Application class wrote a piece of code in

 CAutoPositioningSystemDoc * pDoc=(CAutoPositioningSystemDoc *) (((CFrameWnd *) AfxGetApp () - & gt; M_pMainWnd) - & gt; GetActiveDocument ()); 

Compile links are not error, but run to there is an error,

CodePudding user response:

 POSITION pos=theApp. GetFirstDocTemplatePosition (); 
While (pos!=NULL) 
{
CDocTemplate * p=theApp GetNextDocTemplate (pos); 
The POSITION posdoc=p - & gt; GetFirstDocPosition (); 
While (posdoc!=NULL) 
{
CDocument * pDoc=p - & gt; GetNextDoc (posdoc); 
If (pDoc!=NULL) 
{
The POSITION posview=pDoc - & gt; GetFirstViewPosition (); 
If (posview!=NULL) 
{
The CView * pV=pDoc - & gt; GetNextView (posview); 
} 
} 
} 
} 

CodePudding user response:

Need to add every step of the pointer, the middle of the likely failed to get the object step by step