1 reply to this topic

[Nille]

Hi guys, got a bit of a problem.
I am making a program (an alarm clock :P) and i want to be able to increase the system sound volume (might be the wrong name for it but anyways) but i dont know quite how to, i found 2 pages on msdn (Microsoft developer network)
waveOutGetVolume
and
waveOutSetVolume
but i don't quite understand how to use it.
I understand that the sound is increased and decreased by setting the value of a variable.
What i don't understand is how to declare that variable and how to make the volume change as i change the variables value.

[dargueta]

First you need to get the handle of the sound device you're using, then pass in the handle and volume to the waveOutSetVolume function:

HWAVEOUT  hSpeaker = NULL;


//You need to fill this structure out depending on what sound you're using

WAVEFORMATEX  soundData;


//get handle to speaker

waveOutOpen(&hSpeaker,WAVE_MAPPER,&soundData,NULL,CALLBACK_NULL);


//speaker now opened for output. Set the volume.

waveOutSetVolume(hSpeaker,/*your volume here, 0xFFFF is max*/);


//do your thing.