[Xfc-dev] Signal-handling-question

[Johannes Zellner]

Oh sorry for bad description, but this isn't my problem.
I simply can't connect any signals descripted in the widget class
(like for example  signal_key_release_event()) with my  Gtk::Entry .

Probably I missunderstood the API, but I can't find the right way.

If I connnect signals descripted in the Gtk::Entry class I have no 
problem with this code:
[...]
entry->signal_activate().connect(sigc::mem_fun(this, &FileStepper::go));
[...]
void FileStepper::go();
....

So, is it not possible to add widget-events to a Gtk::Entry ?

Bye
    Johannes


Jeff Franks schrieb:

>Johannes Zellner wrote:
>
>  
>
>>Hi
>>
>>I started to write a small application with the foundation-classes, now 
>>I've a question:
>>How can I connect the key_release_signal to a Entry-Widget ?
>>
>>I tried it like:
>>
>>entry->signal_key_release_event().connect(sigc::mem_fun(this, 
>>&FileStepper::gofor));
>>
>>.....
>>
>>
>>bool gofor(Gdk::EventCrossing& event)
>>{
>>....
>>}
>>
>>But I get many confusin errors by compiling.
>>
>>Would be nice if someone could just post a example :-)
>>
>> 
>>
>>    
>>
>Johannes,
>
>I don't know if this is your problem but the example code above is 
>wrong. FileStepper::gofor() is declared as a class member function but 
>it's defined as a global function. You shouldn't use global functions in 
>C++ if you can avoid it, but if you did, the above code should look like 
>this:
>
>entry->signal_key_release_event().connect(sigc::ptr_fun(&gofor));
>
>bool gofor(Gdk::EventCrossing& event)
>{
>....
>}
>
>and  for a member function the code should look like this:
>
>entry->signal_key_release_event().connect(sigc::mem_fun(this, 
>&FileStepper::gofor));
>
>bool FileStepper::gofor(Gdk::EventCrossing& event)
>{
>....
>}
>
>I presume "this" is a FileStepper instance. If not, "this" should point 
>to the class the gofor() function is declared in.
>
>Jeff.
>
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>