X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/f35398824b11747a5930f729409b9fa59da3fad9..933b675ed41f626e6573a0c9c402acbc0283d2da:/docs/latex/wx/listctrl.tex diff --git a/docs/latex/wx/listctrl.tex b/docs/latex/wx/listctrl.tex index 87c08b3077..03cd4fd808 100644 --- a/docs/latex/wx/listctrl.tex +++ b/docs/latex/wx/listctrl.tex @@ -2,8 +2,26 @@ 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. Virtual list control can be used +as a normal one except that no operations which can take time proportional to +the number of items in the control happen -- this is required to allow having a +practically infinite number of items. For example, in a multiple selection +virtual list control, the selections won't be sent when many items are selected +at once because this could mean iterating over all the items. + +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 @@ -22,21 +40,22 @@ 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. } \twocolitem{\windowstyle{wxLC\_ALIGN\_LEFT}}{Icons align to the left. } \twocolitem{\windowstyle{wxLC\_AUTOARRANGE}}{Icons arrange themselves. Win32 only. } -\twocolitem{\windowstyle{wxLC\_USER\_TEXT}}{The application provides label text on demand, except for column headers. Win32 only. } +\twocolitem{\windowstyle{wxLC\_VIRTUAL}}{The application provides items text on demand.} \twocolitem{\windowstyle{wxLC\_EDIT\_LABELS}}{Labels are editable: the application will be notified when editing starts.} -\twocolitem{\windowstyle{wxLC\_NO\_HEADER}}{No header in report mode. Win32 only. } -\twocolitem{\windowstyle{wxLC\_SINGLE\_SEL}}{Single selection.} +\twocolitem{\windowstyle{wxLC\_NO\_HEADER}}{No header in report mode. } +\twocolitem{\windowstyle{wxLC\_SINGLE\_SEL}}{Single selection (default is multiple).} \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.} @@ -58,21 +77,29 @@ 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} \helpref{wxListCtrl overview}{wxlistctrloverview}, \helpref{wxListBox}{wxlistbox}, \helpref{wxTreeCtrl}{wxtreectrl},\rtfsp -\helpref{wxImageList}{wximagelist}, \helpref{wxListEvent}{wxlistevent} +\helpref{wxImageList}{wximagelist}, \helpref{wxListEvent}{wxlistevent}, +\helpref{wxListItem}{wxlistitem} \latexignore{\rtfignore{\wxheading{Members}}} @@ -201,7 +228,7 @@ Ensures this item is visible. \membersection{wxListCtrl::FindItem}\label{wxlistctrlfinditem} -\func{long}{FindItem}{\param{long }{start}, \param{const wxString\& }{str}, \param{const bool }{partial = FALSE}} +\func{long}{FindItem}{\param{long }{start}, \param{const wxString\& }{str}, \param{const bool }{partial = false}} Find an item whose label matches this string, starting from the item after {\it start} or the beginning if {\it start} is -1. @@ -219,7 +246,7 @@ the item after {\it start} or the beginning if {\it start} is -1. \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 FindItem(start, str, partial=false)}}{} \twocolitem{{\bf FindItemData(start, data)}}{} \twocolitem{{\bf FindItemAtPos(start, point, direction)}}{} \end{twocollist}} @@ -228,7 +255,7 @@ implements the following methods:\par \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 FindItem( start, str, partial = false ) }}{} \twocolitem{{\bf FindItemData( start, data ) }}{} \twocolitem{{\bf FindItemAtPos( start, point, direction )}}{} \end{twocollist} @@ -244,6 +271,12 @@ information. \perlnote{In wxPerl this method takes only the {\bf col} parameter and returns a Wx::ListItem ( or undef ).} +\membersection{wxListCtrl::GetColumnCount}\label{wxlistctrlgetcolumncount} + +\constfunc{int}{GetColumnCount}{\void} + +Returns the number of columns. + \membersection{wxListCtrl::GetColumnWidth}\label{wxlistctrlgetcolumnwidth} \constfunc{int}{GetColumnWidth}{\param{int }{col}} @@ -261,9 +294,12 @@ or small icon view). \membersection{wxListCtrl::GetEditControl}\label{wxlistctrlgeteditcontrol} -\constfunc{wxTextCtrl\&}{GetEditControl}{\void} +\constfunc{wxTextCtrl *}{GetEditControl}{\void} + +Returns the edit control being currently used to edit a label. Returns {\tt NULL} +if no label is being edited. -Gets the edit control for editing labels. +{\bf NB:} It is currently only implemented for wxMSW. \membersection{wxListCtrl::GetImageList}\label{wxlistctrlgetimagelist} @@ -331,15 +367,17 @@ Returns the rectangle representing the item's size and position, in client coord 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 ).} +returns a Wx::Rect ( or undef ).} + \membersection{wxListCtrl::GetItemSpacing}\label{wxlistctrlgetitemspacing} -\constfunc{int}{GetItemSpacing}{\param{bool }{isSmall}} +\constfunc{wxSize}{GetItemSpacing}{\void} + +Retrieves the spacing between icons in pixels: horizontal spacing is returned +as \texttt{x} component of the \helpref{wxSize}{wxsize} object and the vertical +spacing as its \texttt{y} component. -Retrieves the spacing between icons in pixels. -If {\it small} is TRUE, gets the spacing for the small icon -view, otherwise the large icon view. \membersection{wxListCtrl::GetItemState}\label{wxlistctrlgetitemstate} @@ -359,7 +397,7 @@ Gets the item text for this 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 +Searches for an item with the given geometry 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. @@ -427,6 +465,19 @@ Gets the text colour of the list control. Gets the index of the topmost visible item when in list or report view. + +\membersection{wxRect}{wxListCtrl::GetViewRect}\label{wxlistctrlgetviewrect} + +\constfunc{wxRect}{GetViewRect}{\void} + +Returns the rectangle taken by all items in the control. In other words, if the +controls client size were equal to the size of this rectangle, no scrollbars +would be needed and no free space would be left. + +Note that this function only works in the icon and small icon views, not in +list or report views (this is a limitation of the native Win32 control). + + \membersection{wxListCtrl::HitTest}\label{wxlistctrlhittest} \func{long}{HitTest}{\param{const wxPoint\& }{point}, \param{int\& }{flags}} @@ -454,18 +505,16 @@ 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 ).} + and returns a 2-element list {\tt ( item, flags )}.} \membersection{wxListCtrl::InsertColumn}\label{wxlistctrlinsertcolumn} \func{long}{InsertColumn}{\param{long }{col}, \param{wxListItem\& }{info}} -For list view mode (only), inserts a column. For more details, see \helpref{wxListCtrl::SetItem}{wxlistctrlsetitem}. - \func{long}{InsertColumn}{\param{long }{col}, \param{const wxString\& }{heading}, \param{int }{format = wxLIST\_FORMAT\_LEFT},\rtfsp \param{int }{width = -1}} -For list view mode (only), inserts a column. For more details, see \helpref{wxListCtrl::SetItem}{wxlistctrlsetitem}. +For report view mode (only), inserts a column. For more details, see \helpref{wxListCtrl::SetItem}{wxlistctrlsetitem}. \pythonnote{In place of a single overloaded method name, wxPython implements the following methods:\par @@ -527,16 +576,87 @@ method:\par \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::RefreshItem}\label{wxlistctrlrefreshitem} + +\func{void}{RefreshItem}{\param{long }{item}} + +Redraws the given {\it item}. This is only useful for the virtual list controls +as without calling this function the displayed value of the item doesn't change +even when the underlying data does change. + +\wxheading{See also} + +\helpref{RefreshItems}{wxlistctrlrefreshitems} + + +\membersection{wxListCtrl::RefreshItems}\label{wxlistctrlrefreshitems} + +\func{void}{RefreshItems}{\param{long }{itemFrom}, \param{long }{itemTo}} + +Redraws the items between {\it itemFrom} and {\it itemTo}. The starting item +must be less than or equal to the ending one. + +Just as \helpref{RefreshItem}{wxlistctrlrefreshitem} this is only useful for +virtual list controls. + + \membersection{wxListCtrl::ScrollList}\label{wxlistctrlscrolllist} \func{bool}{ScrollList}{\param{int }{dx}, \param{int }{dy}} -Scrolls the list control. If in icon, small icon or report view mode, -dx specifies the number of pixels to scroll. If in list view mode, dx -specifies the number of columns to scroll. +Scrolls the list control. If in icon, small icon or report view mode, +{\it dx} specifies the number of pixels to scroll. If in list view mode, +{\it dx} specifies the number of columns to scroll. {\it dy} always specifies +the number of pixels to scroll vertically. -If in icon, small icon or list view mode, dy specifies the number of pixels -to scroll. If in report view mode, dy specifies the number of lines to scroll. +{\bf NB:} This method is currently only implemented in the Windows version. \membersection{wxListCtrl::SetBackgroundColour}\label{wxlistctrlsetbackgroundcolour} @@ -646,6 +766,16 @@ 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 items in the range +from $0$ to {\it count}. + \membersection{wxListCtrl::SetItemData}\label{wxlistctrlsetitemdata} \func{bool}{SetItemData}{\param{long }{item}, \param{long }{data}} @@ -681,7 +811,7 @@ Sets the item text for this item. \membersection{wxListCtrl::SetSingleStyle}\label{wxlistctrlsetsinglestyle} -\func{void}{SetSingleStyle}{\param{long }{style}, \param{const bool }{add = TRUE}} +\func{void}{SetSingleStyle}{\param{long }{style}, \param{const bool }{add = true}} Adds or removes a single window style.