[vtkusers] MFC & Interactor

[Nigel Nunn]

Hi Ted, 
 
> Has anyone developed an MFC application that uses 
> these events OnLButtonDown, OnLButtonUp, OnMouseMove 
> instead of the WindowProc? 
 
We handle all interaction in the usual MFC way, then when we 
have finished processing the event, pass the message to the 
Vtk subsystem with a direct call to vtkHandleMessage2(...) 
 
LRESULT vtkMFCRenderView::CallInteractor(UINT uMsg, WPARAM wParam, LPARAM
lParam) 
{ 
  // Replaces... WindowProc(UINT, WPARAM, LPARAM) 
  // Maintain individual event handlers that pass 
  // control here. 
  if (m_IRen->GetInitialized()) 
  { 
    return vtkHandleMessage2(m_hWnd, uMsg, wParam, lParam, m_IRen); 
  } 
  return 0; 
} 
 
Working purrfectly, but required some careful translation 
of uMsg, wParam, and lParam!  :-) 
 
Nigel 


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