@jsulm
I absolutely concur, hence my:

[private] cannot access outside, unless you change that or put in friend

The point being to answer OP's

So If i understand correctly without modifying the code to test there is no way to test the connection.

They will have to make some change, which doubtless they were attempting to avoid. Just a heads-up.

There are many ways to do this, one of is:

Notifier{ id : notifierId rectColor: "yellowgreen" target: receiverId visible: true onNotify: receiverId.receiveInfo(param) } Receiver { id : receiverId rectColor: "dodgerblue" anchors.right: parent.right visible: right }

@jsulm Sorry, it's my fault.
I write wrong parameters at lamda function :(;;;

@ples76 said in Can you create slots in main.cpp file?:

I have solved the problem with all of your help

Great, so please don't forget to mark your post as solved!

I am trying to find the easiest solution to this since I am under the gun to get this done asap

Although you find a solution now, you may want to take into account that having such a main() function is not a good idea as @Christian-Ehrlicher pointed out.
So time (and stakeholders) permitting, you might want to look at refactoring your code...

@jsulm Thanks a lot!
Sorry for my miss on the link.
I will try it.

@Kalado said in Connect() uses wrong emitter object.:

Look at some code:

//A.h class task2 : public QWidget { Q_OBJECT public: task2(QWidget *parent = 0); ~task2(); protected: void mousePressEvent(QMouseEvent *event) override; signals: void myWidgetClicked(); //A.cpp void A::mousePressEvent(QMouseEvent *event){ /// use the respective classname emit myWidgetClicked(); }

If ur using Classname as task2 , use

void task2::mousePressEvent(QMouseEvent *event){ emit myWidgetClicked(); }

Thanks,

@mrjj
no, a callback is just the nomenclature you use to describe functions passed as arguments to other functions to be invoked later.

I'm just realizing that what I was trying to do was maybe nonsense : I was trying to pass on to the mysql server a value for the client on which my Qt program is running i.e. I was trying to "deceive" the server. And I could understand then that there would be no such method in QSqlDatabase (and that you couldn't understand my question initially).

Could you confirm my reasoning please?

Thx so much @kshegunov , I had Q_OBJECT in abstract class, but I forgot to put it as well in derived class. This solve my problem :)

As a side note: I saw several times in the forums here that people are not declaring their overrides as virtual, this is syntactically correct, but I would suggest doing it (makes the code more readable) or even better is to use C++11's override specifier.

Thx for this tip so much, I like this kind of notes which helps me improve the code. Yeah you're ride it looks more readable right now :)

Parent

public slots: virtual void itemToAdd(AbstractFood* item)=0;

Child:

public slots: void itemToAdd(AbstractFood* item) override; void pizzaToCustomize(Pizza *pizza);

and we exactly know what was overriden from parent.
Many thx

Hi,

You have Qt's QtSql module documentation that provides this information and examples

mysql_options called with MYSQL_OPT_CONNECT_TIMEOUT returns 0 (success) both for mysql and mariadb libraries.

How are you setting up your model ?

You're welcome !

Since you have it working now please update the thread title prepending [solved] so other forum users may know a solution has been found :)

Also, consider up-voting answer(s) that helps you in any thread, they will make it more easy to find for other users :)