/// <summary>
/// 判断是否执行键盘的单击操作
/// </summary>
/// <param wParam="IntPtr">键盘的操作值</param>
/// <param lParam="IntPtr">指针</param>
private IntPtr KeyboardHookProc(int nCode, IntPtr wParam, IntPtr lParam)
{
bool handled = false;
EventHandler <KeyExEventArgs> handlerKeyDown = this.Events[EventKeyDown] as EventHandler <KeyExEventArgs>; //实例化键盘的按下操作
EventHandler <KeyExEventArgs> handlerKeyUp = this.Events[EventKeyUp] as EventHandler <KeyExEventArgs>; //实例化键盘的松开操作
EventHandler <KeyPressExEventArgs> handlerKeyPress = this.Events[EventKeyPress] as EventHandler <KeyPressExEventArgs>; //实例化键盘的单击操作
//如果键盘被操作
if ((nCode >= 0) && (handlerKeyDown != null || handlerKeyUp != null || handlerKeyPress != null))
{
//实例化KeyboardHookStruct类
KeyboardHookStruct MyKeyboardHookStruct = (KeyboardHookStruct)Marshal.PtrToStructure(lParam, typeof(KeyboardHookStruct));
//如果键盘按下
if (handlerKeyDown != null && ((int)wParam == WM_KEYDOWN || (int)wParam == WM_SYSKEYDOWN))
{
Keys keyData = (Keys)MyKeyboardHookStruct.vkCode; //获取键值
KeyExEventArgs e = new KeyExEventArgs(keyData, MyKeyboardHookStruct.flags); //实例化KeyExEventArgs
handlerKeyDown(this, e); //执行键盘按下操作
handled = handled || e.Handled; //是否操作
}
if (handlerKeyPress != null && (int)wParam == WM_KEYDOWN) //如果单击键盘
{
bool isDownShift = ((GetKeyState(VK_SHIFT) & 0x80) == 0x80 ? true : false); //判断是否为SHIFT键
bool isDownCapslock = (GetKeyState(VK_CAPITAL) != 0 ? true : false); //判断是否为CAPS LOCK键
byte[] keyState = new byte[256]; //定义字节数组
GetKeyboardState(keyState); //获取虚拟键的当前状态
byte[] inBuffer = new byte[2]; //定义字节数组
//如果可以将虚拟键转换成ASCII字符
if (ToAscii(MyKeyboardHookStruct.vkCode, MyKeyboardHookStruct.scanCode, keyState, inBuffer, MyKeyboardHookStruct.flags) == 1)
{
char key = (char)inBuffer[0]; //获取ASCII字符
if ((isDownCapslock ^ isDownShift) && Char.IsLetter(key)) //如果将其转换成大写
{
key = Char.ToUpper(key); //获取大写的ASCII字符
}
KeyPressExEventArgs e = new KeyPressExEventArgs(key, MyKeyboardHookStruct.flags); //实例化KeyPressExEventArgs
handlerKeyPress(this, e); //执行键盘单击事件
handled = handled || e.Handled; //是否操作
}
}
if (handlerKeyUp != null && ((int)wParam == WM_KEYUP || (int)wParam == WM_SYSKEYUP)) //如果松开键盘
{
Keys keyData = (Keys)MyKeyboardHookStruct.vkCode; //获取键值
KeyExEventArgs e = new KeyExEventArgs(keyData, MyKeyboardHookStruct.flags); //实例化KeyExEventArgs类
handlerKeyUp(this, e); //执行键盘的松开操作
handled = handled || e.Handled; //是否操作
}
}
if (handled)//如果不对当前进行操作
{
return((IntPtr)1);
}
else
{
return(CallNextHookEx(hKeyboardHook, nCode, wParam, lParam));
}
}
private IntPtr KeyboardHookProc(int nCode, IntPtr wParam, IntPtr lParam)
{
//indicates if any of underlaing events set e.Handled flag
bool handled = false;
EventHandler <KeyExEventArgs> handlerKeyDown = this.Events[EventKeyDown] as EventHandler <KeyExEventArgs>;
EventHandler <KeyExEventArgs> handlerKeyUp = this.Events[EventKeyUp] as EventHandler <KeyExEventArgs>;
EventHandler <KeyPressExEventArgs> handlerKeyPress = this.Events[EventKeyPress] as EventHandler <KeyPressExEventArgs>;
//it was ok and someone listens to events
if ((nCode >= 0) && (handlerKeyDown != null || handlerKeyUp != null || handlerKeyPress != null))
{
//read structure KeyboardHookStruct at lParam
KeyboardHookStruct MyKeyboardHookStruct = (KeyboardHookStruct)Marshal.PtrToStructure(lParam, typeof(KeyboardHookStruct));
//raise KeyDown
if (handlerKeyDown != null && ((int)wParam == WM_KEYDOWN || (int)wParam == WM_SYSKEYDOWN))
{
Keys keyData = (Keys)MyKeyboardHookStruct.vkCode;
KeyExEventArgs e = new KeyExEventArgs(keyData, MyKeyboardHookStruct.flags);
handlerKeyDown(this, e);
handled = handled || e.Handled;
}
// raise KeyPress
if (handlerKeyPress != null && (int)wParam == WM_KEYDOWN)
{
bool isDownShift = ((GetKeyState(VK_SHIFT) & 0x80) == 0x80 ? true : false);
bool isDownCapslock = (GetKeyState(VK_CAPITAL) != 0 ? true : false);
byte[] keyState = new byte[256];
GetKeyboardState(keyState);
byte[] inBuffer = new byte[2];
if (ToAscii(MyKeyboardHookStruct.vkCode,
MyKeyboardHookStruct.scanCode,
keyState,
inBuffer,
MyKeyboardHookStruct.flags) == 1)
{
char key = (char)inBuffer[0];
if ((isDownCapslock ^ isDownShift) && Char.IsLetter(key))
{
key = Char.ToUpper(key);
}
KeyPressExEventArgs e = new KeyPressExEventArgs(key, MyKeyboardHookStruct.flags);
handlerKeyPress(this, e);
handled = handled || e.Handled;
}
}
// raise KeyUp
if (handlerKeyUp != null && ((int)wParam == WM_KEYUP || (int)wParam == WM_SYSKEYUP))
{
Keys keyData = (Keys)MyKeyboardHookStruct.vkCode;
KeyExEventArgs e = new KeyExEventArgs(keyData, MyKeyboardHookStruct.flags);
handlerKeyUp(this, e);
handled = handled || e.Handled;
}
}
//if event handled in application do not handoff to other listeners
if (handled)
{
return((IntPtr)1);
}
else
{
return(CallNextHookEx(hKeyboardHook, nCode, wParam, lParam));
}
}
private IntPtr KeyboardHookProc(int nCode, IntPtr wParam, IntPtr lParam)
{
//indicates if any of underlaing events set e.Handled flag
bool handled = false;
EventHandler<KeyExEventArgs> handlerKeyDown = this.Events[EventKeyDown] as EventHandler<KeyExEventArgs>;
EventHandler<KeyExEventArgs> handlerKeyUp = this.Events[EventKeyUp] as EventHandler<KeyExEventArgs>;
EventHandler<KeyPressExEventArgs> handlerKeyPress = this.Events[EventKeyPress] as EventHandler<KeyPressExEventArgs>;
//it was ok and someone listens to events
if ((nCode >= 0) && (handlerKeyDown != null || handlerKeyUp != null || handlerKeyPress != null)) {
//read structure KeyboardHookStruct at lParam
KeyboardHookStruct MyKeyboardHookStruct = (KeyboardHookStruct)Marshal.PtrToStructure(lParam, typeof(KeyboardHookStruct));
//raise KeyDown
if (handlerKeyDown != null && ((int)wParam == WM_KEYDOWN || (int)wParam == WM_SYSKEYDOWN)) {
Keys keyData = (Keys)MyKeyboardHookStruct.vkCode;
KeyExEventArgs e = new KeyExEventArgs(keyData, MyKeyboardHookStruct.flags);
handlerKeyDown(this, e);
handled = handled || e.Handled;
}
// raise KeyPress
if (handlerKeyPress != null && (int)wParam == WM_KEYDOWN) {
bool isDownShift = ((GetKeyState(VK_SHIFT) & 0x80) == 0x80 ? true : false);
bool isDownCapslock = (GetKeyState(VK_CAPITAL) != 0 ? true : false);
byte[] keyState = new byte[256];
GetKeyboardState(keyState);
byte[] inBuffer = new byte[2];
if (ToAscii(MyKeyboardHookStruct.vkCode,
MyKeyboardHookStruct.scanCode,
keyState,
inBuffer,
MyKeyboardHookStruct.flags) == 1) {
char key = (char)inBuffer[0];
if ((isDownCapslock ^ isDownShift) && Char.IsLetter(key))
key = Char.ToUpper(key);
KeyPressExEventArgs e = new KeyPressExEventArgs(key, MyKeyboardHookStruct.flags);
handlerKeyPress(this, e);
handled = handled || e.Handled;
}
}
// raise KeyUp
if (handlerKeyUp != null && ((int)wParam == WM_KEYUP || (int)wParam == WM_SYSKEYUP)) {
Keys keyData = (Keys)MyKeyboardHookStruct.vkCode;
KeyExEventArgs e = new KeyExEventArgs(keyData, MyKeyboardHookStruct.flags);
handlerKeyUp(this, e);
handled = handled || e.Handled;
}
}
//if event handled in application do not handoff to other listeners
if (handled)
return (IntPtr)1;
else
return CallNextHookEx(hKeyboardHook, nCode, wParam, lParam);
}