/// <summary>
/// 键盘钩子处理函数
/// </summary>
/// <param name="nCode"></param>
/// <param name="wParam"></param>
/// <param name="lParam"></param>
/// <returns></returns>
/// <remarks>此版本的键盘事件处理不是很好,还有待修正.</remarks>
private int KeyboardHookProc(int nCode, Int32 wParam, IntPtr lParam)
{
switch (flags)
{
case HookType.shield:
return(1);
case HookType.monitor:
break;
}
bool handled = false;
//it was ok and someone listens to events
if ((nCode >= 0) && (this.OnKeyDown != null || this.OnKeyUp != null || this.OnKeyPress != null))
{
//read structure KeyboardHookStruct at lParam
KeyboardHookStruct MyKeyboardHookStruct = (KeyboardHookStruct)Marshal.PtrToStructure(lParam, typeof(KeyboardHookStruct));
//raise KeyDown
if (this.OnKeyDown != null && (wParam == (int)WM_KEYBOARD.WM_KEYDOWN || wParam == (int)WM_KEYBOARD.WM_SYSKEYDOWN))
{
Keys keyData = (Keys)MyKeyboardHookStruct.VKCode;
KeyEventArgs e = new KeyEventArgs(keyData);
this.OnKeyDown(this, e);
handled = handled || e.Handled;
}
// raise KeyPress
if (this.OnKeyPress != null && wParam == (int)WM_KEYBOARD.WM_KEYDOWN)
{
bool isDownShift, isDownCapslock;
try
{
isDownShift = ((Win32API.GetKeyStates(VK_SHIFT) & 0x80) == 0x80 ? true : false);
isDownCapslock = (Win32API.GetKeyStates(VK_CAPITAL) != 0 ? true : false);
}
catch
{
isDownCapslock = false;
isDownShift = false;
}
byte[] keyState = new byte[256];
Win32API.GetKeyboardState(keyState);
byte[] inBuffer = new byte[2];
if (Win32API.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);
}
KeyPressEventArgs e = new KeyPressEventArgs(key);
this.OnKeyPress(this, e);
handled = handled || e.Handled;
}
}
// raise KeyUp
if (this.OnKeyUp != null && (wParam == (int)WM_KEYBOARD.WM_KEYUP || wParam == (int)WM_KEYBOARD.WM_SYSKEYUP))
{
Keys keyData = (Keys)MyKeyboardHookStruct.VKCode;
KeyEventArgs e = new KeyEventArgs(keyData);
this.OnKeyUp(this, e);
handled = handled || e.Handled;
}
}
//if event handled in application do not handoff to other listeners
if (handled)
{
return(1);
}
else
{
return(Win32API.CallNextHookEx(this.m_pKeyboardHook, nCode, wParam, lParam));
}
}
/// <summary>
/// 钩子类
/// </summary>
/// <remarks>本类仅仅简单实现了 WH_KEYBOARD_LL 以及 WH_MOUSE_LL </remarks>
public KeyboardHook()
{
Win32API.GetKeyboardState(this.m_KeyState);
}
/// <summary>
/// 鼠标钩子处理函数
/// </summary>
/// <param name="nCode"></param>
/// <param name="wParam"></param>
/// <param name="lParam"></param>
/// <returns></returns>
private int MouseHookProc(int nCode, Int32 wParam, IntPtr lParam)
{
/*if ( ( nCode >= 0 ) && ( this.OnMouseUpdate != null )
* && ( wParam == ( int )WM_MOUSE.WM_MOUSEMOVE || wParam == ( int )WM_MOUSE.WM_MOUSEWHEEL ) )
* {
* MouseHookStruct MouseInfo = ( MouseHookStruct )Marshal.PtrToStructure( lParam, typeof( MouseHookStruct ) );
* this.OnMouseUpdate( MouseInfo.Point.X, MouseInfo.Point.Y );
* }*/
//*
if ((nCode >= 0) && (OnMouseActivity != null))
{
//Marshall the data from callback.
MouseHookStruct mouseHookStruct = (MouseHookStruct)Marshal.PtrToStructure(lParam, typeof(MouseHookStruct));
//detect button clicked
MouseButtons button = MouseButtons.None;
short mouseDelta = 0;
switch (wParam)
{
case (int)WM_MOUSE.WM_LBUTTONDOWN:
//case WM_LBUTTONUP:
//case WM_LBUTTONDBLCLK:
button = MouseButtons.Left;
break;
case (int)WM_MOUSE.WM_RBUTTONDOWN:
//case WM_RBUTTONUP:
//case WM_RBUTTONDBLCLK:
button = MouseButtons.Right;
break;
case (int)WM_MOUSE.WM_MOUSEWHEEL:
//If the message is WM_MOUSEWHEEL, the high-order word of mouseData member is the wheel delta.
//One wheel click is defined as WHEEL_DELTA, which is 120.
//(value >> 16) & 0xffff; retrieves the high-order word from the given 32-bit value
mouseDelta = (short)((mouseHookStruct.MouseData >> 16) & 0xffff);
//TODO: X BUTTONS (I havent them so was unable to test)
//If the message is WM_XBUTTONDOWN, WM_XBUTTONUP, WM_XBUTTONDBLCLK, WM_NCXBUTTONDOWN, WM_NCXBUTTONUP,
//or WM_NCXBUTTONDBLCLK, the high-order word specifies which X button was pressed or released,
//and the low-order word is reserved. This value can be one or more of the following values.
//Otherwise, mouseData is not used.
break;
}
//double clicks
int clickCount = 0;
if (button != MouseButtons.None)
{
if (wParam == (int)WM_MOUSE.WM_LBUTTONDBLCLK || wParam == (int)WM_MOUSE.WM_RBUTTONDBLCLK)
{
clickCount = 2;
}
else
{
clickCount = 1;
}
}
//generate event
MouseEventArgs e = new MouseEventArgs(
button,
clickCount,
mouseHookStruct.Point.X,
mouseHookStruct.Point.Y,
mouseDelta);
//raise it
OnMouseActivity(this, e);
}
//*
return(Win32API.CallNextHookEx(this.m_pMouseHook, nCode, wParam, lParam));
}