I am curious why there is facility within QT Designer to create signals and slots as, to my surprise, I did not need to do this. All of the necessary coding was accomplished completely within the plugin, and without using QT Designer.
I installed QGIS 2.6.0, lately, and have successfully created a signal / slot in a test plugin (an effort beginning with PluginBuilder): getting a ListView widget to respond to a combobox change
Can someone explain to me a) what is the use of the slot/signal facility in QT Desginer, when using QGIS and python and b) how is that slot/signal facility in QT Designer used?
Maybe a pointer to a full web-explanation on this point would be helpful. The QT tutorials I've found, so far, don't help, or, at least, don't help in the context of a QGIS plugin.