c++ - How to set Focus on a specific widget -

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i'm trying implement gui various widgets opengl project. have main widget drawing scene. opengl widget associated key , mouse events, therefore focus should on it. i've noticed if click on push button, focus moved button means focus no longer associated opengl widget. clicking widget mouse not changing focus. 1 of solution turn off focus widgets except opengl widget in gui follows 

 ui->processbutton->setfocuspolicy(qt::nofocus);  ui->quitbutton->setfocuspolicy(qt::nofocus);  ui->clearbutton->setfocuspolicy(qt::nofocus);  ui->textedit->setfocuspolicy(qt::nofocus);  ui->groupbox->setfocuspolicy(qt::nofocus);

if have many widgets, solution annoying if add widgets later on. question is there solution set focus on specific widget?

your solution fine, shouldn't enumerating widgets manually:

// c++11 (auto widget : findchildren<qwidget*>())   if (! qobject_cast<qopenglwidget*>(widget)) widget->setfocuspolicy(qt::nofocus);  // c++98 foreach (qwidget * widget, findchildren<qwidget*>())   if (! qobject_cast<qopenglwidget*>(widget)) widget->setfocuspolicy(qt::nofocus);

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