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);
}
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");
}
}
protected virtual void Dispose(bool disposing)
{
if (!mbDisposed)
{
if (mHandleStruct.Pointer != IntPtr.Zero)
{
AllKFunctions.HotK_Free(mHandleStruct);
Debug.Print("{0} Dispose: Freed Handle:{1:X16}h Explicit:{2}", GetType().Name, mHandleStruct.Pointer.ToInt64(), disposing);
}
else
Debug.Print("{0} Dispose: [WARNING] Handle is null", GetType().Name);
mHandleStruct = new KHOT_HANDLE(IntPtr.Zero);
mbDisposed = true;
}
}
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);
}