Board index » cppbuilder » control volume

2007-07-20 01:00:50 AM
cppbuilder62
hi,
i have a MediaPlayer playing some audio files using the Open() and Play()
functions. I am using bds2006. How can i increase decrease the volume of
the sound played?I would like to place a ProgressBar for this.
Is there some tutorial or web page article that can help me do this?
thanks
 

"loukia" < XXXX@XXXXX.COM >wrote in message
You can try calling the Win32 Multimedia API mciSendCommand() function
directly, using the MCI_SETAUDIO command with the MCI_DGV_SETAUDIO_VOLUME
flag. Pass the TMediaPlayer's DeviceID property as the first parameter to
mciSendCommand() after Open() has succeeded.
If that doesn't work, then try waveOutSetVolumn() instead.
If that still doesn't work, then you are out of luck. You will have to use
something other than TMediaPlayer, such as DirectX.
Gambit
 

Hi loukia
19 Jul 2007 13:00:50 -0400, loukia < XXXX@XXXXX.COM >wrote:
I think your talking of a slider control ?
respectively might just be a good place where to start.
__
JF Jolin
 

{smallsort}

Remy Lebeau (TeamB) wrote:
DiurectX will help here.
AFAIK, one would have to use the mixer API.
Jon
 

"Jonathan Benedicto" < XXXX@XXXXX.COM >wrote in message
referring to getting rid of TMediaPlayer altogether and using DirectX to
play the file.
Gambit
 

thank you all for your answers the code that does the job is:
//TrackBar2->Max=0xFFFF;
// TrackBar2->Min=0;
int value =TrackBar2->Position;
waveOutSetVolume(0, MAKELONG(value, value));
for mute (on-off):
if (TrackBar2->Position!=0) {
TrackBar2->Position=0;
}
else{TrackBar2->Position=TrackBar2->Max;}
int value =TrackBar2->Position;
waveOutSetVolume(0, MAKELONG(value, value));
"JF Jolin" < XXXX@XXXXX.COM >wrote in message