VTK+MFC:建立自定义控件显示

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这里我们用MFC框架来做VTK的界面
VTK比较蛋疼的是不能像图片一样直接在MFC的picture控件中显示,需要自己添加自定义控件来显示画出的模型,
1.首先新建一个类如MyCustomControl
这里写图片描述
Ctrl+W打开建立类向导界面,选择Add Class->new
名字填写如MyCustomControl
Base class选择generic CWnd
2.在MyCustomControl.cpp文件中添加如下代码:
注册代码:

BOOL MyCustomControl::RegisterWndClass(){    WNDCLASS windowclass;    HINSTANCE hInst = AfxGetInstanceHandle();    //Check weather the class is registerd already    if (!(::GetClassInfo(hInst, MYWNDCLASS, &windowclass)))    {        //If not then we have to register the new class        windowclass.style = CS_DBLCLKS;// | CS_HREDRAW | CS_VREDRAW;        windowclass.lpfnWndProc = ::DefWindowProc;        windowclass.cbClsExtra = windowclass.cbWndExtra = 0;        windowclass.hInstance = hInst;        windowclass.hIcon = NULL;        windowclass.hCursor = AfxGetApp()->LoadStandardCursor(IDC_ARROW);        windowclass.hbrBackground = ::GetSysColorBrush(COLOR_WINDOW);        windowclass.lpszMenuName = NULL;        windowclass.lpszClassName = MYWNDCLASS;        if (!AfxRegisterClass(&windowclass))        {            AfxThrowResourceException();            return FALSE;        }    }    return TRUE;}

在构造函数中添加:

RegisterWndClass();

添加响应函数:

void MyCustomControl::OnLButtonDown(UINT nFlags, CPoint point) {    // TODO: Add your message handler code here and/or call default    if(flag==FALSE)    {        oldpt=point;        flag=TRUE;    }    CWnd::OnLButtonDown(nFlags, point);}void MyCustomControl::OnLButtonUp(UINT nFlags, CPoint point) {    // TODO: Add your message handler code here and/or call default    flag=FALSE;    CWnd::OnLButtonUp(nFlags, point);}void MyCustomControl::OnMouseMove(UINT nFlags, CPoint point) {    // TODO: Add your message handler code here and/or call default    if(flag==TRUE)    {        CDC *d=GetDC();        d->MoveTo(oldpt);        d->LineTo(point);        oldpt=point;        ReleaseDC(d);    }    CWnd::OnMouseMove(nFlags, point);}

这几个分别是控制右键按下时vtk画出来的模型的放大缩小,左键按下时vtk模型的旋转,鼠标在自定义控件窗口的移动
再在BEGIN_MESSAGE_MAP(MyCustomControl, CWnd)添加
ON_WM_LBUTTONDOWN()
ON_WM_LBUTTONUP()
ON_WM_MOUSEMOVE()
2.右键点击添加自定义控件在种类中命名如MyDrawPad
这里写图片描述
3.在MyCustomControl.hpp文件中添加声明等
在文件开头添加:

#define MYWNDCLASS "MyDrawPad"

在public中添加:

MyCustomControl();BOOL SetBitmap(UINT nIDResource);

在protect中修改(添加一些消息相应):

    //{{AFX_MSG(MyCustomControl)    afx_msg void OnLButtonDown(UINT nFlags, CPoint point);    afx_msg void OnLButtonUp(UINT nFlags, CPoint point);    afx_msg void OnMouseMove(UINT nFlags, CPoint point);        // NOTE - the ClassWizard will add and remove member functions here.    //}}AFX_MSG

在private中添加:

private:    CDC cDC;    BOOL RegisterWndClass();    CPoint oldpt;    BOOL flag;

4.在Dlg.cpp中为自定义空键添加变量:
在::DoDataExchange(CDataExchange* pDX)中添加
DDX_Control(pDX,IDC_moxing,m_drawpad1);
5.在Dlh.h中添加头文件:
#include “MyCustomControl.h”
在protected中添加变量:
MyCustomControl m_drawpad1;
6.在vtk要显示的时候加上获取窗口的代码:

 vtkRenderer *ren = vtkRenderer::New();  ren->SetBackground(1.0, 1.0, 1.0);  vtkRenderWindow *renWindow = vtkRenderWindow::New();  renWindow->AddRenderer(ren);  //renWindow->SetSize( 200, 200 );  CRect rect;  GetClientRect(&rect);  m_drawpad1.GetClientRect(&rect);  renWindow->SetParentId(m_drawpad1.m_hWnd);  renWindow->SetSize(rect.Width(),rect.Height());

之后可以在mfc框架下显示vtk画出的图像
这里写图片描述
这里写图片描述
我用了十五年,帮那时候我最喜欢的女生追回了她的丈夫……

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