private WinAPI.INPUT[] InputWheel(WinAPI.POINT pt, uint mouseData, WinAPI.MouseEvent wheel_type)
{
var input = new WinAPI.INPUT[WHEEL_FACTOR];
for (uint i = 0; i < WHEEL_FACTOR; ++i)
{
input[i].type = WinAPI.INPUT_MOUSE;
input[i].mi.dx = pt.x;
input[i].mi.dy = pt.y;
input[i].mi.mouseData = mouseData;
input[i].mi.dwFlags = (uint)wheel_type;
input[i].mi.time = 0x0;
input[i].mi.dwExtraInfo = IntPtr.Zero;
}
return(input);
}
public WinAPI.INPUT[] InputMiddleClick(WinAPI.POINT pt)
{
WinAPI.INPUT[] input = new WinAPI.INPUT[2];
input[0].type = WinAPI.INPUT_MOUSE;
input[0].mi.dx = pt.x;
input[0].mi.dy = pt.y;
input[0].mi.mouseData = 0x0;
input[0].mi.dwFlags = (uint)WinAPI.MouseEvent.MOUSEEVENTF_MIDDLEDOWN; // middle button down
input[0].mi.time = 0x0;
input[0].mi.dwExtraInfo = IntPtr.Zero;
input[1].type = WinAPI.INPUT_MOUSE;
input[1].mi.dx = pt.x;
input[1].mi.dy = pt.y;
input[1].mi.mouseData = 0x0;
input[1].mi.dwFlags = (uint)WinAPI.MouseEvent.MOUSEEVENTF_MIDDLEUP; // middle button up
input[1].mi.time = 0x0;
input[1].mi.dwExtraInfo = IntPtr.Zero;
return(input);
}
public override IntPtr HookCallback(int nCode, IntPtr wParam, IntPtr lParam)
{
if (nCode != WinAPI.HC_ACTION)
{
return(NativeMethods.CallNextHookEx(_hookID, nCode, wParam, lParam));
}
bool preventCallNextHookEx = false;
WinAPI.MSLLHOOKSTRUCT p = (WinAPI.MSLLHOOKSTRUCT)Marshal.PtrToStructure(lParam, typeof(WinAPI.MSLLHOOKSTRUCT));
uint xbutton = (p.mouseData & 0xFFFF0000) >> 16; // see https://msdn.microsoft.com/de-de/library/windows/desktop/ms644970(v=vs.85).aspx
#if DEBUG
var oldState = _state;
log.Trace(String.Format("useX1 {0}, useX2 {1}, xbutton {2}", useX1, useX2, xbutton));
#endif
switch (_state)
{
case State.NORMAL:
if (WinAPI.MouseMessages.WM_XBUTTONDOWN == (WinAPI.MouseMessages)wParam)
{ // NORMAL->DOWN: remember position
if (!(useX1 && xbutton == 1) && !(useX2 && xbutton == 2))
{
break;
}
preventCallNextHookEx = true;
_state = State.DOWN;
_origin = p.pt;
_originScaled = System.Windows.Forms.Cursor.Position;
#if DEBUG
log.Trace(String.Format("{0}->{1} set origin {2},{3} scaled {4},{5}", oldState, _state, _origin.x, _origin.y, _originScaled.X, _originScaled.Y));
#endif
}
break;
case State.DOWN:
if (WinAPI.MouseMessages.WM_XBUTTONUP == (WinAPI.MouseMessages)wParam)
{ // DOWN->NORMAL: middle button click
if (!(useX1 && xbutton == 1) && !(useX2 && xbutton == 2))
{
break;
}
_state = State.NORMAL;
if (!emulateMiddleButton)
{
break;
}
preventCallNextHookEx = true;
WinAPI.INPUT[] input = new WinAPI.INPUT[2];
input[0].type = WinAPI.INPUT_MOUSE;
input[0].mi.dx = p.pt.x;
input[0].mi.dy = p.pt.y;
input[0].mi.mouseData = 0x0;
input[0].mi.dwFlags = (uint)WinAPI.MouseEvent.MOUSEEVENTF_MIDDLEDOWN; // middle button down
input[0].mi.time = 0x0;
input[0].mi.dwExtraInfo = IntPtr.Zero;
input[1].type = WinAPI.INPUT_MOUSE;
input[1].mi.dx = p.pt.x;
input[1].mi.dy = p.pt.y;
input[1].mi.mouseData = 0x0;
input[1].mi.dwFlags = (uint)WinAPI.MouseEvent.MOUSEEVENTF_MIDDLEUP; // middle button up
input[1].mi.time = 0x0;
input[1].mi.dwExtraInfo = IntPtr.Zero;
NativeMethods.SendInput((uint)input.Length, input, Marshal.SizeOf(typeof(WinAPI.INPUT)));
}
else if (WinAPI.MouseMessages.WM_MOUSEMOVE == (WinAPI.MouseMessages)wParam)
{ // DOWN->SCROLL
preventCallNextHookEx = true;
_state = State.SCROLL;
_xcount = 0;
_ycount = 0;
System.Windows.Forms.Cursor.Position = _originScaled;
}
break;
case State.SCROLL:
if (WinAPI.MouseMessages.WM_XBUTTONUP == (WinAPI.MouseMessages)wParam)
{ // SCROLL->NORMAL
if (!(useX1 && xbutton == 1) && !(useX2 && xbutton == 2))
{
break;
}
preventCallNextHookEx = true;
_state = State.NORMAL;
}
if (WinAPI.MouseMessages.WM_MOUSEMOVE == (WinAPI.MouseMessages)wParam)
{ // SCROLL->SCROLL: wheel event
preventCallNextHookEx = true;
_xcount += p.pt.x - _origin.x;
_ycount += p.pt.y - _origin.y;
System.Windows.Forms.Cursor.Position = _originScaled;
if (_xcount < -X_THRESHOLD || _xcount > X_THRESHOLD)
{
uint mouseData = (uint)(_xcount > 0 ? +WinAPI.WHEEL_DELTA : -WinAPI.WHEEL_DELTA); // scroll direction
_xcount = 0;
if (preferAxisMovement)
{
_ycount = 0;
}
WinAPI.INPUT[] input = new WinAPI.INPUT[WHEEL_FACTOR];
for (uint i = 0; i < WHEEL_FACTOR; ++i)
{
input[i].type = WinAPI.INPUT_MOUSE;
input[i].mi.dx = p.pt.x;
input[i].mi.dy = p.pt.y;
input[i].mi.mouseData = mouseData;
input[i].mi.dwFlags = (uint)WinAPI.MouseEvent.MOUSEEVENTF_HWHEEL; // horizontal wheel
input[i].mi.time = 0x0;
input[i].mi.dwExtraInfo = IntPtr.Zero;
}
if (!timer.Enabled)
{
timer.Start();
NativeMethods.SendInput((uint)input.Length, input, Marshal.SizeOf(typeof(WinAPI.INPUT)));
}
}
if (_ycount < -Y_THRESHOLD || _ycount > Y_THRESHOLD)
{
uint mouseData = (uint)(_ycount > 0 ? -WinAPI.WHEEL_DELTA : +WinAPI.WHEEL_DELTA); // scroll direction
if (preferAxisMovement)
{
_xcount = 0;
}
_ycount = 0;
WinAPI.INPUT[] input = new WinAPI.INPUT[WHEEL_FACTOR];
for (uint i = 0; i < WHEEL_FACTOR; ++i)
{
input[i].type = WinAPI.INPUT_MOUSE;
input[i].mi.dx = p.pt.x;
input[i].mi.dy = p.pt.y;
input[i].mi.mouseData = mouseData;
input[i].mi.dwFlags = (uint)WinAPI.MouseEvent.MOUSEEVENTF_WHEEL; // vertical wheel
input[i].mi.time = 0x0;
input[i].mi.dwExtraInfo = IntPtr.Zero;
}
if (!timer.Enabled)
{
timer.Start();
NativeMethods.SendInput((uint)input.Length, input, Marshal.SizeOf(typeof(WinAPI.INPUT)));
}
}
}
break;
}
// Return TRUE if handled
return(preventCallNextHookEx ? (IntPtr)1 : NativeMethods.CallNextHookEx(_hookID, nCode, wParam, lParam));
}
int _ycount = 0; // accumulated vertical movement while in state SCROLL
public override IntPtr HookCallback(int nCode, IntPtr wParam, IntPtr lParam)
{
if (nCode != WinAPI.HC_ACTION)
{
return(NativeMethods.CallNextHookEx(_hookID, nCode, wParam, lParam));
}
bool preventCallNextHookEx = false;
WinAPI.MSLLHOOKSTRUCT p = (WinAPI.MSLLHOOKSTRUCT)Marshal.PtrToStructure(lParam, typeof(WinAPI.MSLLHOOKSTRUCT));
switch (_state)
{
case State.NORMAL:
if (WinAPI.MouseMessages.WM_XBUTTONDOWN == (WinAPI.MouseMessages)wParam)
{ // NORMAL->DOWN: remember position
preventCallNextHookEx = true;
_state = State.DOWN;
_origin = p.pt;
}
break;
case State.DOWN:
if (WinAPI.MouseMessages.WM_XBUTTONUP == (WinAPI.MouseMessages)wParam)
{ // DOWN->NORMAL: middle button click
preventCallNextHookEx = true;
_state = State.NORMAL;
WinAPI.INPUT[] input = new WinAPI.INPUT[2];
input[0].type = WinAPI.INPUT_MOUSE;
input[0].mi.dx = p.pt.x;
input[0].mi.dy = p.pt.y;
input[0].mi.mouseData = 0x0;
input[0].mi.dwFlags = (uint)WinAPI.MouseEvent.MOUSEEVENTF_MIDDLEDOWN; // middle button down
input[0].mi.time = 0x0;
input[0].mi.dwExtraInfo = IntPtr.Zero;
input[1].type = WinAPI.INPUT_MOUSE;
input[1].mi.dx = p.pt.x;
input[1].mi.dy = p.pt.y;
input[1].mi.mouseData = 0x0;
input[1].mi.dwFlags = (uint)WinAPI.MouseEvent.MOUSEEVENTF_MIDDLEUP; // middle button up
input[1].mi.time = 0x0;
input[1].mi.dwExtraInfo = IntPtr.Zero;
NativeMethods.SendInput((uint)input.Length, input, Marshal.SizeOf(typeof(WinAPI.INPUT)));
}
else if (WinAPI.MouseMessages.WM_MOUSEMOVE == (WinAPI.MouseMessages)wParam)
{ // DOWN->SCROLL
preventCallNextHookEx = true;
_state = State.SCROLL;
_xcount = 0;
_ycount = 0;
NativeMethods.SetCursorPos(_origin.x, _origin.y);
}
break;
case State.SCROLL:
if (WinAPI.MouseMessages.WM_XBUTTONUP == (WinAPI.MouseMessages)wParam)
{ // SCROLL->NORMAL
preventCallNextHookEx = true;
_state = State.NORMAL;
}
if (WinAPI.MouseMessages.WM_MOUSEMOVE == (WinAPI.MouseMessages)wParam)
{ // SCROLL->SCROLL: wheel event
preventCallNextHookEx = true;
_xcount += p.pt.x - _origin.x;
_ycount += p.pt.y - _origin.y;
NativeMethods.SetCursorPos(_origin.x, _origin.y);
if (_xcount < -X_THRESHOLD || _xcount > X_THRESHOLD)
{
uint mouseData = (uint)(_xcount > 0 ? +WinAPI.WHEEL_DELTA : -WinAPI.WHEEL_DELTA); // scroll direction
_xcount = 0;
if (preferAxisMovement)
{
_ycount = 0;
}
WinAPI.INPUT[] input = new WinAPI.INPUT[WHEEL_FACTOR];
for (uint i = 0; i < WHEEL_FACTOR; ++i)
{
input[i].type = WinAPI.INPUT_MOUSE;
input[i].mi.dx = p.pt.x;
input[i].mi.dy = p.pt.y;
input[i].mi.mouseData = mouseData;
input[i].mi.dwFlags = (uint)WinAPI.MouseEvent.MOUSEEVENTF_HWHEEL; // horizontal wheel
input[i].mi.time = 0x0;
input[i].mi.dwExtraInfo = IntPtr.Zero;
}
NativeMethods.SendInput((uint)input.Length, input, Marshal.SizeOf(typeof(WinAPI.INPUT)));
}
if (_ycount < -Y_THRESHOLD || _ycount > Y_THRESHOLD)
{
uint mouseData = (uint)(_ycount > 0 ? -WinAPI.WHEEL_DELTA : +WinAPI.WHEEL_DELTA); // scroll direction
if (preferAxisMovement)
{
_xcount = 0;
}
_ycount = 0;
WinAPI.INPUT[] input = new WinAPI.INPUT[WHEEL_FACTOR];
for (uint i = 0; i < WHEEL_FACTOR; ++i)
{
input[i].type = WinAPI.INPUT_MOUSE;
input[i].mi.dx = p.pt.x;
input[i].mi.dy = p.pt.y;
input[i].mi.mouseData = mouseData;
input[i].mi.dwFlags = (uint)WinAPI.MouseEvent.MOUSEEVENTF_WHEEL; // vertical wheel
input[i].mi.time = 0x0;
input[i].mi.dwExtraInfo = IntPtr.Zero;
}
NativeMethods.SendInput((uint)input.Length, input, Marshal.SizeOf(typeof(WinAPI.INPUT)));
}
}
break;
}
// Return TRUE if handled
return(preventCallNextHookEx ? (IntPtr)1 : NativeMethods.CallNextHookEx(_hookID, nCode, wParam, lParam));
}
public StateDown(WinAPI.POINT origin)
: base(origin)
{
}
} // Origin contains original screen resolution values as reported by the event message.
protected State(WinAPI.POINT origin)
{
Origin = origin;
}
} // accumulated vertical movement while in state SCROLL
public StateScroll(WinAPI.POINT origin, int xcount, int ycount)
: base(origin)
{
Xcount = xcount;
Ycount = ycount;
}
