Debugging Qt's signal-slot connections

Hi all, I have a TCanvas in a QT application which I update by a QT timer event When the user closes the TCanvas window, I get a segfault

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 signal and slot Learn how to call QML function from C++ using connect function

qt signal slot Qt, this is accomplished through the use of SIGNAL and SLOT functions Connecting the Robot to the GUI Recall that ROS communication is performed by