public DeviceEventNotifier(IntPtr windowHandle, Guid deviceClass)
{
base.AssignHandle(windowHandle);
var filterInterface = new User32.BroadcastDeviceInterface {
DeviceClass = deviceClass
};
var filter = new User32.BroadcastHdr {
Size = Marshal.SizeOf(typeof (User32.BroadcastHdr)),
DeviceType = User32.DeviceType.Interface,
Interface = filterInterface
};
notificationHandle = User32.RegisterDeviceNotification(base.Handle, filter, User32.DeviceNotificationFlags.WindowHandle);
}
public DeviceEventNotifier(IntPtr windowHandle, Guid deviceClass)
{
base.AssignHandle(windowHandle);
var filterInterface = new User32.BroadcastDeviceInterface {
DeviceClass = deviceClass
};
var filter = new User32.BroadcastHdr {
Size = Marshal.SizeOf(typeof(User32.BroadcastHdr)),
DeviceType = User32.DeviceType.Interface,
Interface = filterInterface
};
notificationHandle = User32.RegisterDeviceNotification(base.Handle, filter, User32.DeviceNotificationFlags.WindowHandle);
}
protected override void WndProc(ref System.Windows.Forms.Message m)
{
if (m.Msg == (int)User32.WindowMessage.DeviceChange) {
User32.BroadcastHdr hdr = new User32.BroadcastHdr();
if (m.LParam != IntPtr.Zero) {
hdr = (User32.BroadcastHdr)Marshal.PtrToStructure(
m.LParam,
typeof(User32.BroadcastHdr));
}
switch (m.WParam.ToInt32()) {
case (int)User32.DeviceEvent.DeviceArrival:
OnDeviceArrived(hdr.Interface.Name);
break;
case (int)User32.DeviceEvent.DeviceRemoveComplete:
OnDeviceRemoval(hdr.Interface.Name);
break;
}
}
base.WndProc(ref m);
}
protected override void WndProc(ref System.Windows.Forms.Message m)
{
if (m.Msg == (int)User32.WindowMessage.DeviceChange)
{
User32.BroadcastHdr hdr = new User32.BroadcastHdr();
if (m.LParam != IntPtr.Zero)
{
hdr = (User32.BroadcastHdr)Marshal.PtrToStructure(
m.LParam,
typeof(User32.BroadcastHdr));
}
switch (m.WParam.ToInt32())
{
case (int)User32.DeviceEvent.DeviceArrival:
OnDeviceArrived(hdr.Interface.Name);
break;
case (int)User32.DeviceEvent.DeviceRemoveComplete:
OnDeviceRemoval(hdr.Interface.Name);
break;
}
}
base.WndProc(ref m);
}
