How to send data from a static function of other Class to a MainWindow function?

[hakermania]

I have a class called Global and it does a repetitive task once in a while via a static function... This function is called through many different classes so it is important to be static so as not to create objects all the time.

glob.h:

class Global: public QObject
{
    Q_OBJECT
 
public:
    static void send_name(QString color_name);
...
 
Q_SIGNALS:
   send_color(QString color_name);
};

class Global: public QObject
{
    Q_OBJECT

public:
    static void send_name(QString color_name);
...

Q_SIGNALS:
   send_color(QString color_name);
};

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glob.cpp:

void Global::send_name(QString color_name){
        if(_window_loaded_){
            /*SEND MESSAGE WITH COLOR_NAME*/
            Q_EMIT send_color(color_name);
        }
}

void Global::send_name(QString color_name){
        if(_window_loaded_){
            /*SEND MESSAGE WITH COLOR_NAME*/
            Q_EMIT send_color(color_name);
        }
}

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Inside my MainWindow class I have to connect the send_color message sent by my static function to a local function so as to update some gui content.

I know that there are many many threads about this but, believe me, I've searched all of them and nothing worked for me. I searched in depth the mailing lists and still nothing. I even tried to use QCustomEvent with qApplication->postEvent() but it is deprecated and it is suggested to use QEvent , which doesn't have setdata() function though, so it is no usable for this case (?)

I've spent my morning searching about this, so all suggestions are appreciated!