239ef31452
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@39977 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
122 lines
4.4 KiB
TeX
122 lines
4.4 KiB
TeX
\section{\class{wxTaskBarIcon}}\label{wxtaskbaricon}
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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.
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\wxheading{X Window System Note}
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Under X Window System, the window manager must support either
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the \urlref{System Tray Protocol by freedesktop.org}{http://freedesktop.org/Standards/systemtray-spec}
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(WMs used by modern desktop environments such as GNOME >= 2, KDE
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>= 3 and XFCE >= 4 all do) or the older methods used in GNOME 1.2 and
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KDE 1 and 2. If it doesn't, the icon will appear as a toplevel window on
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user's desktop.
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Because not all window managers have system tray, there's no guarantee that
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wxTaskBarIcon will work correctly under X Window System and so the applications
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should use it only as an optional component of their user interface. The user
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should be required to explicitly enable the taskbar icon on Unix, it shouldn't
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be on by default.
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\wxheading{Derived from}
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\helpref{wxEvtHandler}{wxevthandler}\\
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\helpref{wxObject}{wxobject}
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\wxheading{Include files}
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<wx/taskbar.h>
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\wxheading{Event handling}
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To process input from a taskbar icon, use the following event handler macros to direct input to member
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functions that take a wxTaskBarIconEvent argument. Note that not all ports are
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required to send these events and so it's better to override
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\helpref{CreatePopupMenu}{wxtaskbariconcreatepopupmenu} if all that
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the application does is that it shows a popup menu in reaction to mouse click.
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\twocolwidtha{7cm}
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\begin{twocollist}\itemsep=0pt
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\twocolitem{{\bf EVT\_TASKBAR\_MOVE(func)}}{Process a
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wxEVT\_TASKBAR\_MOVE event.}
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\twocolitem{{\bf EVT\_TASKBAR\_LEFT\_DOWN(func)}}{Process a
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wxEVT\_TASKBAR\_LEFT\_DOWN event.}
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\twocolitem{{\bf EVT\_TASKBAR\_LEFT\_UP(func)}}{Process a
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wxEVT\_TASKBAR\_LEFT\_UP event.}
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\twocolitem{{\bf EVT\_TASKBAR\_RIGHT\_DOWN(func)}}{Process a
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wxEVT\_TASKBAR\_RIGHT\_DOWN event.}
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\twocolitem{{\bf EVT\_TASKBAR\_RIGHT\_UP(func)}}{Process a
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wxEVT\_TASKBAR\_RIGHT\_UP event.}
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\twocolitem{{\bf EVT\_TASKBAR\_LEFT\_DCLICK(func)}}{Process a
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wxEVT\_TASKBAR\_LEFT\_DCLICK event.}
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\twocolitem{{\bf EVT\_TASKBAR\_RIGHT\_DCLICK(func)}}{Process a
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wxEVT\_TASKBAR\_RIGHT\_DCLICK event.}
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\end{twocollist}%
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\latexignore{\rtfignore{\wxheading{Members}}}
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\membersection{wxTaskBarIcon::wxTaskBarIcon}\label{wxtaskbariconctor}
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\func{}{wxTaskBarIcon}{\void}
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Default constructor.
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\membersection{wxTaskBarIcon::\destruct{wxTaskBarIcon}}\label{wxtaskbaricondtor}
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\func{}{\destruct{wxTaskBarIcon}}{\void}
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Destroys the wxTaskBarIcon object, removing the icon if not already removed.
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\membersection{wxTaskBarIcon::CreatePopupMenu}\label{wxtaskbariconcreatepopupmenu}
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\func{virtual wxMenu*}{CreatePopupMenu}{\void}
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This method is called by the library when the user requests popup menu
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(on Windows and Unix platforms, this is when the user right-clicks the icon).
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Override this function in order to provide popup menu associated with the icon.
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If CreatePopupMenu returns NULL (this happens by default),
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no menu is shown, otherwise the menu is
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displayed and then deleted by the library as soon as the user dismisses it.
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The events can be handled by a class derived from wxTaskBarIcon.
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\membersection{wxTaskBarIcon::IsIconInstalled}\label{wxtaskbariconisiconinstalled}
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\func{bool}{IsIconInstalled}{\void}
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Returns true if \helpref{SetIcon}{wxtaskbariconseticon} was called with no subsequent \helpref{RemoveIcon}{wxtaskbariconremoveicon}.
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\membersection{wxTaskBarIcon::IsOk}\label{wxtaskbariconisok}
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\func{bool}{IsOk}{\void}
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Returns true if the object initialized successfully.
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\membersection{wxTaskBarIcon::PopupMenu}\label{wxtaskbariconpopupmenu}
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\func{bool}{PopupMenu}{\param{wxMenu*}{ menu}}
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Pops up a menu at the current mouse position. The events can be handled by
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a class derived from wxTaskBarIcon.
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\wxheading{Note}
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It is recommended to override
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\helpref{CreatePopupMenu}{wxtaskbariconcreatepopupmenu}
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callback instead of calling this method from event handler, because some
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ports (e.g. wxCocoa) may not implement PopupMenu and mouse click events at all.
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\membersection{wxTaskBarIcon::RemoveIcon}\label{wxtaskbariconremoveicon}
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\func{bool}{RemoveIcon}{\void}
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Removes the icon previously set with \helpref{SetIcon}{wxtaskbariconseticon}.
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\membersection{wxTaskBarIcon::SetIcon}\label{wxtaskbariconseticon}
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\func{bool}{SetIcon}{\param{const wxIcon\&}{ icon}, \param{const wxString\& }{tooltip}}
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Sets the icon, and optional tooltip text.
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