Code::Blocks beginner issue with UI design

Question

I am new to C::B and wxWidgets. I've tried to create a simple screen like this:

But I get this when it's run:

I have changed a few properties like the following but I'm not sure if this was the right thing to do.

1. I placed a flex grid on the form. Made it for 1 column and 3 rows
2. Placed 3 BoxSizers. So they're one under the other. Set the expand property to true.
3. Placed StaticText and TextCtrl elements (one each) in the first 2 boxer sizers
4. Placed a spacer and Button in the 3rd box sizer
5. For the address text box, I set the multiline property to true (check box) 5.

But when run, it does not seem to grow. The button is missing at the bottom.

Any ideas on how to fix this please... Thanks!

Here's (part of) the default code that was generated for the form.

KBond::KBond(wxWindow* parent,wxWindowID id,const wxPoint& pos,const wxSize& size)
{
    //(*Initialize(KBond)
    wxBoxSizer* BoxSizer2;
    wxBoxSizer* BoxSizer1;
    wxFlexGridSizer* FlexGridSizer1;
    wxBoxSizer* BoxSizer3;

    Create(parent, wxID_ANY, wxEmptyString, wxDefaultPosition, wxDefaultSize, wxDEFAULT_DIALOG_STYLE|wxRESIZE_BORDER, _T("wxID_ANY"));
    SetClientSize(wxSize(520,300));
    FlexGridSizer1 = new wxFlexGridSizer(3, 1, 0, 0);
    BoxSizer1 = new wxBoxSizer(wxHORIZONTAL);
    StaticText1 = new wxStaticText(this, ID_STATICTEXT1, _("Enter your name"), wxDefaultPosition, wxSize(90,27), 0, _T("ID_STATICTEXT1"));
    BoxSizer1->Add(StaticText1, 1, wxALL|wxSHAPED|wxALIGN_LEFT|wxALIGN_CENTER_VERTICAL, 5);
    TextCtrl1 = new wxTextCtrl(this, ID_TEXTCTRL1, _("Text"), wxDefaultPosition, wxSize(148,27), 0, wxDefaultValidator, _T("ID_TEXTCTRL1"));
    BoxSizer1->Add(TextCtrl1, 2, wxALL|wxALIGN_CENTER_HORIZONTAL|wxALIGN_CENTER_VERTICAL, 5);
    FlexGridSizer1->Add(BoxSizer1, 1, wxALL|wxEXPAND|wxALIGN_CENTER_HORIZONTAL|wxALIGN_CENTER_VERTICAL, 5);
    BoxSizer2 = new wxBoxSizer(wxHORIZONTAL);
    StaticText2 = new wxStaticText(this, ID_STATICTEXT2, _("Address"), wxDefaultPosition, wxSize(122,22), 0, _T("ID_STATICTEXT2"));
    BoxSizer2->Add(StaticText2, 1, wxALL|wxALIGN_TOP|wxALIGN_CENTER_HORIZONTAL, 5);
    TextCtrl2 = new wxTextCtrl(this, ID_TEXTCTRL2, _("Text"), wxDefaultPosition, wxSize(113,98), wxTE_MULTILINE, wxDefaultValidator, _T("ID_TEXTCTRL2"));
    BoxSizer2->Add(TextCtrl2, 2, wxALL|wxALIGN_CENTER_HORIZONTAL|wxALIGN_CENTER_VERTICAL, 5);
    FlexGridSizer1->Add(BoxSizer2, 1, wxALL|wxEXPAND|wxALIGN_CENTER_HORIZONTAL|wxALIGN_CENTER_VERTICAL, 5);
    BoxSizer3 = new wxBoxSizer(wxHORIZONTAL);
    BoxSizer3->Add(0,0,2, wxALL|wxALIGN_CENTER_HORIZONTAL|wxALIGN_CENTER_VERTICAL, 5);
    Button1 = new wxButton(this, ID_BUTTON1, _("Label"), wxDefaultPosition, wxSize(62,29), 0, wxDefaultValidator, _T("ID_BUTTON1"));
    Button1->SetMaxSize(wxSize(0,0));
    BoxSizer3->Add(Button1, 1, wxALL|wxSHAPED|wxALIGN_RIGHT|wxALIGN_CENTER_VERTICAL, 5);
    FlexGridSizer1->Add(BoxSizer3, 1, wxALL|wxEXPAND|wxALIGN_CENTER_HORIZONTAL|wxALIGN_CENTER_VERTICAL, 5);
    SetSizer(FlexGridSizer1);
    FlexGridSizer1->SetSizeHints(this);

    Connect(wxID_ANY,wxEVT_INIT_DIALOG,(wxObjectEventFunction)&KBond::OnInit);
    //*)
}

Answer 1

This looks like it would give your trouble:

 Button1->SetMaxSize(wxSize(0,0));