To control system volume with c#

How To - control system volume with c#???

Thanks for help! :)

DirectSound/Show or API import.

yeah i know but how? im a newbie i don't really know how to do it:(

I don't know how to use P/Invoke, but this is the code I used for setting the volume in C++:

Code:

---

void SetVolume(WORD vol)
{
        HWAVEOUT hWO;
        WAVEFORMATEX wf;
        wf.cbSize = 0;
        wf.nAvgBytesPerSec = 22050;
        wf.nBlockAlign = 1;
        wf.nChannels = 2;
        wf.wBitsPerSample = 16;
        wf.nSamplesPerSec = 22050;
        wf.wFormatTag = WAVE_FORMAT_PCM;
        waveOutOpen(&hWO, WAVE_MAPPER, &wf, reinterpret_cast<DWORD_PTR>(hwnd),
                0, CALLBACK_WINDOW);
        waveOutSetVolume(hWO, MAKELONG(vol, vol));
        waveOutClose(hWO);
}

---

If you have the complete Visual Studio.Net you can compile this code to a Managed C++ class library:

Code:

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// This is the main DLL file.


#using <mscorlib.dll>

#include <windows.h>

namespace CornedBee
{
        public __gc class AudioUtils
        {
        public:
                static void SetVolume(System::UInt16 volume)
                {
                        ::HWAVEOUT hWO;
                        ::WAVEFORMATEX wf;
                        wf.cbSize = 0;
                        wf.nAvgBytesPerSec = 22050;
                        wf.nBlockAlign = 1;
                        wf.nChannels = 2;
                        wf.wBitsPerSample = 16;
                        wf.nSamplesPerSec = 22050;
                        wf.wFormatTag = WAVE_FORMAT_PCM;
                        ::waveOutOpen(&hWO, WAVE_MAPPER, &wf, 0, 0, 0);
                        ::waveOutSetVolume(hWO, MAKELONG(volume, volume));
                        ::waveOutClose(hWO);
                }
        };
}

---

You must add winmm.lib to the linker input include libraries.

Actually this only sets the wave volume, I don't know how to set the real system volume.