how to infrom a different class of a change in variable..

[salmanmanekia]

hi..
this problem is more related to c++ then qt but it also requires previous info about qt so i cannot consult to any pure c++ forums and c++ forum on qtcentre seems to be quite inactive so i thought of banging my question here..
anyways the problem is here..atlast
in the below class scenario i inform the 'superClass' with the value of 'record_click' from 'child1',the superClass then informs 'child2's record_click of this new value...but as you can see that i am using update() function in child2 in which i do record_click-- and i wanted this change to be made to superClass and child1's record_click...i mean that record_click of these two classes should also reduce themself by one
pls see the class 'child1' first ...then the 'super' class

//in superClass
 
connect(myChild1,SIGNAL(recordClicked(int)),this,SLOT(requestRecord(int)));
 
void superClass::requestRecord(int rec_clicks)
{
record_clicks = rec_clicks;
//emit requestedRecord();   //this is useless in this case because i wanted to also emit a signal to other widget to listen to
}
 
void superClass::recognitionAccept() //this method is succesfully called from another class and now i want to pass the recordclick value to the child..
{
..
myChild2->showAcceptedProgress(record_clicks);
..
}

//in superClass

connect(myChild1,SIGNAL(recordClicked(int)),this,SLOT(requestRecord(int)));

void superClass::requestRecord(int rec_clicks)
{
record_clicks = rec_clicks;
//emit requestedRecord();   //this is useless in this case because i wanted to also emit a signal to other widget to listen to
}

void superClass::recognitionAccept() //this method is succesfully called from another class and now i want to pass the recordclick value to the child..
{
..
myChild2->showAcceptedProgress(record_clicks);
..
}

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// in my child1 class
..
connect(recordButton,SIGNAL(clicked()),this,SLOT(reactToRecord()));
..
void child1::reactToRecord()
{
record_clicks++;
disableRecordButton();
emit recordClicked(record_clicks);
}

// in my child1 class
..
connect(recordButton,SIGNAL(clicked()),this,SLOT(reactToRecord()));
..
void child1::reactToRecord()
{
record_clicks++;
disableRecordButton();
emit recordClicked(record_clicks);
}

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//in child2 class
 
void child2::showAcceptedProgress(int rec_clicks)
{
record_clicks = rec_clicks;
..  
update();
}

//in child2 class

void child2::showAcceptedProgress(int rec_clicks)
{
record_clicks = rec_clicks;
..  
update();
}

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[jacek]

and i wanted this change to be made to superClass and child1's record_click...i mean that record_click of these two classes should also reduce themself by one

Does this mean that both super class and child class have their own record_click member variables?

[salmanmanekia]

Does this mean that both super class and child class have their own record_click member variables?

ya,i think it should because i have to reduce it as i said by one which mean i have to access it,one idea can be declaring it as public maybe ,but i think i just dont want to exposs unneccesary code to other classes...,
i have also tried some derefrencing but this also doesnt seem to work...

[jacek]

ya,i think it should because i have to reduce it as i said by one which mean i have to access it,one idea can be declaring it as public maybe ,but i think i just dont want to exposs unneccesary code to other classes...,
i have also tried some derefrencing but this also doesnt seem to work...

I don't quite follow you.

Anyway if you need to use some member variable in subclasses, either make it protected or give your subclasses some protected interface.