/// <summary>
/// Create new touch event argument instance
/// </summary>
/// <param name="hWndWrapper">The target control</param>
/// <param name="touchInput">one of the inner touch input in the message</param>
internal TouchEventArgs(IHwndWrapper hWndWrapper, float dpiX, float dpiY, ref TOUCHINPUT touchInput)
{
_hWndWrapper = hWndWrapper;
_dpiXFactor = 96F / dpiX;
_dpiYFactor = 96F / dpiY;
DecodeTouch(ref touchInput);
}
/// <summary>
/// Decode the message and create a collection of event arguments
/// </summary>
/// <remarks>
/// One Windows message can result a group of events
/// </remarks>
/// <returns>An enumerator of thr resuting events</returns>
/// <param name="hWnd">the WndProc hWnd</param>
/// <param name="msg">the WndProc msg</param>
/// <param name="wParam">the WndProc wParam</param>
/// <param name="lParam">the WndProc lParam</param>
private IEnumerable <TouchEventArgs> DecodeMessage(IntPtr hWnd, int msg, IntPtr wParam, IntPtr lParam, float dpiX, float dpiY)
{
// More than one touchinput may be associated with a touch message,
// so an array is needed to get all event information.
int inputCount = User32.LoWord(wParam.ToInt32()); // Number of touch inputs, actual per-contact messages
TOUCHINPUT[] inputs; // Array of TOUCHINPUT structures
inputs = new TOUCHINPUT[inputCount]; // Allocate the storage for the parameters of the per-contact messages
try
{
// Unpack message parameters into the array of TOUCHINPUT structures, each
// representing a message for one single contact.
if (!User32.GetTouchInputInfo(lParam, inputCount, inputs, Marshal.SizeOf(inputs[0])))
{
// Get touch info failed.
throw new Exception("Error calling GetTouchInputInfo API");
}
// For each contact, dispatch the message to the appropriate message
// handler.
// Note that for WM_TOUCHDOWN you can get down & move notifications
// and for WM_TOUCHUP you can get up & move notifications
// WM_TOUCHMOVE will only contain move notifications
// and up & down notifications will never come in the same message
for (int i = 0; i < inputCount; i++)
{
TouchEventArgs touchEventArgs = new TouchEventArgs(HWndWrapper, dpiX, dpiY, ref inputs[i]);
yield return(touchEventArgs);
}
}
finally
{
User32.CloseTouchInputHandle(lParam);
}
}
public POINT getClientPoint(TOUCHINPUT WM_T)
{
POINT p = new POINT();
p.X = WM_T.x / 100;
p.Y = WM_T.y / 100;
ScreenToClient(hMainWindow, ref p);
return(p);
}
public static TOUCHINPUT[] GetTouchInputFromParam(IntPtr wParam, IntPtr lParam)
{
int inputCount = (int)(wParam.ToInt32() & 0xFFFF);
TOUCHINPUT[] inputs = new TOUCHINPUT[inputCount];
bool result = NativeMethod.GetTouchInputInfo(lParam, inputCount, inputs, Marshal.SizeOf(inputs[0]));
return(inputs);
}
private bool DecodeTouch(ref Message m)
{
int inputCount = LoWord(m.WParam.ToInt32());
TOUCHINPUT[] inputs;
inputs = new TOUCHINPUT[inputCount];
if (!GetTouchInputInfo(m.LParam, inputCount, inputs, touchInputSize))
{
return(false);
}
bool handled = false;
for (int i = 0; i < inputCount; i++)
{
TOUCHINPUT ti = inputs[i];
EventHandler <WMTouchEventArgs> handler = null;
if ((ti.dwFlags & TOUCHEVENTF_DOWN) != 0)
{
handler = Touchdown;
}
else if ((ti.dwFlags & TOUCHEVENTF_UP) != 0)
{
handler = Touchup;
}
else if ((ti.dwFlags & TOUCHEVENTF_MOVE) != 0)
{
handler = TouchMove;
}
if (handler != null)
{
WMTouchEventArgs te = new WMTouchEventArgs();
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);
handled = true;
}
}
CloseTouchInputHandle(m.LParam);
return(handled);
}
/// <summary>
/// Decodes a single touch point and creates from it the <see cref="PointerPoint"/> class.
/// </summary>
/// <param name="input">The touch point input structure.</param>
private void DecodeAndDispatchTouchPoint(TOUCHINPUT input)
{
var p = control.PointToClient(new System.Drawing.Point(AdjustX(input.x), AdjustY(input.y)));
var mask = input.dwMask;
var flags = input.dwFlags;
var isPrimary = (flags & User32.TOUCHEVENTF_PRIMARY) != 0;
PointerUpdateKind pointerUpdateKind;
PointerEventType eventType;
if ((flags & User32.TOUCHEVENTF_DOWN) != 0)
{
pointerUpdateKind = PointerUpdateKind.LeftButtonPressed;
eventType = PointerEventType.Pressed;
}
else if ((flags & User32.TOUCHEVENTF_DOWN) != 0)
{
pointerUpdateKind = PointerUpdateKind.LeftButtonReleased;
eventType = PointerEventType.Released;
}
else
{
pointerUpdateKind = PointerUpdateKind.Other;
eventType = PointerEventType.Moved;
}
var clientSize = control.ClientSize;
var position = new Vector2((float)p.X / clientSize.Width, (float)p.Y / clientSize.Height);
position.Saturate();
var point = new PointerPoint
{
EventType = eventType,
DeviceType = ((flags & User32.TOUCHEVENTF_PEN) != 0) ? PointerDeviceType.Pen : PointerDeviceType.Touch,
PointerId = (uint)input.dwID,
Timestamp = (ulong)input.dwTime,
Position = position,
KeyModifiers = GetCurrentKeyModifiers(),
IsPrimary = isPrimary,
IsInRange = (flags & User32.TOUCHEVENTF_INRANGE) != 0,
TouchConfidence = (flags & User32.TOUCHEVENTF_PALM) != 0,
PointerUpdateKind = pointerUpdateKind,
};
if ((mask & User32.TOUCHINPUTMASKF_CONTACTAREA) != 0)
{
point.ContactRect = new RectangleF(position.X, position.Y, (float)AdjustX(input.cxContact) / clientSize.Width, (float)AdjustY(input.cyContact) / clientSize.Height);
}
manager.AddPointerEvent(ref point);
}
private void decodeTouches(IntPtr wParam, IntPtr lParam)
{
lock ( tracking )
{
int inputCount = LOWORD(wParam.ToInt32());
TOUCHINPUT[] inputs = new TOUCHINPUT[inputCount];
if (!GetTouchInputInfo(lParam, inputCount, inputs, touchInputSize))
{
return;
}
for (int i = 0; i < inputCount; i++)
{
TOUCHINPUT touch = inputs[i];
if ((touch.dwFlags & (int)TouchEvent.TOUCHEVENTF_DOWN) != 0)
{
POINT p = new POINT();
p.X = touch.x / 100;
p.Y = touch.y / 100;
ScreenToClient(hMainWindow, ref p);
winToInternalId.Add(touch.dwID, beginTouch(new Vector2(p.X, Screen.height - p.Y)));
}
else if ((touch.dwFlags & (int)TouchEvent.TOUCHEVENTF_UP) != 0)
{
int existingId;
if (winToInternalId.TryGetValue(touch.dwID, out existingId))
{
winToInternalId.Remove(touch.dwID);
endTouch(existingId);
}
}
else if ((touch.dwFlags & (int)TouchEvent.TOUCHEVENTF_MOVE) != 0)
{
int existingId;
if (winToInternalId.TryGetValue(touch.dwID, out existingId))
{
POINT p = new POINT();
p.X = touch.x / 100;
p.Y = touch.y / 100;
ScreenToClient(hMainWindow, ref p);
moveTouch(existingId, new Vector2(p.X, Screen.height - p.Y));
}
}
}
CloseTouchInputHandle(lParam);
}
}
private IEnumerable <TouchNotification> GenerateTouchNotifications(EventPattern <WMEventArgs> e)
{
var a = e.EventArgs;
var touchPointCount = a.WParam.LoWord();
if (touchPointCount > 0)
{
var touchPoints = new TOUCHINPUT[touchPointCount];
if (User32.GetTouchInputInfo(a.LParam, touchPointCount, touchPoints, Marshal.SizeOf(typeof(TOUCHINPUT))))
{
a.Handled = true;
try
{
RECT cr;
if (User32.GetClientRect(a.HWnd, out cr))
{
foreach (var touchPoint in touchPoints)
{
var position = new Point(touchPoint.x / 100, touchPoint.y / 100);
User32.ScreenToClient(a.HWnd, ref position);
var clientArea = new Size(cr.Width, cr.Height);
var id = touchPoint.dwID;
var primary = (touchPoint.dwFlags & Const.TOUCHEVENTF_PRIMARY) > 0;
var contactArea = (touchPoint.dwMask & Const.TOUCHINPUTMASKF_CONTACTAREA) > 0
? new Size(touchPoint.cxContact / 100, touchPoint.cyContact / 100)
: Size.Empty;
if ((touchPoint.dwFlags & Const.TOUCHEVENTF_DOWN) > 0)
{
yield return(new TouchDownNotification(position, clientArea, id, primary, contactArea, touchPoint.hSource.ToInt64(), e.Sender));
}
if ((touchPoint.dwFlags & Const.TOUCHEVENTF_MOVE) > 0)
{
yield return(new TouchMoveNotification(position, clientArea, id, primary, contactArea, touchPoint.hSource.ToInt64(), e.Sender));
}
if ((touchPoint.dwFlags & Const.TOUCHEVENTF_UP) > 0)
{
yield return(new TouchUpNotification(position, clientArea, id, primary, contactArea, touchPoint.hSource.ToInt64(), e.Sender));
}
}
}
}
finally
{
User32.CloseTouchInputHandle(a.LParam);
}
}
}
yield break;
}
public static void WndProc(Window window, int msg, IntPtr wParam, IntPtr lParam, ref bool handled)
{
if (msg == NativeMethods.WM_TOUCH)
{
var inputCount = wParam.ToInt32() & 0xffff;
var inputs = new TOUCHINPUT[inputCount];
if (NativeMethods.GetTouchInputInfo(lParam, inputCount, inputs, NativeMethods.TouchInputSize))
{
for (int i = 0; i < inputCount; i++)
{
var input = inputs[i];
var position = GraphicsHelper.DivideByDpi(new Point(input.x * 0.01, input.y * 0.01));
position.Offset(-(double)_actualLeft.GetValue(window), -(double)_actualTop.GetValue(window));
MessageTouchDevice device;
if (!_devices.TryGetValue(input.dwID, out device))
{
device = new MessageTouchDevice(input.dwID);
_devices.Add(input.dwID, device);
}
if (!device.IsActive && input.dwFlags.HasFlag(TOUCHEVENTF.TOUCHEVENTF_DOWN))
{
device.SetActiveSource(PresentationSource.FromVisual(window));
device.Position = position;
device.Activate();
device.ReportDown();
}
else if (device.IsActive && input.dwFlags.HasFlag(TOUCHEVENTF.TOUCHEVENTF_UP))
{
device.Position = position;
device.ReportUp();
device.Deactivate();
_devices.Remove(input.dwID);
}
else if (device.IsActive && input.dwFlags.HasFlag(TOUCHEVENTF.TOUCHEVENTF_MOVE) && device.Position != position)
{
device.Position = position;
device.ReportMove();
}
_lastTouch = DateTime.Now;
}
}
NativeMethods.CloseTouchInputHandle(lParam);
handled = true;
}
}
protected override void WndProc(ref Message m)
{
switch (m.Msg)
{
case (int)WM.WM_TOUCH: {
int inputCount = (int)(m.WParam.ToInt32() & 0xFFFF);
TOUCHINPUT[] inputs = new TOUCHINPUT[inputCount];
bool result = NativeMethod.GetTouchInputInfo(m.LParam, inputCount, inputs, Marshal.SizeOf(inputs[0]));
this.TouchChanged?.Invoke(this.Handle, inputCount, inputs);
}
break;
}
base.WndProc(ref m);
}
private bool HandleTouch(IntPtr wParam, IntPtr lParam)
{
bool handled = false;
var inputCount = wParam.ToInt32() & 0xffff;
var inputs = new TOUCHINPUT[inputCount];
if (GetTouchInputInfo(lParam, inputCount, inputs, Marshal.SizeOf(inputs[0])))
{
for (int i = 0; i < inputCount; i++)
{
var input = inputs[i];
var position = PointFromScreen(new System.Windows.Point((input.x * 0.01), (input.y * 0.01)));
TouchDeviceEmulator device;
if (!_devices.TryGetValue(input.dwID, out device))
{
device = new TouchDeviceEmulator(input.dwID);
_devices.Add(input.dwID, device);
}
device.Position = position;
if ((input.dwFlags & TOUCHEVENTF_DOWN) > 0)
{
device.SetActiveSource(PresentationSource.FromVisual(this));
device.Activate();
device.ReportDown();
}
else if (device.IsActive && (input.dwFlags & TOUCHEVENTF_UP) > 0)
{
device.ReportUp();
device.Deactivate();
_devices.Remove(input.dwID);
}
else if (device.IsActive && (input.dwFlags & TOUCHEVENTF_MOVE) > 0)
{
device.ReportMove();
}
}
CloseTouchInputHandle(lParam);
handled = true;
}
return(handled);
}
private bool DecodeTouch(ref Message m)
{
int touchInputCount = m.WParam.ToInt32() & 0xffff;
TOUCHINPUT[] inputs = new TOUCHINPUT[touchInputCount];
if (!GetTouchInputInfo(m.LParam, touchInputCount, inputs, touchInputSize))
{
return(false);
}
bool handled = false;
for (int i = 0; i < touchInputCount; i++)
{
var tochInput = inputs[i];
EventHandler <TouchEventArgs> handler = null;
if ((tochInput.dwFlags & TOUCHEVENTF_DOWN) != 0)
{
handler = Touchdown;
}
else if ((tochInput.dwFlags & TOUCHEVENTF_UP) != 0)
{
handler = Touchup;
}
else if ((tochInput.dwFlags & TOUCHEVENTF_MOVE) != 0)
{
handler = TouchMove;
}
if (handler != null)
{
// TOUCHINFO point coordinates size is in 1/100 of a pixel
// convert screen to client coordinates.
var te = new TouchEventArgs
{
Location = PointToClient(new Point(tochInput.x / 100, tochInput.y / 100)),
ID = tochInput.dwID,
Flags = tochInput.dwFlags
};
handler(this, te);
handled = true;
}
}
CloseTouchInputHandle(m.LParam);
return(handled);
}
void updateTouchFromWM(TOUCHINPUT WM_T)
{
lock (m_lock)
{
if ((WM_T.dwFlags & (int)TouchEvent.TOUCHEVENTF_MOVE) != 0)
{
current[WM_T.dwID] = WM_T;
}
if ((WM_T.dwFlags & (int)TouchEvent.TOUCHEVENTF_DOWN) != 0)
{
current.Add(WM_T.dwID, WM_T);
}
if ((WM_T.dwFlags & (int)TouchEvent.TOUCHEVENTF_UP) != 0)
{
current.Remove(WM_T.dwID);
}
}
}
void processTouches(IntPtr wParam, IntPtr lParam)
{
int inputCount = LOWORD(wParam.ToInt32());
TOUCHINPUT[] inputs = new TOUCHINPUT[inputCount];
if (!GetTouchInputInfo(lParam, inputCount, inputs, touchInputSize))
{
return;
}
for (int i = 0; i < inputCount; i++)
{
TOUCHINPUT touch = inputs[i];
updateTouchFromWM(touch);
}
CloseTouchInputHandle(lParam);
}
/// <summary>
/// Decodes touch messages and calls corresponding methods on <see cref="PointerManager"/> class
/// </summary>
/// <param name="wParam">wParam</param>
/// <param name="lParam">lParam</param>
private void DecodeAndDispatchTouchMessages(IntPtr wParam, IntPtr lParam)
{
var inputsCount = User32.LoWord(wParam.ToInt32());
var inputs = new TOUCHINPUT[inputsCount];
try
{
if (!User32.GetTouchInputInfo(lParam, inputsCount, inputs, Marshal.SizeOf(typeof(TOUCHINPUT))))
{
throw new InvalidOperationException("Error calling GetTouchInfo API");
}
for (var i = 0; i < inputsCount; i++)
{
DecodeAndDispatchTouchPoint(inputs[i]);
}
}
finally
{
User32.CloseTouchInputHandle(lParam);
}
}
// Decodes and handles WM_TOUCH* messages.
private void DecodeTouch(ref TOUCHINPUT touchInput)
{
// TOUCHINFO point coordinates and contact size is in 1/100 of a pixel; convert it to pixels.
// Also convert screen to client coordinates.
if ((touchInput.dwMask & User32.TOUCHINPUTMASKF_CONTACTAREA) != 0)
{
ContactSize = new Size(AdjustDpiX(touchInput.cyContact / 100), AdjustDpiY(touchInput.cyContact / 100));
}
Id = touchInput.dwID;
Point p = _hWndWrapper.PointToClient(new Point(touchInput.x / 100, touchInput.y / 100));
Location = new Point(AdjustDpiX(p.X), AdjustDpiY(p.Y));
Time = touchInput.dwTime;
TimeSpan ellapse = TimeSpan.FromMilliseconds(Environment.TickCount - touchInput.dwTime);
AbsoluteTime = DateTime.Now - ellapse;
Mask = touchInput.dwMask;
Flags = touchInput.dwFlags;
}
protected virtual IntPtr WndProc(IntPtr hWnd, uint msg, IntPtr wParam, IntPtr lParam)
{
bool unicode = UnmanagedMethods.IsWindowUnicode(hWnd);
const double wheelDelta = 120.0;
uint timestamp = unchecked ((uint)UnmanagedMethods.GetMessageTime());
RawInputEventArgs e = null;
WindowsMouseDevice.Instance.CurrentWindow = this;
switch ((UnmanagedMethods.WindowsMessage)msg)
{
case UnmanagedMethods.WindowsMessage.WM_ACTIVATE:
var wa = (UnmanagedMethods.WindowActivate)(ToInt32(wParam) & 0xffff);
switch (wa)
{
case UnmanagedMethods.WindowActivate.WA_ACTIVE:
case UnmanagedMethods.WindowActivate.WA_CLICKACTIVE:
Activated?.Invoke();
break;
case UnmanagedMethods.WindowActivate.WA_INACTIVE:
Deactivated?.Invoke();
break;
}
return(IntPtr.Zero);
case WindowsMessage.WM_NCCALCSIZE:
if (ToInt32(wParam) == 1 && !_decorated)
{
return(IntPtr.Zero);
}
break;
case UnmanagedMethods.WindowsMessage.WM_CLOSE:
bool?preventClosing = Closing?.Invoke();
if (preventClosing == true)
{
return(IntPtr.Zero);
}
break;
case UnmanagedMethods.WindowsMessage.WM_DESTROY:
//Window doesn't exist anymore
_hwnd = IntPtr.Zero;
//Remove root reference to this class, so unmanaged delegate can be collected
s_instances.Remove(this);
Closed?.Invoke();
if (_parent != null)
{
_parent._disabledBy.Remove(this);
_parent.UpdateEnabled();
}
//Free other resources
Dispose();
return(IntPtr.Zero);
case UnmanagedMethods.WindowsMessage.WM_DPICHANGED:
var dpi = ToInt32(wParam) & 0xffff;
var newDisplayRect = Marshal.PtrToStructure <UnmanagedMethods.RECT>(lParam);
_scaling = dpi / 96.0;
ScalingChanged?.Invoke(_scaling);
SetWindowPos(hWnd,
IntPtr.Zero,
newDisplayRect.left,
newDisplayRect.top,
newDisplayRect.right - newDisplayRect.left,
newDisplayRect.bottom - newDisplayRect.top,
SetWindowPosFlags.SWP_NOZORDER | SetWindowPosFlags.SWP_NOACTIVATE);
return(IntPtr.Zero);
case UnmanagedMethods.WindowsMessage.WM_KEYDOWN:
case UnmanagedMethods.WindowsMessage.WM_SYSKEYDOWN:
e = new RawKeyEventArgs(
WindowsKeyboardDevice.Instance,
timestamp,
RawKeyEventType.KeyDown,
KeyInterop.KeyFromVirtualKey(ToInt32(wParam)), WindowsKeyboardDevice.Instance.Modifiers);
break;
case UnmanagedMethods.WindowsMessage.WM_KEYUP:
case UnmanagedMethods.WindowsMessage.WM_SYSKEYUP:
e = new RawKeyEventArgs(
WindowsKeyboardDevice.Instance,
timestamp,
RawKeyEventType.KeyUp,
KeyInterop.KeyFromVirtualKey(ToInt32(wParam)), WindowsKeyboardDevice.Instance.Modifiers);
break;
case UnmanagedMethods.WindowsMessage.WM_CHAR:
// Ignore control chars
if (ToInt32(wParam) >= 32)
{
e = new RawTextInputEventArgs(WindowsKeyboardDevice.Instance, timestamp,
new string((char)ToInt32(wParam), 1));
}
break;
case UnmanagedMethods.WindowsMessage.WM_LBUTTONDOWN:
case UnmanagedMethods.WindowsMessage.WM_RBUTTONDOWN:
case UnmanagedMethods.WindowsMessage.WM_MBUTTONDOWN:
if (ShouldIgnoreTouchEmulatedMessage())
{
break;
}
e = new RawPointerEventArgs(
WindowsMouseDevice.Instance,
timestamp,
_owner,
msg == (int)UnmanagedMethods.WindowsMessage.WM_LBUTTONDOWN
? RawPointerEventType.LeftButtonDown
: msg == (int)UnmanagedMethods.WindowsMessage.WM_RBUTTONDOWN
? RawPointerEventType.RightButtonDown
: RawPointerEventType.MiddleButtonDown,
DipFromLParam(lParam), GetMouseModifiers(wParam));
break;
case UnmanagedMethods.WindowsMessage.WM_LBUTTONUP:
case UnmanagedMethods.WindowsMessage.WM_RBUTTONUP:
case UnmanagedMethods.WindowsMessage.WM_MBUTTONUP:
if (ShouldIgnoreTouchEmulatedMessage())
{
break;
}
e = new RawPointerEventArgs(
WindowsMouseDevice.Instance,
timestamp,
_owner,
msg == (int)UnmanagedMethods.WindowsMessage.WM_LBUTTONUP
? RawPointerEventType.LeftButtonUp
: msg == (int)UnmanagedMethods.WindowsMessage.WM_RBUTTONUP
? RawPointerEventType.RightButtonUp
: RawPointerEventType.MiddleButtonUp,
DipFromLParam(lParam), GetMouseModifiers(wParam));
break;
case UnmanagedMethods.WindowsMessage.WM_MOUSEMOVE:
if (ShouldIgnoreTouchEmulatedMessage())
{
break;
}
if (!_trackingMouse)
{
var tm = new UnmanagedMethods.TRACKMOUSEEVENT
{
cbSize = Marshal.SizeOf <UnmanagedMethods.TRACKMOUSEEVENT>(),
dwFlags = 2,
hwndTrack = _hwnd,
dwHoverTime = 0,
};
UnmanagedMethods.TrackMouseEvent(ref tm);
}
e = new RawPointerEventArgs(
WindowsMouseDevice.Instance,
timestamp,
_owner,
RawPointerEventType.Move,
DipFromLParam(lParam), GetMouseModifiers(wParam));
break;
case UnmanagedMethods.WindowsMessage.WM_MOUSEWHEEL:
e = new RawMouseWheelEventArgs(
WindowsMouseDevice.Instance,
timestamp,
_owner,
PointToClient(PointFromLParam(lParam)),
new Vector(0, (ToInt32(wParam) >> 16) / wheelDelta), GetMouseModifiers(wParam));
break;
case UnmanagedMethods.WindowsMessage.WM_MOUSEHWHEEL:
e = new RawMouseWheelEventArgs(
WindowsMouseDevice.Instance,
timestamp,
_owner,
PointToClient(PointFromLParam(lParam)),
new Vector(-(ToInt32(wParam) >> 16) / wheelDelta, 0), GetMouseModifiers(wParam));
break;
case UnmanagedMethods.WindowsMessage.WM_MOUSELEAVE:
_trackingMouse = false;
e = new RawPointerEventArgs(
WindowsMouseDevice.Instance,
timestamp,
_owner,
RawPointerEventType.LeaveWindow,
new Point(), WindowsKeyboardDevice.Instance.Modifiers);
break;
case UnmanagedMethods.WindowsMessage.WM_NCLBUTTONDOWN:
case UnmanagedMethods.WindowsMessage.WM_NCRBUTTONDOWN:
case UnmanagedMethods.WindowsMessage.WM_NCMBUTTONDOWN:
e = new RawPointerEventArgs(
WindowsMouseDevice.Instance,
timestamp,
_owner,
msg == (int)UnmanagedMethods.WindowsMessage.WM_NCLBUTTONDOWN
? RawPointerEventType.NonClientLeftButtonDown
: msg == (int)UnmanagedMethods.WindowsMessage.WM_NCRBUTTONDOWN
? RawPointerEventType.RightButtonDown
: RawPointerEventType.MiddleButtonDown,
new Point(0, 0), GetMouseModifiers(wParam));
break;
case WindowsMessage.WM_TOUCH:
var touchInputs = new TOUCHINPUT[wParam.ToInt32()];
if (GetTouchInputInfo(lParam, (uint)wParam.ToInt32(), touchInputs, Marshal.SizeOf <TOUCHINPUT>()))
{
foreach (var touchInput in touchInputs)
{
var pt = new POINT {
X = touchInput.X / 100, Y = touchInput.Y / 100
};
UnmanagedMethods.ScreenToClient(_hwnd, ref pt);
Input?.Invoke(new RawTouchEventArgs(_touchDevice, touchInput.Time,
_owner,
touchInput.Flags.HasFlag(TouchInputFlags.TOUCHEVENTF_UP) ?
RawPointerEventType.TouchEnd :
touchInput.Flags.HasFlag(TouchInputFlags.TOUCHEVENTF_DOWN) ?
RawPointerEventType.TouchBegin :
RawPointerEventType.TouchUpdate,
new Point(pt.X, pt.Y),
WindowsKeyboardDevice.Instance.Modifiers,
touchInput.Id));
}
CloseTouchInputHandle(lParam);
return(IntPtr.Zero);
}
break;
case WindowsMessage.WM_NCPAINT:
if (!_decorated)
{
return(IntPtr.Zero);
}
break;
case WindowsMessage.WM_NCACTIVATE:
if (!_decorated)
{
return(new IntPtr(1));
}
break;
case UnmanagedMethods.WindowsMessage.WM_PAINT:
UnmanagedMethods.PAINTSTRUCT ps;
if (UnmanagedMethods.BeginPaint(_hwnd, out ps) != IntPtr.Zero)
{
var f = Scaling;
var r = ps.rcPaint;
Paint?.Invoke(new Rect(r.left / f, r.top / f, (r.right - r.left) / f, (r.bottom - r.top) / f));
UnmanagedMethods.EndPaint(_hwnd, ref ps);
}
return(IntPtr.Zero);
case UnmanagedMethods.WindowsMessage.WM_SIZE:
var size = (UnmanagedMethods.SizeCommand)wParam;
if (Resized != null &&
(size == UnmanagedMethods.SizeCommand.Restored ||
size == UnmanagedMethods.SizeCommand.Maximized))
{
var clientSize = new Size(ToInt32(lParam) & 0xffff, ToInt32(lParam) >> 16);
Resized(clientSize / Scaling);
}
var windowState = size == SizeCommand.Maximized ? WindowState.Maximized
: (size == SizeCommand.Minimized ? WindowState.Minimized : WindowState.Normal);
if (windowState != _lastWindowState)
{
_lastWindowState = windowState;
WindowStateChanged?.Invoke(windowState);
}
return(IntPtr.Zero);
case UnmanagedMethods.WindowsMessage.WM_MOVE:
PositionChanged?.Invoke(new PixelPoint((short)(ToInt32(lParam) & 0xffff), (short)(ToInt32(lParam) >> 16)));
return(IntPtr.Zero);
case UnmanagedMethods.WindowsMessage.WM_GETMINMAXINFO:
MINMAXINFO mmi = Marshal.PtrToStructure <UnmanagedMethods.MINMAXINFO>(lParam);
if (_minSize.Width > 0)
{
mmi.ptMinTrackSize.X = (int)((_minSize.Width * Scaling) + BorderThickness.Left + BorderThickness.Right);
}
if (_minSize.Height > 0)
{
mmi.ptMinTrackSize.Y = (int)((_minSize.Height * Scaling) + BorderThickness.Top + BorderThickness.Bottom);
}
if (!Double.IsInfinity(_maxSize.Width) && _maxSize.Width > 0)
{
mmi.ptMaxTrackSize.X = (int)((_maxSize.Width * Scaling) + BorderThickness.Left + BorderThickness.Right);
}
if (!Double.IsInfinity(_maxSize.Height) && _maxSize.Height > 0)
{
mmi.ptMaxTrackSize.Y = (int)((_maxSize.Height * Scaling) + BorderThickness.Top + BorderThickness.Bottom);
}
Marshal.StructureToPtr(mmi, lParam, true);
return(IntPtr.Zero);
case UnmanagedMethods.WindowsMessage.WM_DISPLAYCHANGE:
(Screen as ScreenImpl)?.InvalidateScreensCache();
return(IntPtr.Zero);
}
#if USE_MANAGED_DRAG
if (_managedDrag.PreprocessInputEvent(ref e))
{
return(UnmanagedMethods.DefWindowProc(hWnd, msg, wParam, lParam));
}
#endif
if (e != null && Input != null)
{
Input(e);
if (e.Handled)
{
return(IntPtr.Zero);
}
}
return(UnmanagedMethods.DefWindowProc(hWnd, msg, wParam, lParam));
}
private void decodeTouches(IntPtr wParam, IntPtr lParam)
{
int inputCount = LOWORD(wParam.ToInt32());
TOUCHINPUT[] inputs = new TOUCHINPUT[inputCount];
if (!GetTouchInputInfo(lParam, inputCount, inputs, touchInputSize))
{
return;
}
for (int i = 0; i < inputCount; i++)
{
TOUCHINPUT touch = inputs[i];
if ((touch.dwFlags & (int)TouchEvent.TOUCHEVENTF_DOWN) != 0)
{
POINT p = new POINT();
p.X = touch.x/100;
p.Y = touch.y/100;
ScreenToClient(hMainWindow, ref p);
winToInternalId.Add(touch.dwID, beginTouch(new Vector2(p.X, Screen.height - p.Y)));
} else if ((touch.dwFlags & (int)TouchEvent.TOUCHEVENTF_UP) != 0)
{
int existingId;
if (winToInternalId.TryGetValue(touch.dwID, out existingId))
{
winToInternalId.Remove(touch.dwID);
endTouch(existingId);
}
} else if ((touch.dwFlags & (int)TouchEvent.TOUCHEVENTF_MOVE) != 0)
{
int existingId;
if (winToInternalId.TryGetValue(touch.dwID, out existingId))
{
POINT p = new POINT();
p.X = touch.x/100;
p.Y = touch.y/100;
ScreenToClient(hMainWindow, ref p);
moveTouch(existingId, new Vector2(p.X, Screen.height - p.Y));
}
}
}
CloseTouchInputHandle(lParam);
}
void processTouches(IntPtr wParam, IntPtr lParam)
{
int inputCount = LOWORD(wParam.ToInt32());
TOUCHINPUT[] inputs = new TOUCHINPUT[inputCount];
if (!GetTouchInputInfo(lParam, inputCount, inputs, touchInputSize))
{
return;
}
for (int i = 0; i < inputCount; i++)
{
TOUCHINPUT touch = inputs[i];
updateTouchFromWM(touch);
}
CloseTouchInputHandle(lParam);
}
/// <summary>
/// WM_TOUCHメッセージをデコードする
/// </summary>
/// <param name="m">ウィンドウメッセージ</param>
private bool DecodeTouch(ref Message m)
{
// タッチ回数
int inputCount = LoWord(m.WParam.ToInt32());
TOUCHINPUT[] inputs;
inputs = new TOUCHINPUT[inputCount];
// タッチ操作を取り出して構造体の配列に入れる
if (!GetTouchInputInfo(m.LParam, inputCount, inputs, touchInputSize))
{
// タッチ情報取得失敗
return(false);
}
// タッチ操作をハンドラにディスパッチする
bool handled = false;
for (int i = 0; i < inputCount; i++)
{
TOUCHINPUT ti = inputs[i];
// タッチイベントをハンドラにアサインする
EventHandler <WMTouchEventArgs> handler = null;
if ((ti.dwFlags & TOUCHEVENTF_DOWN) != 0)
{
handler = TouchDown;
}
else if ((ti.dwFlags & TOUCHEVENTF_UP) != 0)
{
handler = TouchUp;
}
else if ((ti.dwFlags & TOUCHEVENTF_MOVE) != 0)
{
handler = TouchMove;
}
// メッセージパラメータをタッチイベント引数に変換してイベントを処理する
if (handler != null)
{
// raw touchinputメッセージをタッチイベントに変換する
WMTouchEventArgs te = new WMTouchEventArgs();
// タッチイベントが発生した画面のXY位置を取得する
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;
// イベントハンドラを呼び出す
handler(this, te);
// このイベントを処理済としてマークする
handled = true;
}
}
CloseTouchInputHandle(m.LParam);
return(handled);
}
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);
}
// Decodes and handles WM_TOUCH message.
// Unpacks message arguments and invokes appropriate touch events.
// in:
// m window message
// returns:
// whether the message has been handled
private bool DecodeTouch(ref Message m)
{
// More than one touchinput may be associated with a touch message,
// so an array is needed to get all event information.
int inputCount = LoWord(m.WParam.ToInt32()); // Number of touch inputs, actual per-contact messages
TOUCHINPUT[] inputs; // Array of TOUCHINPUT structures
inputs = new TOUCHINPUT[inputCount]; // Allocate the storage for the parameters of the per-contact messages
// Unpack message parameters into the array of TOUCHINPUT structures, each
// representing a message for one single contact.
if (!GetTouchInputInfo(m.LParam, inputCount, inputs, touchInputSize))
{
// Get touch info failed.
return false;
}
// For each contact, dispatch the message to the appropriate message
// handler.
bool handled = false; // Boolean, is message handled
for (int i = 0; i < inputCount; i++)
{
TOUCHINPUT ti = inputs[i];
// Assign a handler to this message.
EventHandler<WMTouchEventArgs> handler = null; // Touch event handler
if ((ti.dwFlags & TOUCHEVENTF_DOWN) != 0)
{
handler = Touchdown;
}
else if ((ti.dwFlags & TOUCHEVENTF_UP) != 0)
{
handler = Touchup;
}
else if ((ti.dwFlags & TOUCHEVENTF_MOVE) != 0)
{
handler = TouchMove;
}
// Convert message parameters into touch event arguments and handle the event.
if (handler != null)
{
// Convert the raw touchinput message into a touchevent.
WMTouchEventArgs te = new WMTouchEventArgs(); // Touch event arguments
// 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;
// Invoke the event handler.
handler(this, te);
// Mark this event as handled.
handled = true;
}
}
CloseTouchInputHandle(m.LParam);
return handled;
}
// Decodes and handles WM_TOUCH* messages.
// Unpacks message arguments and invokes appropriate touch events.
// in:
// m window message
// returns:
// flag whether the message has been handled
public bool DecodeTouch(ref Message m)
{
// More than one touchinput may be associated with a touch message,
// so an array is needed to get all event information.
int inputCount = LoWord(m.WParam.ToInt32()); // Number of touch inputs, actual per-contact messages
TOUCHINPUT[] inputs; // Array of TOUCHINPUT structures
try
{
inputs = new TOUCHINPUT[inputCount]; // Allocate the storage for the parameters of the per-contact messages
}
catch (Exception exception)
{
Debug.Print("ERROR: Could not allocate inputs array");
Debug.Print(exception.ToString());
return false;
}
Debug.Print("Inputs: " + inputs.Length.ToString());
// Unpack message parameters into the array of TOUCHINPUT structures, each
// representing a message for one single contact.
//Exercise2-Task1-Step3
if (!GetTouchInputInfo(m.LParam, inputCount, inputs, touchInputSize))
{
// Get touch info failed.
return false;
}
// For each contact, dispatch the message to the appropriate message
// handler.
// Note that for WM_TOUCHDOWN you can get down & move notifications
// and for WM_TOUCHUP you can get up & move notifications
// WM_TOUCHMOVE will only contain move notifications
// and up & down notifications will never come in the same message
bool handled = false; // // Flag, is message handled
//Exercise2-Task1-Step4
for (int i = 0; i < inputCount; i++)
{
TOUCHINPUT ti = inputs[i];
// Assign a handler to this message.
EventHandler<WMTouchEventArgs> handler = null; // Touch event handler
if ((ti.dwFlags & TOUCHEVENTF_DOWN) != 0)
{
handler = Touchdown;
}
else if ((ti.dwFlags & TOUCHEVENTF_UP) != 0)
{
handler = Touchup;
}
else if ((ti.dwFlags & TOUCHEVENTF_MOVE) != 0)
{
handler = TouchMove;
}
Debug.Print("Inputs: " + inputs.Length.ToString() + "\r\nCoordinates: " + ti.x.ToString() + "," + ti.y.ToString());
// Convert message parameters into touch event arguments and handle the event.
if (handler != null)
{
// Convert the raw touchinput message into a touchevent.
WMTouchEventArgs te; // Touch event arguments
try
{
te = new WMTouchEventArgs();
}
catch (Exception excep)
{
Debug.Print("Could not allocate WMTouchEventArgs");
Debug.Print(excep.ToString());
continue;
}
// 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;
// Invoke the event handler.
handler(this, te);
// Mark this event as handled.
handled = true;
}
}
CloseTouchInputHandle(m.LParam);
return handled;
}
private bool DecodeTouch(ref System.Windows.Forms.Message m)
{
TOUCHINPUT[] touchinputArray;
int cInputs = LoWord(m.WParam.ToInt32());
try
{
touchinputArray = new TOUCHINPUT[cInputs];
}
catch (Exception exception)
{
Debug.Print("ERROR: Could not allocate inputs array");
Debug.Print(exception.ToString());
return(false);
}
if (!GetTouchInputInfo(m.LParam, cInputs, touchinputArray, this.touchInputSize))
{
return(false);
}
bool flag = false;
for (int i = 0; i < cInputs; i++)
{
TOUCHINPUT touchinput = touchinputArray[i];
EventHandler <EventArgs> handler = null;
if ((touchinput.dwFlags & 2) != 0)
{
handler = new EventHandler <EventArgs>(this.Touchdown);
}
else if ((touchinput.dwFlags & 4) != 0)
{
handler = new EventHandler <EventArgs>(this.Touchup);
}
else if ((touchinput.dwFlags & 1) != 0)
{
handler = new EventHandler <EventArgs>(this.TouchMove);
}
if (handler != null)
{
EventArgs args;
try
{
args = new EventArgs();
}
catch (Exception exception2)
{
Debug.Print("Could not allocate WMTouchEventArgs");
Debug.Print(exception2.ToString());
continue;
}
args.ContactY = touchinput.cyContact / 100;
args.ContactX = touchinput.cxContact / 100;
args.Id = touchinput.dwID;
Microsoft.Xna.Framework.Point point = new Microsoft.Xna.Framework.Point(touchinput.x / 100, touchinput.y / 100);
args.LocationX = point.X;
args.LocationY = point.Y;
args.Time = touchinput.dwTime;
args.Mask = touchinput.dwMask;
args.Flags = touchinput.dwFlags;
handler(this, args);
flag = true;
}
}
CloseTouchInputHandle(m.LParam);
return(flag);
}
private bool DecodeTouch(ref System.Windows.Forms.Message m)
{
TOUCHINPUT[] touchinputArray;
int cInputs = LoWord(m.WParam.ToInt32());
try
{
touchinputArray = new TOUCHINPUT[cInputs];
}
catch (Exception exception)
{
Debug.Print("ERROR: Could not allocate inputs array");
Debug.Print(exception.ToString());
return false;
}
if (!GetTouchInputInfo(m.LParam, cInputs, touchinputArray, this.touchInputSize))
{
return false;
}
bool flag = false;
for (int i = 0; i < cInputs; i++)
{
TOUCHINPUT touchinput = touchinputArray[i];
EventHandler<EventArgs> handler = null;
if ((touchinput.dwFlags & 2) != 0)
{
handler = new EventHandler<EventArgs>(this.Touchdown);
}
else if ((touchinput.dwFlags & 4) != 0)
{
handler = new EventHandler<EventArgs>(this.Touchup);
}
else if ((touchinput.dwFlags & 1) != 0)
{
handler = new EventHandler<EventArgs>(this.TouchMove);
}
if (handler != null)
{
EventArgs args;
try
{
args = new EventArgs();
}
catch (Exception exception2)
{
Debug.Print("Could not allocate WMTouchEventArgs");
Debug.Print(exception2.ToString());
continue;
}
args.ContactY = touchinput.cyContact / 100;
args.ContactX = touchinput.cxContact / 100;
args.Id = touchinput.dwID;
Microsoft.Xna.Framework.Point point = new Microsoft.Xna.Framework.Point(touchinput.x / 100, touchinput.y / 100);
args.LocationX = point.X;
args.LocationY = point.Y;
args.Time = touchinput.dwTime;
args.Mask = touchinput.dwMask;
args.Flags = touchinput.dwFlags;
handler(this, args);
flag = true;
}
}
CloseTouchInputHandle(m.LParam);
return flag;
}
/// <summary>
/// Decodes a single touch point and creates from it the <see cref="PointerPoint"/> class.
/// </summary>
/// <param name="input">The touch point input structure.</param>
private void DecodeAndDispatchTouchPoint(TOUCHINPUT input)
{
var p = control.PointToClient(new System.Drawing.Point(AdjustX(input.x), AdjustY(input.y)));
var mask = input.dwMask;
var flags = input.dwFlags;
var isPrimary = (flags & User32.TOUCHEVENTF_PRIMARY) != 0;
PointerUpdateKind pointerUpdateKind;
PointerEventType eventType;
if ((flags & User32.TOUCHEVENTF_DOWN) != 0)
{
pointerUpdateKind = PointerUpdateKind.LeftButtonPressed;
eventType = PointerEventType.Pressed;
}
else if ((flags & User32.TOUCHEVENTF_DOWN) != 0)
{
pointerUpdateKind = PointerUpdateKind.LeftButtonReleased;
eventType = PointerEventType.Released;
}
else
{
pointerUpdateKind = PointerUpdateKind.Other;
eventType = PointerEventType.Moved;
}
var clientSize = control.ClientSize;
var position = new Vector2((float)p.X / clientSize.Width, (float)p.Y / clientSize.Height);
position.Saturate();
var point = new PointerPoint
{
EventType = eventType,
DeviceType = ((flags & User32.TOUCHEVENTF_PEN) != 0) ? PointerDeviceType.Pen : PointerDeviceType.Touch,
PointerId = (uint)input.dwID,
Timestamp = (ulong)input.dwTime,
Position = position,
KeyModifiers = GetCurrentKeyModifiers(),
IsPrimary = isPrimary,
IsInRange = (flags & User32.TOUCHEVENTF_INRANGE) != 0,
TouchConfidence = (flags & User32.TOUCHEVENTF_PALM) != 0,
PointerUpdateKind = pointerUpdateKind,
};
if ((mask & User32.TOUCHINPUTMASKF_CONTACTAREA) != 0)
point.ContactRect = new RectangleF(position.X, position.Y, (float)AdjustX(input.cxContact) / clientSize.Width, (float)AdjustY(input.cyContact) / clientSize.Height);
manager.AddPointerEvent(ref point);
}
/// <summary>
/// Decodes touch messages and calls corresponding methods on <see cref="PointerManager"/> class
/// </summary>
/// <param name="wParam">wParam</param>
/// <param name="lParam">lParam</param>
private void DecodeAndDispatchTouchMessages(IntPtr wParam, IntPtr lParam)
{
var inputsCount = User32.LoWord(wParam.ToInt32());
var inputs = new TOUCHINPUT[inputsCount];
try
{
if (!User32.GetTouchInputInfo(lParam, inputsCount, inputs, Marshal.SizeOf(typeof(TOUCHINPUT))))
throw new InvalidOperationException("Error calling GetTouchInfo API");
for (var i = 0; i < inputsCount; i++)
DecodeAndDispatchTouchPoint(inputs[i]);
}
finally
{
User32.CloseTouchInputHandle(lParam);
}
}
void updateTouchFromWM(TOUCHINPUT WM_T)
{
lock(m_lock)
{
if ((WM_T.dwFlags & (int)TouchEvent.TOUCHEVENTF_MOVE) != 0)
{
current[WM_T.dwID] = WM_T;
}
if ((WM_T.dwFlags & (int)TouchEvent.TOUCHEVENTF_DOWN) != 0)
{
current.Add(WM_T.dwID, WM_T);
}
if ((WM_T.dwFlags & (int)TouchEvent.TOUCHEVENTF_UP) != 0)
{
current.Remove(WM_T.dwID);
}
}
}
public int TouchHookProc(int nCode, IntPtr wParam, IntPtr lParam) {
if (nCode < 0) {
return CallNextHookEx(0, nCode, wParam, lParam);
}
switch (nCode) {
case HC_ACTION:
MSG msg = (MSG)Marshal.PtrToStructure(lParam, typeof(MSG));
// It's ok to call this several times
RegisterTouchWindow(msg.hwnd, TWF_WANTPALM);
//RegisterPointerInputTarget(msg.hwnd, (int)POINTER_INPUT_TYPE.PT_TOUCH);
switch (msg.message) {
case WM_TOUCH:
int inputCount = LoWord(msg.wParam.ToInt32());
inputs = new TOUCHINPUT[inputCount];
if (GetTouchInputInfo(msg.lParam, inputCount, inputs, Marshal.SizeOf(typeof(TOUCHINPUT)))) {
lock (rawTouchesQueue) {
rawTouchesQueue.Enqueue(inputs);
}
CloseTouchInputHandle(msg.lParam);
}
break;
case WM_NCPOINTERDOWN:
case WM_NCPOINTERUP:
case WM_NCPOINTERUPDATE:
case WM_POINTERACTIVATE:
case WM_POINTERCAPTURECHANGED:
case WM_POINTERDOWN:
case WM_POINTERENTER:
case WM_POINTERLEAVE:
case WM_POINTERUP:
case WM_POINTERUPDATE:
uint pointerID = (uint)LoWord(msg.wParam.ToInt32());
POINTER_INFO pointerInfo = new POINTER_INFO();
if (GetPointerInfo(pointerID, ref pointerInfo)) {
inputs = new TOUCHINPUT[1];
inputs[0] = new TOUCHINPUT();
inputs[0].dwID = pointerInfo.pointerID;
inputs[0].x = (uint)pointerInfo.ptPixelLocation.X * 100;
inputs[0].y = (uint)pointerInfo.ptPixelLocation.Y * 100;
inputs[0].dwFlags = 0;
if ((pointerInfo.pointerFlags & POINTER_FLAG_DOWN) == POINTER_FLAG_DOWN) {
inputs[0].dwFlags |= TOUCHEVENTF_DOWN;
}
if ((pointerInfo.pointerFlags & POINTER_FLAG_UPDATE) == POINTER_FLAG_UPDATE) {
inputs[0].dwFlags |= TOUCHEVENTF_MOVE;
}
if ((pointerInfo.pointerFlags & POINTER_FLAG_UP) == POINTER_FLAG_UP) {
inputs[0].dwFlags |= TOUCHEVENTF_UP;
}
lock (rawTouchesQueue) {
rawTouchesQueue.Enqueue(inputs);
}
}
break;
}
break;
}
return CallNextHookEx(0, nCode, wParam, lParam);
}
// Decodes and handles WM_TOUCH message.
// Unpacks message arguments and invokes appropriate touch events.
// in:
// m window message
// returns:
// whether the message has been handled
private bool DecodeTouch(ref Message m)
{
// More than one touchinput may be associated with a touch message,
// so an array is needed to get all event information.
int inputCount = LoWord(m.WParam.ToInt32()); // Number of touch inputs, actual per-contact messages
TOUCHINPUT[] inputs; // Array of TOUCHINPUT structures
inputs = new TOUCHINPUT[inputCount]; // Allocate the storage for the parameters of the per-contact messages
// Unpack message parameters into the array of TOUCHINPUT structures, each
// representing a message for one single contact.
if (!GetTouchInputInfo(m.LParam, inputCount, inputs, touchInputSize))
{
// Get touch info failed.
return(false);
}
// For each contact, dispatch the message to the appropriate message
// handler.
bool handled = false; // Boolean, is message handled
for (int i = 0; i < inputCount; i++)
{
TOUCHINPUT ti = inputs[i];
// Assign a handler to this message.
EventHandler <WMTouchEventArgs> handler = null; // Touch event handler
if ((ti.dwFlags & TOUCHEVENTF_DOWN) != 0)
{
handler = Touchdown;
}
else if ((ti.dwFlags & TOUCHEVENTF_UP) != 0)
{
handler = Touchup;
}
else if ((ti.dwFlags & TOUCHEVENTF_MOVE) != 0)
{
handler = TouchMove;
}
// Convert message parameters into touch event arguments and handle the event.
if (handler != null)
{
// Convert the raw touchinput message into a touchevent.
WMTouchEventArgs te = new WMTouchEventArgs(); // Touch event arguments
// 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;
// Invoke the event handler.
handler(this, te);
// Mark this event as handled.
handled = true;
}
}
CloseTouchInputHandle(m.LParam);
return(handled);
}
public POINT getClientPoint(TOUCHINPUT WM_T)
{
POINT p = new POINT();
p.X = WM_T.x / 100;
p.Y = WM_T.y / 100;
ScreenToClient(hMainWindow, ref p);
return p;
}
