how to get the wxFrame pointer in the subdialog

how to get the wxFrame pointer in the subdialog

how to get the parent wxFrame pointer in subdialog
I make a program to realize some function. I have an wxFrame,
wxMenubar,wxScrolledWindow,wxListBox. By click some menu of the menubar, i
create several dlgs for information input, maybe have several levels(after
dlg create, also create sub dlgs) i want to manipulate the wxFrame's
wxScrolledWindow's display content in the dliaogue . My qustion is: how to
get the wxFrame pointer in the dlg. typically the dlg my create is like
this,
class Qgis2wxDbSourceSelectDlg : public wxDialog
Qgis2wxDbSourceSelectDlg( wxWindow* parent, wxWindowID id = wxID_ANY,
const wxString& title = wxT("Add PostGIS Table(s)"), const wxPoint& pos =
wxDefaultPosition, const wxSize& size = wxSize( 269,286 ), long style =
wxDEFAULT_DIALOG_STYLE );
I want to have the wxFrame pointer in the Qgis2wxDbSourceSelectDlg, how
should i do?
Should I make the Qgis2wxDbSourceSelectDlg also inheritated from wxFrame?
and how to transfer to wxFrame pointer to the Qgis2wxDbSourceSelectDlg?