SetSizeHints to a frame loaded by wxXmlResource - wxwidgets

Question

Right now I'm using wxWidgets msw 3.0.5 on Windows 7 and the xrc file was created with wxFormBuilder 3.10.1
Normally I use something like this to avoid my wxframe be resized smaller than my child controls:
MyFrame::MyFrame() : wxFrame( NULL, wxID_ANY, wxT("Sometitle") )
{
wxBoxSizer* frameSizer = new wxBoxSizer( wxVERTICAL );
wxPanel* panel = new wxPanel( this, wxID_ANY );
// ..
frameSizer->Add( panel, 1, wxEXPAND | wxALL, 0 );
SetSizerAndFit( frameSizer );
Centre();
}
But, when I'm use xrc file to load my frame I using like this:
MyFrame::MyFrame()
{
// used in App::OnInit()
// wxXmlResource::Get()->InitAllHandlers();
// wxXmlResource::Get()->Load( wxT("some.xrc" ) );
wxXmlResource::Get()->LoadFrame( this, NULL, wxT("MyFrame") );
// ...
Fit(); // this resize my frame to show my child controls as expected (like SetSizerAndFit does )
SetMinClientSize(GetSize()); // is this the right way?
Centre();
}
Fit() resize my frame same as SetSizerAndFit, but if don't use SetMinClientSize my frame can be horrible resize shriking and hiden my controls. So my questions are:
Is there a feature that I'm missing in wxFormBuilder to avoid resize less the frame child controls?
Using SetMinClientSize is the right way?
Is there are any other ways in xrc file to have the same effect like SetSizerAndFit?
Thanks.
Note: this happens also in my linux wxwidgets library

Answer 1

The names are unfortunately confusing, but SetSizerAndFit() calls SetSizer() and wxSizer::SetSizeHints(), and not wxWindow::Fit() as might be expected. So to have exactly the same behaviour as in the first case you need to call GetSizer()->SetSizeHints(this) in your frame code.
And, FWIW, wxSizer::SetSizeHints() does something sensibly equivalent to
wxSize size = GetBestClientSize();
SetMinClientSize(size);
SetClientSize(size);
i.e. it sets both the current and min sizes, which is what you presumably want.