// [System.Security.Permissions.PermissionSet( System.Security.Permissions.SecurityAction.Demand, Name = "FullTrust" )]
protected override void WndProc(ref Message m)
{
base.WndProc(ref m);
int wParam = (int)m.WParam;
// Обрабатываем событие при изменении статуса USB устройств.
//
if (m.Msg == Win32.WM_DEVICECHANGE)
{
if ((wParam == Win32.DBT_DEVICEARRIVAL) || (wParam == Win32.DBT_DEVICEREMOVECOMPLETE))
{
// Read the dhdr.dbcc_devicetype
//
Win32.DEV_BROADCAST_HDR devPtr = (Win32.DEV_BROADCAST_HDR)Marshal.PtrToStructure(m.LParam, typeof(Win32.DEV_BROADCAST_HDR));
if (devPtr.dbcc_devicetype == Win32.DBT_DEVTYP_DEVICEINTERFACE)
{
Win32.DEV_BROADCAST_DEVICEINTERFACE dip = (Win32.DEV_BROADCAST_DEVICEINTERFACE)Marshal.PtrToStructure(m.LParam, typeof(Win32.DEV_BROADCAST_DEVICEINTERFACE));
string sDevName = dip.dbcc_name;
if (sDevName.ToUpper().StartsWith(_usbDeviceID)) // Если это SuperPro 6100.
{
if (wParam == Win32.DBT_DEVICEARRIVAL)
{
USB_PortOpen_();
}
else if (wParam == Win32.DBT_DEVICEREMOVECOMPLETE)
{
USB_CloseFiles();
USB_InfoToggle(false);
}
}
}
}
}
}
/// <summary>
/// Override called when the window handle has been created.
/// </summary>
/// <param name="e"></param>
protected override void OnHandleCreated(EventArgs e)
{
// Подписываем наш обработчик оконных сообщений на получение сообщений
// DBT_DEVICEARRIVAL и DBT_DEVICEREMOVECOMPLETE
//
Win32.DEV_BROADCAST_DEVICEINTERFACE oInterfaceIn = new Win32.DEV_BROADCAST_DEVICEINTERFACE();
oInterfaceIn.dbcc_size = Marshal.SizeOf(oInterfaceIn);
oInterfaceIn.dbcc_classguid = Win32.GUID_DEVINTERFACE_USB_DEVICE;
oInterfaceIn.dbcc_devicetype = Win32.DBT_DEVTYP_DEVICEINTERFACE;
Win32.RegisterDeviceNotification(this.Handle, oInterfaceIn, Win32.DEVICE_NOTIFY_WINDOW_HANDLE);
base.OnHandleCreated(e);
}