On Mon, Jun 30, 2014 at 2:36 AM, André Hartmann <andre.hartm...@iseg-hv.de> wrote:
> Hello all, > > I'd like to have a QComboBox with the available serial ports on my > system. Populating the box at program start is easy, but I'd like to > detect USB serial ports that are connected during run time. > > The only think I found is focusInEvent, but it seems my port list is > updated twice, on opening the list and on closing it (Windows 7, Qt > 4.8.2). Is there a better way to do? > > I'd really like to have something like QComboBox::onOpened(). > Borland C++ Builder had OnDropDown which for that purpose. > > Check out the virtual method QComboBox::showPopup(). http://qt-project.org/doc/qt-4.8/qcombobox.html#showPopup Adam
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