Hi Lidia,
sorry for the late reply ...
Am Dienstag, 28. Februar 2006 19:11 schrieb LIDIAa ARISTA SANCHEZ:
> Can you help me?
I hope I can :)
> I don't understand signal and slot, someday I prove QT and I understand
> but if I puth in me class someone slot, it said :
>
> no matching function for call to `slot(<unknown type>)'
> candidates are: ufo::USlot0 ufo::slot(void (*)())
>
> Why?, me instruction is:
> combo->sigActivated().connect(slot(DrawMesh::&activar));
If you connect to a member method of a class, you have to provide 2 things:
a) A reference to an object of that class
b) A pointer to a member method
Try something like this:
combo->sigActivated().connect(slot(*combo, &DrawMesh::activar));
As a side note:
I want to achieve what is called delegates in other languages. Main point is
to provide an object oriented way of plain C call backs (function pointers).
If you want more info on this topic, search for C++ and delegates or member
function pointer etc.
But you don't need that info if you just want to use it :)
> I don't understand very well how I use the next clases UEvent,
> UObjectSlotNode, USlotBase, USlotEven,
> but you said a Dr. Luis M. de la Cruz S.
>
> If you are using Class methods, you need an object slot (in
> uobjectslot.hpp).
>
> but I don't understand this class.
You should use any of the slot class yourself. All the work should be done by
the overloaded function: slot.
Hope that helps.
If it is still unclear, don't hesitate to ask.
Regards,
Johannes
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