\section{\class{wxListCtrl}}\label{wxlistctrl}
-A list control presents lists in a number of formats: list view, report view, icon view
-and small icon view. Elements are numbered from zero.
-
-To intercept events from a list control, use the event table macros described in \helpref{wxListEvent}{wxlistevent}.
+A list control presents lists in a number of formats: list view, report view,
+icon view and small icon view. In any case, elements are numbered from zero.
+For all these modes, the items are stored in the control and must be added to
+it using \helpref{InsertItem}{wxlistctrlinsertitem} method.
+
+A special case of report view quite different from the other modes of the list
+control is a virtual control in which the items data (including text, images
+and attributes) is managed by the main program and is requested by the control
+itself only when needed which allows to have controls with millions of items
+without consuming much memory. To use virtual list control you must use
+\helpref{SetItemCount}{wxlistctrlsetitemcount} first and overload at least
+\helpref{OnGetItemText}{wxlistctrlongetitemtext} (and optionally
+\helpref{OnGetItemImage}{wxlistctrlongetitemimage} and
+\helpref{OnGetItemAttr}{wxlistctrlongetitemattr}) to return the information
+about the items when the control requests it.
+
+Using many of wxListCtrl features is shown in the
+\helpref{corresponding sample}{samplelistctrl}.
+
+To intercept events from a list control, use the event table macros described
+in \helpref{wxListEvent}{wxlistevent}.
\wxheading{Derived from}
\wxheading{Window styles}
-\twocolwidtha{5cm}
+\twocolwidtha{7cm}
\begin{twocollist}\itemsep=0pt
\twocolitem{\windowstyle{wxLC\_LIST}}{multicolumn list view, with optional small icons.
Columns are computed automatically, i.e. you don't set columns as in wxLC\_REPORT. In other words,
the list wraps, unlike a wxListBox.}
\twocolitem{\windowstyle{wxLC\_REPORT}}{single or multicolumn report view, with optional header.}
+\twocolitem{\windowstyle{wxLC\_VIRTUAL}}{virtual control, may only be used with wxLC\_REPORT}
\twocolitem{\windowstyle{wxLC\_ICON}}{Large icon view, with optional labels.}
\twocolitem{\windowstyle{wxLC\_SMALL\_ICON}}{Small icon view, with optional labels.}
\twocolitem{\windowstyle{wxLC\_ALIGN\_TOP}}{Icons align to the top. Win32 default, Win32 only. }
\twocolitem{\windowstyle{wxLC\_SINGLE\_SEL}}{Single selection.}
\twocolitem{\windowstyle{wxLC\_SORT\_ASCENDING}}{Sort in ascending order (must still supply a comparison callback in SortItems.}
\twocolitem{\windowstyle{wxLC\_SORT\_DESCENDING}}{Sort in descending order (must still supply a comparison callback in SortItems.}
+\twocolitem{\windowstyle{wxLC\_HRULES}}{Draws light horizontal rules between rows in report mode.}
+\twocolitem{\windowstyle{wxLC\_VRULES}}{Draws light vertical rules between columns in report mode.}
\end{twocollist}
See also \helpref{window styles overview}{windowstyles}.
\twocolitem{{\bf EVT\_LIST\_KEY\_DOWN(id, func)}}{A key has been pressed.}
\twocolitem{{\bf EVT\_LIST\_INSERT\_ITEM(id, func)}}{An item has been inserted.}
\twocolitem{{\bf EVT\_LIST\_COL\_CLICK(id, func)}}{A column ({\bf m\_col}) has been left-clicked.}
+\twocolitem{{\bf EVT\_LIST\_ITEM\_RIGHT\_CLICK(id, func)}}{An item has been right-clicked.}
+\twocolitem{{\bf EVT\_LIST\_CACHE\_HINT(id, func)}}{Prepare cache for a virtual list control}
\end{twocollist}%
\wxheading{See also}
\twocolitem{wxLIST\_ALIGN\_SNAP\_TO\_GRID}{Snap to grid.}
\end{twocollist}
-\membersection{wxListCtrl::Create}\label{wxlistctrlcreate}
+\membersection{wxListCtrl::AssignImageList}\label{wxlistctrlassignimagelist}
-\func{bool}{Create}{\param{wxWindow*}{ parent}, \param{wxWindowID}{ id},\rtfsp
-\param{const wxPoint\&}{ pos = wxDefaultPosition}, \param{const wxSize\&}{ size = wxDefaultSize},\rtfsp
-\param{long}{ style = wxLC\_ICON}, \param{const wxValidator\& }{validator = wxDefaultValidator}, \param{const wxString\& }{name = ``listCtrl"}}
+\func{void}{AssignImageList}{\param{wxImageList*}{ imageList}, \param{int }{which}}
-Creates the list control. See \helpref{wxListCtrl::wxListCtrl}{wxlistctrlconstr} for further details.
+Sets the image list associated with the control and
+takes ownership of it (i.e. the control will, unlike when using
+SetImageList, delete the list when destroyed). {\it which} is one of
+wxIMAGE\_LIST\_NORMAL, wxIMAGE\_LIST\_SMALL, wxIMAGE\_LIST\_STATE (the last is unimplemented).
+
+\wxheading{See also}
+
+\helpref{wxListCtrl::SetImageList}{wxlistctrlsetimagelist}
\membersection{wxListCtrl::ClearAll}\label{wxlistctrlclearall}
Deletes all items and all columns.
-\membersection{wxListCtrl::DeleteItem}\label{wxlistctrldeleteitem}
+\membersection{wxListCtrl::Create}\label{wxlistctrlcreate}
-\func{bool}{DeleteItem}{\param{long }{item}}
+\func{bool}{Create}{\param{wxWindow*}{ parent}, \param{wxWindowID}{ id},\rtfsp
+\param{const wxPoint\&}{ pos = wxDefaultPosition}, \param{const wxSize\&}{ size = wxDefaultSize},\rtfsp
+\param{long}{ style = wxLC\_ICON}, \param{const wxValidator\& }{validator = wxDefaultValidator}, \param{const wxString\& }{name = ``listCtrl"}}
-Deletes the specified item.
+Creates the list control. See \helpref{wxListCtrl::wxListCtrl}{wxlistctrlconstr} for further details.
\membersection{wxListCtrl::DeleteAllItems}\label{wxlistctrldeleteallitems}
Deletes all the items in the list control.
+{\bf NB:} This function does {\it not} send the
+{\tt wxEVT\_COMMAND\_LIST\_DELETE\_ITEM} event because deleting many items
+from the control would be too slow then (unlike \helpref{DeleteItem}{wxlistctrldeleteitem}).
+
\membersection{wxListCtrl::DeleteColumn}\label{wxlistctrldeletecolumn}
\func{bool}{DeleteColumn}{\param{int }{col}}
Deletes a column.
+\membersection{wxListCtrl::DeleteItem}\label{wxlistctrldeleteitem}
+
+\func{bool}{DeleteItem}{\param{long }{item}}
+
+Deletes the specified item. This function sends the
+{\tt wxEVT\_COMMAND\_LIST\_DELETE\_ITEM} event for the item being deleted.
+
+See also: \helpref{DeleteAllItems}{wxlistctrldeleteallitems}
+
\membersection{wxListCtrl::EditLabel}\label{wxlistctrledit}
\func{void}{EditLabel}{\param{long }{item}}
\pythonnote{In place of a single overloaded method name, wxPython
implements the following methods:\par
\indented{2cm}{\begin{twocollist}
-\twocolitem{\bf{FindItem(start, str, partial=FALSE)}}{}
-\twocolitem{\bf{FindItemData(start, data)}}{}
-\twocolitem{\bf{FindItemAtPos(start, point, direction)}}{}
+\twocolitem{{\bf FindItem(start, str, partial=FALSE)}}{}
+\twocolitem{{\bf FindItemData(start, data)}}{}
+\twocolitem{{\bf FindItemAtPos(start, point, direction)}}{}
\end{twocollist}}
}
+\perlnote{In wxPerl there are three methods instead of a single overloaded
+method:\par
+\indented{2cm}{\begin{twocollist}
+\twocolitem{{\bf FindItem( start, str, partial = FALSE ) }}{}
+\twocolitem{{\bf FindItemData( start, data ) }}{}
+\twocolitem{{\bf FindItemAtPos( start, point, direction )}}{}
+\end{twocollist}
+}}
+
\membersection{wxListCtrl::GetColumn}\label{wxlistctrlgetcolumn}
\constfunc{bool}{GetColumn}{\param{int }{col}, \param{wxListItem\& }{item}}
Gets information about this column. See \helpref{wxListCtrl::SetItem}{wxlistctrlsetitem} for more
information.
+\perlnote{In wxPerl this method takes only the {\bf col} parameter and
+ returns a Wx::ListItem ( or undef ).}
+
\membersection{wxListCtrl::GetColumnWidth}\label{wxlistctrlgetcolumnwidth}
\constfunc{int}{GetColumnWidth}{\param{int }{col}}
Gets information about the item. See \helpref{wxListCtrl::SetItem}{wxlistctrlsetitem} for more
information.
+You must call {\it info.SetId()} to the ID of item you're interested in
+before calling this method.
+
\pythonnote{The wxPython version of this method takes an integer parameter
-for the item ID, and returns the wxListItem object.
-}
+for the item ID, an optional integer for the column number, and
+returns the wxListItem object.}
+
+\perlnote{In wxPerl this method takes as parameter the {\bf ID} of the item
+and ( optionally ) the column, and returns a Wx::ListItem object.}
+
+\membersection{wxListCtrl::GetItemCount}\label{wxlistctrlgetitemcount}
+
+\constfunc{int}{GetItemCount}{\void}
+
+Returns the number of items in the list control.
\membersection{wxListCtrl::GetItemData}\label{wxlistctrlgetitemdata}
\pythonnote{The wxPython version of this method accepts only the item
ID and returns the wxPoint.}
+\perlnote{In wxPerl this method takes only the {\bf item} parameter and
+returns a Wx::Point ( or undef ).}
+
\membersection{wxListCtrl::GetItemRect}\label{wxlistctrlgetitemrect}
\constfunc{bool}{GetItemRect}{\param{long }{item}, \param{wxRect\& }{rect}, \param{int }{code = wxLIST\_RECT\_BOUNDS}}
{\it code} is one of wxLIST\_RECT\_BOUNDS, wxLIST\_RECT\_ICON, wxLIST\_RECT\_LABEL.
\pythonnote{The wxPython version of this method accepts only the item
-ID and returns the wxRect.}
+ID and code and returns the wxRect.}
-\membersection{wxListCtrl::GetItemState}\label{wxlistctrlgetitemstate}
-
-\constfunc{int}{GetItemState}{\param{long }{item}, \param{long }{stateMask}}
-
-Gets the item state. For a list of state flags, see \helpref{wxListCtrl::SetItem}{wxlistctrlsetitem}.
-
-The {\bf stateMask} indicates which state flags are of interest.
-
-\membersection{wxListCtrl::GetItemCount}\label{wxlistctrlgetitemcount}
-
-\constfunc{int}{GetItemCount}{\void}
-
-Returns the number of items in the list control.
+\perlnote{In wxPerl this method takes only the {\bf item} parameter and
+retutrns a Wx::Rect ( or undef ).}
\membersection{wxListCtrl::GetItemSpacing}\label{wxlistctrlgetitemspacing}
If {\it small} is TRUE, gets the spacing for the small icon
view, otherwise the large icon view.
+\membersection{wxListCtrl::GetItemState}\label{wxlistctrlgetitemstate}
+
+\constfunc{int}{GetItemState}{\param{long }{item}, \param{long }{stateMask}}
+
+Gets the item state. For a list of state flags, see \helpref{wxListCtrl::SetItem}{wxlistctrlsetitem}.
+
+The {\bf stateMask} indicates which state flags are of interest.
+
\membersection{wxListCtrl::GetItemText}\label{wxlistctrlgetitemtext}
\constfunc{wxString}{GetItemText}{\param{long }{item}}
\constfunc{long}{GetNextItem}{\param{long }{item}, \param{int }{geometry = wxLIST\_NEXT\_ALL}, \param{int }{state = wxLIST\_STATE\_DONTCARE}}
-Searches for an item with the given goemetry or state, starting from {\it item}. {\it item} can be -1
-to find the first item that matches the specified flags.
+Searches for an item with the given goemetry or state, starting from
+{\it item} but excluding the {\it item} itself. If {\it item} is -1,
+the first item that matches the specified flags will be returned.
+
+Returns the first item with given state following {\it item} or -1 if
+no such item found.
+
+This function may be used to find all selected items in the control like this:
-Returns the item or -1 if unsuccessful.
+\begin{verbatim}
+ long item = -1;
+ for ( ;; )
+ {
+ item = listctrl->GetNextItem(item,
+ wxLIST_NEXT_ALL,
+ wxLIST_STATE_SELECTED);
+ if ( item == -1 )
+ break;
+
+ // this item is selected - do whatever is needed with it
+ wxLogMessage("Item %ld is selected."), item);
+ }
+\end{verbatim}
{\it geometry} can be one of:
\twocolitem{wxLIST\_NEXT\_RIGHT}{Searches for an item to the right of the specified item.}
\end{twocollist}
+{\bf NB:} this parameters is only supported by wxMSW currently and ignored on
+other platforms.
+
{\it state} can be a bitlist of the following:
\twocolwidtha{5cm}
wxLIST\_HITTEST\_ONITEMSTATEICON.}
\end{twocollist}
+\pythonnote{A tuple of values is returned in the wxPython version of
+this method. The first value is the item id and the second is the
+flags value mentioned above.}
+
+\perlnote{In wxPerl this method only takes the {\bf point} parameter
+ and returns a 2-element list ( item, flags ).}
+
\membersection{wxListCtrl::InsertColumn}\label{wxlistctrlinsertcolumn}
\func{long}{InsertColumn}{\param{long }{col}, \param{wxListItem\& }{info}}
\pythonnote{In place of a single overloaded method name, wxPython
implements the following methods:\par
\indented{2cm}{\begin{twocollist}
-\twocolitem{\bf{InsertColumn(col, heading, format=wxLIST_FORMAT_LEFT,
+\twocolitem{{\bf InsertColumn(col, heading, format=wxLIST\_FORMAT\_LEFT,
width=-1)}}{Creates a column using a header string only.}
-\twocolitem{\bf{InsertColumnInfo(col, item)}}{Creates a column using a
+\twocolitem{{\bf InsertColumnInfo(col, item)}}{Creates a column using a
wxListInfo.}
\end{twocollist}}
}
\pythonnote{In place of a single overloaded method name, wxPython
implements the following methods:\par
-\indented{2cm}{\begin{twocollist}
-\twocolitem{\bf{InsertItem(item)}}{Inserts an item using a wxListItem.}
-\twocolitem{\bf{InsertStringItem(index, label)}}{Inserts a string item.}
-\twocolitem{\bf{InsertImageItem(index, imageIndex)}}{Inserts an image item.}
-\twocolitem{\bf{InsertImageStringItem(index, label, imageIndex)}}{Insert an image/string item.}
+\indented{2cm}{\begin{twocollist}\itemsep=0pt
+\twocolitem{{\bf InsertItem(item)}}{Inserts an item using a wxListItem.}
+\twocolitem{{\bf InsertStringItem(index, label)}}{Inserts a string item.}
+\twocolitem{{\bf InsertImageItem(index, imageIndex)}}{Inserts an image item.}
+\twocolitem{{\bf InsertImageStringItem(index, label, imageIndex)}}{Insert an image/string item.}
\end{twocollist}}
}
+\perlnote{In wxPerl there are four methods instead of a single overloaded
+method:\par
+\indented{2cm}{\begin{twocollist}
+\twocolitem{{\bf InsertItem( item )}}{Inserts a Wx::ListItem}
+\twocolitem{{\bf InsertStringItem( index, label )}}{Inserts a string item}
+\twocolitem{{\bf InsertImageItem( index, imageIndex )}}{Inserts an image item}
+\twocolitem{{\bf InsertImageStringItem( index, label, imageIndex )}}{Inserts
+ an item with a string and an image}
+\end{twocollist}
+}}
+
+\membersection{wxListCtrl::OnGetItemAttr}\label{wxlistctrlongetitemattr}
+
+\func{virtual wxString}{OnGetItemAttr}{\param{long }{item}}
+
+This function may be overloaded in the derived class for a control with
+{\tt wxLC\_VIRTUAL} style. It should return the attribute for the
+for the specified {\tt item} or {\tt NULL} to use the default appearance
+parameters.
+
+The base class version always returns {\tt NULL}.
+
+\wxheading{See also}
+
+\helpref{OnGetItemImage}{wxlistctrlongetitemimage},\\
+\helpref{OnGetItemText}{wxlistctrlongetitemtext}
+
+\membersection{wxListCtrl::OnGetItemImage}\label{wxlistctrlongetitemimage}
+
+\func{virtual wxString}{OnGetItemImage}{\param{long }{item}}
+
+This function may be overloaded in the derived class for a control with
+{\tt wxLC\_VIRTUAL} style. It should return the index of the items image in the
+controls image list or $-1$ for no image.
+
+The base class version always returns $-1$.
+
+\wxheading{See also}
+
+\helpref{OnGetItemText}{wxlistctrlongetitemtext},\\
+\helpref{OnGetItemAttr}{wxlistctrlongetitemattr}
+
+\membersection{wxListCtrl::OnGetItemText}\label{wxlistctrlongetitemtext}
+
+\func{virtual wxString}{OnGetItemText}{\param{long }{item}, \param{long }{column}}
+
+This function {\bf must} be overloaded in the derived class for a control with
+{\tt wxLC\_VIRTUAL} style. It should return the string containing the text of
+the given {\it column} for the specified {\tt item}.
+
+\wxheading{See also}
+
+\helpref{SetItemCount}{wxlistctrlsetitemcount},\\
+\helpref{OnGetItemImage}{wxlistctrlongetitemimage},\\
+\helpref{OnGetItemAttr}{wxlistctrlongetitemattr}
+
\membersection{wxListCtrl::ScrollList}\label{wxlistctrlscrolllist}
\func{bool}{ScrollList}{\param{int }{dx}, \param{int }{dy}}
Sets the image list associated with the control. {\it which} is one of
wxIMAGE\_LIST\_NORMAL, wxIMAGE\_LIST\_SMALL, wxIMAGE\_LIST\_STATE (the last is unimplemented).
+This method does not take ownership of the image list, you have to
+delete it yourself.
+
+\wxheading{See also}
+
+\helpref{wxListCtrl::AssignImageList}{wxlistctrlassignimagelist}
+
+
\membersection{wxListCtrl::SetItem}\label{wxlistctrlsetitem}
\func{bool}{SetItem}{\param{wxListItem\& }{info}}
+\func{long}{SetItem}{\param{long }{index}, \param{int }{col}, \param{const }{wxString\& label}, \param{int }{imageId = -1}}
+
Sets information about the item.
wxListItem is a class with the following members:
The {\bf m\_stateMask} and {\bf m\_state} members take flags from the following:
+The wxListItem object can also contain item-specific colour and font
+information: for this you need to call one of SetTextColour(),
+SetBackgroundColour() or SetFont() functions on it passing it the colour/font
+to use. If the colour/font is not specified, the default list control
+colour/font is used.
+
\twocolwidtha{5cm}
\begin{twocollist}\itemsep=0pt
\twocolitem{wxLIST\_STATE\_DONTCARE}{Don't care what the state is. Win32 only. }
\pythonnote{In place of a single overloaded method name, wxPython
implements the following methods:\par
\indented{2cm}{\begin{twocollist}
-\twocolitem{\bf{SetItem(item)}}{Sets information about the given wxListItem.}
-\twocolitem{\bf{SetStringItem(index, col, label, imageId)}}{Sets a
+\twocolitem{{\bf SetItem(item)}}{Sets information about the given wxListItem.}
+\twocolitem{{\bf SetStringItem(index, col, label, imageId)}}{Sets a
string or image at a given location.}
\end{twocollist}}
}
+\membersection{wxListCtrl::SetItemCount}\label{wxlistctrlsetitemcount}
+
+\func{void}{SetItemCount}{\param{long }{count}}
+
+This method can only be used with virtual list controls. It is used to indicate
+to the control the number of items it contains. After calling it, the main
+program should be ready to handle calls to various item callbacks (such as
+\helpref{OnGetItemText}{wxlistctrlongetitemtext}) for all vitems in the range
+from $0$ to {\it count}.
\membersection{wxListCtrl::SetItemData}\label{wxlistctrlsetitemdata}
\membersection{wxListCtrl::SortItems}\label{wxlistctrlsortitems}
-\func{bool}{SortItems}{\param{wxListCtrlCompare }{fn}, \param{long }{data}}
+\func{bool}{SortItems}{\param{wxListCtrlCompare }{fnSortCallBack}, \param{long }{data}}
+
+Call this function to sort the items in the list control. Sorting is done
+using the specified {\it fnSortCallBack} function. This function must have the
+following prototype:
+
+\begin{verbatim}
+int wxCALLBACK wxListCompareFunction(long item1, long item2, long sortData)
+\end{verbatim}
+
+It is called each time when the two items must be compared and should return 0
+if the items are equal, negative value if the first item is less than the
+second one and positive value if the first one is greater than the second one
+(the same convention as used by {\tt qsort(3)}).
+
+\wxheading{Parameters}
-Sorts the items in the list control.
+\docparam{item1}{client data associated with the first item ({\bf NOT} the index).}
-fn is a function which takes 3 long arguments: item1, item2, data.
+\docparam{item2}{client data associated with the second item ({\bf NOT} the index).}
-item1 is the long data associated with a first item (NOT the index).
+\docparam{data}{the value passed to SortItems() itself.}
-item2 is the long data associated with a second item (NOT the index).
+Notice that the control may only be sorted on client data associated with the
+items, so you {\bf must} use \helpref{SetItemData}{wxlistctrlsetitemdata} if
+you want to be able to sort the items in the control.
-data is the same value as passed to SortItems.
+Please see the \helpref{listctrl sample}{samplelistctrl} for an example of
+using this function.
-The return value is a negative number if the first item should precede the second
-item, a positive number of the second item should precede the first,
-or zero if the two items are equivalent.
+\pythonnote{wxPython uses the sortData parameter to pass the Python
+function to call, so it is not available for programmer use. Call
+SortItems with a reference to a callable object that expects two
+parameters.}
-data is arbitrary data to be passed to the sort function.
+\perlnote{In wxPerl the comparison function must take just two parameters;
+ however, you may use a closure to achieve an effect similar to the
+ SortItems third parameter.}
projects / wxWidgets.git / blobdiff