private void DecodeTouch(IntPtr wparam, IntPtr lparam)
{
int cInputs = LoWord(wparam.ToInt32());
if (cInputs == 0)
{
Win32.CloseTouchInputHandle(lparam);
}
else
{
TOUCHINPUT[] pInputs = new TOUCHINPUT[cInputs];
if (!Win32.GetTouchInputInfo(lparam, cInputs, pInputs, this.mdTouchInputSize))
{
Win32.GetLastError();
}
else
{
for (int i = 0; i < cInputs; i++)
{
TOUCHINPUT touchinput = pInputs[i];
EventHandler <TouchEventArgs> touchDown = null;
if ((touchinput.dwFlags & 2L) != 0L)
{
touchDown = this.TouchDown;
}
else if ((touchinput.dwFlags & 4L) != 0L)
{
touchDown = this.TouchUp;
}
else if ((touchinput.dwFlags & 1L) != 0L)
{
touchDown = this.TouchMove;
}
if (touchDown != null)
{
TouchEventArgs e = new TouchEventArgs();
e.contactX = touchinput.cxContact / 100;
e.contactY = touchinput.cyContact / 100;
e.id = touchinput.dwID;
e.x = (int)(((float)(touchinput.x / 100)) / this.scalingFactorX);
e.y = (int)(((float)(touchinput.y / 100)) / this.scalingFactorY);
e.time = touchinput.dwTime;
e.mask = touchinput.dwMask;
e.flags = touchinput.dwFlags;
touchDown(this, e);
}
}
Win32.CloseTouchInputHandle(lparam);
}
}
}
private void DecodeTouch(IntPtr wparam, IntPtr lparam)
{
int cInputs = LoWord(wparam.ToInt32());
if (cInputs == 0)
{
Win32.CloseTouchInputHandle(lparam);
}
else
{
TOUCHINPUT[] pInputs = new TOUCHINPUT[cInputs];
if (!Win32.GetTouchInputInfo(lparam, cInputs, pInputs, this.mdTouchInputSize))
{
Win32.GetLastError();
}
else
{
for (int i = 0; i < cInputs; i++)
{
TOUCHINPUT touchinput = pInputs[i];
EventHandler<TouchEventArgs> touchDown = null;
if ((touchinput.dwFlags & 2L) != 0L)
{
touchDown = this.TouchDown;
}
else if ((touchinput.dwFlags & 4L) != 0L)
{
touchDown = this.TouchUp;
}
else if ((touchinput.dwFlags & 1L) != 0L)
{
touchDown = this.TouchMove;
}
if (touchDown != null)
{
TouchEventArgs e = new TouchEventArgs();
e.contactX = touchinput.cxContact / 100;
e.contactY = touchinput.cyContact / 100;
e.id = touchinput.dwID;
e.x = (int) (((float) (touchinput.x / 100)) / this.scalingFactorX);
e.y = (int) (((float) (touchinput.y / 100)) / this.scalingFactorY);
e.time = touchinput.dwTime;
e.mask = touchinput.dwMask;
e.flags = touchinput.dwFlags;
touchDown(this, e);
}
}
Win32.CloseTouchInputHandle(lparam);
}
}
}
/// <summary>
/// Decodes and handles WM_TOUCH message
/// Unpacks message arguments and invokes appropriate touch events.
/// </summary>
/// <param name="message">window message</param>
private void DecodeTouch(IntPtr wparam, IntPtr lparam)
{
// More than one touchinput structure may be with each message, so an array is needed
// to get all event information
// Actual number of touch inputs
int inputCount = LoWord(wparam.ToInt32());
//just in case
if (inputCount == 0)
{
Win32.CloseTouchInputHandle(lparam);
return;
}
// Allocate the memory for the touch input structs
TOUCHINPUT[] inputs;
inputs = new TOUCHINPUT[inputCount];
// Unpack message parameter into the array of TOUCHINPUT structures
// Each one represents a message for one single contact
if (!Win32.GetTouchInputInfo(lparam, inputCount, inputs, mdTouchInputSize))
{
// Get touch info failed
Int32 lastError = Win32.GetLastError();
Debug.Assert(false, "GetTouchInputInfo() failed error=0x", lastError.ToString("X"));
return;
}
for (int i = 0; i < inputCount; ++i)
{
TOUCHINPUT touchInput = inputs[i];
/*
* if ((touchInput.dwFlags & Win32.TOUCHEVENTF_MOVE) == 0)
* {
* Console.Write(i.ToString() + ")x=" + touchInput.x.ToString());
* Console.Write(", y=" + touchInput.y.ToString());
* Console.Write(", Flags=0x" + touchInput.dwFlags.ToString("X"));
* Console.Write(", Mask =0x" + touchInput.dwMask.ToString("X"));
* Console.Write(", Time =0x" + touchInput.dwTime.ToString("X"));
* Console.Write(", Info=0x" + touchInput.dwExtraInfo.ToString("X"));
* Console.Write(", cx=0x" + touchInput.cxContact.ToString("X"));
* Console.WriteLine(", cy=0x" + touchInput.cyContact.ToString("X"));
* }
*/
// Assign a handler to this message
EventHandler <TouchEventArgs> handler = null;
if ((touchInput.dwFlags & Win32.TOUCHEVENTF_DOWN) != 0)
{
#if STRESS_TEST
Console.WriteLine("Touch Down:" + touchInput.dwID.ToString() + " wparam=" + wparam.ToString("X") + ", lparam=" + lparam.ToString("X"));
#endif
handler = TouchDown;
}
else if ((touchInput.dwFlags & Win32.TOUCHEVENTF_UP) != 0)
{
#if STRESS_TEST
Console.WriteLine("Touch Up:" + touchInput.dwID.ToString() + " wparam=" + wparam.ToString("X") + ", lparam=" + lparam.ToString("X"));
#endif
handler = TouchUp;
}
else if ((touchInput.dwFlags & Win32.TOUCHEVENTF_MOVE) != 0)
{
#if STRESS_TEST
//Console.WriteLine("Touch Move:" + touchInput.dwID.ToString() + " wparam=" + wparam.ToString("X") + ", lparam=" + lparam.ToString("X"));
#endif
handler = TouchMove;
}
if (handler != null)
{
TouchEventArgs args = new TouchEventArgs();
// Convert message parameters into a touch event argument structure
// Convert to pixels and convert screen to client coordinates
// See [winuser.h] for:
// #define TOUCH_COORD_TO_PIXEL(l) ((l) / 100)
args.contactX = touchInput.cxContact / 100;
args.contactY = touchInput.cyContact / 100;
args.id = touchInput.dwID;
// Touch coordinates are in absolute screen space, not bound to the client rectangle.
// These will have to be converted into client space after the event is captured.
args.x = (int)(touchInput.x / 100 / scalingFactorX);
args.y = (int)(touchInput.y / 100 / scalingFactorY);
args.time = touchInput.dwTime;
args.mask = touchInput.dwMask;
args.flags = touchInput.dwFlags;
handler(this, args);
#if STRESS_TEST
//record the event
if ((touchInput.dwFlags & Win32.TOUCHEVENTF_DOWN) != 0)
{
args.wparam = wparam;
args.lparam = lparam;
TouchEventArgs other = new TouchEventArgs(args);
TouchEventArgs down = new TouchEventArgs(args);
string Message = "";
int foundID = 0;
int count = touchEventArgsTrackList.Count;
//scan to see if this event exists
foreach (TouchEventArgs touchArgs in touchEventArgsTrackList)
{
if (touchArgs.id == args.id)
{
foundID++;
Message += args.id.ToString() + ',';
}
}
if (foundID > 0)
{
DialogResult result;
Message += '\n';
result = MessageBox.Show("id count=" + foundID.ToString() + "\n"
+ Message
,
"Duplicate id's found",
MessageBoxButtons.OKCancel, MessageBoxIcon.Exclamation);
}
touchEventArgsTrackList.Add(other);
touchEventArgsTrackDownList.Add(down);
}
if ((touchInput.dwFlags & Win32.TOUCHEVENTF_UP) != 0)
{
//scan to see if this event has a matching down
foreach (TouchEventArgs touchArgs in touchEventArgsTrackList)
{
if (touchArgs.id == args.id)
{
touchEventArgsTrackList.Remove(touchArgs);
break;
}
}
}
#endif
}
}
Win32.CloseTouchInputHandle(lparam);
}