Wanted help about QPushButton SIGNAL....

[iQtCentre]

as a qt begginer , i created a simple pro , when i connected the QPushButton SIGNAL to a private slot defined by myself , but it does not work.
Is there any differences between the SIGNAL clicked() and clicked(bool) of QPushButton?

[Zlatomir]

Difference is this
Post the code, or we can give only suggestions on what might not work.