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Thread: Class member reference

  1. #1
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    Default Class member reference

    Thanks to the folks who have already helped me along with this, but I am still having a little trouble referencing class members.

    Here's the relevant part of the header:
    Qt Code:
    1. class QTableView;
    2.  
    3. private:
    4. QTableView *view;
    To copy to clipboard, switch view to plain text mode 

    And part of the cpp:

    Qt Code:
    1. model = new QSqlTableModel();
    2. view = new QTableView();
    3.  
    4. model->setTable("log");
    5. model->select();
    6.  
    7. QTableView *view = new QTableView;
    8. view->setModel(model);
    9. view->setMinimumSize(1200,100);
    10. view->move(35,80);
    11. view->setSortingEnabled(TRUE);
    12. QHeaderView *header = view->horizontalHeader();
    13. header->setMovable(TRUE);
    14. view->show();
    To copy to clipboard, switch view to plain text mode 

    All of that works fine. Problem comes when I try to use model-> or view->
    in a local function. No errors, but no results. Like trying to set the view title or apply a filter to the model. Both of these work fine if the code for them is right after the code shown above, but when in a local function like this, they have no effect.

    Qt Code:
    1. checkPrefs();
    2.  
    3. void MainWindow::checkPrefs() {
    4. view->setWindowTitle("My Log");
    5. MainWindow::model->setFilter("call = 'k0zav'");
    6. }
    To copy to clipboard, switch view to plain text mode 

    And if I check the model assigned to the view in the checkPrefs code, it comes back empty.

    So, what am I doing wrong here?

  2. #2
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    Default Re: Class member reference

    You have local variables that shadow the ones declared in the class.
    Your biological and technological distinctiveness will be added to our own. Resistance is futile.

    Please ask Qt related questions on the forum and not using private messages or visitor messages.


  3. The following user says thank you to wysota for this useful post:

    waynew (20th December 2009)

  4. #3
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    Default

    Thanks for the reply. I understand what you are saying, conceptually, but not sure where. Do you mean lines 1 and 2 of the first lines in cpp?
    Without those, it crashes when checkPrefs is called.
    So I'm confused.

    Ok Wysota - I got it now.
    Just removed the *model and *view lines and it is working perfectly.
    Thanks for your help!
    Last edited by wysota; 20th December 2009 at 09:03.

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