怎么在一个类中取得文档类的指针？？？？拜托了

Question

怎么从一个类中（它的基类是CWnd）取得文档类中的指针啊？？？？各位好心的拜托了

Answer 1

CMDIChildWnd* pChild;
pChild=(CMDIChildWnd*)(m_pMainFrm->GetActiveFrame()); CMme_plusView* pView = reinterpret_cast<CMme_plusView*>(pChild->GetActiveView());
CMme_plusDoc* pDoc = reinterpret_cast<CMme_plusDoc*>(pChild->GetActiveView()->GetDocument());

Answer 2

换成CRSDoc* pDoc=(CRSDoc*)((CFrameWnd*)AfxGetApp()->m_pMainWnd)->GetActiveDocument();倒是编译成功了 但是跟踪pDoc指针的到是0x00000000, CFrameWnd::GetActiveDocument returned 0x00000000 {CDocument} 返回的不是CRSDoc的文档指针啊 晕……还有什么方法么？？？？

Answer 3

还有我用这个方法CRSDoc* pDoc=((CMainFrame *)AfxGetMainWnd())->GetActiveDocument();试了 出现这个D:\vc++\MyProjects1\复件 RS\复件 RS\RSView.cpp(435) : error C2440: 'initializing' : cannot convert from 'class CDocument *' to 'class CRSDoc *'错误 应该怎么改啊……？？

Answer 4

CRSDoc* pDoc=(CRSDoc*)((CMainFrame *)AfxGetMainWnd()->GetActiveFrame())->GetActiveDocument();

Answer 5

楼主的是多文档的项目?
CRSDoc* pDoc=(CRSDoc*)((CMainFrame *)AfxGetMainWnd()->GetActiveFrame())->GetActiveDocument();

Answer 6

有错误啊 error C2039: 'GetActiveFrame' : is not a member of 'CWnd'

Answer 7

GetActiveFrame()->GetActiveDocument();

Answer 8

注意你写的类有没有重载GetDocument（）这个函数啊。
没有的话，那么估计都是会出错的了
还有你的基类是CVIEW的吗？
还是直接继承CWND这个也有关系了

Answer 9

class CRSView : public CWnd
{
// Construction
public:
CRSView();
private:
// Attributes
public:
bool bol;

   // Operations
public:// Overrides
// ClassWizard generated virtual function overrides
//{{AFX_VIRTUAL(CRSView)
protected:
virtual BOOL PreCreateWindow(CREATESTRUCT& cs);
//}}AFX_VIRTUAL// Implementation
protected:
HICON m_hIcon;
CRectTracker* m_tracker;public:
//void Zoom(float fXZoomRatio, float fYZoomRatio);
void ReadBinary(int i,int j,CString strFileName);
void ReadBinary(int i,int j,float **z);
void DrawImage(int x,int y,float z);
virtual ~CRSView(); // Generated message map functions
protected:
//{{AFX_MSG(CRSView)
afx_msg void OnPaint();
afx_msg void OnZoomOut();
afx_msg void OnZoomIn();
afx_msg void OnPan();
afx_msg void OnEagle();
afx_msg void OnSingle();
afx_msg void OnMultiple(); //}}AFX_MSG
DECLARE_MESSAGE_MAP()
};
然后我想在CRSView类一个函数里取得文档类的指针，就是：// TODO: Add your message handler code here and/or call default
      //CRSDoc *pDoc=GetDocument();
      //int mouseX=point.x;
  //int mouseY=point.y;
          //自己定义doc类的指针在view获取      pDoc=new CRSDoc;       //pDoc=(CRSDoc*)((CMainFrame*)AfxGetApp()->m_pMainWnd)->GetActiveDocument();
     //CRSDoc* pDoc=(CRSDoc*)((CMainFrame *)AfxGetMainWnd()->GetActiveFrame())->GetActiveDocument();
       //CRSDoc *pDoc;
         if(pDoc!=NULL)
 { int nWidth=pDoc->m_tracker.m_rect.Width();
   int nHeight=pDoc->m_tracker.m_rect.Height();
                 
  //CRSDoc* pDoc=(CRSDoc*)((CMainFrame*)AfxGetApp()->m_pMainWnd)->GetActiveDocument();
          //CRSDoc* pDoc=(CRSDoc*)((CFrameWnd*)AfxGetMainWnd());      //CRSDoc* pDoc=((CMainFrame *)AfxGetMainWnd())->GetActiveDocument();
          //CRect rect(0,0,jy,ix);
          //CRect rectSave(0,0,jy,ix);
  CRect rectSave;
          //获取图形区域矩形对象的大小   
          pDoc->m_tracker.GetTrueRect(rectSave); 
   
          //如果没有点中图形,这时候HitTest将返回-1.这时候产生橡皮条.   
          if(pDoc->m_tracker.HitTest(point)<0)
          {   
                  CRectTracker tracker;   
                  //画橡皮擦   
                  if(tracker.TrackRubberBand(this,point,pDoc->m_bAllowInvert))

                  {   
                          //   下面的工作将用来检查橡皮条的矩形是否与图形区域的矩形相交.   
                          CRect rectT;   
                          //对橡皮条的矩形进行校正.   
                          tracker.m_rect.NormalizeRect();   //   so   intersect   rect   works   
                          //橡皮条区域与图形区域的交叉区域不为空,则将图形区域的调整句柄进行相应   
                        //的设置   
                          if(rectT.IntersectRect(tracker.m_rect,pDoc->m_tracker.m_rect))
  
                          {   
                                  //如果调整句柄位于矩形内部(resizeInside)则将调整句柄设置在矩形的外   
  //部(resizeOutside)   
                                  if(pDoc->m_tracker.m_nStyle&CRectTracker::resizeInside)
    
                                  {   
                                            //去除resizeInside   形式   
                                          pDoc->m_tracker.m_nStyle&=~CRectTracker::resizeInside;
 
                                            //设置resizeOutside形式   
                                          pDoc->m_tracker.m_nStyle|=CRectTracker::resizeOutside;
  
                                  }   
                                  //否则如果调整句柄在外部就将调整句柄放在区域内部   
                                  else   
                                  {   
                                          //   just   use   inside   resize   handles   on   first   time   
                                          pDoc->m_tracker.m_nStyle&=~CRectTracker::resizeOutside;
 
                                          pDoc->m_tracker.m_nStyle|=CRectTracker::resizeInside;
  
                                  }   
                                  //更新所有视图,显示调整后的图形   
                                  pDoc->UpdateAllViews(NULL,(LPARAM)(LPCRECT)rectSave);
                                  pDoc->UpdateAllViews(NULL);

                          }   
                  }   
          }   
          //如果选中了图形区域,则调用Track函数自动处理,同时处理后更新视图即可.   
          else if(pDoc->m_tracker.Track(this,point,pDoc->m_bAllowInvert))
          {   
                  //   normal   tracking   action,   when   tracker   is   "hit"   
                  pDoc->UpdateAllViews(NULL,(LPARAM)(LPCRECT)rectSave);
                  pDoc->UpdateAllViews(NULL);
  
          } 
 }
CWnd ::OnLButtonDown(nFlags, point);
}   就是这样的意思啊 我准确的是想取到CRSDoc文档类的指针  各位大虾好心帮帮忙啦 小弟实在有点急呀……
                 
 

Answer 10

void CRSView::OnLButtonDown(UINT nFlags, CPoint point) 

Answer 11

CTestApp* pApp = ((CTestApp*)(AfxGetApp()));
POSITION   pos= pApp->GetFirstDocTemplatePosition();   
CDocTemplate*   pDT = pApp->GetNextDocTemplate(pos);
pos=pDT->GetFirstDocPosition();   
CTestDoc *pDoc=(CTestDoc*)pDT->GetNextDoc(pos); 
CTestDoc *m_pDoc;
while (pDoc) 
{
if(pDoc->IsKindOf(RUNTIME_CLASS(CTestDoc))) 
{
m_pDoc = (CTestDoc *)pDoc;
break;
}
pDoc=(CTestDoc*)pDT->GetNextDoc(pos);
}

Answer 12

CTestApp* pApp = ((CTestApp*)(AfxGetApp())); 
POSITION  pos= pApp->GetFirstDocTemplatePosition();  
CDocTemplate*  pDT = pApp->GetNextDocTemplate(pos); 
pos=pDT->GetFirstDocPosition();  
CTestDoc *pDoc=(CTestDoc*)pDT->GetNextDoc(pos); 
CTestDoc *m_pDoc; 
while (pDoc) 
{ 
if(pDoc->IsKindOf(RUNTIME_CLASS(CTestDoc))) 
{ 
m_pDoc = (CTestDoc *)pDoc; 
break; 
} 
pDoc=(CTestDoc*)pDT->GetNextDoc(pos); 
}

Answer 13

CTestApp* pApp = ((CTestApp*)(AfxGetApp())); 
POSITION  pos= pApp->GetFirstDocTemplatePosition();  
CDocTemplate*  pDT = pApp->GetNextDocTemplate(pos); 
pos=pDT->GetFirstDocPosition();  
CTestDoc *pDoc=(CTestDoc*)pDT->GetNextDoc(pos); 
CTestDoc *m_pDoc; 
while (pDoc) 
{ 
if(pDoc->IsKindOf(RUNTIME_CLASS(CTestDoc))) 
{ 
m_pDoc = (CTestDoc *)pDoc; 
break; 
} 
pDoc=(CTestDoc*)pDT->GetNextDoc(pos); 
}

Answer 14

CRuntimeClass* pClass = RUNTIME_CLASS( CObject );

Answer 15

如果是单文档，while循环应该可以不要的。pDoc直接就可以得到指针。
因为是单文档，GetActiveDocument是没用的。

Answer 16

CDocTemplate*  pDT = pApp->GetNextDocTemplate(pos); 这句有错误啊 跟踪的……高手再留步……