private static void OnHotPlug(KHOT_HANDLE hotHandle,
KLST_DEVINFO_HANDLE deviceInfo,
KLST_SYNC_FLAG plugType)
{
string plugText;
int totalPluggedDeviceCount = (int) hotHandle.GetContext().ToInt64();
if (totalPluggedDeviceCount == int.MaxValue)
{
Console.WriteLine("OnHotPlug is being called for the first time on handle:{0}", hotHandle.Pointer);
totalPluggedDeviceCount = 0;
}
switch (plugType)
{
case KLST_SYNC_FLAG.ADDED:
plugText = "Arrival";
totalPluggedDeviceCount++;
break;
case KLST_SYNC_FLAG.REMOVED:
plugText = "Removal";
totalPluggedDeviceCount--;
break;
default:
throw new ArgumentOutOfRangeException("plugType");
}
hotHandle.SetContext(new IntPtr(totalPluggedDeviceCount));
Console.WriteLine("\n[OnHotPlug] Device {0}:{1} \n",
plugText,
deviceInfo);
Console.WriteLine("Total Plugged Device Count: {0}",
totalPluggedDeviceCount);
}
public UsbK(KLST_DEVINFO_HANDLE DevInfo)
{
var success = AllKFunctions.LibK_LoadDriverAPI(out driverAPI, DevInfo.DriverID);
if (!success)
{
throw new Exception();
}
success = driverAPI.Init(out mHandleStruct, DevInfo);
if (!success)
{
throw new Exception();
}
}
private void OnHotPlugInvoked(KHOT_HANDLE hotHandle, KLST_DEVINFO_HANDLE deviceInfo, KLST_SYNC_FLAG plugType)
{
string symbolicLink = deviceInfo.SymbolicLink;
switch (plugType)
{
case KLST_SYNC_FLAG.ADDED:
int iRow = dgvDevices.Rows.Add(new object[] {symbolicLink, deviceInfo.DeviceDesc, deviceInfo.DeviceID});
dgvDevices.Rows[iRow].Cells[1].ToolTipText = deviceInfo.ToString();
dgvDevices.Rows[iRow].Cells[2].ToolTipText = deviceInfo.Common.ToString();
break;
case KLST_SYNC_FLAG.REMOVED:
foreach (DataGridViewRow row in dgvDevices.Rows)
{
if (row.Cells[0].Value as string != symbolicLink) continue;
dgvDevices.Rows.Remove(row);
break;
}
break;
default:
throw new ArgumentOutOfRangeException("plugType");
}
}
/// <Summary>Creates/opens a libusbK interface handle from the device list. This is a preferred method.</Summary>
public UsbK(KLST_DEVINFO_HANDLE DevInfo)
{
bool success = AllKFunctions.LibK_LoadDriverAPI(out driverAPI, DevInfo.DriverID);
if (!success) throw new Exception(string.Format("{0} failed loading Driver API. ErrorCode={1:X8}h", GetType().Name, Marshal.GetLastWin32Error()));
success = driverAPI.Init(out mHandleStruct, DevInfo);
if (!success)
throw new Exception(string.Format("{0} failed initializing usb device. ErrorCode={1:X8}h", GetType().Name, Marshal.GetLastWin32Error()));
Debug.Print("{0} Init: handle 0x{1:X16}", GetType().Name, mHandleStruct.Pointer.ToInt64());
}
/// <Summary>Advances the device list current \ref KLST_DEVINFO position.</Summary>
public virtual bool MoveNext(out KLST_DEVINFO_HANDLE DeviceInfo)
{
return AllKFunctions.LstK_MoveNext(mHandleStruct, out DeviceInfo);
}
/// <Summary>Find a device by vendor and product id</Summary>
public virtual bool FindByVidPid(int Vid, int Pid, out KLST_DEVINFO_HANDLE DeviceInfo)
{
return AllKFunctions.LstK_FindByVidPid(mHandleStruct, Vid, Pid, out DeviceInfo);
}
public virtual bool MoveNext(out KLST_DEVINFO_HANDLE DeviceInfo) => AllKFunctions.LstK_MoveNext(mHandleStruct, out DeviceInfo);
protected override void WndProc(ref Message m)
{
/* When using the HotK UserHwnd and UserMsg, the add/remove events are seperated into to different messages.
* Removal = UserMsg + 0
* Arrival = UserMsg + 1
*/
if (m.Msg == WM_USER_HOT_REMOVAL || m.Msg == WM_USER_HOT_ARRIVAL)
{
KHOT_HANDLE hotHandle = new KHOT_HANDLE(m.WParam);
KLST_DEVINFO_HANDLE deviceInfo = new KLST_DEVINFO_HANDLE(m.LParam);
KLST_SYNC_FLAG plugType = (m.Msg == WM_USER_HOT_REMOVAL) ? KLST_SYNC_FLAG.REMOVED : KLST_SYNC_FLAG.ADDED;
OnHotPlugInvoked(hotHandle, deviceInfo, plugType);
return;
}
base.WndProc(ref m);
}
/// <Summary>Creates/opens a libusbK interface handle from the device list. This is a preferred method.</Summary>
public UsbK(KLST_DEVINFO_HANDLE DevInfo)
{
if (!Functions.LibK_LoadDriverAPI(out driverAPI, DevInfo.DriverID))
{
throw new Exception(GetType().Name + " failed loading Driver API. ErrorCode=" + Marshal.GetLastWin32Error().ToString("X"));
}
RuntimeHelpers.PrepareConstrainedRegions();
try
{
}
finally
{
bool success = driverAPI.Init(out handle, DevInfo);
if (!success || handle.IsInvalid || handle.IsClosed)
{
handle.SetHandleAsInvalid();
int errorCode = Marshal.GetLastWin32Error();
throw new Exception(GetType().Name + " failed. ErrorCode=" + errorCode.ToString("X"));
}
}
}
/// <Summary>Advances the device list current \ref KLST_DEVINFO position.</Summary>
public bool MoveNext(out KLST_DEVINFO_HANDLE DeviceInfo)
{
return Functions.LstK_MoveNext(handle, out DeviceInfo);
}
/// <Summary>Find a device by vendor and product id</Summary>
public bool FindByVidPid(int Vid, int Pid, out KLST_DEVINFO_HANDLE DeviceInfo)
{
return Functions.LstK_FindByVidPid(handle, Vid, Pid, out DeviceInfo);
}
/// <Summary>Gets the \ref KLST_DEVINFO element for the current position.</Summary>
public bool Current(out KLST_DEVINFO_HANDLE DeviceInfo)
{
return Functions.LstK_Current(handle, out DeviceInfo);
}