Qt close a running window through code

问题

I have a program that opens another window and i want the old window to close. Is there some function or something that would close the window through the code but keep the other window running?

回答1:

this->close();

or

close();

Ref: http://doc.qt.digia.com/4.7/qwidget.html#close

回答2:

MyWidget *newform = new MyWidget;
newform->show();
this->hide();

回答3:

void Dialog::on_Close_clicked()  // Condition for Main thread program stopping

Running Thread->closethread = true;
    this->close();

void Dialog::on_Stop_clicked()  // Condition For Stop Button for your particular task
{
    this->close();
}

回答4:

Use signal and slot mechanism.

Whenever you want to close that window or screen emit a signal and connect this signal to the close slot of that window. This should work fine.

来源：https://stackoverflow.com/questions/11749262/qt-close-a-running-window-through-code