/// <summary>
/// USB HIDデバイスをオープンする
/// </summary>
/// <param name="vid">デバイスのVID</param>
/// <param name="pid">デバイスのPID</param>
/// <returns>成功した場合true、存在しなかった場合false</returns>
/// <exception cref="InvalidOperationException">デバイスをオープンできなかった場合</exception>
public bool Open(uint vid, uint pid)
{
string path = string.Format(@"\\?\hid#vid_{0,0:x4}&pid_{1,0:x4}", vid, pid);
Guid guid = new Guid();
Native.HidD_GetHidGuid(ref guid);
IntPtr hDeviceInfoSet = Native.SetupDiGetClassDevs(ref guid, 0, IntPtr.Zero, Native.DIGCF_PRESENT | Native.DIGCF_DEVICEINTERFACE);
Native.SP_DEVICE_INTERFACE_DATA spid = new Native.SP_DEVICE_INTERFACE_DATA();
spid.cbSize = Marshal.SizeOf(spid);
int i = 0;
while (Native.SetupDiEnumDeviceInterfaces(hDeviceInfoSet, null, ref guid, i, spid))
{
i++;
Native.SP_DEVINFO_DATA devData = new Native.SP_DEVINFO_DATA();
devData.cbSize = Marshal.SizeOf(devData);
int size = 0;
Native.SetupDiGetDeviceInterfaceDetail(hDeviceInfoSet, spid, IntPtr.Zero, 0, ref size, devData);
IntPtr buffer = Marshal.AllocHGlobal(size);
Native.SP_DEVICE_INTERFACE_DETAIL_DATA detailData = new Native.SP_DEVICE_INTERFACE_DETAIL_DATA();
detailData.cbSize = Marshal.SizeOf(typeof(Native.SP_DEVICE_INTERFACE_DETAIL_DATA));
Marshal.StructureToPtr(detailData, buffer, false);
Native.SetupDiGetDeviceInterfaceDetail(hDeviceInfoSet, spid, buffer, size, ref size, devData);
IntPtr pDevicePath = (IntPtr)((int)buffer + Marshal.SizeOf(typeof(int)));
string devicePath = Marshal.PtrToStringAuto(pDevicePath);
Marshal.FreeHGlobal(buffer);
if (devicePath.IndexOf(path) == 0)
{
hDev = Native.CreateFile(
devicePath,
Native.GENERIC_READ | Native.GENERIC_WRITE,
0,
IntPtr.Zero,
Native.OPEN_EXISTING,
0,
IntPtr.Zero
);
break;
}
}
Native.SetupDiDestroyDeviceInfoList(hDeviceInfoSet);
if (hDev.ToInt32() <= -1)
{
hDev = IntPtr.Zero;
throw new InvalidOperationException(GetErrorMessage());
}
else if (DeviceReady)
{
return(true);
}
return(false);
}
/// <summary>
/// USB HIDデバイスをオープンする
/// </summary>
/// <param name="vid">デバイスのVID</param>
/// <param name="pid">デバイスのPID</param>
/// <returns>成功した場合true、存在しなかった場合false</returns>
/// <exception cref="InvalidOperationException">デバイスをオープンできなかった場合</exception>
public bool Open( uint vid, uint pid )
{
string path = string.Format( @"\\?\hid#vid_{0,0:x4}&pid_{1,0:x4}", vid, pid );
Guid guid = new Guid();
Native.HidD_GetHidGuid( ref guid );
IntPtr hDeviceInfoSet = Native.SetupDiGetClassDevs( ref guid, 0, IntPtr.Zero, Native.DIGCF_PRESENT | Native.DIGCF_DEVICEINTERFACE );
Native.SP_DEVICE_INTERFACE_DATA spid = new Native.SP_DEVICE_INTERFACE_DATA();
spid.cbSize = Marshal.SizeOf( spid );
int i = 0;
while ( Native.SetupDiEnumDeviceInterfaces( hDeviceInfoSet, null, ref guid, i, spid ) ) {
i++;
Native.SP_DEVINFO_DATA devData = new Native.SP_DEVINFO_DATA();
devData.cbSize = Marshal.SizeOf( devData );
int size = 0;
Native.SetupDiGetDeviceInterfaceDetail( hDeviceInfoSet, spid, IntPtr.Zero, 0, ref size, devData );
IntPtr buffer = Marshal.AllocHGlobal( size );
Native.SP_DEVICE_INTERFACE_DETAIL_DATA detailData = new Native.SP_DEVICE_INTERFACE_DETAIL_DATA();
detailData.cbSize = Marshal.SizeOf( typeof( Native.SP_DEVICE_INTERFACE_DETAIL_DATA ) );
Marshal.StructureToPtr( detailData, buffer, false );
Native.SetupDiGetDeviceInterfaceDetail( hDeviceInfoSet, spid, buffer, size, ref size, devData );
IntPtr pDevicePath = (IntPtr)( (int)buffer + Marshal.SizeOf( typeof( int ) ) );
string devicePath = Marshal.PtrToStringAuto( pDevicePath );
Marshal.FreeHGlobal( buffer );
if ( devicePath.IndexOf( path ) == 0 ) {
hDev = Native.CreateFile(
devicePath,
Native.GENERIC_READ | Native.GENERIC_WRITE,
0,
IntPtr.Zero,
Native.OPEN_EXISTING,
0,
IntPtr.Zero
);
break;
}
}
Native.SetupDiDestroyDeviceInfoList( hDeviceInfoSet );
if ( hDev.ToInt32() <= -1 ) {
hDev = IntPtr.Zero;
throw new InvalidOperationException( GetErrorMessage() );
} else if ( DeviceReady ) {
return true;
}
return false;
}