Recover the numbers in the widget number of the GuiBuilder

My problem is the following:
Which are the codes that I must write to recover the numbers (100, -4, 4) which are in the widget number entries in order to use them like number of bin and boundary of my histogram? (see the attachement)

The frame was created starting from GuiBuilder of Root and the generated code is in attachement.

thank you in advance for your answer
obj.doc (51.5 KB)

You can do something like this:

Double_t val1 = fNumberEntry1022->->GetNumber(); Double_t val2 = fNumberEntry1080->GetNumber(); Double_t val3 = fNumberEntry1094->GetNumber();
You can also look at $ROOTSYS/tutorials, there are some examples…