GUI - problems with Connect

ROOT
1

Hi

As usually people here I have a problem too.

I am building GUI for my program.
As it is proposed in tutorial I have made a class MyMainFrame, there I have an TGMainFrame object and all that stuff. And I have there an instance of my class ABC. Moreover I have in MyMainFrame button ‘plot’ and a line:

plot->Connect(“Clicked()”,“ABC”, this->SomeABC,“Details()”);

( I have first initialized SomeABC of course)

Details is a function in class ABC and it use some other functions and values from ABC. And after pushing ‘plot’ I have *** Break *** segmentation violation.

When I put instead of Details some other function which NOT USE any other functions or values from ABC then everything works properly.

How do you think, what is wrong?

2

Hi,

At first glance I would say there is a bug (e.g. uninitialized variable) in your ABC::Details() method, or in any other method called from there.
You should try to debug (put a breakpoint in) your ABC::Details() method to see what’s wrong and where it crashes.
And if you need more help, I’m scared you will have to give more details (e.g. a stack trace or even better: a working piece of code reproducing the problem…)

Cheers, Bertrand.

3

I have to say, that I have solved this problem, but in some complicated way…

I have written a function in class ABC which contains execution of function Details and it works!