978f38c238
2. added more kbd logic to the generic tree ctrl (Home, End are now understood, Left does the same thing as under Windows and not the same thing as Up arrow) git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@1496 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
493 lines
21 KiB
C++
493 lines
21 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: treectrl.h
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// Purpose: wxTreeCtrl class
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// Author: Denis Pershin
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// Modified by:
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// Created: 08/08/98
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// RCS-ID: $Id$
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// Copyright: (c) Denis Pershin
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// Licence: wxWindows license
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/////////////////////////////////////////////////////////////////////////////
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#ifndef _WX_TREECTRL_H_
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#define _WX_TREECTRL_H_
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#ifdef __GNUG__
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#pragma interface "treectrl.h"
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#endif
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#include "wx/textctrl.h"
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#include "wx/control.h"
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#include "wx/event.h"
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#include "wx/imaglist.h"
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#include <gtk/gtk.h>
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// the type for "untyped" data
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typedef long wxDataType;
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// fwd decl
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class wxImageList;
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struct wxTreeViewItem;
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// a callback function used for sorting tree items, it should return -1 if the
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// first item precedes the second, +1 if the second precedes the first or 0 if
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// they're equivalent
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class wxTreeItemData;
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typedef int (*wxTreeItemCmpFunc)(wxTreeItemData *item1, wxTreeItemData *item2);
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// ----------------------------------------------------------------------------
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// constants
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// ----------------------------------------------------------------------------
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// values for the `flags' parameter of wxTreeCtrl::HitTest() which determine
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// where exactly the specified point is situated:
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// above the client area.
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static const int wxTREE_HITTEST_ABOVE = 0x0001;
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// below the client area.
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static const int wxTREE_HITTEST_BELOW = 0x0002;
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// in the client area but below the last item.
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static const int wxTREE_HITTEST_NOWHERE = 0x0004;
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// on the button associated with an item.
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static const int wxTREE_HITTEST_ONITEMBUTTON = 0x0010;
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// on the bitmap associated with an item.
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static const int wxTREE_HITTEST_ONITEMICON = 0x0020;
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// in the indentation associated with an item.
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static const int wxTREE_HITTEST_ONITEMINDENT = 0x0040;
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// on the label (string) associated with an item.
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static const int wxTREE_HITTEST_ONITEMLABEL = 0x0080;
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// in the area to the right of an item.
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static const int wxTREE_HITTEST_ONITEMRIGHT = 0x0100;
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// on the state icon for a tree view item that is in a user-defined state.
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static const int wxTREE_HITTEST_ONITEMSTATEICON = 0x0200;
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// to the right of the client area.
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static const int wxTREE_HITTEST_TOLEFT = 0x0400;
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// to the left of the client area.
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static const int wxTREE_HITTEST_TORIGHT = 0x0800;
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// anywhere on the item
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static const int wxTREE_HITTEST_ONITEM = wxTREE_HITTEST_ONITEMICON |
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wxTREE_HITTEST_ONITEMLABEL |
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wxTREE_HITTEST_ONITEMSTATEICON;
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// NB: all the following flags are for compatbility only and will be removed in
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// next versions
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// flags for deprecated `Expand(int action)'
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enum
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{
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wxTREE_EXPAND_EXPAND,
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wxTREE_EXPAND_COLLAPSE,
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wxTREE_EXPAND_COLLAPSE_RESET,
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wxTREE_EXPAND_TOGGLE
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};
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// flags for deprecated InsertItem() variant
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#define wxTREE_INSERT_FIRST 0xFFFF0001
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#define wxTREE_INSERT_LAST 0xFFFF0002
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// ----------------------------------------------------------------------------
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// wxTreeItemId identifies an element of the tree. In this implementation, it's
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// just a trivial wrapper around GTK GtkTreeItem *. It's opaque for the
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// application.
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// ----------------------------------------------------------------------------
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class WXDLLEXPORT wxTreeItemId {
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public:
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// ctors
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wxTreeItemId() { m_itemId = NULL; }
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// default copy ctor/assignment operator are ok for us
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// accessors
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// is this a valid tree item?
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bool IsOk() const { return m_itemId != NULL; }
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// conversion to/from either real (system-dependent) tree item id or
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// to "long" which used to be the type for tree item ids in previous
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// versions of wxWindows
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// for wxTreeCtrl usage only
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wxTreeItemId(GtkTreeItem *itemId) { m_itemId = itemId; }
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operator GtkTreeItem *() const { return m_itemId; }
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void operator =(GtkTreeItem *item) { m_itemId = item; }
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protected:
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GtkTreeItem *m_itemId;
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};
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// ----------------------------------------------------------------------------
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// wxTreeItemData is some (arbitrary) user class associated with some item. The
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// main advantage of having this class (compared to old untyped interface) is
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// that wxTreeItemData's are destroyed automatically by the tree and, as this
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// class has virtual dtor, it means that the memory will be automatically
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// freed. OTOH, we don't just use wxObject instead of wxTreeItemData because
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// the size of this class is critical: in any real application, each tree leaf
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// will have wxTreeItemData associated with it and number of leaves may be
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// quite big.
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//
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// Because the objects of this class are deleted by the tree, they should
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// always be allocated on the heap!
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// ----------------------------------------------------------------------------
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class WXDLLEXPORT wxTreeItemData : private wxTreeItemId {
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public:
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// default ctor/copy ctor/assignment operator are ok
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// dtor is virtual and all the items are deleted by the tree control when
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// it's deleted, so you normally don't have to care about freeing memory
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// allocated in your wxTreeItemData-derived class
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virtual ~wxTreeItemData() { }
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// accessors: set/get the item associated with this node
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void SetId(const wxTreeItemId& id) { m_itemId = id; }
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const wxTreeItemId& GetId() const { return (wxTreeItemId&) m_itemId; }
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};
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class WXDLLEXPORT wxTreeCtrl: public wxControl {
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public:
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// creation
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// --------
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wxTreeCtrl() { Init(); }
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wxTreeCtrl(wxWindow *parent, wxWindowID id = -1,
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const wxPoint& pos = wxDefaultPosition,
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const wxSize& size = wxDefaultSize,
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long style = wxTR_HAS_BUTTONS | wxTR_LINES_AT_ROOT,
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const wxValidator& validator = wxDefaultValidator,
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const wxString& name = "wxTreeCtrl") {
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Create(parent, id, pos, size, style, validator, name);
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}
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virtual ~wxTreeCtrl();
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bool Create(wxWindow *parent, wxWindowID id = -1,
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const wxPoint& pos = wxDefaultPosition,
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const wxSize& size = wxDefaultSize,
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long style = wxTR_HAS_BUTTONS | wxTR_LINES_AT_ROOT,
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const wxValidator& validator = wxDefaultValidator,
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const wxString& name = "wxTreeCtrl");
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// accessors
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// ---------
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// get the total number of items in the control
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size_t GetCount() const;
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// indent is the number of pixels the children are indented relative to
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// the parents position. SetIndent() also redraws the control
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// immediately.
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unsigned int GetIndent() const;
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void SetIndent(unsigned int indent);
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// image list: these functions allow to associate an image list with
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// the control and retrieve it. Note that the control does _not_ delete
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// the associated image list when it's deleted in order to allow image
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// lists to be shared between different controls.
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//
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// The normal image list is for the icons which correspond to the
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// normal tree item state (whether it is selected or not).
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// Additionally, the application might choose to show a state icon
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// which corresponds to an app-defined item state (for example,
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// checked/unchecked) which are taken from the state image list.
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wxImageList *GetImageList() const;
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wxImageList *GetStateImageList() const;
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void SetImageList(wxImageList *imageList);
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void SetStateImageList(wxImageList *imageList);
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// Functions to work with tree ctrl items. Unfortunately, they can _not_ be
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// member functions of wxTreeItem because they must know the tree the item
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// belongs to for Windows implementation and storing the pointer to
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// wxTreeCtrl in each wxTreeItem is just too much waste.
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// accessors
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// ---------
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// retrieve items label
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wxString GetItemText(const wxTreeItemId& item) const;
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// get the normal item image
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int GetItemImage(const wxTreeItemId& item) const;
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// get the selected item image
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int GetItemSelectedImage(const wxTreeItemId& item) const;
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// get the data associated with the item
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wxTreeItemData *GetItemData(const wxTreeItemId& item) const;
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// modifiers
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// ---------
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// set items label
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void SetItemText(const wxTreeItemId& item, const wxString& text);
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// set the normal item image
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void SetItemImage(const wxTreeItemId& item, int image);
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// set the selected item image
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void SetItemSelectedImage(const wxTreeItemId& item, int image);
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// associate some data with the item
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void SetItemData(const wxTreeItemId& item, wxTreeItemData *data);
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// item status inquiries
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// ---------------------
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// is the item visible (it might be outside the view or not expanded)?
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bool IsVisible(const wxTreeItemId& item) const;
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// does the item has any children?
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bool ItemHasChildren(const wxTreeItemId& item) const;
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// is the item expanded (only makes sense if HasChildren())?
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bool IsExpanded(const wxTreeItemId& item) const;
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// is this item currently selected (the same as has focus)?
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bool IsSelected(const wxTreeItemId& item) const;
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// number of children
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// ------------------
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// if 'recursively' is FALSE, only immediate children count, otherwise
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// the returned number is the number of all items in this branch
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size_t GetChildrenCount(const wxTreeItemId& item, bool recursively = TRUE);
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// navigation
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// ----------
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// wxTreeItemId.IsOk() will return FALSE if there is no such item
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// get the root tree item
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wxTreeItemId GetRootItem() const;
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// get the item currently selected (may return NULL if no selection)
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wxTreeItemId GetSelection() const;
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// get the parent of this item (may return NULL if root)
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wxTreeItemId GetParent(const wxTreeItemId& item) const;
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// for this enumeration function you must pass in a "cookie" parameter
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// which is opaque for the application but is necessary for the library
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// to make these functions reentrant (i.e. allow more than one
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// enumeration on one and the same object simultaneously). Of course,
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// the "cookie" passed to GetFirstChild() and GetNextChild() should be
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// the same!
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// get the first child of this item
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wxTreeItemId GetFirstChild(const wxTreeItemId& item, long& cookie) const;
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// get the next child (after GetFirstChild or GetNextChild)
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wxTreeItemId GetNextChild(const wxTreeItemId& item, long& cookie) const;
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// get the last child of this item - this method doesn't use cookies
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wxTreeItemId GetLastChild(const wxTreeItemId& item) const;
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// get the next sibling of this item
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wxTreeItemId GetNextSibling(const wxTreeItemId& item) const;
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// get the previous sibling
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wxTreeItemId GetPrevSibling(const wxTreeItemId& item) const;
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// get first visible item
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wxTreeItemId GetFirstVisibleItem() const;
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// get the next visible item: item must be visible itself!
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// see IsVisible() and wxTreeCtrl::GetFirstVisibleItem()
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wxTreeItemId GetNextVisible(const wxTreeItemId& item) const;
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// get the previous visible item: item must be visible itself!
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wxTreeItemId GetPrevVisible(const wxTreeItemId& item) const;
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// operations
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// ----------
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// add the root node to the tree
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wxTreeItemId AddRoot(const wxString& text,
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int image = -1, int selectedImage = -1,
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wxTreeItemData *data = NULL);
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// insert a new item in as the first child of the parent
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wxTreeItemId PrependItem(const wxTreeItemId& parent,
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const wxString& text,
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int image = -1, int selectedImage = -1,
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wxTreeItemData *data = NULL);
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// insert a new item after a given one
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wxTreeItemId InsertItem(const wxTreeItemId& parent,
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const wxTreeItemId& idPrevious,
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const wxString& text,
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int image = -1, int selectedImage = -1,
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wxTreeItemData *data = NULL);
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// insert a new item in as the last child of the parent
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wxTreeItemId AppendItem(const wxTreeItemId& parent,
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const wxString& text,
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int image = -1, int selectedImage = -1,
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wxTreeItemData *data = NULL);
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// delete this item and associated data if any
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void Delete(const wxTreeItemId& item);
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// delete all items from the tree
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void DeleteAllItems();
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// expand this item
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void Expand(const wxTreeItemId& item);
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// collapse the item without removing its children
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void Collapse(const wxTreeItemId& item);
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// collapse the item and remove all children
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void CollapseAndReset(const wxTreeItemId& item);
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// toggles the current state
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void Toggle(const wxTreeItemId& item);
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// remove the selection from currently selected item (if any)
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void Unselect();
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// select this item
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void SelectItem(const wxTreeItemId& item);
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// make sure this item is visible (expanding the parent item and/or
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// scrolling to this item if necessary)
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void EnsureVisible(const wxTreeItemId& item);
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// scroll to this item (but don't expand its parent)
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void ScrollTo(const wxTreeItemId& item);
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// start editing the item label: this (temporarily) replaces the item
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// with a one line edit control. The item will be selected if it hadn't
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// been before. textCtrlClass parameter allows you to create an edit
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// control of arbitrary user-defined class deriving from wxTextCtrl.
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wxTextCtrl* EditLabel(const wxTreeItemId& item,
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wxClassInfo* textCtrlClass = CLASSINFO(wxTextCtrl));
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// returns the same pointer as StartEdit() if the item is being edited,
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// NULL otherwise (it's assumed that no more than one item may be
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// edited simultaneously)
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wxTextCtrl* GetEditControl() const;
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// end editing and accept or discard the changes to item label
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void EndEditLabel(const wxTreeItemId& item, bool discardChanges = FALSE);
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// sort the children of this item using the specified callback function
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// (it should return -1, 0 or +1 as usual), if it's not specified
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// alphabetical comparaison is performed.
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//
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// NB: this function is not reentrant!
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void SortChildren(const wxTreeItemId& item,
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wxTreeItemCmpFunc *cmpFunction = NULL);
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// deprecated
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// ----------
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// these methods are deprecated and will be removed in future versions of
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// wxWindows, they're here for compatibility only, don't use them in new
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// code (the comments indicate why these methods are now useless and how to
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// replace them)
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// use Expand, Collapse, CollapseAndReset or Toggle
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void ExpandItem(const wxTreeItemId& item, int action);
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// use AddRoot, PrependItem or AppendItem
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wxTreeItemId InsertItem(const wxTreeItemId& parent,
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const wxString& text,
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int image = -1, int selImage = -1,
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long insertAfter = wxTREE_INSERT_LAST);
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// use Set/GetImageList and Set/GetStateImageList
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wxImageList *GetImageList(int) const
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{ return GetImageList(); }
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void SetImageList(wxImageList *imageList, int)
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{ SetImageList(imageList); }
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void SendExpanding(const wxTreeItemId& item);
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void SendExpanded(const wxTreeItemId& item);
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void SendCollapsing(const wxTreeItemId& item);
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void SendCollapsed(const wxTreeItemId& item);
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void SendSelChanging(const wxTreeItemId& item);
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void SendSelChanged(const wxTreeItemId& item);
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protected:
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wxTreeItemId m_editItem;
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GtkTree *m_tree;
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GtkTreeItem *m_anchor;
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wxTextCtrl* m_textCtrl;
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wxImageList* m_imageListNormal;
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wxImageList* m_imageListState;
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long m_curitemId;
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void SendMessage(wxEventType command, const wxTreeItemId& item);
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// GtkTreeItem *findGtkTreeItem(wxTreeCtrlId &id) const;
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// the common part of all ctors
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void Init();
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// insert a new item in as the last child of the parent
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wxTreeItemId p_InsertItem(GtkTreeItem *p,
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const wxString& text,
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int image, int selectedImage,
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wxTreeItemData *data);
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DECLARE_DYNAMIC_CLASS(wxTreeCtrl)
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};
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// ----------------------------------------------------------------------------
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// wxTreeEvent is a special class for all events associated with tree controls
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//
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// NB: note that not all accessors make sense for all events, see the event
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// descriptions below
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// ----------------------------------------------------------------------------
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class WXDLLEXPORT wxTreeEvent : public wxCommandEvent
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{
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friend wxTreeCtrl;
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public:
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wxTreeEvent(wxEventType commandType = wxEVT_NULL, int id = 0);
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// accessors
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// get the item on which the operation was performed or the newly
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// selected item for wxEVT_COMMAND_TREE_SEL_CHANGED/ING events
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wxTreeItemId GetItem() const { return m_item; }
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// for wxEVT_COMMAND_TREE_SEL_CHANGED/ING events, get the previously
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// selected item
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wxTreeItemId GetOldItem() const { return m_itemOld; }
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// the point where the mouse was when the drag operation started (for
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// wxEVT_COMMAND_TREE_BEGIN_(R)DRAG events only)
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wxPoint GetPoint() const { return m_pointDrag; }
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// keyboard code (for wxEVT_COMMAND_TREE_KEY_DOWN only)
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int GetCode() const { return m_code; }
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// set return code for wxEVT_COMMAND_TREE_ITEM_{EXPAND|COLLAPS}ING events
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// call this to forbid the change in item status
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void Veto() { m_code = TRUE; }
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private:
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// @@ we could save some space by using union here
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int m_code;
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wxTreeItemId m_item,
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m_itemOld;
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wxPoint m_pointDrag;
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DECLARE_DYNAMIC_CLASS(wxTreeEvent)
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};
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typedef void (wxEvtHandler::*wxTreeEventFunction)(wxTreeEvent&);
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// ----------------------------------------------------------------------------
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// macros for handling tree control events
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// ----------------------------------------------------------------------------
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// GetItem() returns the item being dragged, GetPoint() the mouse coords
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#define EVT_TREE_BEGIN_DRAG(id, fn) { wxEVT_COMMAND_TREE_BEGIN_DRAG, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, (wxObject *) NULL },
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#define EVT_TREE_BEGIN_RDRAG(id, fn) { wxEVT_COMMAND_TREE_BEGIN_RDRAG, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, (wxObject *) NULL },
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// GetItem() returns the itme whose label is being edited
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#define EVT_TREE_BEGIN_LABEL_EDIT(id, fn) { wxEVT_COMMAND_TREE_BEGIN_LABEL_EDIT, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, (wxObject *) NULL },
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#define EVT_TREE_END_LABEL_EDIT(id, fn) { wxEVT_COMMAND_TREE_END_LABEL_EDIT, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, (wxObject *) NULL },
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// provide/update information about GetItem() item
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#define EVT_TREE_GET_INFO(id, fn) { wxEVT_COMMAND_TREE_GET_INFO, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, (wxObject *) NULL },
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#define EVT_TREE_SET_INFO(id, fn) { wxEVT_COMMAND_TREE_SET_INFO, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, (wxObject *) NULL },
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// GetItem() is the item being expanded/collapsed, the "ING" versions can use
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#define EVT_TREE_ITEM_EXPANDED(id, fn) { wxEVT_COMMAND_TREE_ITEM_EXPANDED, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, (wxObject *) NULL },
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#define EVT_TREE_ITEM_EXPANDING(id, fn) { wxEVT_COMMAND_TREE_ITEM_EXPANDING, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, (wxObject *) NULL },
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#define EVT_TREE_ITEM_COLLAPSED(id, fn) { wxEVT_COMMAND_TREE_ITEM_COLLAPSED, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, (wxObject *) NULL },
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#define EVT_TREE_ITEM_COLLAPSING(id, fn) { wxEVT_COMMAND_TREE_ITEM_COLLAPSING, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, NULL },
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// GetOldItem() is the item which had the selection previously, GetItem() is
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// the item which acquires selection
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#define EVT_TREE_SEL_CHANGED(id, fn) { wxEVT_COMMAND_TREE_SEL_CHANGED, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, NULL },
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#define EVT_TREE_SEL_CHANGING(id, fn) { wxEVT_COMMAND_TREE_SEL_CHANGING, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, NULL },
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// GetCode() returns the key code
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// NB: this is the only message for which GetItem() is invalid (you may get the
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// item from GetSelection())
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#define EVT_TREE_KEY_DOWN(id, fn) { wxEVT_COMMAND_TREE_KEY_DOWN, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, NULL },
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// GetItem() returns the item being deleted, the associated data (if any) will
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// be deleted just after the return of this event handler (if any)
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#define EVT_TREE_DELETE_ITEM(id, fn) { wxEVT_COMMAND_TREE_DELETE_ITEM, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, (wxObject *) NULL },
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#endif
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// _WX_TREECTRL_H_
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