wxWidgets ribbonBar taking up entire window - c++

Question

I've spent the past day figuring out how to get a wxRibbon bar. It took some work, but I finally got a ribbon bar working. Except that the ribbon bar takes up the entire window, except for a tiny space on the right side of my application.
The code I'm using to test in my main window is as follow:
Win_app::Win_app(const wxString& title)
: wxFrame(NULL, wxID_ANY, title, wxDefaultPosition, wxSize(640, 480))
{
wxRibbonBar* mainMenu = new wxRibbonBar(this,-1,wxDefaultPosition,wxSize(20,40));
wxRibbonPage* home = new wxRibbonPage(mainMenu, wxID_ANY, wxT("Home"));
wxRibbonPanel *test_panel1 = new wxRibbonPanel(home, wxID_ANY, wxT("Panel 1"),
wxNullBitmap, wxDefaultPosition, wxSize(320,60));
wxRibbonPanel *test_panel2 = new wxRibbonPanel(home, wxID_ANY, wxT("Panel 2"),
wxNullBitmap, wxDefaultPosition, wxSize(320,60));
wxRibbonPage* page = new wxRibbonPage(mainMenu, wxID_ANY, wxT("Another Page"));
wxRibbonPanel *test_panel3 = new wxRibbonPanel(page, wxID_ANY, wxT("Panel 3"),
wxNullBitmap, wxDefaultPosition, wxSize(640,60));
mainMenu->Realize();
Centre();
}
I'm using wxWidgets 2.9.4. Any help would be much appreciated! Thanks for reading.

Answer 1

I would suggest taking a look at the ribbon sample in your wxWidgets install located at wxdir\samples\ribbon. It looks to be doing roughly the same as your code with a key difference in that it adds the wxRibbonBar to a sizer:
wxSizer *s = new wxBoxSizer(wxVERTICAL);
s->Add(m_ribbon, 0, wxEXPAND);
s->Add(m_logwindow, 1, wxEXPAND);
s->Add(m_togglePanels, wxSizerFlags().Border());
SetSizer(s);
You need to do this because if there is a single control on a dialog it automatically fills the dialog, which in your case is unwanted behaviour.