// Gets the hardware ID.
private static unsafe string GetDeviceName(IntPtr hDevice)
{
uint charCount = 0;
RID_DEVICE_INFO info = new RID_DEVICE_INFO();
info.cbSize = (uint)Marshal.SizeOf(typeof(RID_DEVICE_INFO));
charCount = info.cbSize;
uint res = Win32.GetRawInputDeviceInfo(hDevice, Win32.RIDI_DEVICENAME, ref info, ref charCount);
#if DEBUG
if (res < 1)
{
throw new Win32Exception(Marshal.GetLastWin32Error());
}
#endif // DEBUG
string deviceName = String.Empty;
if (charCount > 0)
{
char *pName = stackalloc char[(int)charCount + 1];
pName[0] = '\0';
res = Win32.GetRawInputDeviceInfo(hDevice, Win32.RIDI_DEVICENAME, (IntPtr)pName, ref charCount);
#if DEBUG
if (res != charCount)
{
throw new Win32Exception(Marshal.GetLastWin32Error());
}
#endif // DEBUG
deviceName = new string(pName);
}
return(deviceName); // Will never return a null reference.
}
// Gets the hardware ID.
private static unsafe string GetDeviceName(IntPtr hDevice)
{
uint charCount = 0;
RID_DEVICE_INFO info = new RID_DEVICE_INFO();
info.cbSize = (uint) Marshal.SizeOf(typeof (RID_DEVICE_INFO));
charCount = info.cbSize;
uint res = Win32.GetRawInputDeviceInfo(hDevice, Win32.RIDI_DEVICENAME, ref info, ref charCount);
#if DEBUG
if (res < 1)
throw new Win32Exception(Marshal.GetLastWin32Error());
#endif // DEBUG
string deviceName = String.Empty;
if (charCount > 0)
{
char* pName = stackalloc char[(int)charCount + 1];
pName[0] = '\0';
res = Win32.GetRawInputDeviceInfo(hDevice, Win32.RIDI_DEVICENAME, (IntPtr)pName, ref charCount);
#if DEBUG
if (res != charCount)
throw new Win32Exception(Marshal.GetLastWin32Error());
#endif // DEBUG
deviceName = new string(pName);
}
return deviceName; // Will never return a null reference.
}
public static extern uint GetRawInputDeviceInfo(IntPtr hDevice, uint command, [In] ref RID_DEVICE_INFO ridInfo, ref uint sizeInBytes);
