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141 lines (121 loc) · 4.5 KB
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using KeyboardIndicator.Properties;
using System;
using System.Configuration;
using System.Runtime.InteropServices;
using System.Threading;
using System.Windows.Forms;
namespace KeyboardIndicator
{
public partial class KeyboardIndicator : Form
{
public delegate int HookProc(int nCode, int wParam, IntPtr lParam);
[StructLayout(LayoutKind.Sequential)]
public class KeyBoardHookStruct
{
public int vkCode;
public int scanCode;
public int flags;
public int time;
public int dwExtraInfo;
}
private const int WH_KEYBOARD_LL = 13;
private const int WM_KEYDOWN = 256;
private const int NUM_KEYCODE = 144;//Num Lock键：VK_NUMLOCK (144)
private const int CAPS_KEYCODE = 20;//Caps Lock键：VK_CAPITAL (20)
private KeyboardIndicator.KeyBoardHookStruct kbh;
private KeyboardIndicator.HookProc gHookProc;
private int curCount;
private bool isRunning;
[DllImport("user32.dll")]
public static extern short GetKeyState(int nVirtKey);
[DllImport("user32.dll")]
public static extern int SetWindowsHookEx(int idHook, KeyboardIndicator.HookProc lpfn, IntPtr hInstance, int threadId);
private bool showNumLock = false;
private bool showCapsLock = false;
public KeyboardIndicator()
{
InitializeComponent();
try
{
showNumLock = ConfigurationManager.AppSettings["NumLock"].ToUpper() == "Y";
}
catch (Exception)
{
showNumLock = false;
}
try
{
showCapsLock = ConfigurationManager.AppSettings["CapsLock"].ToUpper() == "Y";
}
catch (Exception)
{
showCapsLock = false;
}
if (!showNumLock && !showCapsLock)
{
showNumLock = true;
}
this.SetStatus();
this.gHookProc = new KeyboardIndicator.HookProc(this.KeyBoardHookProc);
KeyboardIndicator.SetWindowsHookEx(WH_KEYBOARD_LL, this.gHookProc, IntPtr.Zero, 0);
}
private void notifyIcon_MouseDoubleClick(object sender, MouseEventArgs e)
{
this.Close();
this.Dispose(true);
Application.ExitThread();
}
public int KeyBoardHookProc(int nCode, int wParam, IntPtr lParam)
{
this.kbh = (KeyboardIndicator.KeyBoardHookStruct)Marshal.PtrToStructure(lParam, typeof(KeyboardIndicator.KeyBoardHookStruct));
if (!this.isRunning && (this.kbh.vkCode == NUM_KEYCODE || this.kbh.vkCode == CAPS_KEYCODE))
{
ThreadPool.QueueUserWorkItem(delegate(object param0)
{
this.isRunning = true;
this.curCount = 200;
while (this.curCount > 0)
{
this.SetStatus();
Thread.Sleep(20);
this.curCount--;
}
this.curCount = 0;
this.isRunning = false;
});
}
return 0;
}
private void SetStatus()
{
this.notifyIconNUM.Visible = showNumLock;
this.notifyIconCAPS.Visible = showCapsLock;
if (showNumLock)
{
if (KeyboardIndicator.GetKeyState(NUM_KEYCODE) != 0)
{
this.notifyIconNUM.Icon = Resources.NumLockOpen;
this.notifyIconNUM.Text = "NumLock On";
}
else
{
this.notifyIconNUM.Icon = Resources.NumLockClose;
this.notifyIconNUM.Text = "NumLock Off";
}
}
if (showCapsLock)
{
if (KeyboardIndicator.GetKeyState(CAPS_KEYCODE) != 0)
{
this.notifyIconCAPS.Icon = Resources.CapsLockOpen;
this.notifyIconCAPS.Text = "CapsLock On";
}
else
{
this.notifyIconCAPS.Icon = Resources.CapsLockClose;
this.notifyIconCAPS.Text = "CapsLock Off";
}
}
}
}
}