win32volume.h

CD播放器源代码 .rar

#include <windows.h>
#include <stdlib.h>

class Win32Volume
{
public:
	Win32Volume();
	virtual ~Win32Volume(void);

	void GetVolume(int &left, int &right);
	void SetVolume(int left, int right);

	bool InitVolumeControl(HWND );

protected:

	UINT m_nNumMixers;
	HMIXER m_hMixer;
	MIXERCAPS m_mxcaps;

	MIXERLINE mxl;
    MIXERCONTROL mxc;
    MIXERLINECONTROLS mxlc;

	char* m_oDstLineName, m_oVolumeControlName;
	DWORD m_dwMinimum, m_dwMaximum;
	DWORD m_dwVolumeControlID;
};