Deleting object after list removal (C++ visual studio)

This is a discussion on Deleting object after list removal (C++ visual studio) within the Windows Programming forums, part of the Platform Specific Boards category; Hello, so, I have a list of objects taht i made (they're calle Cgate objects) they're in a list. I ...

  1. #1
    Registered User
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    Sep 2003
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    55

    Deleting object after list removal (C++ visual studio)

    Hello,

    so, I have a list of objects taht i made (they're calle Cgate objects)

    they're in a list. I made a routine that will search through the list and find what it wants to delete..

    so what i have so far is.. i can search through the list, and remove the object from the list..

    but i'm trying to delete the actual object..when i throw in some code to delete the object, the list search and removal code doens't work anymore.. here's the code.. what do you guys think?


    PHP Code:
    case REMOVE:
                

                while (
    pos != NULL)
                {
                    
    CGatepGate gateList.GetNext(pos);

                    if(
    pGate->GateID == WhichGate)
                    {
                        
                        
    pGate gateList.GetPrev(pos);
                        
    gateList.RemoveAt(pos);
                        
    //delete pGate;
                        
    CurrentOperation NOTHING// to get out of "delete mode"

                    
    break; // when found and deleted stop going through list
                    
    }

                    else if(
    pos == gateList.GetTailPosition())
                    {
                        
                        
    pGate gateList.GetNext(pos);
                        
    pGate gateList.RemoveTail();
                        break;
                    }

                }

                break; 
    see where i have the // delete Cgate

    i thought i could delete the object like that, but it seems to screw my list up.

    it seems to screw with the location the object was in..

  2. #2
    VA National Guard The Brain's Avatar
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    looks like you do a good job of identifying the node to be deleted.. and you can successfully delete the node.. and you can identify the previous node.. but does the previous node ever get linked to the 'next' node after a deletion is made....?
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  3. #3
    Registered User
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    i read that the removeAt() function takes care of that for you..

    from what i read.. the following happens

    if you have a list

    say
    PHP Code:
    {12,32,43,54}

    and 
    you do removeAT(1this would make a new list with just
    {12,43,54
    it say's it takes care of it for you.. i guess it doesn't? because like i said.. as the code stands above.. it works.. but when i uncomment that delete pGate; line.. then it acts screwy

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