实例介绍
【实例简介】虚拟键盘，键盘监控器，键盘坏键检测器，可以用作直播时键盘的监听器，也可以当作盲打练习器
透明风格，迷你小巧，
【实例截图】
【核心代码】using System;
using System.Collections.Generic;
using System.Runtime.InteropServices;
using System.Windows.Forms;
using System.ComponentModel;
using System.Drawing;
namespace CnBlogs.Youzai.ScreenKeyboard {
public partial class ScreenKeyboard : FormBase {
private HookEx.UserActivityHook hook;
private static readonly IDictionary<string, string> keyPairs;
private static readonly IDictionary<string, string> numKeyPairs;
private static IDictionary<short, IList<KeyboardButton>> spacialVKButtonsMap;
private static IDictionary<short, IList<KeyboardButton>> combinationVKButtonsMap;
#region Key Pairs
static ScreenKeyboard() {
keyPairs = new Dictionary<string, string>();
keyPairs.Add("1", "!");
keyPairs.Add("2", "@");
keyPairs.Add("3", "#");
keyPairs.Add("4", "$");
keyPairs.Add("5", "%");
keyPairs.Add("6", "^");
keyPairs.Add("7", "&&");
keyPairs.Add("8", "*");
keyPairs.Add("9", "(");
keyPairs.Add("0", ")");
keyPairs.Add("`", "~");
keyPairs.Add("-", "_");
keyPairs.Add("=", " ");
keyPairs.Add("\\", "|");
keyPairs.Add("[", "{");
keyPairs.Add("]", "}");
keyPairs.Add(";", ":");
keyPairs.Add("'", "\"");
keyPairs.Add(",", "<");
keyPairs.Add(".", ">");
keyPairs.Add("/", "?");
numKeyPairs = new Dictionary<string, string>();
numKeyPairs.Add("1", "end");
numKeyPairs.Add("2", "↓");
numKeyPairs.Add("3", "pdn");
numKeyPairs.Add("4", "←");
numKeyPairs.Add("5", string.Empty);
numKeyPairs.Add("6", "→");
numKeyPairs.Add("7", "hm");
numKeyPairs.Add("8", "↑");
numKeyPairs.Add("9", "pup");
numKeyPairs.Add("0", "ins");
}
#endregion
public ScreenKeyboard() {
InitializeComponent();
base.TopMost = true;
base.StartPosition = FormStartPosition.CenterScreen;
this.lightCapsLock.AssositeButton = this.btnLOCK;
this.lightNumLock.AssositeButton = this.btnNLK;
this.lightScrollLock.AssositeButton = this.btnSLK;
#region Initialize VK Button maps
spacialVKButtonsMap = new Dictionary<short, IList<KeyboardButton>>();
combinationVKButtonsMap = new Dictionary<short, IList<KeyboardButton>>();
IList<KeyboardButton> buttonList = new List<KeyboardButton>();
buttonList.Add(this.btnLCTRL);
buttonList.Add(this.btnRCTRL);
combinationVKButtonsMap.Add(KeyboardConstaint.VK_CONTROL, buttonList);
buttonList = new List<KeyboardButton>();
buttonList.Add(this.btnLSHFT);
buttonList.Add(this.btnRSHFT);
combinationVKButtonsMap.Add(KeyboardConstaint.VK_SHIFT, buttonList);
buttonList = new List<KeyboardButton>();
buttonList.Add(this.btnLALT);
buttonList.Add(this.btnRALT);
combinationVKButtonsMap.Add(KeyboardConstaint.VK_MENU, buttonList);
buttonList = new List<KeyboardButton>();
buttonList.Add(this.btnLW);
buttonList.Add(this.btnRW);
combinationVKButtonsMap.Add(KeyboardConstaint.VK_LWIN, buttonList);
buttonList = new List<KeyboardButton>();
buttonList.Add(this.btnLOCK);
spacialVKButtonsMap.Add(KeyboardConstaint.VK_CAPITAL, buttonList);
buttonList = new List<KeyboardButton>();
buttonList.Add(this.btnNLK);
spacialVKButtonsMap.Add(KeyboardConstaint.VK_NUMLOCK, buttonList);
buttonList = new List<KeyboardButton>();
buttonList.Add(this.btnSLK);
spacialVKButtonsMap.Add(KeyboardConstaint.VK_SCROLL, buttonList);
#endregion
foreach (Control ctrl in this.Controls) {
KeyboardButton button = ctrl as KeyboardButton;
if (button == null) {
continue;
}
#region Set virtual keycode
short key = 0;
bool isSpacialKey = true;
switch (button.Name) {
case "btnLCTRL":
case "btnRCTRL":
key = KeyboardConstaint.VK_CONTROL;
break;
case "btnLSHFT":
case "btnRSHFT":
key = KeyboardConstaint.VK_SHIFT;
break;
case "btnLALT":
case "btnRALT":
key = KeyboardConstaint.VK_MENU;
break;
case "btnLW":
case "btnRW":
key = KeyboardConstaint.VK_LWIN;
break;
case "btnESC":
key = KeyboardConstaint.VK_ESCAPE;
break;
case "btnTAB":
key = KeyboardConstaint.VK_TAB;
break;
case "btnF1":
key = KeyboardConstaint.VK_F1;
break;
case "btnF2":
key = KeyboardConstaint.VK_F2;
break;
case "btnF3":
key = KeyboardConstaint.VK_F3;
break;
case "btnF4":
key = KeyboardConstaint.VK_F4;
break;
case "btnF5":
key = KeyboardConstaint.VK_F5;
break;
case "btnF6":
key = KeyboardConstaint.VK_F6;
break;
case "btnF7":
key = KeyboardConstaint.VK_F7;
break;
case "btnF8":
key = KeyboardConstaint.VK_F8;
break;
case "btnF9":
key = KeyboardConstaint.VK_F9;
break;
case "btnF10":
key = KeyboardConstaint.VK_F10;
break;
case "btnF11":
key = KeyboardConstaint.VK_F11;
break;
case "btnF12":
key = KeyboardConstaint.VK_F12;
break;
case "btnENT":
case "btnNUMENT":
key = KeyboardConstaint.VK_RETURN;
break;
case "btnWave":
key = KeyboardConstaint.VK_OEM_3;
break;
case "btnSem":
key = KeyboardConstaint.VK_OEM_1;
break;
case "btnQute":
key = KeyboardConstaint.VK_OEM_7;
break;
case "btnSpace":
key = KeyboardConstaint.VK_SPACE;
break;
case "btnBKSP":
key = KeyboardConstaint.VK_BACK;
break;
case "btnComma":
key = KeyboardConstaint.VK_OEM_COMMA;
break;
case "btnFullStop":
key = KeyboardConstaint.VK_OEM_PERIOD;
break;
case "btnLOCK":
key = KeyboardConstaint.VK_CAPITAL;
break;
case "btnMinus":
key = KeyboardConstaint.VK_OEM_MINUS;
break;
case "btnEqual":
key = KeyboardConstaint.VK_OEM_PLUS;
break;
case "btnLBracket":
key = KeyboardConstaint.VK_OEM_4;
break;
case "btnRBracket":
key = KeyboardConstaint.VK_OEM_6;
break;
case "btnPath":
key = KeyboardConstaint.VK_OEM_5;
break;
case "btnDivide":
key = KeyboardConstaint.VK_OEM_2;
break;
case "btnMU":
key = KeyboardConstaint.VK_APPS;
break;
case "btnPSC":
key = KeyboardConstaint.VK_SNAPSHOT;
break;
case "btnSLK":
key = KeyboardConstaint.VK_SCROLL;
break;
case "btnBRK":
key = KeyboardConstaint.VK_PAUSE;
break;
case "btnINS":
key = KeyboardConstaint.VK_INSERT;
break;
case "btnHM":
key = KeyboardConstaint.VK_HOME;
break;
case "btnPUP":
key = KeyboardConstaint.VK_PRIOR;
break;
case "btnDEL":
key = KeyboardConstaint.VK_DELETE;
break;
case "btnEND":
key = KeyboardConstaint.VK_END;
break;
case "btnPDN":
key = KeyboardConstaint.VK_NEXT;
break;
case "btnUP":
key = KeyboardConstaint.VK_UP;
break;
case "btnDN":
key = KeyboardConstaint.VK_DOWN;
break;
case "btnLA":
key = KeyboardConstaint.VK_LEFT;
break;
case "btnRA":
key = KeyboardConstaint.VK_RIGHT;
break;
case "btnNUM0":
key = KeyboardConstaint.VK_NUMPAD0;
break;
case "btnNUM1":
key = KeyboardConstaint.VK_NUMPAD1;
break;
case "btnNUM2":
key = KeyboardConstaint.VK_NUMPAD2;
break;
case "btnNUM3":
key = KeyboardConstaint.VK_NUMPAD3;
break;
case "btnNUM4":
key = KeyboardConstaint.VK_NUMPAD4;
break;
case "btnNUM5":
key = KeyboardConstaint.VK_NUMPAD5;
break;
case "btnNUM6":
key = KeyboardConstaint.VK_NUMPAD6;
break;
case "btnNUM7":
key = KeyboardConstaint.VK_NUMPAD7;
break;
case "btnNUM8":
key = KeyboardConstaint.VK_NUMPAD8;
break;
case "btnNUM9":
key = KeyboardConstaint.VK_NUMPAD9;
break;
case "btnNLK":
key = KeyboardConstaint.VK_NUMLOCK;
break;
case "btnNUMDivide":
key = KeyboardConstaint.VK_DIVIDE;
break;
case "btnMultiply":
key = KeyboardConstaint.VK_MULTIPLY;
break;
case "btnNUMPlus":
key = KeyboardConstaint.VK_ADD;
break;
case "btnNUMMinus":
key = KeyboardConstaint.VK_SUBTRACT;
break;
case "btnNUMDot":
key = KeyboardConstaint.VK_DECIMAL;
break;
default:
isSpacialKey = false;
break;
}
if (!isSpacialKey) {
key = (short)button.Name[3];
}
button.VKCode = key;
#endregion
button.Click = ButtonOnClick;
}
this.hook = new HookEx.UserActivityHook(true, true);
HookEvents(true);
}
private void HookEvents(bool hook) {
if (hook) {
this.hook.KeyDown = HookOnGlobalKeyDown;
this.hook.KeyUp = HookOnGlobalKeyUp;
this.hook.MouseActivity = HookOnMouseActivity;
} else {
this.hook.KeyDown -= HookOnGlobalKeyDown;
this.hook.KeyUp -= HookOnGlobalKeyUp;
this.hook.MouseActivity -= HookOnMouseActivity;
}
}
protected override void OnLoad(EventArgs e) {
SetButtonStatus();
if (!this.lightNumLock.On) {
short key = KeyboardConstaint.VK_NUMLOCK;
SendKeyDown(key);
SendKeyUp(key);
}
base.OnLoad(e);
}
protected override bool ProcessCmdKey(ref Message msg, Keys keyData) {
if (msg.Msg == 0x100 && keyData == Keys.Escape) {
this.Close();
return true;
}
return base.ProcessCmdKey(ref msg, keyData);
}
private void MenuItemOnClick(object sender, EventArgs e) {
if (object.ReferenceEquals(sender, this.menuItemExit)) {
this.Close();
} else if (object.ReferenceEquals(sender, this.menuItemAbout)) {
AboutBox aboutBox = new AboutBox();
aboutBox.ShowDialog(this);
}
}
protected override void OnClosing(CancelEventArgs e) {
foreach (KeyValuePair<short, IList<KeyboardButton>> entry in combinationVKButtonsMap) {
IList<KeyboardButton> buttonList = entry.Value;
if (buttonList[0].Checked) {
SendKeyUp(entry.Key);
}
}
base.OnClosing(e);
}
private void ButtonOnClick(object sender, EventArgs e) {
KeyboardButton btnKey = sender as KeyboardButton;
if (btnKey == null) {
return;
}
SendKeyCommand(btnKey);
}
private void SendKeyCommand(KeyboardButton keyButton) {
short key = keyButton.VKCode;
if (combinationVKButtonsMap.ContainsKey(key)) {
if (keyButton.Checked) {
SendKeyUp(key);
} else {
SendKeyDown(key);
}
} else {
SendKeyDown(key);
SendKeyUp(key);
}
}
private void SendKeyDown(short key) {
Input[] input = new Input[1];
input[0].type = INPUT.KEYBOARD;
input[0].ki.wVk = key;
input[0].ki.time = NativeMethods.GetTickCount();
if (NativeMethods.SendInput((uint)input.Length, input, Marshal.SizeOf(input[0])) < input.Length) {
throw new Win32Exception(Marshal.GetLastWin32Error());
}
}
private void SendKeyUp(short key) {
Input[] input = new Input[1];
input[0].type = INPUT.KEYBOARD;
input[0].ki.wVk = key;
input[0].ki.dwFlags = KeyboardConstaint.KEYEVENTF_KEYUP;
input[0].ki.time = NativeMethods.GetTickCount();
if (NativeMethods.SendInput((uint)input.Length, input, Marshal.SizeOf(input[0])) < input.Length) {
throw new Win32Exception(Marshal.GetLastWin32Error());
}
}
private void HookOnGlobalKeyDown(object sender, HookEx.KeyExEventArgs e) {
SetButtonStatus(e, true);
}
private void HookOnGlobalKeyUp(object sender, HookEx.KeyExEventArgs e) {
SetButtonStatus(e, false);
}
private void HookOnMouseActivity(object sener, HookEx.MouseExEventArgs e) {
Point location = e.Location;
if (e.Button == MouseButtons.Left) {
Rectangle captionRect = new Rectangle(this.Location, new Size(this.Width, SystemInformation.CaptionHeight));
if (captionRect.Contains(location)) {
NativeMethods.SetWindowLong(this.Handle, KeyboardConstaint.GWL_EXSTYLE,
(int)NativeMethods.GetWindowLong(this.Handle, KeyboardConstaint.GWL_EXSTYLE) & (~KeyboardConstaint.WS_DISABLED));
NativeMethods.SendMessage(this.Handle, KeyboardConstaint.WM_SETFOCUS, IntPtr.Zero, IntPtr.Zero);
} else {
NativeMethods.SetWindowLong(this.Handle, KeyboardConstaint.GWL_EXSTYLE,
(int)NativeMethods.GetWindowLong(this.Handle, KeyboardConstaint.GWL_EXSTYLE) | KeyboardConstaint.WS_DISABLED);
}
}
}
private void SetButtonStatus(HookEx.KeyExEventArgs args, bool isDown) {
IList<KeyboardButton> buttonList = FindButtonList(args);
if (buttonList.Count <= 0) {
return;
}
short key = (short)args.KeyValue;
if (spacialVKButtonsMap.ContainsKey(key)) {
if (!isDown) {
KeyboardButton button = spacialVKButtonsMap[key][0];
button.Checked = !button.Checked;
}
} else {
foreach (KeyboardButton button in buttonList) {
button.Checked = isDown;
}
}
SetButtonText();
}
private IList<KeyboardButton> FindButtonList(HookEx.KeyExEventArgs args) {
short key = (short)args.KeyValue;
if (key == KeyboardConstaint.VK_LCONTROL || key == KeyboardConstaint.VK_RCONTROL) {
key = KeyboardConstaint.VK_CONTROL;
} else if (key == KeyboardConstaint.VK_LSHIFT || key == KeyboardConstaint.VK_RSHIFT) {
key = KeyboardConstaint.VK_SHIFT;
} else if (key == KeyboardConstaint.VK_LMENU || key == KeyboardConstaint.VK_RMENU) {
key = KeyboardConstaint.VK_MENU;
} else if (key == KeyboardConstaint.VK_RWIN) {
key = KeyboardConstaint.VK_LWIN;
}
if (combinationVKButtonsMap.ContainsKey(key)) {
return combinationVKButtonsMap[key];
}
IList<KeyboardButton> buttonList = new List<KeyboardButton>();
foreach (Control ctrl in this.Controls) {
KeyboardButton button = ctrl as KeyboardButton;
if (button == null) {
continue;
}
short theKey = button.VKCode;
if (theKey == key) {
IDictionary<KeyboardButton, KeyboardButton> buttonMap = new Dictionary<KeyboardButton, KeyboardButton>();
buttonMap.Add(this.btnENT, this.btnNUMENT);
buttonMap.Add(this.btnNUM0, this.btnINS);
buttonMap.Add(this.btnNUMDot, this.btnDEL);
buttonMap.Add(this.btnNUM1, this.btnEND);
buttonMap.Add(this.btnNUM2, this.btnDN);
buttonMap.Add(this.btnNUM3, this.btnPDN);
buttonMap.Add(this.btnNUM4, this.btnLA);
buttonMap.Add(this.btnNUM6, this.btnRA);
buttonMap.Add(this.btnNUM7, this.btnHM);
buttonMap.Add(this.btnNUM8, this.btnUP);
buttonMap.Add(this.btnNUM9, this.btnPUP);
if (buttonMap.ContainsKey(button)) {
if ((args.Flags & 0x00000001) == 0) {
buttonList.Add(button);
} else {
buttonList.Add(buttonMap[button]);
}
} else if (buttonMap.Values.Contains(button)) {
if ((args.Flags & 0x00000001) == 0) {
KeyboardButton keyButton = null;
foreach (KeyValuePair<KeyboardButton, KeyboardButton> entry in buttonMap) {
if (object.ReferenceEquals(entry.Value, button)) {
keyButton = entry.Key;
break;
}
}
if (keyButton != null) {
buttonList.Add(keyButton);
}
} else {
buttonList.Add(button);
}
} else {
buttonList.Add(button);
}
}
}
return buttonList;
}
private void SetButtonStatus() {
foreach (KeyValuePair<short, IList<KeyboardButton>> entry in spacialVKButtonsMap) {
bool isOn = IsSPactialKeyOn(entry.Key);
foreach (KeyboardButton button in entry.Value) {
button.Checked = isOn;
}
}
foreach (KeyValuePair<short, IList<KeyboardButton>> entry in combinationVKButtonsMap) {
bool isDown = IsCommonKeyOn(entry.Key);
foreach (KeyboardButton button in entry.Value) {
button.Checked = isDown;
}
}
SetButtonText();
}
private void SetButtonText() {
bool isShifOn = this.btnLSHFT.Checked;
bool isCapsLockOn = this.btnLOCK.Checked;
bool isNumLock = this.btnNLK.Checked;
foreach (Control ctrl in this.Controls) {
Button button = ctrl as Button;
if (button == null)
continue;
string buttonName = button.Name;
if (buttonName.Length == 4) {
if (char.IsDigit(buttonName[3])) {
// such as btn2
button.Text = isShifOn ? keyPairs[buttonName[3].ToString()] : buttonName[3].ToString();
} else {
// such as btnA
bool shouldShowUpper = isShifOn ^ isCapsLockOn;
button.Text = shouldShowUpper ? buttonName[3].ToString() : buttonName[3].ToString().ToLower();
}
} else if (buttonName.IndexOf("btnNUM") >= 0 && buttonName.Length > 6 && char.IsDigit(buttonName[6])) {
// such as btnNUM2
if (isNumLock) {
button.Text = buttonName[6].ToString();
ReverseNumPad(true);
} else {
button.Text = numKeyPairs[buttonName[6].ToString()];
ReverseNumPad(false);
}
} else if (string.Equals(buttonName, "btnNUMDot")) {
button.Text = isNumLock ? "." : "del";
} else {
IDictionary<string, string> buttonNameTextMaps = new Dictionary<string, string>();
buttonNameTextMaps.Add("btnWave", "`");
buttonNameTextMaps.Add("btnMinus", "-");
buttonNameTextMaps.Add("btnLBracket", "[");
buttonNameTextMaps.Add("btnRBracket", "]");
buttonNameTextMaps.Add("btnPath", "\\");
buttonNameTextMaps.Add("btnSem", ";");
buttonNameTextMaps.Add("btnQute", "'");
buttonNameTextMaps.Add("btnComma", ",");
buttonNameTextMaps.Add("btnFullStop", ".");
buttonNameTextMaps.Add("btnDivide", "/");
if (buttonNameTextMaps.ContainsKey(buttonName)) {
button.Text = isShifOn ? keyPairs[buttonNameTextMaps[buttonName]] : buttonNameTextMaps[buttonName];
}
}
}
}
private bool IsCommonKeyOn(short key) {
short keyState = NativeMethods.GetKeyState(key);
return (keyState & 0XFF80) == 0XFF80;
}
private bool IsSPactialKeyOn(short key) {
short keyState = NativeMethods.GetKeyState(key);
return (keyState & 0X0001) == 0X0001;
}
private void ReverseNumPad(bool isNumLock) {
if (isNumLock) {
this.btnNUM0.VKCode = KeyboardConstaint.VK_NUMPAD0;
this.btnNUMDot.VKCode = KeyboardConstaint.VK_DECIMAL;
this.btnNUM1.VKCode = KeyboardConstaint.VK_NUMPAD1;
this.btnNUM2.VKCode = KeyboardConstaint.VK_NUMPAD2;
this.btnNUM3.VKCode = KeyboardConstaint.VK_NUMPAD3;
this.btnNUM4.VKCode = KeyboardConstaint.VK_NUMPAD4;
this.btnNUM5.VKCode = KeyboardConstaint.VK_NUMPAD5;
this.btnNUM6.VKCode = KeyboardConstaint.VK_NUMPAD6;
this.btnNUM7.VKCode = KeyboardConstaint.VK_NUMPAD7;
this.btnNUM8.VKCode = KeyboardConstaint.VK_NUMPAD8;
this.btnNUM9.VKCode = KeyboardConstaint.VK_NUMPAD9;
} else {
this.btnNUM0.VKCode = KeyboardConstaint.VK_INSERT;
this.btnNUMDot.VKCode = KeyboardConstaint.VK_OEM_PERIOD;
this.btnNUM1.VKCode = KeyboardConstaint.VK_END;
this.btnNUM2.VKCode = KeyboardConstaint.VK_DOWN;
this.btnNUM3.VKCode = KeyboardConstaint.VK_NEXT;
this.btnNUM4.VKCode = KeyboardConstaint.VK_LEFT;
this.btnNUM5.VKCode = KeyboardConstaint.VK_NUMPAD5NOTHING;
this.btnNUM6.VKCode = KeyboardConstaint.VK_RIGHT;
this.btnNUM7.VKCode = KeyboardConstaint.VK_HOME;
this.btnNUM8.VKCode = KeyboardConstaint.VK_UP;
this.btnNUM9.VKCode = KeyboardConstaint.VK_PRIOR;
}
}
private void ScreenKeyboard_Load(object sender, EventArgs e)
{
}
private void pictureBox1_Click(object sender, EventArgs e)
{
}
private void label1_Click(object sender, EventArgs e)
{
System.Environment.Exit(0);
}
private void btnESC_Click(object sender, EventArgs e)
{
pictureBox2.Visible = true;
}
}
}
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