implementation uses mmsystem;{$R *.dfm} function SoundCardExist:boolean; begin result:=WaveOutGetNumDevs >0; end;procedure TForm1.Button1Click(Sender: TObject); begin if SoundCardExist then showmessage('存在声卡'); end;
function SoundCardInstalled: Boolean; begin Result:= WaveOutGetNumDevs >0 end;
uses mmsystem;{$R *.dfm}
function SoundCardExist:boolean;
begin
result:=WaveOutGetNumDevs >0;
end;procedure TForm1.Button1Click(Sender: TObject);
begin
if SoundCardExist then
showmessage('存在声卡');
end;
begin
Result:= WaveOutGetNumDevs >0
end;