?
Solved

views and docs

Posted on 2001-06-06
3
Medium Priority
?
221 Views
Last Modified: 2013-11-20
i have 2 problems:
1. i need to prevent from documents to be created in some conditions, how to do it?
2. i need to draw on the a 2nd view in a coordinates of the corsor which is in the first view, and only there, how to loop for the view? (which is not this pointer)

thanks
0
Comment
Question by:web37
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
3 Comments
 
LVL 12

Expert Comment

by:migel
ID: 6159034
Hi!
UpdateAllViews with proper hint will help you to part2.
for part1
IMHO you have to derive class DocTemplate and override virtual CDocument* CreateNewDocument(); method
0
 
LVL 42

Accepted Solution

by:
sedgwick earned 160 total points
ID: 6159062
for Q1:

in OnNewDocument of your Doc class add a condition before the creation:
m_bAllowCreateDocs is a data member in the app or main frame which is false in the cinstructor and true when u allow creating of docs

BOOL CMyDoc::OnNewDocument()
{
if(m_bAllowCreateDocs)
     if (CDocument::OnNewDocument())
               return TRUE;

     return TRUE;
}

for Q2 is a bit longer:
1. add this member to your CApp class ->      CMultiDocTemplate* m_ptrDocTemplate;
and initialize it in the InitInstance():
     CMultiDocTemplate* pDocTemplate;
     pDocTemplate = new CMultiDocTemplate(
          IDR_DBLCURTYPE,
          RUNTIME_CLASS(CMyDoc),
          RUNTIME_CLASS(CChildFrame), // custom MDI child frame
          RUNTIME_CLASS(CMyView));
     AddDocTemplate(pDocTemplate);
     m_ptrDocTemplate = pDocTemplate; //saving pointer to the doc template


2.add a function to the app called GetNumOfOpenWindows():
UINT CDblCursorApp::GetNumOfOpenWindows()
{
     UINT uNumOfOpenWindows = 0;
     POSITION pos = m_ptrDocTemplate->GetFirstDocPosition();
     CDblCursorDoc* pDoc;
     CDblCursorView* pView;

     while ( pos != NULL ) {
          pDoc = (CMyDoc*)(m_ptrDocTemplate->GetNextDoc(pos));
          ASSERT(pDoc);
          POSITION posView = pDoc->GetFirstViewPosition();

          while( posView != NULL ) {
               pView = (CMyView*)pDoc->GetNextView(posView);
               ASSERT(pView);

               uNumOfOpenWindows++;
          }
     }

     return uNumOfOpenWindows;
}

3.override OnMouseMove of your CVIew:
void CDblCursorView::OnMouseMove(UINT nFlags, CPoint point)
{
     if(((CDblCursorApp*)AfxGetApp())->GetNumOfOpenWindows())     {
          CMultiDocTemplate* pDT = ((CMyApp*)AfxGetApp())->GetDocTemplate();
          POSITION pos = pDT->GetFirstDocPosition();
          CMyDoc* pDoc;
          CMyView* pView;

          while ( pos != NULL ) {
               pDoc = (CMyDoc*)(pDT->GetNextDoc(pos));
               POSITION posView = pDoc->GetFirstViewPosition();

               while(posView != NULL) {
                    pView = (CMyView*)pDoc->GetNextView(posView);
                    if(pView == this)
                         continue;//skip special drawing on your view !!!

                    pView->DoSpecialDraw(point);
               }
          }
     }
     CView::OnMouseMove(nFlags, point);
}

4.add a special drawing function to your view:
void CMyView::MoveCursorPos(CPoint point)
{
//here add your special drawing code with the point from the 1st view
}

good luck


0
 
LVL 42

Expert Comment

by:sedgwick
ID: 6159196
instead of void CMyView::MoveCursorPos(CPoint point)
it should be void CMyView::DoSpecialDraw(CPoint point)

cheers mate
0

Featured Post

Get MongoDB database support online, now!

At Percona’s web store you can order your MongoDB database support needs in minutes. No hassles, no fuss, just pick and click. Pay online with a credit card. Handle your MongoDB database support now!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Introduction: Load and Save to file, Document-View interaction inside the SDI. Continuing from the second article about sudoku.   Open the project in visual studio. From the class view select CSudokuDoc and double click to open the header …
Exception Handling is in the core of any application that is able to dignify its name. In this article, I'll guide you through the process of writing a DRY (Don't Repeat Yourself) Exception Handling mechanism, using Aspect Oriented Programming.
This video will show you how to get GIT to work in Eclipse.   It will walk you through how to install the EGit plugin in eclipse and how to checkout an existing repository.
In this brief tutorial Pawel from AdRem Software explains how you can quickly find out which services are running on your network, or what are the IP addresses of servers responsible for each service. Software used is freeware NetCrunch Tools (https…
Suggested Courses
Course of the Month11 days, 14 hours left to enroll

752 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question