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delphiplaysound

sndPlaySound or PlaySound on KeyPress - Playing keyboard sounds


I am trying to make a program that plays sound files on every keypress in TEdit.

I tried sndPlaySound from a resource file on a Edit1 KeyPress event, but the problem is that it does not exactly play sounds as if in real keyboard typing. There's a delay in sound playing between every key pressed.

procedure TForm2.Edit1KeyPress(Sender: TObject; var Key: Char);
begin
sndPlaySound(PCHAR('KeyPress'), SND_RESOURCE OR SND_ASYNC);
end;

This code does play sounds, but if you type quickly, only on the last key you type you'd hear the sound file being played.


Solution

  • The answer posted by TLama is this code which worked perfectly well:

    unit Unit1;
    
    interface
    
    uses
    Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
    Dialogs, StdCtrls, Bass;
    
    type
    TForm1 = class(TForm)
    Edit1: TEdit;
    procedure FormCreate(Sender: TObject);
    procedure FormDestroy(Sender: TObject);
    procedure Edit1KeyPress(Sender: TObject; var Key: Char);
    private
    StreamHandle: HSTREAM;
    public
    { Public declarations }
    end;
    
    var
    Form1: TForm1;
    
    implementation
    
    {$R *.dfm}
    
    procedure TForm1.FormCreate(Sender: TObject);
    begin
    if BASS_Init(-1, 44100, 0, Handle, nil) then
    begin
    StreamHandle := BASS_StreamCreateFile(False, PChar('c:\Windows\Media\tada.wav'), 0,
      0, 0 {$IFDEF UNICODE} or BASS_UNICODE {$ENDIF});
    end;
    end;
    
    procedure TForm1.FormDestroy(Sender: TObject);
    begin
    BASS_StreamFree(StreamHandle);
    BASS_Free;
    end;
    
    procedure TForm1.Edit1KeyPress(Sender: TObject; var Key: Char);
    begin
    BASS_ChannelPlay(StreamHandle, True);
    end;
    
    end.