function 'connect' always look super class for slots.

[jpn]

But when I add that macro, there are some link errors. What library should I add?

That's why I suggested re-running qmake. The required moc steps are missing. For signals and slots, an auto-generated piece of code must be compiled and linked. Adding the Q_OBJECT macro and re-running qmake takes care of this.

But, I see you are using Visual Studio. Do you have a commercial license and the Visual Studio integration? I think the commercial integration should take care of detecting an added Q_OBJECT macro automatically, but if you are using an open source version and the community patches, you might need to regenerate the Visual Studio project file or something.

[Intaek Lim]

Thank for your reply, but I don't know to qmake in WinXP environ. with VS2005.

[vermarajeev]

Thank for your reply, but I don't know to qmake in WinXP environ. with VS2005.

Create a seperate *.h and *.cpp file. Put your declarations in *.h and definations in *.cpp. Use Q_OBJECT macro defore defining your constructor in *.h file and before public specifier. Hit the "moc" button provided with vs-integration(which you can see at top after you have installed qt properly).

This should solve the problem.

[macbeth]

I'm not really sure, if I know what the problem exactly is, but some suggestions:

You should put Q_OBJECT macro inside your class and re-run qmake, but one other question crossed my mind: Did you put your function in 'public/private slots' section of the class?

[Antony]

if your MyWindow has more than one parent make sure that QMainWindow listed first:

class MyWindow: public QMainWindow,public AnyOtherParents

otherwise moc will parse it incorrectly.