Problem with slots



  • hi to every one
    i have a mainwindow class that inherited from qmainwindow
    and i have another class named class2 that inherited from qdialog;
    and in my mainwindow class i redefine my class2 with this code
    class2 en = new class2(this);
    on class2 i have a qpushbutton named button1;
    i wrote this code in my class2 constructor to use slot

    @
    connect(ui.button1,SIGNAL(clicked()),this,SLOT(this->adddatabase()));
    @

    and i add adddatabase() function to my private slots
    but when i click on button1 it does'nt run adddatabase() function
    what is my problem?

    [EDIT: code formatting, please wrap in @-tags, Volker]



  • remove "this->" from the SLOT():

    @
    connect(ui.button1, SIGNAL(clicked()), this, SLOT(adddatabase()));
    @



  • to late ;)

    <how can I delete posts?>



  • [quote author="mrtc3" date="1312892166"]to late ;)

    <how can I delete posts?>[/quote]

    I don't know if that's possible for non-moderators.

    Anyways, it does not hurt to have doubled answers. I consider it an advantage and a proof of an active community :-)



  • i remove this but it does'nt change anything and my aadddatabase() function does'nt run



  • [quote author="Volker" date="1312892535"]I consider it an advantage and a proof of an active community :-)[/quote]
    So answers are welcome, and I can train my Qt skills ;)

    kitten: adddatabase() must be declared as a slot in your header file.

    @
    private slots:
    void adddatabase();
    @
    and if its derived from QDialog the Q_OBJECT macro should be set.



  • when i add Q_Object macro on my project it get me this eror:
    1>------ Build started: Project: finger, Configuration: Debug Win32 ------
    1>Moc'ing enroll.h...
    1>moc: Too many input files specified
    1>Usage: moc [options] <header-file>
    1> -o<file> write output to file rather than stdout
    1> -I<dir> add dir to the include path for header files
    1> -E preprocess only; do not generate meta object code
    1> -D<macro>[=<def>] define macro, with optional definition
    1> -U<macro> undefine macro
    1> -i do not generate an #include statement
    1> -p<path> path prefix for included file
    1> -f[<file>] force #include, optional file name
    1> -nw do not display warnings
    1> @<file> read additional options from file
    1> -v display version of moc
    1>Project : error PRJ0019: A tool returned an error code from "Moc'ing enroll.h..."
    1>Build log was saved at "file://c:\Users\sazgar\Documents\Visual Studio 2008\Projects\finger\finger\Debug\BuildLog.htm"
    1>finger - 1 error(s), 0 warning(s)
    ========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========



  • I guess "this":http://developer.qt.nokia.com/forums/viewthread/1951I is wide spread: moc it manually again "moc.exe enroll.h -o moc_enroll.cxx" and add that *.cxx to your project (Add --> Existing Item..). This worked when I had this problem.


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