// Handle Mouse Events: -------------------------------------------
// In all cases, the same thing needs to happen: figure out where the cursor
// is, and then figure out the state of all mouse buttons.
// TODO: currently we don't handle the case of 3-button emulation with 2-buttons.
protected override void OnMouseMove(MouseEventArgs mea)
{
// Only bother if the control is connected.
if (IsConnected)
{
// See if the mouse pointer is inside the area occupied by the desktop on screen.
Rectangle adjusted = desktopPolicy.GetMouseMoveRectangle();
if (adjusted.Contains(PointToClient(MousePosition)))
{
UpdateRemotePointer();
}
}
base.OnMouseMove(mea);
}
private void UpdateRemotePointer()
{
// HACK: this check insures that while in DesignMode, no messages are sent to a VNC Host
// (i.e., there won't be one--NullReferenceException)
if (!DesignMode && IsConnected)
{
Point current = PointToClient(MousePosition);
byte mask = 0;
if (Control.MouseButtons == MouseButtons.Left)
{
mask += 1;
}
if (Control.MouseButtons == MouseButtons.Middle)
{
mask += 2;
}
if (Control.MouseButtons == MouseButtons.Right)
{
mask += 4;
}
Rectangle adjusted = desktopPolicy.GetMouseMoveRectangle();
if (adjusted.Contains(current))
{
vnc.WritePointerEvent(mask, desktopPolicy.UpdateRemotePointer(current));
}
}
}