delete isn't working for me!

This is a discussion on delete isn't working for me! within the Windows Programming forums, part of the Platform Specific Boards category; OK, So there I was writing my interesting program that uses lib's, if you haven't heard about it, read my ...

  1. #1
    Unregistered
    Guest

    Question delete isn't working for me!

    OK, So there I was writing my interesting program that uses lib's, if you haven't heard about it, read my other thread...
    ok, anyway, here's the story:

    I'm doing a class, which uses a constructor and a destructor as follows:

    class cMyWindow
    {
    private:
    .
    HWND hWnd;
    char* title;
    .
    blah blah
    .
    .
    .

    public:
    cMyWindow(HWND hwnd, const char Title);
    ~cMyWindow()
    .
    .
    blah blah
    .
    .
    };


    cMyWindow::cMyWindow(HWND hwnd, const char Title)
    {
    this->hWnd=hwnd;
    this->title=new(char[strlen(Title)+1]);
    strcpy(this->title,Title);
    }

    ~cMyWindow()
    {
    this->hWnd=0;
    delete this->hWnd; <------THE PROBLEM GOES HERE
    }

    the program compiles perfectly, but when It runs over the "delete", it exits with a horrible assertion error
    I don't know how to fix this!

    By the way, I'm using Visual C++ 6.0 Enterprise Edition(Don't tell me not to use it because it costed me a fortune)

    If anybody knows how to fix this problem, or at least knows why this is happening, tell me!

    Oskilian

  2. #2
    Registered User
    Join Date
    Sep 2001
    Posts
    412
    It's because a window handle is NOT a C++ object -- you can't use new or delete with it.

  3. #3
    Former Member
    Join Date
    Oct 2001
    Posts
    955
    Nonononono
    my mistake

    it was a typing mistake, the correct one must be

    delete this->title; <------THE PROBLEM GOES HERE

    sorry

    (the first message is mine, but I forgot to log in before writing it)

    Oskilian

  4. #4
    Registered User
    Join Date
    Sep 2001
    Posts
    412
    Hmm... did you try using delete[] in place of delete?

    I have used code much like this before, without having problems. I never use parentheses with new, but it should work the same either way.

    Also, you don't need to do things like "this->title" -- just saying "title" is the same.

  5. #5
    Former Member
    Join Date
    Oct 2001
    Posts
    955
    I'll try it
    i knew that the this->title isn't necessary, butt it makes my code easier to understand (anyway, when it compiles, it removes the this.

    But thank you, I'll try it

    Oskilian

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