python - Solved: Qt 4.8.4: Cannot connect slot to QListView::currentChanged() signal -

python - Solved: Qt 4.8.4: Cannot connect slot to QListView::currentChanged() signal -

when connecting slot qlistview::currentchanged(current, previous) signal using auto connection get:

qmetaobject::connectslotsbyname: no matching signal on_modelosview_currentchanged(qmodelindex,qmodelindex)

not using auto connection get:

attributeerror: 'builtin_function_or_method' object has no attribute 'connect'

i'm using pyside , code follows:

class modelos(qtgui.qdialog): def __init__(self, parent): qtgui.qdialog.__init__(self, parent) self.ui = ui_dialog() self.ui.setupui(self) # inicializa o modelo self.model = modelosmodel(self) self.ui.modelosview.setmodel(self.model) # inicializa o mapper self.mapper = qtgui.qdatawidgetmapper(self) self.mapper.setmodel(self.model) self.mapper.addmapping(self.ui.modelosedit, 0) self.mapper.tofirst() self.ui.modelosview.currentchanged.connect(self.onmodelosview_currentchanged) @qtcore.slot(qtcore.qmodelindex, qtcore.qmodelindex) def onmodelosview_currentchanged(self, current, previous): self.mapper.setcurrentindex(current.row())

where: modelosmodel subclass of qtabstractlistmodel , modelosview qlistview widget.

my goal utilize signal update mapper index user can select item wants in qlistview , edit in qplaintextedit using mapper.

edit: clear confusion code originated first error:

class modelos(qtgui.qdialog): def __init__(self, parent): qtgui.qdialog.__init__(self, parent) self.ui = ui_dialog() self.ui.setupui(self) # inicializa o modelo self.model = modelosmodel(self) self.ui.modelosview.setmodel(self.model) # inicializa o mapper self.mapper = qtgui.qdatawidgetmapper(self) self.mapper.setmodel(self.model) self.mapper.addmapping(self.ui.modelosedit, 0) self.mapper.tofirst() @qtcore.slot(qtcore.qmodelindex, qtcore.qmodelindex) def on_modelosview_currentchanged(self, current, previous): self.mapper.setcurrentindex(current.row())

i using auto connect feature got error:

qmetaobject::connectslotsbyname: no matching signal on_modelosview_currentchanged(qmodelindex,qmodelindex)

edit 2 (solution):

ok, checking docs 10th time , realized qlistview::currentchanged(...) slot , not signal. created custom subclass of qlistview signal needed , made currentchanged emit signal instead.

thanks help!

it's not coming connect() statement, setupui().

by default, setupui() adds phone call qmetaobject::connectsignalsbyname(widget), widget argument passed setupui() (in case: self).

that call, in turn, slots of self name resembling

on_childobjectname_signalname

and seek figure out if self has kid object named childobjectname (in sense of qobject::objectname(); if so, it seek connect signalname slot. don't that.

long story short: don't name slots using on_child_signal pattern unless plan utilize connectsignalsbyname.

(on other hand, it's quite convenient widgets created using designer: since designer give kid widgets name, can hook signals using feature, create slot called on_child_signal , magically work.)

python qt signals pyside qlistview