[Qt-interest] Runtime Error :- connect: No such slot (Update)

[wim.delvaux at adaptiveplanet.com]

Any chance you provide the wrong object to connect to ? 


W


On Saturday 20 February 2010 09:41:21 Wm. G. Urquhart wrote:
> Well this get weirder and weirder. In my code I have an existing slot
> declared as:
> 
> void typeChanged(int) ;
> 
> when I 're-wire' my connect(...) to this slot it works, however; if I
> change the code to use setLegendIndex(int) the connect(...) fails!
> 
> Object::connect: No such slot MyApp::setLegendIndex(int) in myapp.cpp:302
> Object::connect:  (receiver name: 'MyApp')
> 
> With setLegendIndex being declared thus:
> 
> void setLegendIndex(int msg) ;
> 
> and implemented using this:
> 
> void MyApp::setLegendIndex(int msg)
> {
> 
> 	::QMessageBox::information(this, "Set Legend", tr("Value is
> 
> %1").arg(msg)) ;
> }
> 
> It was suspected that setLegendIndex was getting 'optimised' out but as
> I use an if (...) to connect the signal I call the function when it fails:
> 
> pTest = new SignalTest() ;
> if (connect(pTest, SIGNAL(Boo(int)), this, SLOT(setLegendIndex(int)),
> Qt::ConnectionType::QueuedConnection))
> {
> 	pTest->Start() ;
> }
> else
> {
> 	setLegendIndex(5) ;
> }
> 
> If I could be any more confused I would be, does anyone have any
> suggestions here?
> 
> I know what I am trying to do works as my test application verifies
> this, but there must be something subtle that is 'poisoning' my real
> application.
>