Program function is very simple, click on the button, then select images, display images in the QVTKWidget controls,
Below is the code:

 
Test. H 
# # ifndef TEST_H 
# define TEST_H 

# include & lt; QtWidgets/QMainWindow> 
# include "ui_test. H" 
#include 

The class vtkImageViewer2; 
The class vtkRenderer; 
//class QPushButton; 
The class QVTKWidget; 


The class test: public QMainWindow 
{
Q_OBJECT 

Public: 
The test (QWidget * parent=0); 
To test (); 

Private: 
Ui: : testClass Ui; 

Private slots: 
Void onOpenSlot (); 

Private: 
VtkSmartPointerVtkSmartPointer M_pRenderer; 
//QPushButton pushButton. 
QVTKWidget m_QVTKWidget; 
}; 
# endif//TEST_H 

Test. The CPP 
# include "test. H" 
#include 
#include 
#include 
#include 
#include 
#include 
#include 
#include 
#include 
#include 


The test: test (QWidget * parent) 
: QMainWindow (parent) 
{
UI. SetupUi (this); 

M_pImageViewer=vtkSmartPointerM_pRenderer=vtkSmartPointer : : New (); 

//set the renderer m_QVTKWidget 
M_QVTKWidget. GetRenderWindow () - & gt; AddRenderer (m_pRenderer); 

//connected to the open signal with the corresponding slot 
The connect (UI) pushButton, SIGNAL (triggered ()), and this, SLOT (onOpenSlot ())); 

} 

The test: : ~ test () 
{

} 

Void test: : onOpenSlot () 
{
QString filter; 
The filter="JPEG image file (*. * JPG. JPEG)"; 

QDir dir. 
QString fileName=QFileDialog: : getOpenFileName (this, QString (tr (" open image ")), dir. AbsolutePath (), the filter). 
If (fileName. IsEmpty ()==true) return; 

//support with Chinese path read 
QByteArray ba=fileName. ToLocal8Bit (); 
Const char * fileName_str=co data (); 

//vtkIPEGReader read JPG image 
VtkSmartPointer Reader=vtkSmartPointer : : New (); 
Reader - & gt; SetFileName (fileName_str); 

//to as m_pImageViewer input, the output of a reader and set the m_ImageViewer associated with the renderer m_pRenderer 
M_pImageViewer - & gt; SetInputData (reader - & gt; GetOutput ()); 
M_pImageViewer - & gt; UpdateDisplayExtent (); 
M_pImageViewer - & gt; SetRenderWindow (m_QVTKWidget GetRenderWindow ()); 
M_pImageViewer - & gt; SetRenderer (m_pRenderer); 
M_pImageViewer - & gt; SetupInteractor (m_QVTKWidget GetRenderWindow () - & gt; GetInteractor ()); 
M_pImageViewer - & gt; SetSliceOrientationToXY ();//default is the direction of 
M_pImageViewer - & gt; GetImageActor () - & gt; InterpolateOff (); 
M_pRenderer - & gt; ResetCamera (); 
M_pRenderer - & gt; DrawOn (); 
M_QVTKWidget. GetRenderWindow () - & gt; Render (); 
} 

The main. CPP 
# include "test. H" 
# include & lt; QtWidgets/QApplication> 

Int main (int arg c, char * argv []) 
{
QApplication a (arg c, argv); 
The test w; 
Baron how (); 
Return a.e xec (); 
} 

An error

 
Test. Obj: error LNK2019: cannot resolve the external symbol "__declspec (dllimport) public: virtual __thiscall QVTKWidget: : ~ QVTKWidget (void)" (__imp_?? 1 qvtkwidget @ @ UAE @ XZ), the symbol in the function of "public: virtual __thiscall test: : ~ test (void)" (?????? 1 test @ @ UAE @ XZ) referenced 
1> Test. Obj: error LNK2019: cannot resolve the external symbol "__declspec (dllimport) public: __thiscall QVTKWidget: : QVTKWidget (class QWidget *, class QFlags) "(__imp_?? 0 qvtkwidget @ @ QAE @ PAVQWidget @ @ V? $QFlags @ W4WindowType @ Qt @ @ @ @ @ Z), the symbol in the function of "public: __thiscall test: : test (class QWidget *)" (?????? 0 test @ @ QAE @ PAVQWidget @ @ @ Z) referenced 
1> Test. Obj: error LNK2001: cannot resolve the external symbol of "public: virtual struct QMetaObject const * __thiscall QVTKWidget: : metaObject (void) const" (? MetaObject @ QVTKWidget @ @ UBEPBUQMetaObject @ @ XZ) 
1> Test. Obj: error LNK2001: cannot resolve the external symbol of "public: virtual void * __thiscall QVTKWidget: : qt_metacast (char const *)" (? Qt_metacast @ QVTKWidget @ @ UAEPAXPBD @ Z) 
1> Test. Obj: error LNK2001: cannot resolve the external symbol of "public: virtual int __thiscall QVTKWidget: : qt_metacall (enum QMetaObject: : Call, int, void * *)" (? Qt_metacall @ QVTKWidget @ @ UAEHW4Call @ QMetaObject @ @ HPAPAX @ Z) 
1> Test. Obj: error LNK2001: cannot resolve the external symbol of "protected: virtual bool __thiscall QVTKWidget: : event (class QEvent *)" (? The event @ QVTKWidget @ @ MAE_NPAVQEvent @ @ @ Z) 
1> Test. Obj: error LNK2001: cannot resolve the external symbol of "protected: virtual void __thiscall QVTKWidget: : mousePressEvent (class QMouseEvent *)" (? MousePressEvent @ QVTKWidget @ @ MAEXPAVQMouseEvent @ @ @ Z) 
1> Test. Obj: error LNK2001: cannot resolve the external symbol of "protected: virtual void __thiscall QVTKWidget: : mouseReleaseEvent (class QMouseEvent *)" (? MouseReleaseEvent @ QVTKWidget @ @ MAEXPAVQMouseEvent @ @ @ Z) 
1> Test. Obj: error LNK2001: cannot resolve the external symbol of "protected: virtual void __thiscall QVTKWidget: : mouseMoveEvent (class QMouseEvent *)" (? MouseMoveEvent @ QVTKWidget @ @ MAEXPAVQMouseEvent @ @ @ Z) 
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