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Progress Bar

Posted on 2003-12-03
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Last Modified: 2013-11-20
I need to add a Progress Bar in a List Control Box.
i.e In Report View as an element in a specific column
Can anyone suggest me the procedure to do the same
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Question by:VS_Learner
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4 Comments
 
LVL 48

Expert Comment

by:AlexFM
ID: 9865487
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LVL 23

Expert Comment

by:Roshan Davis
ID: 9865504
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Author Comment

by:VS_Learner
ID: 9866508
I have a Class inheriting CPropertyPage ...
and I have designed a list control in that dialog
I have a problem in integrating the code given in above examples with my LIST CONTROL DIALOG ..
i.e how and where to define those classes and variables
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LVL 3

Accepted Solution

by:
komar earned 80 total points
ID: 9866992
You may create the progress control dynamically (when needed), user it and then destroy it when you are done with it.

The code below is just a simple way to just that:

NOTE: You may need to copy the code below and paste it into notepad (or the VC editor) to be able to see long lines!

1. Add a method called "CProgressCtrl *CreateProgressCtrlInListCtrlItem(CListCtrl &ctrlList, int nItem, int nSubItem)" to you CPropertyPage derived class. The code for this method is shown below:

CProgressCtrl *CDerivedPropPage::CreateProgressCtrlInListCtrlItem(CListCtrl &ctrlList, int nItem, int nSubItem)
{
      ASSERT(IsWindow(ctrlList.GetSafeHwnd()));
      if(!IsWindow(ctrlList.GetSafeHwnd()))
            return NULL;

      //Get rectangle for the specified sub-item
      CRect rectSubItem;
      ctrlList.GetSubItemRect(nItem, nSubItem, LVIR_BOUNDS, rectSubItem);

      //Special case handling if nSubItem is 0
      //(GetSubItemRect() returns the whole list width if nSubItem equals 0)
      if(nSubItem == 0)
      {
            rectSubItem.right = rectSubItem.left + ctrlList.GetColumnWidth(nSubItem);
      }

      CProgressCtrl *pCtrl = new CProgressCtrl;
      if(pCtrl)
      {
            BOOL bCreated = pCtrl->Create(WS_CHILD | WS_VISIBLE | PBS_SMOOTH,
                                                 rectSubItem,
                                       &ctrlList,
                                       (UINT)-1);

            if(bCreated)
            {
                  pCtrl->ShowWindow(SW_SHOW);
                  pCtrl->UpdateWindow();
            }
      }

      return pCtrl;
}

2. To use this method, you can do something like this:
      ...
      ...
      CProgressCtrl *pCtrl = CreateProgressCtrlInListCtrlItem(m_list, 0, 0);

      if(pCtrl->GetSafeHwnd()) //Make sure creation of progress succeed
      {
            int nMin = 0;
            int nMax = 100;
            int nStep = 5;

            pCtrl->SetRange32(nMin, nMax);
            pCtrl->SetPos(nMin);
            pCtrl->SetStep(nStep);
            
            while(nMax > pCtrl->GetPos())
            {
                  pCtrl->StepIt();
                  Sleep(100); //Delay 100 milli seconds
            }

            pCtrl->DestroyWindow();
            delete pCtrl;
            pCtrl = NULL;
      }
      ...
      ...

Thanks,
Khalid Omar.
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