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using System;
using System.Windows;
using System.Windows.Forms;
using System.Windows.Interop;
using Application=System.Windows.Application;
namespace WindowsApplication1
{
public partial class Window1
{
RawStuff.InputDevice id;
int NumberOfKeyboards;
Message message = new Message();
public Window1()
{
Activate();
}
private void _KeyPressed(object sender, RawStuff.InputDevice.KeyControlEventArgs e)
{
string[] tokens = e.Keyboard.Name.Split(';');
string token = tokens[1];
lbHandle.Content = e.Keyboard.deviceHandle.ToString();
lbType.Content = e.Keyboard.deviceType;
lbName.Content = e.Keyboard.deviceName;
lbKey.Content = e.Keyboard.key.ToString();
lbVKey.Content = e.Keyboard.vKey;
lbDescription.Content = token;
lbNumKeyboards.Content = NumberOfKeyboards.ToString();
}
public IntPtr WndProc(IntPtr hwnd, int msg, IntPtr wParam, IntPtr lParam, ref bool handled)
{
if (id != null)
{
// I could have done one of two things here.
// 1. Use a Message as it was used before.
// 2. Changes the ProcessMessage method to handle all of these parameters(more work).
// I opted for the easy way.
//Note: Depending on your application you may or may not want to set the handled param.
message.HWnd = hwnd;
message.Msg = msg;
message.LParam = lParam;
message.WParam = wParam;
id.ProcessMessage(message);
}
return IntPtr.Zero;
}
protected override void OnSourceInitialized(EventArgs e)
{
// I am new to WPF and I don't know where else to call this function.
// It has to be called after the window is created or the handle won't
// exist yet and the function will throw an exception.
StartWndProcHandler();
base.OnSourceInitialized(e);
}
void StartWndProcHandler()
{
IntPtr hwnd = IntPtr.Zero;
Window myWin = Application.Current.MainWindow;
try
{
hwnd = new WindowInteropHelper(myWin).Handle;
}
catch (Exception ex)
{
Console.WriteLine(ex);
}
//Get the Hwnd source
HwndSource source = HwndSource.FromHwnd(hwnd);
//Win32 queue sink
source.AddHook(new HwndSourceHook(WndProc));
id = new RawStuff.InputDevice(source.Handle);
NumberOfKeyboards = id.EnumerateDevices();
id.KeyPressed += new RawStuff.InputDevice.DeviceEventHandler(_KeyPressed);
}
void CloseMe(object sender, RoutedEventArgs e)
{
Close();
}
}
}
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Emma's first steps in programming took place at primary school over thirty years ago, thanks to a TI-99/4A and the LOGO language. Following a Master's degree in English Studies (obtained, strangely enough, with a paper on the birth of the microcomputer), Emma started her career in IT.
Over the last ten years, she has worked as a localiser, technical writer, editor, web designer, systems administrator, team leader and support engineer, before finally making the move into software development a few years ago. She is now thrilled on a daily basis that she is getting paid for writing code after doing it for free half her life!
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