QML, Python, Signals, and Slots

[Eric Mesa]

Yup!  I just figured out your first answer on my own.  Thanks again for all
your help!
--
Eric Mesa
http://about.me/ericmesa
http://www.ericsbinaryworld.com



On Sun, Jun 24, 2012 at 10:32 PM, Viranch Mehta <viranch.mehta at gmail.com>wrote:

> On Sun, Jun 24, 2012 at 8:26 PM, Eric Mesa <ericsbinaryworld at gmail.com>wrote:
>
>>
>> Just curious about one thing:
>> 1) With this framework I can get information from the python program to
>> affect the QML (and change the button to a blue colour).  How do I get
>> information to the python program?   In other words, if I have a python
>> function that's function(int) -> how do I provide the int argument for the
>> python FROM the QML?
>>
>
> you simply declare the signal as: updateRequired(int number); and connect
> it to the slot that
> accepts an integer.
>
>
>> It's a little hard for me to figure out because this stuff is all
>> indirect - in the QML the signal is referred to as if it were a function.
>> And the function gets the data from the signal, but it doesn't seem to make
>> sense how that happens because there's no real link to it.  I kinda
>> understand what I'm doing, but not enough to figure out how to get the into
>> to python.
>>
>
> the view.rootObject() is your qml's root item. when you declare a signal
> in qml, it gets created
> as a normal Qt signal, which you can then connect to any c++ (or in this
> case, python) slot.
> yes, the signal is a function (that optionally takes arguments), which
> calls all the slots that we
> connect to the signal (and the arguments are passed to them, if any).
>
> Viranch
>
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