newbe question about signals / slots

[wysota]

I think your situation is completely different. You just want to access a method (emit a signal) from an object you don't have a pointer to. Just make the pointer available somewhere so that the callback can access it and that's it. You don't need any special external or additional objects or any other kind of special treatment.

[marcel]

Yes, juts call the slot from the interface in incomingCallFunc. No need to emit the signal. Make your main window available in incomingCallFunc and simply call the slot (which now doesn't necessarily needs to be a slot ).

Regards

[Walsi]

OMG

That really sounds very easy for me. But i think it isn't as easy for me to implement.

Okay, let me try:

I generate a pointer which points to my object usc_gui. This object is created in main.

main.cpp

#include <pjlib.h>
#include <pjlib-util.h>
#include <pjmedia.h>
#include <pjmedia-codec.h>
#include <pjsip.h>
#include <pjsip_simple.h>
#include <pjsip_ua.h>
#include <pjsua-lib/pjsua.h>
 
#include <QApplication>
 
#include "uscsippart.h"
#include "uscgui.h"
#include "uscinterface.h"
 
int main(int argc, char *argv[])
{
	init_sip();
 
	QApplication uscguiapp(argc, argv);	
	UscGuiES01 usc_gui;
	usc_gui.show();
 
	return uscguiapp.exec();
 
}

#include <pjlib.h>
#include <pjlib-util.h>
#include <pjmedia.h>
#include <pjmedia-codec.h>
#include <pjsip.h>
#include <pjsip_simple.h>
#include <pjsip_ua.h>
#include <pjsua-lib/pjsua.h>

#include <QApplication>

#include "uscsippart.h"
#include "uscgui.h"
#include "uscinterface.h"

int main(int argc, char *argv[])
{
	init_sip();

	QApplication uscguiapp(argc, argv);	
	UscGuiES01 usc_gui;
	usc_gui.show();
	
	return uscguiapp.exec();

}

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Via the parameters I give the callback function the pointer and in the function I can do anything with the object.

For example:

void incomingCallFunc(Usc_Gui_ES01 *to_usc_gui)
{
     *to_usc_gui.acceptButton->setEnabled(true);
     *to_usc_gui.hangupButton->setEnabled(true);
}

void incomingCallFunc(Usc_Gui_ES01 *to_usc_gui)
{
     *to_usc_gui.acceptButton->setEnabled(true);
     *to_usc_gui.hangupButton->setEnabled(true);
}

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But where I call this function, the pointer also must be known there?

incomingCallFunc(&to_usc_gui);

incomingCallFunc(&to_usc_gui);

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Where and how must I define and/or declarate the pointer that it works?

Best Regards,...

[wysota]

You should really learn a bit of C++... Your problem is strictly programming language related.

[Walsi]

Okay!!

Many thanks to you!!

I will learn C++!!!

[wysota]

Please read about scopes and declarations of external variables. This should allow you to solve the problem yourself.