unit Newpanel;

interface

uses WinTypes, Classes, Controls, StdCtrls, ExtCtrls;

type

 tHotSpotClickEvent = procedure(Sender: tObject;

  Button: tMouseButton;

  Shift: tShiftState) of object;

 TNewPanel = class(tPanel)

 private

  fHotSpotClick: tHotSpotClickEvent;

  fHotSpot: tRect;

  fInHotSpot: Boolean;

  function GetHotSpot: Word;

  function GetHotSpotLeft: Word;

  function GetHotSpotWidth: Word;

  function GetHotSpotHeight: Word;

  procedure SetHotSpot(Value: Word);

  procedure SetHotSpotLeft(Value: Word);

  procedure SetHotSpotWidth(Value: Word);

  procedure SetHotSpotHeight(Value: Word);

 protected

  procedure Paint; override;

  procedure MouseDown(Button: tMouseButton; Shift: tShiftState; X, Y: Integer);

  override;

  procedure MouseUp(Button: tMouseButton; Shift: tShiftState; X, Y: Integer);

  override;

 public

  procedure Click; override;

  property HotSpot: tRect read fHotSpot write fHotSpot;

 published

  property hs: Word read GetHotSpot write SetHotSpot;

  property hsLeft: Word read GetHotSpotLeft write SetHotSpotLeft;

  property hsWidth: Word read GetHotSpotWidth write SetHotSpotWidth;

  property hsHeight: Word read GetHotSpotHeight write SetHotSpotHeight;

  property OnHotSpot: tHotSpotClickEvent read fHotSpotClick write

  fHotSpotClick;

 end;

procedure Register;

implementation

uses WinProcs, Graphics;

procedure Register;

begin

 RegisterComponents('Custom', [TNewPanel]);

end;

procedure TNewPanel.MouseDown(Button: tMouseButton;

 Shift: tShiftState;

 X, Y: Integer);

begin

 if PtInRect(fHotSpot, Point(X, Y)) and

  Assigned(fHotSpotClick) then

  fInHotSpot := True;

 inherited MouseDown(Button, Shift, X, Y);

end;

procedure TNewPanel.MouseUp(Button: tMouseButton;

 Shift: tShiftState;

 X, Y: Integer);

begin

 inherited MouseUp(Button, Shift, X, Y);

 if fInHotSpot then

 begin

  if Assigned(fHotSpotClick) then

  fHotSpotClick(Self, Button, Shift);

  fInHotSpot := False;

 end;

end;

procedure TNewPanel.Click;

begin

 if not fInHotSpot then

  inherited Click;

end;

procedure TNewPanel.Paint;

var

 OldStyle: tPenStyle;

begin

 inherited Paint;

 if csDesigning in ComponentState then

 begin

  OldStyle := Canvas.Pen.Style;

  Canvas.Pen.Style := psDash;

  Canvas.Rectangle(HotSpot.Left, HotSpot., HotSpot.Right, HotSpot.Bottom);

  Canvas.Pen.Style := OldStyle;

 end;

end;

procedure TNewPanel.SetHotSpot(Value: Word);

begin

 fHotSpot.Bottom := fHotSpot.Bottom + Value - fHotSpot.;

 fHotSpot. := Value;

 Paint;

end;

procedure TNewPanel.SetHotSpotLeft(Value: Word);

begin

 fHotSpot.Right := fHotSpot.Right + Value - fHotSpot.Left;

 fHotSpot.Left := Value;

 Paint;

end;

procedure TNewPanel.SetHotSpotWidth(Value: Word);

begin

 fHotSpot.Right := fHotSpot.Left + Value;

 Paint;

end;

procedure TNewPanel.SetHotSpotHeight(Value: Word);

begin

 fHotSpot.Bottom := fHotSpot. + Value;

 Paint;

end;

function TNewPanel.GetHotSpot: Word;

begin

 Result := fHotSpot.

end;

function TNewPanel.GetHotSpotLeft: Word;

begin

 Result := fHotSpot.Left;

end;

function TNewPanel.GetHotSpotWidth: Word;

begin

 Result := fHotSpot.Right - fHotSpot.Left;

end;

function TNewPanel.GetHotSpotHeight: Word;

begin

 Result := fHotSpot.Bottom - fHotSpot.;

end;

end.