在C中有类似C#的SystemProperty.PhoneIncomingCall事件吗?
如何调用呢?
------解决方案--------------------
RegistryNotify系列API，监控注册表键值
////////////////////////////////////////////////////////////////////////////////
// PhoneIncomingCall
// Gets a value indicating whether there is an incoming (ringing) call.
#define SN_PHONEINCOMINGCALL_ROOT HKEY_LOCAL_MACHINE
#define SN_PHONEINCOMINGCALL_PATH TEXT("System\\State\\Phone")
#define SN_PHONEINCOMINGCALL_VALUE TEXT("Status")
#define SN_PHONEINCOMINGCALL_BITMASK 0x10000