vtk 观察者与命令模式: vtkCommand

 #ifndef MAINWINDOW_H

    
 #define MAINWINDOW_H
    
  
    
 #include <QMainWindow>
    
 #include <vtkAutoInit.h>
    
 VTK_MODULE_INIT(vtkRenderingOpenGL2)
    
 VTK_MODULE_INIT(vtkInteractionStyle)
    
 #include <vtkSmartPointer.h>
    
 #include <vtkCommand.h>
    
 #include <vtkRenderWindowInteractor.h>
    
 #include <QDebug>
    
 #include <QMouseEvent>
    
  
    
 class vtkRenderer;
    
 class vtkImageViewer2;
    
 class vtkObject;
    
  
    
 namespace Ui {
    
 class MainWindow;
    
 }
    
  
    
 class MyMouseCommand;
    
 class MainWindow : public QMainWindow