private void OnTouchUpHandler(object sender, WMTouchEventArgs e)
{
lock (m_touchlock)
{
this.touches.Remove(e.Id);
}
}
private void OnTouchDownHandler(object sender, WMTouchEventArgs e)
{
lock (m_touchlock)
{
TouchData t = new TouchData();
t.Id = e.Id;
t.IsNew = true;
t.Pos = new Vector2(e.LocationX, e.LocationY);
this.touches.Add(e.Id, t);
}
}
private void OnTouchMoveHandler(object sender, WMTouchEventArgs e)
{
lock (m_touchlock)
{
TouchData t = this.touches[e.Id];
t.Pos = new Vector2(e.LocationX, e.LocationY);
}
}
private bool DecodeTouch(ref Message m)
{
// More than one touchinput may be associated with a touch message,
int inputCount = (m.WParam.ToInt32() & 0xffff); // Number of touch inputs, actual per-contact messages
TOUCHINPUT[] inputs = new TOUCHINPUT[inputCount];
if (!TouchConstants.GetTouchInputInfo(m.LParam, inputCount, inputs, Marshal.SizeOf(new TOUCHINPUT())))
{
return false;
}
bool handled = false;
for (int i = 0; i < inputCount; i++)
{
TOUCHINPUT ti = inputs[i];
EventHandler<WMTouchEventArgs> handler = null;
if ((ti.dwFlags & TouchConstants.TOUCHEVENTF_DOWN) != 0)
{
handler = Touchdown;
}
else if ((ti.dwFlags & TouchConstants.TOUCHEVENTF_UP) != 0)
{
handler = Touchup;
}
else if ((ti.dwFlags & TouchConstants.TOUCHEVENTF_MOVE) != 0)
{
handler = TouchMove;
}
// Convert message parameters into touch event arguments and handle the event.
if (handler != null)
{
WMTouchEventArgs te = new WMTouchEventArgs();
// TOUCHINFO point coordinates and contact size is in 1/100 of a pixel; convert it to pixels.
// Also convert screen to client coordinates.
te.ContactY = ti.cyContact / 100;
te.ContactX = ti.cxContact / 100;
te.Id = ti.dwID;
{
Point pt = PointToClient(new Point(ti.x / 100, ti.y / 100));
te.LocationX = pt.X;
te.LocationY = pt.Y;
}
te.Time = ti.dwTime;
te.Mask = ti.dwMask;
te.Flags = ti.dwFlags;
handler(this, te);
// Mark this event as handled.
handled = true;
}
}
TouchConstants.CloseTouchInputHandle(m.LParam);
return handled;
}
