Method Enable

Rendering/UI/vtkXRenderWindowInteractor.cxx:476–523

------------------------------------------------------------------------------

//------------------------------------------------------------------------------
void vtkXRenderWindowInteractor::Enable()
{
  // avoid cycles of calling Initialize() and Enable()
  if (this->Enabled)
  {
    return;
  }
  // When we're attached to an offscreen render window,
  // there is no real X Display or X Window.
  if (!this->WindowId || !this->DisplayId)
  {
    this->Enabled = 1;
    this->Modified();
    return;
  }

  // Add the event handler to the system.
  // If we change the types of events processed by this handler, then
  // we need to change the Disable() routine to match.  In order for Disable()
  // to work properly, both the callback function AND the client data
  // passed to XtAddEventHandler and XtRemoveEventHandler must MATCH
  // PERFECTLY
  vtkXSelectInput(this->DisplayId, this->WindowId,
    KeyPressMask | KeyReleaseMask | ButtonPressMask | ButtonReleaseMask | ExposureMask |
      StructureNotifyMask | EnterWindowMask | LeaveWindowMask | PointerMotionHintMask |
      PointerMotionMask);

  // Setup for capturing the window deletion
  this->KillAtom = vtkXInternAtom(this->DisplayId, "WM_DELETE_WINDOW", False);
  vtkXSetWMProtocols(this->DisplayId, this->WindowId, &this->KillAtom, 1);

  // Enable drag and drop
  Atom xdndAwareAtom = vtkXInternAtom(this->DisplayId, "XdndAware", False);
  vtkXChangeProperty(
    this->DisplayId, this->WindowId, xdndAwareAtom, XA_ATOM, 32, PropModeReplace, &XDND_VERSION, 1);
  this->XdndURIListAtom = vtkXInternAtom(this->DisplayId, "text/uri-list", False);
  this->XdndTypeListAtom = vtkXInternAtom(this->DisplayId, "XdndTypeList", False);
  this->XdndEnterAtom = vtkXInternAtom(this->DisplayId, "XdndEnter", False);
  this->XdndPositionAtom = vtkXInternAtom(this->DisplayId, "XdndPosition", False);
  this->XdndDropAtom = vtkXInternAtom(this->DisplayId, "XdndDrop", False);
  this->XdndActionCopyAtom = vtkXInternAtom(this->DisplayId, "XdndActionCopy", False);
  this->XdndStatusAtom = vtkXInternAtom(this->DisplayId, "XdndStatus", False);
  this->XdndFinishedAtom = vtkXInternAtom(this->DisplayId, "XdndFinished", False);

  this->Enabled = 1;

  this->Modified();
}

//------------------------------------------------------------------------------
void vtkXRenderWindowInteractor::Disable()