X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/6463b9f5399b8670a0c74f2f8666bc2c9f37a406..11bfe4bfdc79b0374a0f287dac80efa262b365a7:/src/msw/combobox.cpp diff --git a/src/msw/combobox.cpp b/src/msw/combobox.cpp index f71cb41a3f..520e547064 100644 --- a/src/msw/combobox.cpp +++ b/src/msw/combobox.cpp @@ -37,6 +37,7 @@ #include "wx/textctrl.h" #endif +#include "wx/app.h" #include "wx/combobox.h" #include "wx/brush.h" #include "wx/clipbrd.h" @@ -65,7 +66,7 @@ wxBEGIN_FLAGS( wxComboBoxStyle ) wxFLAGS_MEMBER(wxBORDER_RAISED) wxFLAGS_MEMBER(wxBORDER_STATIC) wxFLAGS_MEMBER(wxBORDER_NONE) - + // old style border flags wxFLAGS_MEMBER(wxSIMPLE_BORDER) wxFLAGS_MEMBER(wxSUNKEN_BORDER) @@ -94,25 +95,46 @@ wxEND_FLAGS( wxComboBoxStyle ) IMPLEMENT_DYNAMIC_CLASS_XTI(wxComboBox, wxControl,"wx/combobox.h") wxBEGIN_PROPERTIES_TABLE(wxComboBox) - wxEVENT_PROPERTY( Select , wxEVT_COMMAND_COMBOBOX_SELECTED , wxCommandEvent ) + wxEVENT_PROPERTY( Select , wxEVT_COMMAND_COMBOBOX_SELECTED , wxCommandEvent ) wxEVENT_PROPERTY( TextEnter , wxEVT_COMMAND_TEXT_ENTER , wxCommandEvent ) // TODO DELEGATES - wxPROPERTY( Font , wxFont , SetFont , GetFont , , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) + wxPROPERTY( Font , wxFont , SetFont , GetFont , EMPTY_MACROVALUE , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) wxPROPERTY_COLLECTION( Choices , wxArrayString , wxString , AppendString , GetStrings , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) - wxPROPERTY( Value ,wxString, SetValue, GetValue, , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) - wxPROPERTY( Selection ,int, SetSelection, GetSelection, , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) - wxPROPERTY_FLAGS( WindowStyle , wxComboBoxStyle , long , SetWindowStyleFlag , GetWindowStyleFlag , , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) // style + wxPROPERTY( Value ,wxString, SetValue, GetValue, EMPTY_MACROVALUE , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) + wxPROPERTY( Selection ,int, SetSelection, GetSelection, EMPTY_MACROVALUE , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) + wxPROPERTY_FLAGS( WindowStyle , wxComboBoxStyle , long , SetWindowStyleFlag , GetWindowStyleFlag , EMPTY_MACROVALUE , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) // style wxEND_PROPERTIES_TABLE() wxBEGIN_HANDLERS_TABLE(wxComboBox) wxEND_HANDLERS_TABLE() wxCONSTRUCTOR_5( wxComboBox , wxWindow* , Parent , wxWindowID , Id , wxString , Value , wxPoint , Position , wxSize , Size ) + #else + IMPLEMENT_DYNAMIC_CLASS(wxComboBox, wxControl) + #endif +BEGIN_EVENT_TABLE(wxComboBox, wxControl) + EVT_MENU(wxID_CUT, wxComboBox::OnCut) + EVT_MENU(wxID_COPY, wxComboBox::OnCopy) + EVT_MENU(wxID_PASTE, wxComboBox::OnPaste) + EVT_MENU(wxID_UNDO, wxComboBox::OnUndo) + EVT_MENU(wxID_REDO, wxComboBox::OnRedo) + EVT_MENU(wxID_CLEAR, wxComboBox::OnDelete) + EVT_MENU(wxID_SELECTALL, wxComboBox::OnSelectAll) + + EVT_UPDATE_UI(wxID_CUT, wxComboBox::OnUpdateCut) + EVT_UPDATE_UI(wxID_COPY, wxComboBox::OnUpdateCopy) + EVT_UPDATE_UI(wxID_PASTE, wxComboBox::OnUpdatePaste) + EVT_UPDATE_UI(wxID_UNDO, wxComboBox::OnUpdateUndo) + EVT_UPDATE_UI(wxID_REDO, wxComboBox::OnUpdateRedo) + EVT_UPDATE_UI(wxID_CLEAR, wxComboBox::OnUpdateDelete) + EVT_UPDATE_UI(wxID_SELECTALL, wxComboBox::OnUpdateSelectAll) +END_EVENT_TABLE() + // ---------------------------------------------------------------------------- // function prototypes // ---------------------------------------------------------------------------- @@ -127,7 +149,7 @@ LRESULT APIENTRY _EXPORT wxComboEditWndProc(HWND hWnd, // --------------------------------------------------------------------------- // the pointer to standard radio button wnd proc -static WXFARPROC gs_wndprocEdit = (WXFARPROC)NULL; +static WNDPROC gs_wndprocEdit = (WNDPROC)NULL; // ============================================================================ // implementation @@ -152,6 +174,9 @@ LRESULT APIENTRY _EXPORT wxComboEditWndProc(HWND hWnd, case WM_KEYUP: case WM_KEYDOWN: case WM_CHAR: + case WM_SYSCHAR: + case WM_SYSKEYDOWN: + case WM_SYSKEYUP: case WM_SETFOCUS: case WM_KILLFOCUS: { @@ -213,29 +238,51 @@ LRESULT APIENTRY _EXPORT wxComboEditWndProc(HWND hWnd, return ::CallWindowProc(CASTWNDPROC gs_wndprocEdit, hWnd, message, wParam, lParam); } -WXHBRUSH wxComboBox::OnCtlColor(WXHDC pDC, WXHWND WXUNUSED(pWnd), WXUINT WXUNUSED(nCtlColor), - WXUINT WXUNUSED(message), - WXWPARAM WXUNUSED(wParam), - WXLPARAM WXUNUSED(lParam) - ) +// ---------------------------------------------------------------------------- +// wxComboBox callbacks +// ---------------------------------------------------------------------------- + +WXLRESULT wxComboBox::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam) { - HDC hdc = (HDC)pDC; - wxColour colBack = GetBackgroundColour(); + // TODO: handle WM_CTLCOLOR messages from our EDIT control to be able to + // set its colour correctly (to be the same as our own one) + + switch ( nMsg ) + { + case CB_SETCURSEL: + // Selection was set with SetSelection. Update the value too. + if ((int)wParam > GetCount()) + m_value.clear(); + else + m_value = GetString(wParam); + m_selectionOld = -1; + break; - if (!IsEnabled()) - colBack = wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE); + case WM_SIZE: + // wxStaticBox can generate this message, when modifying the control's style. + // This causes the content of the combobox to be selected, for some reason. + case WM_STYLECHANGED: + { + // combobox selection sometimes spontaneously changes when its + // size changes, restore it to the old value if necessary + long fromOld, toOld; + GetSelection(&fromOld, &toOld); + WXLRESULT result = wxChoice::MSWWindowProc(nMsg, wParam, lParam); - ::SetBkColor(hdc, wxColourToRGB(colBack)); - ::SetTextColor(hdc, wxColourToRGB(GetForegroundColour())); + long fromNew, toNew; + GetSelection(&fromNew, &toNew); - wxBrush *brush = wxTheBrushList->FindOrCreateBrush(colBack, wxSOLID); + if ( fromOld != fromNew || toOld != toNew ) + { + SetSelection(fromOld, toOld); + } - return (WXHBRUSH)brush->GetResourceHandle(); -} + return result; + } + } -// ---------------------------------------------------------------------------- -// wxComboBox -// ---------------------------------------------------------------------------- + return wxChoice::MSWWindowProc(nMsg, wParam, lParam); +} bool wxComboBox::MSWProcessEditMsg(WXUINT msg, WXWPARAM wParam, WXLPARAM lParam) { @@ -250,14 +297,24 @@ bool wxComboBox::MSWProcessEditMsg(WXUINT msg, WXWPARAM wParam, WXLPARAM lParam) InitCommandEvent(event); event.SetString(GetValue()); event.SetInt(GetSelection()); - ProcessCommand(event); + if ( ProcessCommand(event) ) + { + // don't let the event through to the native control + // because it doesn't need it and may generate an annoying + // beep if it gets it + return true; + } } + // fall through - return HandleChar(wParam, lParam, TRUE /* isASCII */); + case WM_SYSCHAR: + return HandleChar(wParam, lParam, true /* isASCII */); + case WM_SYSKEYDOWN: case WM_KEYDOWN: return HandleKeyDown(wParam, lParam); + case WM_SYSKEYUP: case WM_KEYUP: return HandleKeyUp(wParam, lParam); @@ -268,7 +325,7 @@ bool wxComboBox::MSWProcessEditMsg(WXUINT msg, WXWPARAM wParam, WXLPARAM lParam) return HandleKillFocus((WXHWND)wParam); } - return FALSE; + return false; } bool wxComboBox::MSWCommand(WXUINT param, WXWORD WXUNUSED(id)) @@ -277,20 +334,34 @@ bool wxComboBox::MSWCommand(WXUINT param, WXWORD WXUNUSED(id)) int sel = -1; switch ( param ) { + case CBN_SELENDOK: case CBN_SELCHANGE: sel = GetSelection(); - if ( sel > -1 ) + + // we may sometimes get 2 CBN_SELCHANGE events or a CBN_SELENDOK + // before CBN_SELCHANGE with the same index when the user selects + // an item in the combobox -- ignore duplicates + if ( sel > -1 && sel != m_selectionOld ) { - value = GetString(sel); + m_selectionOld = sel; + + // GetValue() would still return the old value from here but + // according to the docs we should return the new value if the + // user calls it in his event handler, so update internal + // m_value + m_value = GetString(sel); wxCommandEvent event(wxEVT_COMMAND_COMBOBOX_SELECTED, GetId()); event.SetInt(sel); event.SetEventObject(this); - event.SetString(value); + event.SetString(m_value); ProcessCommand(event); } - else + else // no valid selection { + m_selectionOld = sel; + + // hence no EVT_TEXT neither break; } @@ -307,25 +378,22 @@ bool wxComboBox::MSWCommand(WXUINT param, WXWORD WXUNUSED(id)) // want the new one) if ( sel == -1 ) { - value = GetValue(); + m_value = wxGetWindowText(GetHwnd()); + m_selectionOld = -1; } else // we're synthesizing text updated event from sel change { - // We need to retrieve the current selection because the user - // may have changed it in the previous handler (for CBN_SELCHANGE - // above). + // We need to retrieve the current selection because the + // user may have changed it in the previous handler (for + // CBN_SELCHANGE above). sel = GetSelection(); if ( sel > -1 ) { - value = GetString(sel); + m_value = GetString(sel); } - // we need to do this because the user code expects - // wxComboBox::GetValue() to return the new value from - // "text updated" handler but it hadn't been updated yet - SetValue(value); } - event.SetString(value); + event.SetString(m_value); event.SetEventObject(this); ProcessCommand(event); } @@ -333,8 +401,8 @@ bool wxComboBox::MSWCommand(WXUINT param, WXWORD WXUNUSED(id)) } // there is no return value for the CBN_ notifications, so always return - // FALSE from here to pass the message to DefWindowProc() - return FALSE; + // false from here to pass the message to DefWindowProc() + return false; } WXHWND wxComboBox::GetEditHWND() const @@ -355,6 +423,10 @@ WXHWND wxComboBox::GetEditHWND() const return (WXHWND)hwndEdit; } +// ---------------------------------------------------------------------------- +// wxComboBox creation +// ---------------------------------------------------------------------------- + bool wxComboBox::Create(wxWindow *parent, wxWindowID id, const wxString& value, const wxPoint& pos, @@ -367,15 +439,63 @@ bool wxComboBox::Create(wxWindow *parent, wxWindowID id, // pretend that wxComboBox is hidden while it is positioned and resized and // show it only right before leaving this method because otherwise there is // some noticeable flicker while the control rearranges itself - m_isShown = FALSE; + m_isShown = false; + + if ( !CreateAndInit(parent, id, pos, size, n, choices, style, + validator, name) ) + return false; - // first create wxWin object - if ( !CreateControl(parent, id, pos, size, style, validator, name) ) - return FALSE; + // we shouldn't call SetValue() for an empty string because this would + // (correctly) result in an assert with a read only combobox and is useless + // for the other ones anyhow + if ( !value.empty() ) + SetValue(value); + + // a (not read only) combobox is, in fact, 2 controls: the combobox itself + // and an edit control inside it and if we want to catch events from this + // edit control, we must subclass it as well + if ( !(style & wxCB_READONLY) ) + { + gs_wndprocEdit = wxSetWindowProc((HWND)GetEditHWND(), + wxComboEditWndProc); + } + + // and finally, show the control + Show(true); + + return true; +} + +bool wxComboBox::Create(wxWindow *parent, wxWindowID id, + const wxString& value, + const wxPoint& pos, + const wxSize& size, + const wxArrayString& choices, + long style, + const wxValidator& validator, + const wxString& name) +{ + wxCArrayString chs(choices); + return Create(parent, id, value, pos, size, chs.GetCount(), + chs.GetStrings(), style, validator, name); +} + +WXDWORD wxComboBox::MSWGetStyle(long style, WXDWORD *exstyle) const +{ + // we never have an external border + WXDWORD msStyle = wxChoice::MSWGetStyle + ( + (style & ~wxBORDER_MASK) | wxBORDER_NONE, exstyle + ); + + // usually WS_TABSTOP is added by wxControl::MSWGetStyle() but as we're + // created hidden (see Create() above), it is not done for us but we still + // want to have this style + msStyle |= WS_TABSTOP; + + // remove the style always added by wxChoice + msStyle &= ~CBS_DROPDOWNLIST; - // get the right style - long msStyle = WS_TABSTOP | WS_VSCROLL | WS_HSCROLL | - CBS_AUTOHSCROLL | CBS_NOINTEGRALHEIGHT /* | WS_CLIPSIBLINGS */; if ( style & wxCB_READONLY ) msStyle |= CBS_DROPDOWNLIST; #ifndef __WXWINCE__ @@ -385,76 +505,131 @@ bool wxComboBox::Create(wxWindow *parent, wxWindowID id, else msStyle |= CBS_DROPDOWN; - if ( style & wxCB_SORT ) - msStyle |= CBS_SORT; + // there is no reason to not always use CBS_AUTOHSCROLL, so do use it + msStyle |= CBS_AUTOHSCROLL; - if ( style & wxCLIP_SIBLINGS ) - msStyle |= WS_CLIPSIBLINGS; + // NB: we used to also add CBS_NOINTEGRALHEIGHT here but why? + return msStyle; +} - // and now create the MSW control - if ( !MSWCreateControl(_T("COMBOBOX"), msStyle) ) - return FALSE; +// ---------------------------------------------------------------------------- +// wxComboBox text control-like methods +// ---------------------------------------------------------------------------- - // A choice/combobox normally has a white background (or other, depending - // on global settings) rather than inheriting the parent's background colour. - SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW)); +void wxComboBox::SetValue(const wxString& value) +{ + if ( HasFlag(wxCB_READONLY) ) + SetStringSelection(value); + else + SetWindowText(GetHwnd(), value.c_str()); - for ( int i = 0; i < n; i++ ) - { - Append(choices[i]); - } + m_value = value; + m_selectionOld = GetSelection(); +} + +// Clipboard operations +void wxComboBox::Copy() +{ + SendMessage(GetHwnd(), WM_COPY, 0, 0L); +} - if ( !value.IsEmpty() ) +void wxComboBox::Cut() +{ + SendMessage(GetHwnd(), WM_CUT, 0, 0L); +} + +void wxComboBox::Paste() +{ + SendMessage(GetHwnd(), WM_PASTE, 0, 0L); +} + +void wxComboBox::Undo() +{ + if (CanUndo()) { - SetValue(value); + HWND hEditWnd = (HWND) GetEditHWND() ; + if ( hEditWnd ) + ::SendMessage(hEditWnd, EM_UNDO, 0, 0); } +} - // do this after appending the values to the combobox so that autosizing - // works correctly - SetSize(pos.x, pos.y, size.x, size.y); - - // a (not read only) combobox is, in fact, 2 controls: the combobox itself - // and an edit control inside it and if we want to catch events from this - // edit control, we must subclass it as well - if ( !(style & wxCB_READONLY) ) +void wxComboBox::Redo() +{ + if (CanUndo()) { - gs_wndprocEdit = (WXFARPROC)::SetWindowLong - ( - (HWND)GetEditHWND(), - GWL_WNDPROC, - (LPARAM)wxComboEditWndProc - ); + // Same as Undo, since Undo undoes the undo, i.e. a redo. + HWND hEditWnd = (HWND) GetEditHWND() ; + if ( hEditWnd ) + ::SendMessage(hEditWnd, EM_UNDO, 0, 0); } +} - // and finally, show the control - Show(TRUE); +void wxComboBox::SelectAll() +{ + SetSelection(0, GetLastPosition()); +} - return TRUE; +bool wxComboBox::CanUndo() const +{ + if (!IsEditable()) + return false; + + HWND hEditWnd = (HWND) GetEditHWND() ; + if ( hEditWnd ) + return ::SendMessage(hEditWnd, EM_CANUNDO, 0, 0) != 0; + else + return false; } -void wxComboBox::SetValue(const wxString& value) +bool wxComboBox::CanRedo() const { - if ( HasFlag(wxCB_READONLY) ) - SetStringSelection(value); + if (!IsEditable()) + return false; + + HWND hEditWnd = (HWND) GetEditHWND() ; + if ( hEditWnd ) + return ::SendMessage(hEditWnd, EM_CANUNDO, 0, 0) != 0; else - SetWindowText(GetHwnd(), value.c_str()); + return false; } -// Clipboard operations -void wxComboBox::Copy() +bool wxComboBox::HasSelection() const { - SendMessage(GetHwnd(), WM_COPY, 0, 0L); + long from, to; + GetSelection(&from, &to); + return from != to; } -void wxComboBox::Cut() +bool wxComboBox::CanCopy() const { - SendMessage(GetHwnd(), WM_CUT, 0, 0L); + // Can copy if there's a selection + return HasSelection(); } -void wxComboBox::Paste() +bool wxComboBox::CanCut() const +{ + return IsEditable() && CanCopy() ; +} + +bool wxComboBox::CanPaste() const { - SendMessage(GetHwnd(), WM_PASTE, 0, 0L); + if ( !IsEditable() ) + return false; + + // Standard edit control: check for straight text on clipboard + if ( !::OpenClipboard(GetHwndOf(wxTheApp->GetTopWindow())) ) + return false; + + bool isTextAvailable = ::IsClipboardFormatAvailable(CF_TEXT) != 0; + ::CloseClipboard(); + + return isTextAvailable; +} + +bool wxComboBox::IsEditable() const +{ + return !HasFlag(wxCB_READONLY); } void wxComboBox::SetEditable(bool WXUNUSED(editable)) @@ -488,30 +663,28 @@ void wxComboBox::SetInsertionPointEnd() // setting insertion point doesn't make sense for read only comboboxes if ( !(GetWindowStyle() & wxCB_READONLY) ) { - long pos = GetLastPosition(); + wxTextPos pos = GetLastPosition(); SetInsertionPoint(pos); } } long wxComboBox::GetInsertionPoint() const { -#ifdef __WIN32__ - DWORD Pos=(DWORD)SendMessage(GetHwnd(), CB_GETEDITSEL, 0, 0L); - return Pos&0xFFFF; -#else - return 0; -#endif + // CB_GETEDITSEL returns the index of the first character of the selection in + // its low-order word + DWORD pos= (DWORD)::SendMessage(GetHwnd(), CB_GETEDITSEL, 0, 0L); + return LOWORD(pos); } -long wxComboBox::GetLastPosition() const +wxTextPos wxComboBox::GetLastPosition() const { HWND hEditWnd = (HWND) GetEditHWND(); // Get number of characters in the last (only) line. We'll add this to the character // index for the last line, 1st position. - int lineLength = (int)SendMessage(hEditWnd, EM_LINELENGTH, (WPARAM) 0, (LPARAM)0L); + wxTextPos lineLength = (wxTextPos)SendMessage(hEditWnd, EM_LINELENGTH, (WPARAM) 0, (LPARAM)0L); - return (long)(lineLength); + return lineLength; } void wxComboBox::Replace(long from, long to, const wxString& value) @@ -536,30 +709,117 @@ void wxComboBox::Remove(long from, long to) void wxComboBox::SetSelection(long from, long to) { - HWND hWnd = GetHwnd(); - long fromChar = from; - long toChar = to; - // if from and to are both -1, it means - // (in wxWindows) that all text should be selected. - // This translates into Windows convention - if ((from == -1) && (to == -1)) + // if from and to are both -1, it means (in wxWidgets) that all text should + // be selected, translate this into Windows convention + if ( (from == -1) && (to == -1) ) { - fromChar = 0; - toChar = -1; + from = 0; } - if ( -#ifdef __WIN32__ - SendMessage(hWnd, CB_SETEDITSEL, (WPARAM)0, (LPARAM)MAKELONG(fromChar, toChar)) -#else // Win16 - SendMessage(hWnd, CB_SETEDITSEL, (WPARAM)fromChar, (LPARAM)toChar) -#endif - == CB_ERR ) + if ( SendMessage(GetHwnd(), CB_SETEDITSEL, + 0, (LPARAM)MAKELONG(from, to)) == CB_ERR ) { wxLogDebug(_T("CB_SETEDITSEL failed")); } } -#endif - // wxUSE_COMBOBOX +void wxComboBox::GetSelection(long* from, long* to) const +{ + DWORD dwStart, dwEnd; + if ( ::SendMessage(GetHwnd(), CB_GETEDITSEL, + (WPARAM)&dwStart, (LPARAM)&dwEnd) == CB_ERR ) + { + *from = + *to = 0; + } + else + { + *from = dwStart; + *to = dwEnd; + } +} + +int wxComboBox::GetSelection() const +{ + return wxChoice::GetSelection(); +} + +// ---------------------------------------------------------------------------- +// standard event handling +// ---------------------------------------------------------------------------- + +void wxComboBox::OnCut(wxCommandEvent& WXUNUSED(event)) +{ + Cut(); +} + +void wxComboBox::OnCopy(wxCommandEvent& WXUNUSED(event)) +{ + Copy(); +} + +void wxComboBox::OnPaste(wxCommandEvent& WXUNUSED(event)) +{ + Paste(); +} + +void wxComboBox::OnUndo(wxCommandEvent& WXUNUSED(event)) +{ + Undo(); +} + +void wxComboBox::OnRedo(wxCommandEvent& WXUNUSED(event)) +{ + Redo(); +} + +void wxComboBox::OnDelete(wxCommandEvent& WXUNUSED(event)) +{ + long from, to; + GetSelection(& from, & to); + if (from != -1 && to != -1) + Remove(from, to); +} + +void wxComboBox::OnSelectAll(wxCommandEvent& WXUNUSED(event)) +{ + SetSelection(-1, -1); +} + +void wxComboBox::OnUpdateCut(wxUpdateUIEvent& event) +{ + event.Enable( CanCut() ); +} + +void wxComboBox::OnUpdateCopy(wxUpdateUIEvent& event) +{ + event.Enable( CanCopy() ); +} + +void wxComboBox::OnUpdatePaste(wxUpdateUIEvent& event) +{ + event.Enable( CanPaste() ); +} + +void wxComboBox::OnUpdateUndo(wxUpdateUIEvent& event) +{ + event.Enable( CanUndo() ); +} + +void wxComboBox::OnUpdateRedo(wxUpdateUIEvent& event) +{ + event.Enable( CanRedo() ); +} + +void wxComboBox::OnUpdateDelete(wxUpdateUIEvent& event) +{ + event.Enable(HasSelection() && IsEditable()) ; +} + +void wxComboBox::OnUpdateSelectAll(wxUpdateUIEvent& event) +{ + event.Enable(GetLastPosition() > 0); +} + +#endif // wxUSE_COMBOBOX