change volume of the sndPlaySound() output ??

[Greber]

Hallo,

I play wav-files with sndPlaySound() in my program. Is there a possibility to change the volume step by step by pressing a button (one for up and one for down) in the uir-file?

thx
Florian

[Jattie]

ActiveX should be able to do that! You might be able to use the manufacturer driver or .dll directly. If not low level IO to the hardware address.

[Greber]

Hallo again,

active X is okay, but which one?

Is there no possibility to use no active x?
please give me a function or something else

thx
Florian

[RobertoBozzolo]

Playing a little with the SDK I found these useful functions: waveOutGetVolume and waveOutSetVolume that read and set the volume of the wave audio device. They worked well while playing a CD on the computer: maybe can help you in your application.

Take a look at the attached project. It works on my machine that has only one audio device: in case od more complex configurations you'll have to struggle a bit to intercept the proper device: the waveOutGetNumDevs function can help you in finding how many devices are installed in your computer.

Roberto