protected virtual void RaiseHwndMouseLClick(HwndMouseEventArgs args)
{
var handler = MouseLClick;
if (handler != null)
{
handler(this, args);
}
}
// Handle mouse movement.
private void BarGraphHostControl_MouseMoved(object sender, HwndMouseEventArgs e)
{
// Adjust light position.
if (currentGraph != null)
{
Point adjustedTopLeft = GetControlPointInDIP();
// Get point relative to control.
Point relativePoint = new Point(e.point.X - adjustedTopLeft.X, e.point.Y - adjustedTopLeft.Y);
// Update light position.
currentGraph.UpdateLight(relativePoint);
}
}
private void HostControl_MouseMoved(object sender, HwndMouseEventArgs e)
{
// Adjust light position.
if (currentGraph != null)
{
// Convert mouse position to DIP (is raised in physical pixels).
var posDip = GetPointInDIP(e.point);
var adjustedTopLeft = GetControlPointInDIP(CompositionHostElement);
// Get point relative to control.
var relativePoint = new SysWin.Point(posDip.X - adjustedTopLeft.X, posDip.Y - adjustedTopLeft.Y);
// Update light position.
currentGraph.UpdateLight(relativePoint);
}
}
protected override IntPtr WndProc(IntPtr hwnd, int msg, IntPtr wParam, IntPtr lParam, ref bool handled)
{
switch ((User32.WM)msg)
{
case User32.WM.WM_MOUSEMOVE:
var pos = PointToScreen(new Point((short)(((int)lParam) & 0xffff), (short)(((int)lParam) >> 16)));
var hwndMouseEventArgs = new HwndMouseEventArgs();
hwndMouseEventArgs.Point = pos;
RaiseHwndMouseMove(hwndMouseEventArgs);
break;
case User32.WM.WM_LBUTTONDOWN:
RaiseHwndMouseLClick(new HwndMouseEventArgs());
break;
case User32.WM.WM_PAINT:
RaisePaint();
break;
}
return(base.WndProc(hwnd, msg, wParam, lParam, ref handled));
}
protected virtual void RaiseHwndMouseLClick(HwndMouseEventArgs args)
{
MouseLClick?.Invoke(this, args);
}
protected virtual void RaiseHwndMouseMove(HwndMouseEventArgs args)
{
MouseMoved?.Invoke(this, args);
}
private void RaiseHwndMouseLClick(HwndMouseEventArgs args)
{
MouseLClick?.Invoke(this, args);
}
private void RaiseHwndMouseMove(HwndMouseEventArgs args)
{
MouseMoved?.Invoke(this, args);
}
