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using System;
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using System.IO;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using System.Diagnostics;
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using System.Runtime.InteropServices;
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using System.Windows.Forms;
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using Microsoft.Win32.SafeHandles;
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using System.ComponentModel;
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//
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using Hid = SharpLib.Hid;
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using SharpLib.Win32;
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namespace SharpDisplayManager
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{
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/// <summary>
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/// Implement handling of HID input reports notably to be able to launch an application using the Green Start button from IR remotes.
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/// </summary>
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[System.ComponentModel.DesignerCategory("Code")]
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public class MainFormHid : Form
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{
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[System.Runtime.InteropServices.DllImportAttribute("user32.dll", EntryPoint = "SwitchToThisWindow")]
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public static extern void SwitchToThisWindow([System.Runtime.InteropServices.InAttribute()] System.IntPtr hwnd, [System.Runtime.InteropServices.MarshalAsAttribute(System.Runtime.InteropServices.UnmanagedType.Bool)] bool fUnknown);
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//
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public delegate void OnHidEventDelegate(object aSender, Hid.Event aHidEvent);
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/// <summary>
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/// Use notably to handle green start key from IR remote control
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/// </summary>
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private Hid.Handler iHidHandler;
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/// <summary>
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/// Register HID devices so that we receive corresponding WM_INPUT messages.
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/// </summary>
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protected void RegisterHidDevices()
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{
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// Register the input device to receive the commands from the
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// remote device. See http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnwmt/html/remote_control.asp
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// for the vendor defined usage page.
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RAWINPUTDEVICE[] rid = new RAWINPUTDEVICE[5];
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int i = 0;
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rid[i].usUsagePage = (ushort)SharpLib.Hid.UsagePage.WindowsMediaCenterRemoteControl;
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rid[i].usUsage = (ushort)SharpLib.Hid.UsageCollection.WindowsMediaCenter.WindowsMediaCenterRemoteControl;
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rid[i].dwFlags = Const.RIDEV_INPUTSINK;
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rid[i].hwndTarget = Handle;
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i++;
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rid[i].usUsagePage = (ushort)SharpLib.Hid.UsagePage.Consumer;
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rid[i].usUsage = (ushort)SharpLib.Hid.UsageCollection.Consumer.ConsumerControl;
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rid[i].dwFlags = Const.RIDEV_INPUTSINK;
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rid[i].hwndTarget = Handle;
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i++;
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rid[i].usUsagePage = (ushort)SharpLib.Hid.UsagePage.Consumer;
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rid[i].usUsage = (ushort)SharpLib.Hid.UsageCollection.Consumer.Selection;
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rid[i].dwFlags = Const.RIDEV_INPUTSINK;
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rid[i].hwndTarget = Handle;
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i++;
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rid[i].usUsagePage = (ushort)SharpLib.Hid.UsagePage.GenericDesktopControls;
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rid[i].usUsage = (ushort)SharpLib.Hid.UsageCollection.GenericDesktop.SystemControl;
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rid[i].dwFlags = Const.RIDEV_INPUTSINK;
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rid[i].hwndTarget = Handle;
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i++;
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rid[i].usUsagePage = (ushort)SharpLib.Hid.UsagePage.GenericDesktopControls;
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rid[i].usUsage = (ushort)SharpLib.Hid.UsageCollection.GenericDesktop.GamePad;
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rid[i].dwFlags = Const.RIDEV_INPUTSINK;
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rid[i].hwndTarget = Handle;
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//i++;
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//rid[i].usUsagePage = (ushort)SharpLib.Hid.UsagePage.GenericDesktopControls;
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//rid[i].usUsage = (ushort)SharpLib.Hid.UsageCollection.GenericDesktop.Keyboard;
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//rid[i].dwFlags = Const.RIDEV_EXINPUTSINK;
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//rid[i].hwndTarget = Handle;
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//i++;
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//rid[i].usUsagePage = (ushort)Hid.UsagePage.GenericDesktopControls;
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//rid[i].usUsage = (ushort)Hid.UsageCollection.GenericDesktop.Mouse;
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//rid[i].dwFlags = Const.RIDEV_EXINPUTSINK;
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//rid[i].hwndTarget = aHWND;
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iHidHandler = new SharpLib.Hid.Handler(rid);
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if (!iHidHandler.IsRegistered)
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{
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Debug.WriteLine("Failed to register raw input devices: " + Marshal.GetLastWin32Error().ToString());
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}
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iHidHandler.OnHidEvent += HandleHidEventThreadSafe;
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}
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/// <summary>
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/// Here we receive HID events from our HID library.
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/// </summary>
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/// <param name="aSender"></param>
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/// <param name="aHidEvent"></param>
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public void HandleHidEventThreadSafe(object aSender, SharpLib.Hid.Event aHidEvent)
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{
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if (aHidEvent.IsStray)
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{
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//Stray event just ignore it
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return;
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}
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if (this.InvokeRequired)
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{
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//Not in the proper thread, invoke ourselves
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OnHidEventDelegate d = new OnHidEventDelegate(HandleHidEventThreadSafe);
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this.Invoke(d, new object[] { aSender, aHidEvent });
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}
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else
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{
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if (aHidEvent.Usages.Count == 0)
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{
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//No usage, nothing to do then
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return;
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}
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//We are in the proper thread
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if (aHidEvent.UsagePage == (ushort) Hid.UsagePage.WindowsMediaCenterRemoteControl)
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{
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switch (aHidEvent.Usages[0])
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{
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case (ushort)Hid.Usage.WindowsMediaCenterRemoteControl.GreenStart:
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HandleGreenStart();
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break;
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case (ushort)Hid.Usage.WindowsMediaCenterRemoteControl.Eject:
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case (ushort)Hid.Usage.WindowsMediaCenterRemoteControl.Ext2:
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HandleEject();
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break;
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}
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}
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//Keep this for debug when only ThinkPad keyboard is available
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if (aHidEvent.UsagePage == (ushort)Hid.UsagePage.Consumer && aHidEvent.Usages[0] == (ushort)Hid.Usage.ConsumerControl.ThinkPadFullscreenMagnifier)
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{
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HandleEject();
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}
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}
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}
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/// <summary>
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///
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/// </summary>
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/// <param name="aPrefix"></param>
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private void CheckLastError(string aPrefix)
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{
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string errorMessage = new Win32Exception(Marshal.GetLastWin32Error()).Message;
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Debug.WriteLine(aPrefix + Marshal.GetLastWin32Error().ToString() + ": " + errorMessage);
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}
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/// <summary>
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///
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/// </summary>
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/// <param name="data"></param>
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/// <returns></returns>
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private IntPtr MarshalToPointer(object data)
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{
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IntPtr buf = Marshal.AllocHGlobal(
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Marshal.SizeOf(data));
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Marshal.StructureToPtr(data,
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buf, false);
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return buf;
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}
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/// <summary>
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///
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/// </summary>
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/// <returns></returns>
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private SafeFileHandle OpenVolume(string aDriveName)
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{
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return Function.CreateFile("\\\\.\\" + aDriveName,
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SharpLib.Win32.FileAccess.GENERIC_READ,
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SharpLib.Win32.FileShare.FILE_SHARE_READ | SharpLib.Win32.FileShare.FILE_SHARE_WRITE,
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IntPtr.Zero,
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CreationDisposition.OPEN_EXISTING,
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0,
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IntPtr.Zero);
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}
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/// <summary>
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///
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/// </summary>
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/// <param name="aVolume"></param>
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/// <returns></returns>
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private bool LockVolume(SafeFileHandle aVolume)
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{
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//Hope that's doing what I think it does
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IntPtr dwBytesReturned=new IntPtr();
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//Should not be needed but I'm not sure how to pass NULL in there.
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OVERLAPPED overlapped=new OVERLAPPED();
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int tries = 0;
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const int KMaxTries = 100;
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const int KSleepTime = 10;
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bool success = false;
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while (!success && tries < KMaxTries)
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{
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success = Function.DeviceIoControl(aVolume, Const.FSCTL_LOCK_VOLUME, IntPtr.Zero, 0, IntPtr.Zero, 0, dwBytesReturned, ref overlapped);
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System.Threading.Thread.Sleep(KSleepTime);
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tries++;
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}
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CheckLastError("Lock volume: ");
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return success;
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}
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/// <summary>
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///
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/// </summary>
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/// <param name="aVolume"></param>
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/// <returns></returns>
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private bool DismountVolume(SafeFileHandle aVolume)
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{
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//Hope that's doing what I think it does
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IntPtr dwBytesReturned = new IntPtr();
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//Should not be needed but I'm not sure how to pass NULL in there.
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OVERLAPPED overlapped=new OVERLAPPED();
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bool res = Function.DeviceIoControl(aVolume, Const.FSCTL_DISMOUNT_VOLUME, IntPtr.Zero, 0, IntPtr.Zero, 0, dwBytesReturned, ref overlapped);
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CheckLastError("Dismount volume: ");
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return res;
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}
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/// <summary>
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///
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/// </summary>
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/// <param name="aVolume"></param>
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/// <param name="aPreventRemoval"></param>
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/// <returns></returns>
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private bool PreventRemovalOfVolume(SafeFileHandle aVolume, bool aPreventRemoval)
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{
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//Hope that's doing what I think it does
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IntPtr dwBytesReturned = new IntPtr();
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//Should not be needed but I'm not sure how to pass NULL in there.
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OVERLAPPED overlapped = new OVERLAPPED();
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//
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PREVENT_MEDIA_REMOVAL preventMediaRemoval = new PREVENT_MEDIA_REMOVAL();
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preventMediaRemoval.PreventMediaRemoval = Convert.ToByte(aPreventRemoval);
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IntPtr preventMediaRemovalParam = MarshalToPointer(preventMediaRemoval);
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bool result = Function.DeviceIoControl(aVolume, Const.IOCTL_STORAGE_MEDIA_REMOVAL, preventMediaRemovalParam, Convert.ToUInt32(Marshal.SizeOf(preventMediaRemoval)), IntPtr.Zero, 0, dwBytesReturned, ref overlapped);
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CheckLastError("Media removal: ");
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Marshal.FreeHGlobal(preventMediaRemovalParam);
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return result;
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}
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/// <summary>
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/// Eject optical drive media opening the tray if any.
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/// </summary>
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/// <param name="aVolume"></param>
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/// <returns></returns>
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private bool MediaEject(SafeFileHandle aVolume)
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{
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//Hope that's doing what I think it does
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IntPtr dwBytesReturned = new IntPtr();
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//Should not be needed but I'm not sure how to pass NULL in there.
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OVERLAPPED overlapped=new OVERLAPPED();
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bool res = Function.DeviceIoControl(aVolume, Const.IOCTL_STORAGE_EJECT_MEDIA, IntPtr.Zero, 0, IntPtr.Zero, 0, dwBytesReturned, ref overlapped);
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CheckLastError("Media eject: ");
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return res;
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}
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StephaneLenclud@151
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278 |
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StephaneLenclud@152
|
279 |
/// <summary>
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StephaneLenclud@154
|
280 |
/// Close an optical drive tray.
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StephaneLenclud@152
|
281 |
/// </summary>
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StephaneLenclud@152
|
282 |
/// <param name="aVolume"></param>
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StephaneLenclud@152
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283 |
/// <returns></returns>
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StephaneLenclud@154
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284 |
private bool MediaLoad(SafeFileHandle aVolume)
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StephaneLenclud@152
|
285 |
{
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StephaneLenclud@152
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286 |
//Hope that's doing what I think it does
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StephaneLenclud@152
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287 |
IntPtr dwBytesReturned = new IntPtr();
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StephaneLenclud@152
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288 |
//Should not be needed but I'm not sure how to pass NULL in there.
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StephaneLenclud@152
|
289 |
OVERLAPPED overlapped=new OVERLAPPED();
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StephaneLenclud@152
|
290 |
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StephaneLenclud@155
|
291 |
bool res = Function.DeviceIoControl(aVolume, Const.IOCTL_STORAGE_LOAD_MEDIA, IntPtr.Zero, 0, IntPtr.Zero, 0, dwBytesReturned, ref overlapped);
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StephaneLenclud@155
|
292 |
CheckLastError("Media load: ");
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StephaneLenclud@155
|
293 |
return res;
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StephaneLenclud@152
|
294 |
}
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StephaneLenclud@152
|
295 |
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StephaneLenclud@154
|
296 |
/// <summary>
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StephaneLenclud@154
|
297 |
///
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StephaneLenclud@154
|
298 |
/// </summary>
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StephaneLenclud@154
|
299 |
/// <param name="aVolume"></param>
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StephaneLenclud@154
|
300 |
/// <returns></returns>
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StephaneLenclud@154
|
301 |
private bool StorageCheckVerify(SafeFileHandle aVolume)
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StephaneLenclud@154
|
302 |
{
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StephaneLenclud@154
|
303 |
//Hope that's doing what I think it does
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StephaneLenclud@154
|
304 |
IntPtr dwBytesReturned = new IntPtr();
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StephaneLenclud@154
|
305 |
//Should not be needed but I'm not sure how to pass NULL in there.
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StephaneLenclud@154
|
306 |
OVERLAPPED overlapped = new OVERLAPPED();
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StephaneLenclud@154
|
307 |
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StephaneLenclud@154
|
308 |
bool res = Function.DeviceIoControl(aVolume, Const.IOCTL_STORAGE_CHECK_VERIFY2, IntPtr.Zero, 0, IntPtr.Zero, 0, dwBytesReturned, ref overlapped);
|
StephaneLenclud@154
|
309 |
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StephaneLenclud@155
|
310 |
CheckLastError("Check verify: ");
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StephaneLenclud@154
|
311 |
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StephaneLenclud@154
|
312 |
return res;
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StephaneLenclud@154
|
313 |
}
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StephaneLenclud@151
|
314 |
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StephaneLenclud@151
|
315 |
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StephaneLenclud@151
|
316 |
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StephaneLenclud@151
|
317 |
/// <summary>
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StephaneLenclud@151
|
318 |
/// Perform media ejection.
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StephaneLenclud@151
|
319 |
/// </summary>
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StephaneLenclud@150
|
320 |
private void HandleEject()
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StephaneLenclud@150
|
321 |
{
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StephaneLenclud@153
|
322 |
string drive = ((MainForm)this).OpticalDriveToEject();
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StephaneLenclud@153
|
323 |
if (drive.Length!=2)
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StephaneLenclud@153
|
324 |
{
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StephaneLenclud@153
|
325 |
//Not a proper drive spec.
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StephaneLenclud@153
|
326 |
//Probably 'None' selected.
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StephaneLenclud@153
|
327 |
return;
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StephaneLenclud@153
|
328 |
}
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StephaneLenclud@153
|
329 |
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StephaneLenclud@153
|
330 |
SafeFileHandle handle = OpenVolume(drive);
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StephaneLenclud@151
|
331 |
if (handle.IsInvalid)
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StephaneLenclud@151
|
332 |
{
|
StephaneLenclud@155
|
333 |
CheckLastError("ERROR: Failed to open volume: ");
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StephaneLenclud@151
|
334 |
return;
|
StephaneLenclud@151
|
335 |
}
|
StephaneLenclud@151
|
336 |
|
StephaneLenclud@151
|
337 |
if (LockVolume(handle) && DismountVolume(handle))
|
StephaneLenclud@151
|
338 |
{
|
StephaneLenclud@154
|
339 |
Debug.WriteLine("Volume was dismounted.");
|
StephaneLenclud@151
|
340 |
|
StephaneLenclud@152
|
341 |
if (PreventRemovalOfVolume(handle,false))
|
StephaneLenclud@151
|
342 |
{
|
StephaneLenclud@156
|
343 |
//StorageCheckVerify(handle);
|
StephaneLenclud@154
|
344 |
|
StephaneLenclud@156
|
345 |
DateTime before;
|
StephaneLenclud@156
|
346 |
before = DateTime.Now;
|
StephaneLenclud@156
|
347 |
bool ejectSuccess = MediaEject(handle);
|
StephaneLenclud@156
|
348 |
double ms = (DateTime.Now - before).TotalMilliseconds;
|
StephaneLenclud@156
|
349 |
|
StephaneLenclud@156
|
350 |
//We assume that if it take more than a certain time to for eject to execute it means we actually ejected.
|
StephaneLenclud@156
|
351 |
//If our eject completes too rapidly we assume the tray is already open and we will try to close it.
|
StephaneLenclud@156
|
352 |
if (ejectSuccess && ms > 100)
|
StephaneLenclud@152
|
353 |
{
|
StephaneLenclud@154
|
354 |
Debug.WriteLine("Media was ejected");
|
StephaneLenclud@152
|
355 |
}
|
StephaneLenclud@154
|
356 |
else if (MediaLoad(handle))
|
StephaneLenclud@154
|
357 |
{
|
StephaneLenclud@154
|
358 |
Debug.WriteLine("Media was loaded");
|
StephaneLenclud@154
|
359 |
}
|
StephaneLenclud@151
|
360 |
}
|
StephaneLenclud@151
|
361 |
}
|
StephaneLenclud@154
|
362 |
else
|
StephaneLenclud@154
|
363 |
{
|
StephaneLenclud@154
|
364 |
Debug.WriteLine("Volume lock or dismount failed.");
|
StephaneLenclud@154
|
365 |
}
|
StephaneLenclud@154
|
366 |
|
StephaneLenclud@154
|
367 |
//This is needed to make sure we can open the volume next time around
|
StephaneLenclud@154
|
368 |
handle.Dispose();
|
StephaneLenclud@150
|
369 |
}
|
StephaneLenclud@150
|
370 |
|
StephaneLenclud@150
|
371 |
/// <summary>
|
StephaneLenclud@150
|
372 |
///
|
StephaneLenclud@150
|
373 |
/// </summary>
|
StephaneLenclud@150
|
374 |
private void HandleGreenStart()
|
StephaneLenclud@150
|
375 |
{
|
StephaneLenclud@150
|
376 |
//First check if the process we want to launch already exists
|
StephaneLenclud@150
|
377 |
string procName = Path.GetFileNameWithoutExtension(Properties.Settings.Default.StartFileName);
|
StephaneLenclud@150
|
378 |
Process[] existingProcesses = Process.GetProcessesByName(procName);
|
StephaneLenclud@150
|
379 |
if (existingProcesses == null || existingProcesses.Length == 0)
|
StephaneLenclud@150
|
380 |
{
|
StephaneLenclud@150
|
381 |
// Process do not exists just try to launch it
|
StephaneLenclud@150
|
382 |
ProcessStartInfo start = new ProcessStartInfo();
|
StephaneLenclud@150
|
383 |
// Enter in the command line arguments, everything you would enter after the executable name itself
|
StephaneLenclud@150
|
384 |
//start.Arguments = arguments;
|
StephaneLenclud@150
|
385 |
// Enter the executable to run, including the complete path
|
StephaneLenclud@150
|
386 |
start.FileName = Properties.Settings.Default.StartFileName;
|
StephaneLenclud@150
|
387 |
start.WindowStyle = ProcessWindowStyle.Normal;
|
StephaneLenclud@150
|
388 |
start.CreateNoWindow = true;
|
StephaneLenclud@150
|
389 |
start.UseShellExecute = true;
|
StephaneLenclud@150
|
390 |
// Run the external process & wait for it to finish
|
StephaneLenclud@150
|
391 |
Process proc = Process.Start(start);
|
StephaneLenclud@150
|
392 |
|
StephaneLenclud@150
|
393 |
//SL: We could have used that too
|
StephaneLenclud@150
|
394 |
//Shell32.Shell shell = new Shell32.Shell();
|
StephaneLenclud@150
|
395 |
//shell.ShellExecute(Properties.Settings.Default.StartFileName);
|
StephaneLenclud@150
|
396 |
}
|
StephaneLenclud@150
|
397 |
else
|
StephaneLenclud@150
|
398 |
{
|
StephaneLenclud@150
|
399 |
//This won't work properly until we have a manifest that enables uiAccess.
|
StephaneLenclud@150
|
400 |
//However uiAccess just won't work with ClickOnce so we will have to use a different deployment system.
|
StephaneLenclud@150
|
401 |
SwitchToThisWindow(existingProcesses[0].MainWindowHandle, true);
|
StephaneLenclud@150
|
402 |
}
|
StephaneLenclud@150
|
403 |
}
|
StephaneLenclud@167
|
404 |
|
StephaneLenclud@167
|
405 |
|
StephaneLenclud@131
|
406 |
/// <summary>
|
StephaneLenclud@131
|
407 |
/// We need to handle WM_INPUT.
|
StephaneLenclud@131
|
408 |
/// </summary>
|
StephaneLenclud@131
|
409 |
/// <param name="message"></param>
|
StephaneLenclud@131
|
410 |
protected override void WndProc(ref Message message)
|
StephaneLenclud@131
|
411 |
{
|
StephaneLenclud@131
|
412 |
switch (message.Msg)
|
StephaneLenclud@131
|
413 |
{
|
StephaneLenclud@131
|
414 |
case Const.WM_INPUT:
|
StephaneLenclud@131
|
415 |
//Returning zero means we processed that message.
|
StephaneLenclud@131
|
416 |
message.Result = new IntPtr(0);
|
StephaneLenclud@131
|
417 |
iHidHandler.ProcessInput(ref message);
|
StephaneLenclud@131
|
418 |
break;
|
StephaneLenclud@131
|
419 |
}
|
StephaneLenclud@159
|
420 |
|
StephaneLenclud@167
|
421 |
//Pass this on to base class.
|
StephaneLenclud@131
|
422 |
base.WndProc(ref message);
|
StephaneLenclud@131
|
423 |
}
|
StephaneLenclud@131
|
424 |
}
|
StephaneLenclud@125
|
425 |
}
|