end;