docs/latex/wx/taskbar.tex

   1 \section{\class{wxTaskBarIcon}}\label{wxtaskbaricon}
   2
   3 This class represents a taskbar icon. A taskbar icon is an icon that appears in the `system tray' and responds to mouse clicks, optionally with a tooltip above it to help provide information.
   4
   5 \wxheading{X Window System Note}
   6
   7 Under X Window System, the window manager must support either
   8 the \urlref{System Tray Protocol by freedesktop.org}{http://freedesktop.org/Standards/systemtray-spec}
   9 (WMs used by modern desktop environments such as GNOME >= 2, KDE
  10 >= 3 and XFCE >= 4 all do) or the older methods used in GNOME 1.2 and
  11 KDE 1 and 2. If it doesn't, the icon will appear as a toplevel window on
  12 user's desktop.
  13
  14 Because not all window managers have system tray, there's no guarantee that
  15 wxTaskBarIcon will work correctly under X Window System and so the applications
  16 should use it only as an optional component of their user interface. The user
  17 should be required to explicitly enable the taskbar icon on Unix, it shouldn't
  18 be on by default.
  19
  20
  21 \wxheading{Derived from}
  22
  23 \helpref{wxEvtHandler}{wxevthandler}\\
  24 \helpref{wxObject}{wxobject}
  25
  26 \wxheading{Include files}
  27
  28 <wx/taskbar.h>
  29
  30 \wxheading{Event handling}
  31
  32 To process input from a taskbar icon, use the following event handler macros to direct input to member
  33 functions that take a wxTaskBarIconEvent argument. Note that not all ports are
  34 required to send these events and so it's better to override
  35 \helpref{CreatePopupMenu}{wxtaskbariconcreatepopupmenu} if all that
  36 the application does is that it shows a popup menu in reaction to mouse click.
  37
  38 \twocolwidtha{7cm}
  39 \begin{twocollist}\itemsep=0pt
  40 \twocolitem{{\bf EVT\_TASKBAR\_MOVE(func)}}{Process a
  41 wxEVT\_TASKBAR\_MOVE event.}
  42 \twocolitem{{\bf EVT\_TASKBAR\_LEFT\_DOWN(func)}}{Process a
  43 wxEVT\_TASKBAR\_LEFT\_DOWN event.}
  44 \twocolitem{{\bf EVT\_TASKBAR\_LEFT\_UP(func)}}{Process a
  45 wxEVT\_TASKBAR\_LEFT\_UP event.}
  46 \twocolitem{{\bf EVT\_TASKBAR\_RIGHT\_DOWN(func)}}{Process a
  47 wxEVT\_TASKBAR\_RIGHT\_DOWN event.}
  48 \twocolitem{{\bf EVT\_TASKBAR\_RIGHT\_UP(func)}}{Process a
  49 wxEVT\_TASKBAR\_RIGHT\_UP event.}
  50 \twocolitem{{\bf EVT\_TASKBAR\_LEFT\_DCLICK(func)}}{Process a
  51 wxEVT\_TASKBAR\_LEFT\_DCLICK event.}
  52 \twocolitem{{\bf EVT\_TASKBAR\_RIGHT\_DCLICK(func)}}{Process a
  53 wxEVT\_TASKBAR\_RIGHT\_DCLICK event.}
  54 \end{twocollist}%
  55
  56 \latexignore{\rtfignore{\wxheading{Members}}}
  57
  58 \membersection{wxTaskBarIcon::wxTaskBarIcon}\label{wxtaskbariconctor}
  59
  60 \func{}{wxTaskBarIcon}{\void}
  61
  62 Default constructor.
  63
  64 \membersection{wxTaskBarIcon::\destruct{wxTaskBarIcon}}\label{wxtaskbaricondtor}
  65
  66 \func{}{\destruct{wxTaskBarIcon}}{\void}
  67
  68 Destroys the wxTaskBarIcon object, removing the icon if not already removed.
  69
  70 \membersection{wxTaskBarIcon::CreatePopupMenu}\label{wxtaskbariconcreatepopupmenu}
  71
  72 \func{virtual wxMenu*}{CreatePopupMenu}{\void}
  73
  74 This method is called by the library when the user requests popup menu
  75 (on Windows and Unix platforms, this is when the user right-clicks the icon).
  76 Override this function in order to provide popup menu associated with the icon.
  77
  78 If CreatePopupMenu returns NULL (this happens by default),
  79 no menu is shown, otherwise the menu is
  80 displayed and then deleted by the library as soon as the user dismisses it.
  81 The events can be handled by a class derived from wxTaskBarIcon.
  82
  83 \membersection{wxTaskBarIcon::IsIconInstalled}\label{wxtaskbariconisiconinstalled}
  84
  85 \func{bool}{IsIconInstalled}{\void}
  86
  87 Returns true if \helpref{SetIcon}{wxtaskbariconseticon} was called with no subsequent \helpref{RemoveIcon}{wxtaskbariconremoveicon}.
  88
  89 \membersection{wxTaskBarIcon::IsOk}\label{wxtaskbariconisok}
  90
  91 \func{bool}{IsOk}{\void}
  92
  93 Returns true if the object initialized successfully.
  94
  95 \membersection{wxTaskBarIcon::PopupMenu}\label{wxtaskbariconpopupmenu}
  96
  97 \func{bool}{PopupMenu}{\param{wxMenu*}{ menu}}
  98
  99 Pops up a menu at the current mouse position. The events can be handled by
 100 a class derived from wxTaskBarIcon.
 101
 102 \wxheading{Note}
 103
 104 It is recommended to override
 105 \helpref{CreatePopupMenu}{wxtaskbariconcreatepopupmenu}
 106 callback instead of calling this method from event handler, because some
 107 ports (e.g. wxCocoa) may not implement PopupMenu and mouse click events at all.
 108
 109 \membersection{wxTaskBarIcon::RemoveIcon}\label{wxtaskbariconremoveicon}
 110
 111 \func{bool}{RemoveIcon}{\void}
 112
 113 Removes the icon previously set with \helpref{SetIcon}{wxtaskbariconseticon}.
 114
 115 \membersection{wxTaskBarIcon::SetIcon}\label{wxtaskbariconseticon}
 116
 117 \func{bool}{SetIcon}{\param{const wxIcon\&}{ icon}, \param{const wxString\& }{tooltip}}
 118
 119 Sets the icon, and optional tooltip text.
 120
 121