ddhsounb.pas

来自「Delphi高级开发指南是开发程序的好帮手」· PAS 代码 · 共 53 行

unit DdhSounB;

interface

uses
  Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms,
  StdCtrls;

{$R *.DCR}

type
  TDdhSoundButton = class(TButton)
  private
    FSoundUp, FSoundDown: string;
  protected
    procedure MouseDown(Button: TMouseButton;
      Shift: TShiftState; X, Y: Integer); override;
    procedure MouseUp(Button: TMouseButton;
      Shift: TShiftState; X, Y: Integer); override;
  published
    property SoundUp: string
      read FSoundUp write FSoundUp;
    property SoundDown: string
      read FSoundDown write FSoundDown;
  end;

procedure Register;

implementation

uses MMSystem;

procedure TDdhSoundButton.MouseDown(Button: TMouseButton;
  Shift: TShiftState; X, Y: Integer);
begin
  inherited MouseDown (Button, Shift, X, Y);
  PlaySound (PChar (FSoundDown), 0, snd_Async);
end;

procedure TDdhSoundButton.MouseUp(Button: TMouseButton;
  Shift: TShiftState; X, Y: Integer);
begin
  inherited MouseUp (Button, Shift, X, Y);
  PlaySound (PChar (FSoundUp), 0, snd_Async);
end;

procedure Register;
begin
  RegisterComponents('DDHB', [TDdhSoundButton]);
end;

end.