// 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);
}
}
