docs/latex/wx/treeevt.tex

   1 \section{\class{wxTreeEvent}}\label{wxtreeevent}
   2
   3 A tree event holds information about events associated with wxTreeCtrl objects.
   4
   5 \wxheading{Derived from}
   6
   7 \helpref{wxNotifyEvent}{wxnotifyevent}\\
   8 \helpref{wxCommandEvent}{wxcommandevent}\\
   9 \helpref{wxEvent}{wxevent}\\
  10 \helpref{wxObject}{wxobject}
  11
  12 \wxheading{Include files}
  13
  14 <wx/treectrl.h>
  15
  16 \wxheading{Event table macros}
  17
  18 To process input from a tree control, use these event handler macros to direct input to member
  19 functions that take a wxTreeEvent argument.
  20
  21 \twocolwidtha{9cm}
  22 \begin{twocollist}\itemsep=0pt
  23 \twocolitem{{\bf EVT\_TREE\_BEGIN\_DRAG(id, func)}}{The user has started dragging an item with the left mouse button. The event handler must call {\bf wxTreeEvent::Allow()} for the drag operation to continue.}
  24 \twocolitem{{\bf EVT\_TREE\_BEGIN\_RDRAG(id, func)}}{The user has started dragging an item with the right mouse button. The event handler must call {\bf wxTreeEvent::Allow()} for the drag operation to continue.}
  25 \twocolitem{{\bf EVT\_TREE\_BEGIN\_LABEL\_EDIT(id, func)}}{Begin editing a label. This can be prevented by calling \helpref{Veto()}{wxnotifyeventveto}.}
  26 \twocolitem{{\bf EVT\_TREE\_END\_DRAG(id, func)}}{The user has released the mouse after dragging an item.}
  27 \twocolitem{{\bf EVT\_TREE\_END\_LABEL\_EDIT(id, func)}}{The user has finished editing a label. This can be prevented by calling \helpref{Veto()}{wxnotifyeventveto}.}
  28 \twocolitem{{\bf EVT\_TREE\_DELETE\_ITEM(id, func)}}{A tree item has been deleted.}
  29 % thy're not very (or at all) useful currently
  30 %\twocolitem{{\bf EVT\_TREE\_GET\_INFO(id, func)}}{Request information from the application.}
  31 %\twocolitem{{\bf EVT\_TREE\_SET\_INFO(id, func)}}{Information is being supplied.}
  32 \twocolitem{{\bf EVT\_TREE\_ITEM\_ACTIVATED(id, func)}}{An item has been activated (e.g. double clicked).}
  33 \twocolitem{{\bf EVT\_TREE\_ITEM\_COLLAPSED(id, func)}}{The item has been collapsed.}
  34 \twocolitem{{\bf EVT\_TREE\_ITEM\_COLLAPSING(id, func)}}{The item is being collapsed. This can be prevented by calling \helpref{Veto()}{wxnotifyeventveto}.}
  35 \twocolitem{{\bf EVT\_TREE\_ITEM\_EXPANDED(id, func)}}{The item has been expanded.}
  36 \twocolitem{{\bf EVT\_TREE\_ITEM\_EXPANDING(id, func)}}{The item is being expanded. This can be prevented by calling \helpref{Veto()}{wxnotifyeventveto}.}
  37 \twocolitem{{\bf EVT\_TREE\_ITEM\_RIGHT\_CLICK(id, func)}}{The user has clicked the item with the right mouse button.}
  38 \twocolitem{{\bf EVT\_TREE\_ITEM\_MIDDLE\_CLICK(id, func)}}{The user has clicked the item with the middle mouse button.}
  39 \twocolitem{{\bf EVT\_TREE\_KEY\_DOWN(id, func)}}{A key has been pressed.}
  40 \twocolitem{{\bf EVT\_TREE\_SEL\_CHANGED(id, func)}}{Selection has changed.}
  41 \twocolitem{{\bf EVT\_TREE\_SEL\_CHANGING(id, func)}}{Selection is changing. This can be prevented by calling \helpref{Veto()}{wxnotifyeventveto}.}
  42 \end{twocollist}%
  43
  44 \wxheading{See also}
  45
  46 \helpref{wxTreeCtrl}{wxtreectrl}
  47
  48 \latexignore{\rtfignore{\wxheading{Members}}}
  49
  50 \membersection{wxTreeEvent::wxTreeEvent}
  51
  52 \func{}{wxTreeEvent}{\param{WXTYPE }{commandType = 0}, \param{int }{id = 0}}
  53
  54 Constructor.
  55
  56 \membersection{wxTreeEvent::GetKeyCode}
  57
  58 \constfunc{int}{GetKeyCode}{}
  59
  60 Returns the key code if the event was is a key event. Use
  61 \helpref{GetKeyEvent}{wxtreeeventgetkeyevent} to get the values of the
  62 modifier keys for this event (i.e. Shift or Ctrl).
  63
  64 \membersection{wxTreeEvent::GetItem}
  65
  66 \constfunc{wxTreeItemId}{GetItem}{}
  67
  68 Returns the item (valid for all events).
  69
  70 \membersection{wxTreeEvent::GetKeyEvent}\label{wxtreeeventgetkeyevent}
  71
  72 \constfunc{const wxKeyEvent\&}{GetKeyEvent}{}
  73
  74 Returns the key event for {\tt EVT\_TREE\_KEY\_DOWN} events.
  75
  76 \membersection{wxTreeEvent::GetLabel}
  77
  78 \constfunc{const wxString\&}{GetLabel}{}
  79
  80 Returns the label if the event was a begin or end edit label event.
  81
  82 \membersection{wxTreeEvent::GetOldItem}
  83
  84 \constfunc{wxTreeItemId}{GetOldItem}{}
  85
  86 Returns the old item index (valid for EVT\_TREE\_ITEM\_CHANGING and CHANGED events)
  87
  88 \membersection{wxTreeEvent::GetPoint()}
  89
  90 \constfunc{wxPoint}{GetPoint}{}
  91
  92 Returns the position of the mouse pointer if the event is a drag event.
  93
  94 \membersection{wxTreeEvent::IsEditCancelled()}
  95
  96 \constfunc{bool}{IsEditCancelled}{}
  97
  98 Returns true if the label edit was cancelled. This should be
  99 called from within an EVT\_TREE\_END\_LABEL\_EDIT handler.
 100