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wxWidgets/include/wx/univ/listbox.h
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wxWidgets/include/wx/univ/listbox.h
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///////////////////////////////////////////////////////////////////////////////
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// Name: wx/univ/listbox.h
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// Purpose: the universal listbox
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// Author: Vadim Zeitlin
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// Modified by:
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// Created: 30.08.00
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// RCS-ID: $Id: listbox.h 61872 2009-09-09 22:37:05Z VZ $
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// Copyright: (c) 2000 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
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// Licence: wxWindows licence
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///////////////////////////////////////////////////////////////////////////////
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#ifndef _WX_UNIV_LISTBOX_H_
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#define _WX_UNIV_LISTBOX_H_
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#include "wx/scrolwin.h" // for wxScrollHelper
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#include "wx/dynarray.h"
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#include "wx/arrstr.h"
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// ----------------------------------------------------------------------------
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// the actions supported by this control
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// ----------------------------------------------------------------------------
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// change the current item
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#define wxACTION_LISTBOX_SETFOCUS wxT("setfocus") // select the item
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#define wxACTION_LISTBOX_MOVEDOWN wxT("down") // select item below
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#define wxACTION_LISTBOX_MOVEUP wxT("up") // select item above
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#define wxACTION_LISTBOX_PAGEDOWN wxT("pagedown") // go page down
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#define wxACTION_LISTBOX_PAGEUP wxT("pageup") // go page up
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#define wxACTION_LISTBOX_START wxT("start") // go to first item
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#define wxACTION_LISTBOX_END wxT("end") // go to last item
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#define wxACTION_LISTBOX_FIND wxT("find") // find item by 1st letter
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// do something with the current item
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#define wxACTION_LISTBOX_ACTIVATE wxT("activate") // activate (choose)
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#define wxACTION_LISTBOX_TOGGLE wxT("toggle") // togglee selected state
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#define wxACTION_LISTBOX_SELECT wxT("select") // sel this, unsel others
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#define wxACTION_LISTBOX_SELECTADD wxT("selectadd") // add to selection
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#define wxACTION_LISTBOX_UNSELECT wxT("unselect") // unselect
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#define wxACTION_LISTBOX_ANCHOR wxT("selanchor") // anchor selection
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// do something with the selection globally (not for single selection ones)
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#define wxACTION_LISTBOX_SELECTALL wxT("selectall") // select all items
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#define wxACTION_LISTBOX_UNSELECTALL wxT("unselectall") // unselect all items
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#define wxACTION_LISTBOX_SELTOGGLE wxT("togglesel") // invert the selection
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#define wxACTION_LISTBOX_EXTENDSEL wxT("extend") // extend to item
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// ----------------------------------------------------------------------------
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// wxListBox: a list of selectable items
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// ----------------------------------------------------------------------------
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class WXDLLEXPORT wxListBox : public wxListBoxBase, public wxScrollHelper
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{
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public:
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// ctors and such
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wxListBox() : wxScrollHelper(this) { Init(); }
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wxListBox(wxWindow *parent,
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wxWindowID id,
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const wxPoint& pos = wxDefaultPosition,
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const wxSize& size = wxDefaultSize,
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int n = 0, const wxString choices[] = (const wxString *) NULL,
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long style = 0,
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const wxValidator& validator = wxDefaultValidator,
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const wxString& name = wxListBoxNameStr )
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: wxScrollHelper(this)
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{
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Init();
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Create(parent, id, pos, size, n, choices, style, validator, name);
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}
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wxListBox(wxWindow *parent,
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wxWindowID id,
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const wxPoint& pos,
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const wxSize& size,
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const wxArrayString& choices,
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long style = 0,
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const wxValidator& validator = wxDefaultValidator,
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const wxString& name = wxListBoxNameStr );
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virtual ~wxListBox();
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bool Create(wxWindow *parent,
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wxWindowID id,
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const wxPoint& pos = wxDefaultPosition,
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const wxSize& size = wxDefaultSize,
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int n = 0, const wxString choices[] = (const wxString *) NULL,
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long style = 0,
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const wxValidator& validator = wxDefaultValidator,
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const wxString& name = wxListBoxNameStr);
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bool Create(wxWindow *parent,
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wxWindowID id,
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const wxPoint& pos,
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const wxSize& size,
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const wxArrayString& choices,
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long style = 0,
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const wxValidator& validator = wxDefaultValidator,
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const wxString& name = wxListBoxNameStr);
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// implement the listbox interface defined by wxListBoxBase
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virtual void Clear();
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virtual void Delete(unsigned int n);
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virtual unsigned int GetCount() const
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{ return (unsigned int)m_strings->GetCount(); }
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virtual wxString GetString(unsigned int n) const
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{ return m_strings->Item(n); }
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virtual void SetString(unsigned int n, const wxString& s);
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virtual int FindString(const wxString& s, bool bCase = false) const
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{ return m_strings->Index(s, bCase); }
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virtual bool IsSelected(int n) const
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{ return m_selections.Index(n) != wxNOT_FOUND; }
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virtual int GetSelection() const;
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virtual int GetSelections(wxArrayInt& aSelections) const;
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protected:
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virtual void DoSetSelection(int n, bool select);
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virtual int DoAppendOnly(const wxString& item);
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virtual int DoAppend(const wxString& item);
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virtual void DoInsertItems(const wxArrayString& items, unsigned int pos);
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virtual void DoSetItems(const wxArrayString& items, void **clientData);
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virtual void DoSetFirstItem(int n);
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virtual void DoSetItemClientData(unsigned int n, void* clientData);
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virtual void* DoGetItemClientData(unsigned int n) const;
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virtual void DoSetItemClientObject(unsigned int n, wxClientData* clientData);
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virtual wxClientData* DoGetItemClientObject(unsigned int n) const;
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public:
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// override some more base class methods
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virtual bool SetFont(const wxFont& font);
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// the wxUniversal-specific methods
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// --------------------------------
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// the current item is the same as the selected one for wxLB_SINGLE
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// listboxes but for the other ones it is just the focused item which may
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// be selected or not
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int GetCurrentItem() const { return m_current; }
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void SetCurrentItem(int n);
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// select the item which is diff items below the current one
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void ChangeCurrent(int diff);
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// activate (i.e. send a LISTBOX_DOUBLECLICKED message) the specified or
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// current (if -1) item
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void Activate(int item = -1);
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// select or unselect the specified or current (if -1) item
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void DoSelect(int item = -1, bool sel = true);
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// more readable wrapper
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void DoUnselect(int item) { DoSelect(item, false); }
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// select an item and send a notification about it
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void SelectAndNotify(int item);
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// ensure that the given item is visible by scrolling it into view
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virtual void EnsureVisible(int n);
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// find the first item [strictly] after the current one which starts with
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// the given string and make it the current one, return true if the current
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// item changed
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bool FindItem(const wxString& prefix, bool strictlyAfter = false);
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bool FindNextItem(const wxString& prefix) { return FindItem(prefix, true); }
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// extend the selection to span the range from the anchor (see below) to
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// the specified or current item
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void ExtendSelection(int itemTo = -1);
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// make this item the new selection anchor: extending selection with
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// ExtendSelection() will work with it
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void AnchorSelection(int itemFrom) { m_selAnchor = itemFrom; }
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// get, calculating it if necessary, the number of items per page, the
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// height of each line and the max width of an item
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int GetItemsPerPage() const;
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wxCoord GetLineHeight() const;
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wxCoord GetMaxWidth() const;
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// override the wxControl virtual methods
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virtual bool PerformAction(const wxControlAction& action,
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long numArg = 0l,
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const wxString& strArg = wxEmptyString);
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static wxInputHandler *GetStdInputHandler(wxInputHandler *handlerDef);
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virtual wxInputHandler *DoGetStdInputHandler(wxInputHandler *handlerDef)
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{
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return GetStdInputHandler(handlerDef);
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}
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// idle processing
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virtual void OnInternalIdle();
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protected:
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// geometry
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virtual wxSize DoGetBestClientSize() const;
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virtual void DoSetSize(int x, int y,
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int width, int height,
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int sizeFlags = wxSIZE_AUTO);
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virtual void DoDraw(wxControlRenderer *renderer);
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virtual wxBorder GetDefaultBorder() const;
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// common part of all ctors
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void Init();
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// event handlers
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void OnSize(wxSizeEvent& event);
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// common part of Clear() and DoSetItems(): clears everything
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virtual void DoClear();
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// refresh the given item(s) or everything
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void RefreshItems(int from, int count);
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void RefreshItem(int n);
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void RefreshFromItemToEnd(int n);
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void RefreshAll();
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// send an event of the given type (using m_current by default)
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bool SendEvent(wxEventType type, int item = -1);
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// calculate the number of items per page using our current size
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void CalcItemsPerPage();
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// can/should we have a horz scrollbar?
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bool HasHorzScrollbar() const
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{ return (m_windowStyle & wxLB_HSCROLL) != 0; }
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// redraw the items in the given range only: called from DoDraw()
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virtual void DoDrawRange(wxControlRenderer *renderer,
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int itemFirst, int itemLast);
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// update the scrollbars and then ensure that the item is visible
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void DoEnsureVisible(int n);
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// mark horz scrollbar for updating
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void RefreshHorzScrollbar();
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// update (show/hide/adjust) the scrollbars
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void UpdateScrollbars();
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// refresh the items specified by m_updateCount and m_updateFrom
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void UpdateItems();
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// the array containing all items (it is sorted if the listbox has
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// wxLB_SORT style)
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wxArrayString* m_strings;
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// this array contains the indices of the selected items (for the single
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// selection listboxes only the first element of it is used and contains
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// the current selection)
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wxArrayInt m_selections;
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// and this one the client data (either void or wxClientData)
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wxArrayPtrVoid m_itemsClientData;
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// the current item
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int m_current;
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private:
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// the range of elements which must be updated: if m_updateCount is 0 no
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// update is needed, if it is -1 everything must be updated, otherwise
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// m_updateCount items starting from m_updateFrom have to be redrawn
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int m_updateFrom,
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m_updateCount;
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// the height of one line in the listbox (all lines have the same height)
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wxCoord m_lineHeight;
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// the maximal width of a listbox item and the item which has it
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wxCoord m_maxWidth;
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int m_maxWidthItem;
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// the extents of horz and vert scrollbars
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int m_scrollRangeX,
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m_scrollRangeY;
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// the number of items per page
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size_t m_itemsPerPage;
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// if the number of items has changed we may need to show/hide the
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// scrollbar
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bool m_updateScrollbarX, m_updateScrollbarY,
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m_showScrollbarX, m_showScrollbarY;
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// if the current item has changed, we might need to scroll if it went out
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// of the window
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bool m_currentChanged;
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// the anchor from which the selection is extended for the listboxes with
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// wxLB_EXTENDED style - this is set to the last item which was selected
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// by not extending the selection but by choosing it directly
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int m_selAnchor;
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DECLARE_EVENT_TABLE()
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DECLARE_DYNAMIC_CLASS(wxListBox)
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};
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#endif // _WX_UNIV_LISTBOX_H_
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