uses mmsystem;procedure TForm1.FormCreate(Sender: TObject); var v:longint; begin waveoutgetvolume(0,@v); //得到现在音量 trackbar1.Position:=hi(v); //左声道 trackbar2.Position:=hi(v shr 16); //右声道 end;procedure TForm1.TrackBar2Change(Sender: TObject); var t,v: longint; begin t:=trackbar2.Position; waveoutgetvolume(0,@v); v:=v and $0000ffff or (t shl 24); waveoutsetvolume(0,v); end;procedure TForm1.TrackBar1Change(Sender: TObject); var t,v: longint; begin t:=trackbar1.Position; waveoutgetvolume(0,@v); v:=v and $ffff0000 or (t shl 8); waveoutsetvolume(0,v); end;
头文件mmsystem.pas var t,v:lonint; begin t:=trackbar1.position; waveoutgetvolume(0,@v); v:=v and $ffff0000 or (t shl 8);//左声道 //v:=v and $0000ffff or (t shl 8);//右声道 waveoutsetvolume(0,v); end; 初始化声音: formcreate var v:longint; 得到音量: waveoutgetvolum(0,@v); 左:trackbar1.position:=hi(v); 右:trackbar2.position:=hi(v shr16));
mcisendstring('set all audio all off',nil,0,nil) mcisendstring('set all audio all on',nil,0,nil) mcisendstring('set all audio all left on',nil,0,nil) mcisendstring('set all audio all right on',nil,0,nil) 灵活运用(上述代码基本正确,如果写错查一下HELP) 记得给分我!
mcisendstring('set all audio all off',nil,0,nil) mcisendstring('set all audio all on',nil,0,nil) mcisendstring('set all audio all left on',nil,0,nil) mcisendstring('set all audio all right on',nil,0,nil) 灵活运用(上述代码基本正确,如果写错查一下HELP) 记得给分我!
你可以看一下<DELPHI4.0多媒体编程技术实例>
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var v:longint;
begin
waveoutgetvolume(0,@v); //得到现在音量
trackbar1.Position:=hi(v); //左声道
trackbar2.Position:=hi(v shr 16); //右声道
end;procedure TForm1.TrackBar2Change(Sender: TObject);
var t,v: longint;
begin
t:=trackbar2.Position;
waveoutgetvolume(0,@v);
v:=v and $0000ffff or (t shl 24);
waveoutsetvolume(0,v);
end;procedure TForm1.TrackBar1Change(Sender: TObject);
var t,v: longint;
begin
t:=trackbar1.Position;
waveoutgetvolume(0,@v);
v:=v and $ffff0000 or (t shl 8);
waveoutsetvolume(0,v);
end;
var
t,v:lonint;
begin
t:=trackbar1.position;
waveoutgetvolume(0,@v);
v:=v and $ffff0000 or (t shl 8);//左声道
//v:=v and $0000ffff or (t shl 8);//右声道
waveoutsetvolume(0,v);
end;
初始化声音:
formcreate
var
v:longint;
得到音量:
waveoutgetvolum(0,@v);
左:trackbar1.position:=hi(v);
右:trackbar2.position:=hi(v shr16));
mcisendstring('set all audio all on',nil,0,nil)
mcisendstring('set all audio all left on',nil,0,nil)
mcisendstring('set all audio all right on',nil,0,nil)
灵活运用(上述代码基本正确,如果写错查一下HELP)
记得给分我!
mcisendstring('set all audio all on',nil,0,nil)
mcisendstring('set all audio all left on',nil,0,nil)
mcisendstring('set all audio all right on',nil,0,nil)
灵活运用(上述代码基本正确,如果写错查一下HELP)
记得给分我!