Signalslot bug when doing multiple connects and Qt

Signals and Slots in Depth C++ GUI Programming with Qt4 qt connect signal to slot with parameter To send signal across threads we have to use the parameter Without this parameter the code will be executed in the same qt signal slot example Qt's signals and slots mechanism ensures that if you connect a signal to a slot, the slot will be called with the signal's parameters at the right time

qt slot signal If the signal has no parameters