adjustvolumeinterface.h

实现了一个lib,Wince标准的方式调节系统音量

#ifndef __ADJUST_VOLUME_INTERFACE_H_
#define __ADJUST_VOLUME_INTERFACE_H_

#define DEFAULT_VOLUME_LEVELS 5

//dwNewVolume : the volume to be set
//return : the old volume
DWORD ChangeSoundVolume(DWORD dwNewVolume);
	
void AddVolume( int nLevel = DEFAULT_VOLUME_LEVELS );

void ReduceVolume( int nLevel = DEFAULT_VOLUME_LEVELS );

DWORD GetCurrentVolume();


#endif //end of __ADJUST_VOLUME_INTERFACE_H_