static IntPtr RegisterDeviceNotification(IntPtr hwnd, Guid guid)
{
var notifyFilter = new NativeMethods.DEV_BROADCAST_DEVICEINTERFACE()
{
Size = Marshal.SizeOf(typeof(NativeMethods.DEV_BROADCAST_DEVICEINTERFACE)),
ClassGuid = guid,
DeviceType = NativeMethods.DBT_DEVTYP_DEVICEINTERFACE
};
var notifyHandle = NativeMethods.RegisterDeviceNotification(hwnd, ref notifyFilter, 0);
RunAssert(notifyHandle != IntPtr.Zero, "HidSharp RegisterDeviceNotification failed.");
return(notifyHandle);
}
protected override void Run(Action readyCallback)
{
const string className = "HidSharpDeviceMonitor";
NativeMethods.WindowProc windowProc = DeviceMonitorWindowProc; GC.KeepAlive(windowProc);
var wc = new NativeMethods.WNDCLASS()
{
ClassName = className, WindowProc = windowProc
};
RunAssert(0 != NativeMethods.RegisterClass(ref wc), "HidSharp RegisterClass failed.");
var hwnd = NativeMethods.CreateWindowEx(0, className, className, 0,
NativeMethods.CW_USEDEFAULT, NativeMethods.CW_USEDEFAULT, NativeMethods.CW_USEDEFAULT, NativeMethods.CW_USEDEFAULT,
NativeMethods.HWND_MESSAGE,
IntPtr.Zero, IntPtr.Zero, IntPtr.Zero);
RunAssert(hwnd != IntPtr.Zero, "HidSharp CreateWindow failed.");
var notifyFilter = new NativeMethods.DEV_BROADCAST_DEVICEINTERFACE()
{
Size = Marshal.SizeOf(typeof(NativeMethods.DEV_BROADCAST_DEVICEINTERFACE)),
ClassGuid = NativeMethods.HidD_GetHidGuid(),
DeviceType = NativeMethods.DBT_DEVTYP_DEVICEINTERFACE
};
var notifyHandle = NativeMethods.RegisterDeviceNotification(hwnd, ref notifyFilter, 0);
RunAssert(notifyHandle != IntPtr.Zero, "HidSharp RegisterDeviceNotification failed.");
readyCallback();
NativeMethods.MSG msg;
while (true)
{
int result = NativeMethods.GetMessage(out msg, hwnd, 0, 0);
if (result == 0 || result == -1)
{
break;
}
NativeMethods.TranslateMessage(ref msg);
NativeMethods.DispatchMessage(ref msg);
}
RunAssert(NativeMethods.UnregisterDeviceNotification(notifyHandle), "HidSharp UnregisterDeviceNotification failed.");
RunAssert(NativeMethods.DestroyWindow(hwnd), "HidSharp DestroyWindow failed.");
RunAssert(NativeMethods.UnregisterClass(className, IntPtr.Zero), "HidSharp UnregisterClass failed.");
}
