/// <summary>
/// 安装钩子
/// </summary>
/// <returns></returns>
public virtual bool InstallHook()
{
IntPtr pInstance = Marshal.GetHINSTANCE(Assembly.GetExecutingAssembly().ManifestModule);
if (this._hook == IntPtr.Zero)
{
this._hookHandler = new HookProc(HookProc);
this._hook = Win32Helper.SetWindowsHookEx(HookType, this._hookHandler, pInstance, 0);
if (this._hook == IntPtr.Zero)
{
this.UnInstallHook();
return(false);
}
}
return(true);
}
/// <summary>
/// Procedure for mouse hook
/// </summary>
/// <param name="nCode"></param>
/// <param name="wParam"></param>
/// <param name="lParam"></param>
/// <returns></returns>
protected override int HookProc(int nCode, Int32 wParam, IntPtr lParam)
{
if (nCode >= 0)
{
//Try to disable mouse actions.
if (DisableMove)
{
return(1);
}
else if (DisableWheel & wParam == (int)WM_MOUSE.WM_MOUSEWHEEL)
{
return(1);
}
else if (DisableButton)
{
if (wParam != (int)WM_MOUSE.WM_MOUSEFIRST && wParam != (int)WM_MOUSE.WM_MOUSEMOVE && wParam != (int)WM_MOUSE.WM_MOUSEWHEEL)
{
return(1);
}
}
}
if ((nCode >= 0) && (OnMouseActivity != null))
{
//Marshall the data from callback.
MouseHookStruct hookStruct = (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 (int)WM_MOUSE.WM_LBUTTONUP:
case (int)WM_MOUSE.WM_LBUTTONDBLCLK:
button = MouseButtons.Left;
break;
case (int)WM_MOUSE.WM_RBUTTONDOWN:
case (int)WM_MOUSE.WM_RBUTTONUP:
case (int)WM_MOUSE.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)((hookStruct.MouseData >> 16) & 0xffff);
break;
//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.
}
//double clicks
int clickCount = 0;
if (button != MouseButtons.None)
{
if (log.IsDebugEnabled)
{
log.Debug(String.Format("Captured mouse button. code {0}, wparam {1}, lparam {2}.", nCode, wParam, lParam));
}
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, hookStruct.Point.X, hookStruct.Point.Y, mouseDelta);
//raise it
OnMouseActivity(this, e);
}
return(Win32Helper.CallNextHookEx(this._hook, nCode, wParam, lParam));
}
/// <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>
protected override int HookProc(int nCode, Int32 wParam, IntPtr lParam)
{
if (log.IsDebugEnabled)
{
log.Debug(String.Format("Captured key press. code {0}, wparam {1}, lparam {2}.", nCode, wParam, lParam));
}
//Disable keyboard.
if (DisableDevice)
{
bool notExceptKey = true;
if (nCode >= 0)
{
KeyboardHookStruct keyStruct = (KeyboardHookStruct)Marshal.PtrToStructure(lParam, typeof(KeyboardHookStruct));
Keys keyData = (Keys)keyStruct.VKCode;
foreach (Keys key in ExceptKeys)
{
if (key.Equals(keyData))
{
if (log.IsDebugEnabled)
{
log.Debug(String.Format("Captured hot key '{0}' when disable keyboard press.", keyData));
}
notExceptKey = false;
break;
}
}
}
if (notExceptKey)
{
return(1);
}
}
bool handled = false;
//it was ok and someone listens to events
if (nCode >= 0)
{
KeyboardHookStruct keyStruct = (KeyboardHookStruct)Marshal.PtrToStructure(lParam, typeof(KeyboardHookStruct));
//raise KeyDown
if (OnKeyDown != null && (wParam == (int)WM_KEYBOARD.WM_KEYDOWN || wParam == (int)WM_KEYBOARD.WM_SYSKEYDOWN))
{
Keys keyData = (Keys)keyStruct.VKCode;
KeyEventArgs e = new KeyEventArgs(keyData);
this.OnKeyDown(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)keyStruct.VKCode;
KeyEventArgs e = new KeyEventArgs(keyData);
this.OnKeyUp(this, e);
handled = handled || e.Handled;
}
// raise KeyPress
if (this.OnKeyPress != null && wParam == (int)WM_KEYBOARD.WM_KEYUP)
{
bool isDownShift = false, isDownCapslock = false;
try {
isDownShift = ((Win32Helper.GetKeyStates(VK_SHIFT) & 0x80) == 0x80 ? true : false);
isDownCapslock = (Win32Helper.GetKeyStates(VK_CAPITAL) != 0 ? true : false);
} catch {
//
}
byte[] keyState = new byte[256];
Win32Helper.GetKeyboardState(keyState);
byte[] inBuffer = new byte[2];
int result = Win32Helper.ToAscii(keyStruct.VKCode, keyStruct.ScanCode, keyState, inBuffer, keyStruct.Flags);
if (log.IsDebugEnabled)
{
log.Debug(String.Format("Key converting result is '{0}'", result));
}
if (result == 1)
{
char key = (char)inBuffer[0];
if ((isDownCapslock ^ isDownShift) && Char.IsLetter(key))
{
key = Char.ToUpper(key);
}
if (log.IsDebugEnabled)
{
log.Debug(String.Format("Captured key press '{0}'", key));
}
KeyPressEventArgs e = new KeyPressEventArgs(key);
this.OnKeyPress(this, e);
handled = handled || e.Handled;
}
}
}
//if event handled in application do not handoff to other listeners
if (handled)
{
return(1);
}
else
{
return(Win32Helper.CallNextHookEx(this._hook, nCode, wParam, lParam));
}
}