X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/2c8c812ff3c5038fe43c0011a10d631ef0b5149a..461c9b848bebd4748d614c4be882bf1bb6b65a84:/docs/latex/wx/listctrl.tex?ds=inline

diff --git a/docs/latex/wx/listctrl.tex b/docs/latex/wx/listctrl.tex
index 66ef5a7476..6466cd44b7 100644
--- a/docs/latex/wx/listctrl.tex
+++ b/docs/latex/wx/listctrl.tex
@@ -2,8 +2,21 @@
 
 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.
-
-Using many of wxListCtrl is shown in the
+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
@@ -22,12 +35,13 @@ in \helpref{wxListEvent}{wxlistevent}.
 
 \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. }
@@ -58,15 +72,22 @@ functions that take a \helpref{wxListEvent}{wxlistevent} argument.
 \twocolitem{{\bf EVT\_LIST\_END\_LABEL\_EDIT(id, func)}}{Finish editing a label. This can be prevented by calling \helpref{Veto()}{wxnotifyeventveto}.}
 \twocolitem{{\bf EVT\_LIST\_DELETE\_ITEM(id, func)}}{Delete an item.}
 \twocolitem{{\bf EVT\_LIST\_DELETE\_ALL\_ITEMS(id, func)}}{Delete all items.}
-\twocolitem{{\bf EVT\_LIST\_GET\_INFO(id, func)}}{Request information from the application, usually the item text.}
-\twocolitem{{\bf EVT\_LIST\_SET\_INFO(id, func)}}{Information is being supplied (not implemented).}
+%\twocolitem{{\bf EVT\_LIST\_GET\_INFO(id, func)}}{Request information from the application, usually the item text.}
+%\twocolitem{{\bf EVT\_LIST\_SET\_INFO(id, func)}}{Information is being supplied (not implemented).}
 \twocolitem{{\bf EVT\_LIST\_ITEM\_SELECTED(id, func)}}{The item has been selected.}
 \twocolitem{{\bf EVT\_LIST\_ITEM\_DESELECTED(id, func)}}{The item has been deselected.}
 \twocolitem{{\bf EVT\_LIST\_ITEM\_ACTIVATED(id, func)}}{The item has been activated (ENTER or double click).}
+\twocolitem{{\bf EVT\_LIST\_ITEM\_FOCUSED(id, func)}}{The currently focused item has changed.}
+\twocolitem{{\bf EVT\_LIST\_ITEM\_MIDDLE\_CLICK(id, func)}}{The middle mouse button has been clicked on an item.}
+\twocolitem{{\bf EVT\_LIST\_ITEM\_RIGHT\_CLICK(id, func)}}{The right mouse button has been clicked on an item.}
 \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\_COL\_RIGHT\_CLICK(id, func)}}{A column ({\bf m\_col}) has been right-clicked.}
+\twocolitem{{\bf EVT\_LIST\_COL\_BEGIN\_DRAG(id, func)}}{The user started resizing a column - can be vetoed.}
+\twocolitem{{\bf EVT\_LIST\_COL\_DRAGGING(id, func)}}{The divider between columns is being dragged.}
+\twocolitem{{\bf EVT\_LIST\_COL\_END\_DRAG(id, func)}}{A column has been resized by the user.}
+\twocolitem{{\bf EVT\_LIST\_CACHE\_HINT(id, func)}}{Prepare cache for a virtual list control}
 \end{twocollist}%
 
 \wxheading{See also}
@@ -225,6 +246,15 @@ implements the following methods:\par
 \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}}
@@ -232,6 +262,9 @@ implements the following methods:\par
 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}}
@@ -273,12 +306,15 @@ Returns the specified image list. {\it which} may be one of:
 Gets information about the item. See \helpref{wxListCtrl::SetItem}{wxlistctrlsetitem} for more
 information.
 
-You must call {\it info.SetId()} to se ID of item you're interested in
+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, an optional integer for the column number, and
-returns the wxListItem object.  }
+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}
 
@@ -301,6 +337,9 @@ Returns the position of the item, in icon or small icon view.
 \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}}
@@ -312,6 +351,9 @@ Returns the rectangle representing the item's size and position, in client coord
 \pythonnote{The wxPython version of this method accepts only the item
 ID and code and returns the wxRect.}
 
+\perlnote{In wxPerl this method takes only the {\bf item} parameter and
+retutrns a Wx::Rect ( or undef ).}
+
 \membersection{wxListCtrl::GetItemSpacing}\label{wxlistctrlgetitemspacing}
 
 \constfunc{int}{GetItemSpacing}{\param{bool }{isSmall}}
@@ -432,6 +474,9 @@ wxLIST\_HITTEST\_ONITEMSTATEICON.}
 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 {\tt ( item, flags )}.}
+
 \membersection{wxListCtrl::InsertColumn}\label{wxlistctrlinsertcolumn}
 
 \func{long}{InsertColumn}{\param{long }{col}, \param{wxListItem\& }{info}}
@@ -492,6 +537,64 @@ implements the following methods:\par
 \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 wxListItemAttr *}{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 int}{OnGetItemImage}{\param{long }{item}}
+
+This function must be overloaded in the derived class for a control with 
+{\tt wxLC\_VIRTUAL} style having an \helpref{image list}{wxlistctrlsetimagelist} 
+(if the control doesn't have an image list, it is not necessary to overload
+ it). 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}}
@@ -611,6 +714,16 @@ 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}
 
 \func{bool}{SetItemData}{\param{long }{item}, \param{long }{data}}
@@ -699,3 +812,7 @@ function to call, so it is not available for programmer use.  Call
 SortItems with a reference to a callable object that expects two
 parameters.}
 
+\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.}
+
