Defer retrieval of LANG env var, too. No memory management

[wxWidgets.git] / docs / latex / wx / menu.tex

diff --git a/docs/latex/wx/menu.tex b/docs/latex/wx/menu.tex
index 8d2b277cf5a29d4ebeec0a86bab816cba4b69557..ebaf7fb1a4cfc03600b920b9ccc6c75b6e003667 100644 (file)
--- a/docs/latex/wx/menu.tex
+++ b/docs/latex/wx/menu.tex
@@ -12,6 +12,10 @@ identify the selection, or to change the menu item in some way.
 \helpref{wxEvtHandler}{wxevthandler}\\
 \helpref{wxObject}{wxobject}
 
+\wxheading{Include files}
+
+<wx/menu.h>
+
 \wxheading{Event handling}
 
 If the menu is part of a menubar, then \helpref{wxMenuBar}{wxmenubar} event processing is used.
@@ -47,12 +51,28 @@ Constructs a wxMenu object.
 
 \docparam{func}{A callback function if the menu is used as a popup using \helpref{wxWindow::PopupMenu}{wxwindowpopupmenu}.}
 
+\pythonnote{The wxPython version of the \tt{wxMenu} constructor
+doesn't accept the callback argument because of reference counting
+issues.  There is a specialized wxMenu constructor called
+\tt{wxPyMenu} which does and can be used for PopupMenus when callbacks
+are needed.  You must retain a reference to the menu while useing it
+otherwise your callback function will get dereferenced when the menu
+does.
+}
+
 \membersection{wxMenu::\destruct{wxMenu}}
 
 \func{}{\destruct{wxMenu}}{\void}
 
 Destructor, destroying the menu.
 
+Note: under Motif, a popup menu must have a valid parent (the window
+it was last popped up on) when being destroyed. Therefore, make sure
+you delete or re-use the popup menu {\it before} destroying the
+parent window. Re-use in this context means popping up the menu on
+a different window from last time, which causes an implicit destruction
+and recreation of internal data structures.
+
 \membersection{wxMenu::Append}\label{wxmenuappend}
 
 \func{void}{Append}{\param{int}{ id}, \param{const wxString\& }{ item}, \param{const wxString\& }{helpString = ""},\rtfsp
@@ -97,6 +117,17 @@ creation of a menu or menubar.
 \helpref{wxMenu::AppendSeparator}{wxmenuappendseparator}, \helpref{wxMenu::SetLabel}{wxmenusetlabel}, \helpref{wxMenu::GetHelpString}{wxmenugethelpstring},\rtfsp
 \helpref{wxMenu::SetHelpString}{wxmenusethelpstring}, \helpref{wxMenuItem}{wxmenuitem}
 
+
+\pythonnote{In place of a single overloaded method name, wxPython
+implements the following methods:\par
+\indented{2cm}{\begin{twocollist}
+\twocolitem{\bf{Append(id, string, helpStr="", checkable=FALSE)}}{}
+\twocolitem{\bf{AppendMenu(id, string, aMenu, helpStr="")}}{}
+\twocolitem{\bf{AppendItem(aMenuItem)}}{}
+\end{twocollist}}
+}
+
+
 \membersection{wxMenu::AppendSeparator}\label{wxmenuappendseparator}
 
 \func{void}{AppendSeparator}{\void}
@@ -168,15 +199,16 @@ before matching.
 
 \helpref{wxMenu::FindItemForId}{wxmenufinditemforid}
 
-\membersection{wxMenu::FindItemForId}\label{wxmenufinditemforid}
+\membersection{wxMenu::FindItemForId}\label{wxmenufinditem}
 
-\constfunc{wxMenuItem*}{FindItemForId}{\param{int}{ id}}
+\constfunc{wxMenuItem*}{FindItemForId}{\param{int}{ id}, \param{wxMenu **}{ menuForItem = NULL}}
 
 Finds the menu item object associated with the given menu item identifier.
 
 \wxheading{Parameters}
 
 \docparam{id}{Menu item identifier.}
+\docparam{menuForItem}{will be filled with the menu for this item if not NULL.}
 
 \wxheading{Return value}
 
@@ -323,6 +355,18 @@ This is relevant only to popup menus.
 
 \helpref{wxMenu::SetTitle}{wxmenusettitle}
 
+\membersection{wxMenu::UpdateUI}\label{wxmenuupdateui}
+
+\constfunc{void}{UpdateUI}{\param{wxEvtHandler*}{ source = NULL}}
+
+Sends events to {\it source} (or owning window if NULL) to update the
+menu UI. This is called just before the menu is popped up with \helpref{wxWindow::PopupMenu}{wxwindowpopupmenu}, but
+the application may call it at other times if required.
+
+\wxheading{See also}
+
+\helpref{wxUpdateUIEvent}{wxupdateuievent}
+
 \section{\class{wxMenuBar}}\label{wxmenubar}
 
 A menu bar is a series of menus accessible from the top of a frame.
@@ -332,10 +376,22 @@ A menu bar is a series of menus accessible from the top of a frame.
 \helpref{wxEvtHandler}{wxevthandler}\\
 \helpref{wxObject}{wxobject}
 
+\wxheading{Include files}
+
+<wx/menu.h>
+
 \wxheading{Event handling}
 
 To respond to a menu selection, provide a handler for EVT\_MENU, in the frame
-that contains the menu bar.
+that contains the menu bar. If you have a toolbar which uses the same identifiers
+as your EVT\_MENU entries, events from the toolbar will also be processed by your
+EVT\_MENU event handlers.
+
+Note that menu commands (and UI update events for menus) are first sent to
+the focus window within the frame. If no window within the frame has the focus,
+then the events are sent directly to the frame. This allows command and UI update
+handling to be processed by specific windows and controls, and not necessarily
+by the application frame.
 
 \wxheading{See also}
 
@@ -362,6 +418,10 @@ menu bar.}
 
 \docparam{titles}{An array of title strings. Deallocate this array after creating the menu bar.}
 
+\pythonnote{Only the default constructor is supported in wxPython.
+Use wxMenuBar.Append instead.}
+
+
 \membersection{wxMenuBar::\destruct{wxMenuBar}}
 
 \func{void}{\destruct{wxMenuBar}}{\void}
@@ -452,9 +512,9 @@ The menu item identifier, or -1 if none was found.
 Any special menu codes are stripped out of source and target strings
 before matching.
 
-\membersection{wxMenuBar::FindItemById}\label{wxmenubarfinditembyid}
+\membersection{wxMenuBar::FindItemForId}\label{wxmenubarfinditemforid}
 
-\constfunc{wxMenuItem *}{FindItemById}{\param{int}{ id}}
+\constfunc{wxMenuItem *}{FindItemForId}{\param{int}{ id}}
 
 Finds the menu item object associated with the given menu item identifier,