播放一个wav文件

use mmsystem;
SndPlaySound('hello.wav',SND_FILENAME or SND_SYNC)

///////////////////////////////////
unit PlaySnd1;

interface

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

type
  TForm1 = class(TForm)
    PlaySndFromFile: TButton;
    PlaySndFromMemory: TButton;
    PlaySndbyLoadRes: TButton;
    PlaySndFromRes: TButton;
    procedure PlaySndFromFileClick(Sender: TObject);
    procedure PlaySndFromMemoryClick(Sender: TObject);
    procedure PlaySndFromResClick(Sender: TObject);
    procedure PlaySndbyLoadResClick(Sender: TObject);
  private

{ Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.DFM}

{$R snddata.res}

uses MMSystem;

procedure TForm1.PlaySndFromFileClick(Sender: TObject);
begin
  sndPlaySound('hello.wav',
                SND_FILENAME or SND_SYNC);
end;

procedure TForm1.PlaySndFromMemoryClick(Sender: TObject);
var
  f: file;
  p: pointer;
  fs: integer;
begin
  AssignFile(f, 'hello.wav');
  Reset(f,1);

fs := FileSize(f);
  GetMem(p, fs);
  BlockRead(f, p^, fs);
  CloseFile(f);
  sndPlaySound(p,
               SND_MEMORY or SND_SYNC);
  FreeMem(p, fs);
end;

procedure TForm1.PlaySndFromResClick(Sender: TObject);
begin
  PlaySound('HELLO',
            hInstance,
            SND_RESOURCE or SND_SYNC);
end;

procedure TForm1.PlaySndbyLoadResClick(Sender: TObject);
var
  h: THandle;
  p: pointer;
begin
  h := FindResource(hInstance,
                    'HELLO',

'WAVE');
  h := LoadResource(hInstance, h);
  p := LockResource(h);
  sndPlaySound(p,
               SND_MEMORY or SND_SYNC);
  UnLockResource(h);
  FreeResource(h);
end;

end.