/// <summary>
/// Decode Mouse Click messages. If Exit clicked, exit application with result = Fail
/// </summary>
/// <param name="m">The Windows Message to decode.</param>
private void DecodeMouseClick(ref Message m)
{
Point point = new Point(m.LParam.ToInt32());
Control c = PenPanel.GetChildAtPoint(point);
if (c != null && c == ExitLbl)
{
Program.ExitApplication(255);
}
}
/// <summary>
/// Decode Pen messages. Clear control based on position of Pen action.
/// </summary>
/// <param name="m">The Windows Message to decode.</param>
private void DecodePointer(ref Message m)
{
int pointerId = LoWord(m.WParam.ToInt32());
NativeMethods.POINTER_INFO pointer = new NativeMethods.POINTER_INFO();
if (!NativeMethods.GetPointerInfo(pointerId, ref pointer))
{
// Get pointer info failed.
return;
}
if (pointer.pointerType == NativeMethods.POINTER_INPUT_TYPE.PEN)
{
if (pointer.PointerFlags.HasFlag(NativeMethods.POINTER_FLAGS.INCONTACT))
{
Point screenPoint = new Point(pointer.PtPixelLocation.X, pointer.PtPixelLocation.Y);
Point panelPoint = PenPanel.PointToClient(screenPoint);
Control c = PenPanel.GetChildAtPoint(panelPoint);
if (c == null)
{
return;
}
if (pointer.PointerFlags.HasFlag(NativeMethods.POINTER_FLAGS.FIRSTBUTTON) &&
(c.BackColor == Color.YellowGreen || c.BackColor == Color.Crimson))
{
//pen down
c.Dispose();
}
else if (pointer.PointerFlags.HasFlag(NativeMethods.POINTER_FLAGS.SECONDBUTTON) &&
c.BackColor == Color.Gold)
{
//pen erase (POINTER_FLAGS.SECONDBUTTON)
c.Dispose();
}
//check if grids are cleared
CheckFinish();
}
}
}
