Why does the slot function not respond when the Qt child widget sends Update signal?

[mirro]

#include <QPushButton>
 
test::test(QWidget *parent)
    : QWidget(parent)
{
    ui.setupUi(this);
    QPushButton* pButton = new QPushButton;
    pButton->setParent(this);
    //
    QObject::connect(pButton, SIGNAL(update),
        this,SLOT(onSubWidgetUpdade));
}
 
test::~test()
{
 
}
 
void test::onSubWidgetUpdade()
{
    int J = 0;
}

[mrjj]

@mirro
Hi
QPushButton do not have an update signal ??
It wont send a signal when it draws. (PaintEvent)

What do you try to do ?

[SGaist]

Hi,

Beside what @mrjj wrote, you will have a runtime warning about your connection call. Its content is wrong.