hi
The following is an extract from the book Foundations of Qt Development
by Johan Thelin. This explains how signal is implemented in Qt. Thanks
Mr.Johan Thelin.
Signals and slots are implemented by Qt using function pointers. When
calling emit with the signal as argument, you actually call
On Sunday 19 September 2010 17:41:59 Von wrote:
Hi,Algis,
I have looked through this chapter Events, the Clipboard, and Drag and
Drop, and I couldn't find anything about signal/slot mechanism.
Best Regards
Ch 10 does not talk about Signals-Slots directly, but it tells the details
about the
On Sunday 19 September 2010 17:41:59 Von wrote:
Hi,Algis,
I have looked through this chapter Events, the Clipboard, and Drag and
Drop, and I couldn't find anything about signal/slot mechanism.
Just another note: in the book on p.129 older style syntax signal/slot
representation is stated and
On Sunday 19 September 2010 17:41:59 Von wrote:
Hi,Algis,
I have looked through this chapter Events, the Clipboard, and Drag and
Drop, and I couldn't find anything about signal/slot mechanism.
http://www.riverbankcomputing.co.uk/static/Docs/PyQt4/pyqt4ref.html#new-style-
On 19.09.10 18:18:15, Algis Kabaila wrote:
On Sunday 19 September 2010 17:41:59 Von wrote:
Hi,Algis,
I have looked through this chapter Events, the Clipboard, and Drag and
Drop, and I couldn't find anything about signal/slot mechanism.
Best Regards
Ch 10 does not talk about
Hi,Algis,many thanks for all these informations.
At first I thought QtCore.QtObject.connect as static method of
QtObject,later I realized that,this is py style of calling super method.
That's why I asked question (3).
The document of pyqt says The code (or component) that emits the signal
does not
On 19.09.10 20:58:56, Algis Kabaila wrote:
On Sunday 19 September 2010 19:54:54 Andreas Pakulat wrote:
Ch 10 does not talk about Signals-Slots directly, but it tells the
details about the lower level events. It is the same and one mechanism
as Signals- Slots, it is just that it is
On Monday 20 September 2010 04:03:44 Andreas Pakulat wrote:
That's true, but what happens if the slot does not handle the signal?
This cannot happen. A signal-slot connection is a direct (or indirect)
function call. So if you emit a signal _all_ connected slots will be
executed, always
Many thanks,Andreas.
On Mon, Sep 20, 2010 at 2:09 AM, Andreas Pakulat ap...@gmx.de wrote:
On 19.09.10 18:15:15, Von wrote:
Hi,Algis,many thanks for all these informations.
At first I thought QtCore.QtObject.connect as static method of
QtObject,later I realized that,this is py style of
Hi,
There are three Objects related to one signal to slot event.
1, the signal generator
2,the slot trigger
3,qtObject who connect these two together.
I am wondering how things happening behind the scene.
Where does the signal first fire and how it passed to the slot?
What's the responsibility
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