[Qt-interest] signals and slots....revisited...

[Andre Somers]

Op 14-3-2011 9:47, Arnold Krille schreef:
> Hi,
>
> On Sunday 13 March 2011 19:00:34 sarvesh saran wrote:
>> I have been a Qt programmer for quite some time now and i understand most
>> of the general features of Qt. I am still confused  about how signals and
>> slots work...
> It amazes me how someone can use Qt for longer time and not understand
> signals/slots. That is one of the first things to learn...
Actually, I don't think the level of understanding that Sarvesh 
demonstrates is that weird for a Qt user (perhaps not a Qt developer 
that actually works on Qt itself). You are perfectly capable of using 
signal/slots, and understanding how to use them, what their role in the 
Qt world is, without actually understanding how they work exactly behind 
the scenes. Why is that so amazing? I use technologies of which I don't 
know how the internals work on a daily basis. For instance, I have no 
clue how my compiler really works internally. I know the rough outlines, 
but not the greasy details. Yet I use it successfully every day. There 
are many other examples, even within Qt.

And now, Sarvesh demonstrates the will to learn more details, to dive 
into the greasy gears. He does so by first diving into the code itself. 
Only then, he asks a well formulated question, stating in a 
well-organized way what he understands from the mechanism, and so making 
it easy to reply and correct or add to certain points. I think that 
should be applauded, not being looked down at as you seem to do with 
this comment.

So from me: thank you for a good question, Sarvesh.

André