A qwidget passed to a function does nothing....

[tonnot]

This is a piece of code for my 'QTUTIL' class
.h

....
public 
   void time_start_crono(QWidget *indicador);
    void time_update();
private: 
     QWidget *time_widget_indicator;
....

....
public 
   void time_start_crono(QWidget *indicador);
    void time_update();
private: 
     QWidget *time_widget_indicator;
....

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.cpp

void W_qtutil::time_start_crono(QWidget *indicador) {
    time_widget_indicator=indicador; 
....}
void W_qtutil::time_update() {
 ((QLabel) W_qtutil::time_widget_indicator).setText("hello");

void W_qtutil::time_start_crono(QWidget *indicador) {
    time_widget_indicator=indicador; 
....}
void W_qtutil::time_update() {
 ((QLabel) W_qtutil::time_widget_indicator).setText("hello");

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}

I have at my mainwindow.cpp :

W_qtutil *w_qt=new W_qtutil();
  w_qt->time_start_crono(ui->label_tiempo);
  .... 
   w_qt->time_update();

W_qtutil *w_qt=new W_qtutil();
  w_qt->time_start_crono(ui->label_tiempo);
  .... 
   w_qt->time_update();

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I create the w_qt using forward style (to avoid circular dependencies)
But My label are not updated ....
Any idea ? Thanks.

[mcosta]

Some questions:

1) time_update is not a slot;

2) To cast QObject use QObject::qobject_cast.

3 ) If you are sure that time_widget_indicator is a QLabel, why you don't declare it as QLabel?