Documented new menu label functions

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

diff --git a/docs/latex/wx/treectrl.tex b/docs/latex/wx/treectrl.tex
index 7105a9638cc24eea1dfdf7985cc97878e5f695d0..26118922e6dde8917faa32c4f95bd61581518697 100644 (file)
--- a/docs/latex/wx/treectrl.tex
+++ b/docs/latex/wx/treectrl.tex
@@ -1,8 +1,19 @@
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%% Name:        treectrl.tex
+%% Purpose:     wxTreeCtrl documentation
+%% Author:      wxWidgets Team
+%% Modified by:
+%% Created:
+%% RCS-ID:      $Id$
+%% Copyright:   (c) wxWidgets Team
+%% License:     wxWindows license
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+

 \section{\class{wxTreeCtrl}}\label{wxtreectrl}
 
 A tree control presents information as a hierarchy, with items that may be expanded
 to show further items. Items in a tree control are referenced by wxTreeItemId handles,
 \section{\class{wxTreeCtrl}}\label{wxtreectrl}
 
 A tree control presents information as a hierarchy, with items that may be expanded
 to show further items. Items in a tree control are referenced by wxTreeItemId handles,

-which may be tested for validity by calling wxTreeItemId::IsOk.
+which may be tested for validity by calling \helpref{wxTreeItemId::IsOk}{wxtreeitemidisok}.

 
 To intercept events from a tree control, use the event table macros described in \helpref{wxTreeEvent}{wxtreeevent}.
 
 
 To intercept events from a tree control, use the event table macros described in \helpref{wxTreeEvent}{wxtreeevent}.
 


@@ -17,6 +28,10 @@ To intercept events from a tree control, use the event table macros described in
 
 <wx/treectrl.h>
 
 
 <wx/treectrl.h>
 

+\wxheading{Library}
+
+\helpref{wxCore}{librarieslist}
+

 \wxheading{Window styles}
 
 \twocolwidtha{5cm}
 \wxheading{Window styles}
 
 \twocolwidtha{5cm}


@@ -27,15 +42,11 @@ if you wish the user to be able to edit labels in the tree control.}
 to document that no buttons are to be drawn.}
 \twocolitem{\windowstyle{wxTR\_HAS\_BUTTONS}}{Use this style
 to show + and - buttons to the left of parent items.}
 to document that no buttons are to be drawn.}
 \twocolitem{\windowstyle{wxTR\_HAS\_BUTTONS}}{Use this style
 to show + and - buttons to the left of parent items.}

-\twocolitem{\windowstyle{wxTR\_TWIST\_BUTTONS}}{Use this style
-to show Mac-style twister buttons to the left of parent items.
-If both wxTR\_HAS\_BUTTONS and wxTR\_TWIST\_BUTTONS are given,
-twister buttons are generated.  Generic only.}

 \twocolitem{\windowstyle{wxTR\_NO\_LINES}}{Use this style
 to hide vertical level connectors.}
 \twocolitem{\windowstyle{wxTR\_FULL\_ROW\_HIGHLIGHT}}{Use this style to have the background
 colour and the selection highlight extend over the entire horizontal
 \twocolitem{\windowstyle{wxTR\_NO\_LINES}}{Use this style
 to hide vertical level connectors.}
 \twocolitem{\windowstyle{wxTR\_FULL\_ROW\_HIGHLIGHT}}{Use this style to have the background
 colour and the selection highlight extend over the entire horizontal

-row of the tree control window. (This flag is ignored under Windows unless you 
+row of the tree control window. (This flag is ignored under Windows unless you

 specify wxTR\_NO\_LINES as well.) }
 \twocolitem{\windowstyle{wxTR\_LINES\_AT\_ROOT}}{Use this style
 to show lines between root nodes.
 specify wxTR\_NO\_LINES as well.) }
 \twocolitem{\windowstyle{wxTR\_LINES\_AT\_ROOT}}{Use this style
 to show lines between root nodes.


@@ -58,8 +69,6 @@ to be deselected.  This is the default.}
 \twocolitem{\windowstyle{wxTR\_MULTIPLE}}{Use this style
 to allow a range of items to be selected.
 If a second range is selected, the current range, if any, is deselected.}
 \twocolitem{\windowstyle{wxTR\_MULTIPLE}}{Use this style
 to allow a range of items to be selected.
 If a second range is selected, the current range, if any, is deselected.}

-\twocolitem{\windowstyle{wxTR\_EXTENDED}}{Use this style
-to allow disjoint items to be selected.  (Only partially implemented; may not work in all cases.)}

 \twocolitem{\windowstyle{wxTR\_DEFAULT\_STYLE}}{The set of flags that are
 closest to the defaults for the native control for a particular toolkit.}
 \end{twocollist}
 \twocolitem{\windowstyle{wxTR\_DEFAULT\_STYLE}}{The set of flags that are
 closest to the defaults for the native control for a particular toolkit.}
 \end{twocollist}


@@ -93,7 +102,8 @@ functions that take a \helpref{wxTreeEvent}{wxtreeevent} argument.
 \twocolitem{{\bf EVT\_TREE\_KEY\_DOWN(id, func)}}{A key has been pressed.}
 \twocolitem{{\bf EVT\_TREE\_ITEM\_GETTOOLTIP(id, func)}}{The opportunity to set the item tooltip
 is being given to the application (call wxTreeEvent::SetToolTip). Windows only.}
 \twocolitem{{\bf EVT\_TREE\_KEY\_DOWN(id, func)}}{A key has been pressed.}
 \twocolitem{{\bf EVT\_TREE\_ITEM\_GETTOOLTIP(id, func)}}{The opportunity to set the item tooltip
 is being given to the application (call wxTreeEvent::SetToolTip). Windows only.}

-\twocolitem{{\bf EVT\_TREE\_ITEM\_MENU(id, func)}}{The menu key has been pressed, asking for a context menu for the selected item.}
+\twocolitem{{\bf EVT\_TREE\_ITEM\_MENU(id, func)}}{The context menu for the selected item has been requested, either by a right click or by using the menu key.}
+\twocolitem{{\bf EVT\_TREE\_STATE\_IMAGE\_CLICK(id, func)}}{The state image has been clicked. Windows only.}

 \end{twocollist}
 
 \wxheading{See also}
 \end{twocollist}
 
 \wxheading{See also}


@@ -107,10 +117,9 @@ wxTreeCtrl class uses the standard common treeview control under Win32
 implemented in the system library {\tt comctl32.dll}. Some versions of this
 library are known to have bugs with handling the tree control colours: the
 usual symptom is that the expanded items leave black (or otherwise incorrectly
 implemented in the system library {\tt comctl32.dll}. Some versions of this
 library are known to have bugs with handling the tree control colours: the
 usual symptom is that the expanded items leave black (or otherwise incorrectly

-coloured) background behind them, especially for the controls using non
-default background colour. The recommended solution is to upgrade the {\tt comctl32.dll}
-to a newer version: see 
-\urlref{http://www.microsoft.com/msdownload/ieplatform/ie/comctrlx86.asp}{http://www.microsoft.com/msdownload/ieplatform/ie/comctrlx86.asp}.
+coloured) background behind them, especially for the controls using non-default background colour. The recommended solution is to upgrade the {\tt comctl32.dll}
+to a newer version: see
+\urlref{http://www.microsoft.com/downloads/release.asp?ReleaseID=11916}{http://www.microsoft.com/downloads/release.asp?ReleaseID=11916}.

 
 \latexignore{\rtfignore{\wxheading{Members}}}
 
 
 \latexignore{\rtfignore{\wxheading{Members}}}
 


@@ -123,7 +132,7 @@ Default constructor.
 
 \func{}{wxTreeCtrl}{\param{wxWindow*}{ parent}, \param{wxWindowID}{ id},\rtfsp
 \param{const wxPoint\&}{ pos = wxDefaultPosition}, \param{const wxSize\&}{ size = wxDefaultSize},\rtfsp
 
 \func{}{wxTreeCtrl}{\param{wxWindow*}{ parent}, \param{wxWindowID}{ id},\rtfsp
 \param{const wxPoint\&}{ pos = wxDefaultPosition}, \param{const wxSize\&}{ size = wxDefaultSize},\rtfsp

-\param{long}{ style = wxTR\_HAS\_BUTTONS}, \param{const wxValidator\& }{validator = wxDefaultValidator}, \param{const wxString\& }{name = ``listCtrl"}}
+\param{long}{ style = wxTR\_HAS\_BUTTONS}, \param{const wxValidator\& }{validator = wxDefaultValidator}, \param{const wxString\& }{name = ``treeCtrl"}}

 
 Constructor, creating and showing a tree control.
 
 
 Constructor, creating and showing a tree control.
 


@@ -153,7 +162,7 @@ appropriately.}
 
 \func{void}{\destruct{wxTreeCtrl}}{\void}
 
 
 \func{void}{\destruct{wxTreeCtrl}}{\void}
 

-Destructor, destroying the list control.
+Destructor, destroying the tree control.

 
 
 \membersection{wxTreeCtrl::AddRoot}\label{wxtreectrladdroot}
 
 
 \membersection{wxTreeCtrl::AddRoot}\label{wxtreectrladdroot}


@@ -231,6 +240,28 @@ See also \helpref{SetStateImageList}{wxtreectrlsetstateimagelist}.
 Collapses the given item.
 
 
 Collapses the given item.
 
 

+\membersection{wxTreeCtrl::CollapseAll}\label{wxtreectrlcollapseall}
+
+\func{void}{CollapseAll}{\void}
+
+Collapses the root item.
+
+\wxheading{See also}
+
+\helpref{ExpandAll}{wxtreectrlexpandall}
+
+
+\membersection{wxTreeCtrl::CollapseAllChildren}\label{wxtreectrlcollapseallchildren}
+
+\func{void}{CollapseAllChildren}{\param{const wxTreeItemId\&}{ item}}
+
+Collapses this item and all of its children, recursively.
+
+\wxheading{See also}
+
+\helpref{ExpandAllChildren}{wxtreectrlexpandallchildren}
+
+

 \membersection{wxTreeCtrl::CollapseAndReset}\label{wxtreectrlcollapseandreset}
 
 \func{void}{CollapseAndReset}{\param{const wxTreeItemId\&}{ item}}
 \membersection{wxTreeCtrl::CollapseAndReset}\label{wxtreectrlcollapseandreset}
 
 \func{void}{CollapseAndReset}{\param{const wxTreeItemId\&}{ item}}


@@ -242,7 +273,7 @@ Collapses the given item and removes all children.
 
 \func{bool}{wxTreeCtrl}{\param{wxWindow*}{ parent}, \param{wxWindowID}{ id},\rtfsp
 \param{const wxPoint\&}{ pos = wxDefaultPosition}, \param{const wxSize\&}{ size = wxDefaultSize},\rtfsp
 
 \func{bool}{wxTreeCtrl}{\param{wxWindow*}{ parent}, \param{wxWindowID}{ id},\rtfsp
 \param{const wxPoint\&}{ pos = wxDefaultPosition}, \param{const wxSize\&}{ size = wxDefaultSize},\rtfsp

-\param{long}{ style = wxTR\_HAS\_BUTTONS}, \param{const wxValidator\& }{validator = wxDefaultValidator}, \param{const wxString\& }{name = ``listCtrl"}}
+\param{long}{ style = wxTR\_HAS\_BUTTONS}, \param{const wxValidator\& }{validator = wxDefaultValidator}, \param{const wxString\& }{name = ``treeCtrl"}}

 
 Creates the tree control. See \helpref{wxTreeCtrl::wxTreeCtrl}{wxtreectrlconstr} for further details.
 
 
 Creates the tree control. See \helpref{wxTreeCtrl::wxTreeCtrl}{wxtreectrlconstr} for further details.
 


@@ -261,7 +292,7 @@ This function may cause a subsequent call to GetNextChild to fail.
 
 \func{void}{DeleteAllItems}{\void}
 
 
 \func{void}{DeleteAllItems}{\void}
 

-Deletes all the items in the control. Note that this may not generate 
+Deletes all items in the control. Note that this may not generate

 {\tt EVT\_TREE\_DELETE\_ITEM} events under some Windows versions although
 normally such event is generated for each removed item.
 
 {\tt EVT\_TREE\_DELETE\_ITEM} events under some Windows versions although
 normally such event is generated for each removed item.
 


@@ -271,7 +302,7 @@ normally such event is generated for each removed item.
 \func{void}{DeleteChildren}{\param{const wxTreeItemId\& }{item}}
 
 Deletes all children of the given item (but not the item itself). Note that
 \func{void}{DeleteChildren}{\param{const wxTreeItemId\& }{item}}
 
 Deletes all children of the given item (but not the item itself). Note that

-this will {\bf not} generate any events unlike 
+this will {\bf not} generate any events unlike

 \helpref{Delete}{wxtreectrldelete} method.
 
 If you have called \helpref{wxTreeCtrl::SetItemHasChildren}{wxtreectrlsetitemhaschildren}, you
 \helpref{Delete}{wxtreectrldelete} method.
 
 If you have called \helpref{wxTreeCtrl::SetItemHasChildren}{wxtreectrlsetitemhaschildren}, you


@@ -324,6 +355,20 @@ Scrolls and/or expands items to ensure that the given item is visible.
 Expands the given item.
 
 
 Expands the given item.
 
 

+\membersection{wxTreeCtrl::ExpandAll}\label{wxtreectrlexpandall}
+
+\func{void}{ExpandAll}{\void}
+
+Expands all items in the tree.
+
+
+\membersection{wxTreeCtrl::ExpandAllChildren}\label{wxtreectrlexpandallchildren}
+
+\func{void}{ExpandAllChildren}{\param{const wxTreeItemId\&}{ item}}
+
+Expands the given item and all its children recursively.
+
+

 \membersection{wxTreeCtrl::GetBoundingRect}\label{wxtreectrlgetitemrect}
 
 \constfunc{bool}{GetBoundingRect}{\param{const wxTreeItemId\&}{ item}, \param{wxRect\& }{rect}, \param{bool }{textOnly = {\tt false}}}
 \membersection{wxTreeCtrl::GetBoundingRect}\label{wxtreectrlgetitemrect}
 
 \constfunc{bool}{GetBoundingRect}{\param{const wxTreeItemId\&}{ item}, \param{wxRect\& }{rect}, \param{bool }{textOnly = {\tt false}}}


@@ -333,14 +378,18 @@ only the rectangle around the item's label will be returned, otherwise the
 item's image is also taken into account.
 
 The return value is {\tt true} if the rectangle was successfully retrieved or {\tt false}
 item's image is also taken into account.
 
 The return value is {\tt true} if the rectangle was successfully retrieved or {\tt false}

-if it was not (in this case {\it rect} is not changed) - for example, if the
+if it was not (in this case {\it rect} is not changed) -- for example, if the

 item is currently invisible.
 
 item is currently invisible.
 

+Notice that the rectangle coordinates are logical, not physical ones. So, for
+example, the x coordinate may be negative if the tree has a horizontal
+scrollbar and its position is not $0$.
+

 \pythonnote{The wxPython version of this method requires only the
 {\tt item} and {\tt textOnly} parameters.  The return value is either a
 {\tt wxRect} object or {\tt None}.}
 
 \pythonnote{The wxPython version of this method requires only the
 {\tt item} and {\tt textOnly} parameters.  The return value is either a
 {\tt wxRect} object or {\tt None}.}
 

-\perlnote{In wxPerl this method only takes the parameters {\tt item} and 
+\perlnote{In wxPerl this method only takes the parameters {\tt item} and

   {\tt textOnly}, and returns a Wx::Rect ( or undef ).}
 
 
   {\tt textOnly}, and returns a Wx::Rect ( or undef ).}
 
 


@@ -355,7 +404,7 @@ This function is only available in the generic version.
 
 \membersection{wxTreeCtrl::GetChildrenCount}\label{wxtreectrlgetchildrencount}
 
 
 \membersection{wxTreeCtrl::GetChildrenCount}\label{wxtreectrlgetchildrencount}
 

-\constfunc{size\_t}{GetChildrenCount}{\param{const wxTreeItemId\&}{ item}, \param{bool}{ recursively = {\tt true}}}
+\constfunc{unsigned int}{GetChildrenCount}{\param{const wxTreeItemId\&}{ item}, \param{bool}{ recursively = {\tt true}}}

 
 Returns the number of items in the branch. If {\it recursively} is {\tt true}, returns the total number
 of descendants, otherwise only one level of children is counted.
 
 Returns the number of items in the branch. If {\it recursively} is {\tt true}, returns the total number
 of descendants, otherwise only one level of children is counted.


@@ -363,7 +412,7 @@ of descendants, otherwise only one level of children is counted.
 
 \membersection{wxTreeCtrl::GetCount}\label{wxtreectrlgetcount}
 
 
 \membersection{wxTreeCtrl::GetCount}\label{wxtreectrlgetcount}
 

-\constfunc{int}{GetCount}{\void}
+\constfunc{unsigned int}{GetCount}{\void}

 
 Returns the number of items in the control.
 
 
 Returns the number of items in the control.
 


@@ -564,19 +613,6 @@ Returns the next visible item.
 Returns the item's parent.
 
 
 Returns the item's parent.
 
 

-\membersection{wxTreeCtrl::GetParent}\label{wxtreectrlgetparent}
-
-\constfunc{wxTreeItemId}{GetParent}{\param{const wxTreeItemId\&}{ item}}
-
-{\bf NOTE:} This function is deprecated and will only work if {\tt WXWIN\_COMPATIBILITY\_2\_2}
-is defined.  Use \helpref{wxTreeCtrl::GetItemParent}{wxtreectrlgetitemparent} instead.
-
-Returns the item's parent.
-
-\pythonnote{This method is named {\tt GetItemParent} to avoid a name
-clash with wxWindow::GetParent.}
-
-

 \membersection{wxTreeCtrl::GetPrevSibling}\label{wxtreectrlgetprevsibling}
 
 \constfunc{wxTreeItemId}{GetPrevSibling}{\param{const wxTreeItemId\&}{ item}}
 \membersection{wxTreeCtrl::GetPrevSibling}\label{wxtreectrlgetprevsibling}
 
 \constfunc{wxTreeItemId}{GetPrevSibling}{\param{const wxTreeItemId\&}{ item}}


@@ -597,6 +633,18 @@ Returns an invalid tree item if there are no further children.
 Returns the previous visible item.
 
 
 Returns the previous visible item.
 
 

+\membersection{wxTreeCtrl::GetQuickBestSize}\label{wxtreectrlgetquickbestsize}
+
+\constfunc{bool}{GetQuickBestSize}{\void}
+
+Returns true if the control will use a quick calculation for the best size,
+looking only at the first and last items. The default is false.
+
+\wxheading{See also}
+
+\helpref{wxTreeCtrl::SetQuickBestSize}{wxtreectrlsetquickbestsize}
+
+

 \membersection{wxTreeCtrl::GetRootItem}\label{wxtreectrlgetrootitem}
 
 \constfunc{wxTreeItemId}{GetRootItem}{\void}
 \membersection{wxTreeCtrl::GetRootItem}\label{wxtreectrlgetrootitem}
 
 \constfunc{wxTreeItemId}{GetRootItem}{\void}


@@ -624,7 +672,7 @@ this style.
 
 \membersection{wxTreeCtrl::GetSelections}\label{wxtreectrlgetselections}
 
 
 \membersection{wxTreeCtrl::GetSelections}\label{wxtreectrlgetselections}
 

-\constfunc{size\_t}{GetSelections}{\param{wxArrayTreeItemIds\& }{selection}}
+\constfunc{unsigned int}{GetSelections}{\param{wxArrayTreeItemIds\& }{selection}}

 
 Fills the array of tree items passed in with the currently selected items. This
 function can be called only if the control has the wxTR\_MULTIPLE style.
 
 Fills the array of tree items passed in with the currently selected items. This
 function can be called only if the control has the wxTR\_MULTIPLE style.


@@ -647,7 +695,7 @@ Returns the state image list (from which application-defined state images are ta
 
 \membersection{wxTreeCtrl::HitTest}\label{wxtreectrlhittest}
 
 
 \membersection{wxTreeCtrl::HitTest}\label{wxtreectrlhittest}
 

-\func{wxTreeItemId}{HitTest}{\param{const wxPoint\& }{point}, \param{int\& }{flags}}
+\constfunc{wxTreeItemId}{HitTest}{\param{const wxPoint\& }{point}, \param{int\& }{flags}}

 
 Calculates which (if any) item is under the given point, returning the tree item
 id at this point plus extra information {\it flags}. {\it flags} is a bitlist of the following:
 
 Calculates which (if any) item is under the given point, returning the tree item
 id at this point plus extra information {\it flags}. {\it flags} is a bitlist of the following:


@@ -704,6 +752,13 @@ Returns {\tt true} if the given item is in bold state.
 See also: \helpref{SetItemBold}{wxtreectrlsetitembold}
 
 
 See also: \helpref{SetItemBold}{wxtreectrlsetitembold}
 
 

+\membersection{wxTreeCtrl::IsEmpty}\label{wxtreectrlisempty}
+
+\constfunc{bool}{IsEmpty}{}
+
+Returns \true if the control is empty (i.e. has no items, even no root one).
+
+

 \membersection{wxTreeCtrl::IsExpanded}\label{wxtreectrlisexpanded}
 
 \constfunc{bool}{IsExpanded}{\param{const wxTreeItemId\&}{ item}}
 \membersection{wxTreeCtrl::IsExpanded}\label{wxtreectrlisexpanded}
 
 \constfunc{bool}{IsExpanded}{\param{const wxTreeItemId\&}{ item}}


@@ -741,7 +796,12 @@ items in the tree control. The function should return a negative, zero or
 positive value if the first item is less than, equal to or greater than the
 second one.
 
 positive value if the first item is less than, equal to or greater than the
 second one.
 

-The base class version compares items alphabetically.
+Please note that you \textbf{must} use wxRTTI macros 
+\helpref{DECLARE\_DYNAMIC\_CLASS}{declaredynamicclass} and 
+\helpref{IMPLEMENT\_DYNAMIC\_CLASS}{implementdynamicclass} if you override this
+function because otherwise the base class considers that it is not overridden
+and uses the default comparison, i.e. sorts the items alphabetically, which
+allows it optimize away the calls to the virtual function completely.

 
 See also: \helpref{SortChildren}{wxtreectrlsortchildren}
 
 
 See also: \helpref{SortChildren}{wxtreectrlsortchildren}
 


@@ -769,7 +829,7 @@ Scrolls the specified item into view.
 
 \membersection{wxTreeCtrl::SelectItem}\label{wxtreectrlselectitem}
 
 
 \membersection{wxTreeCtrl::SelectItem}\label{wxtreectrlselectitem}
 

-\func{bool}{SelectItem}{\param{const wxTreeItemId\&}{ item}, \param{bool }{select = \true}}
+\func{void}{SelectItem}{\param{const wxTreeItemId\&}{ item}, \param{bool }{select = \true}}

 
 Selects the given item. In multiple selection controls, can be also used to
 deselect a currently selected item if the value of \arg{select} is false.
 
 Selects the given item. In multiple selection controls, can be also used to
 deselect a currently selected item if the value of \arg{select} is false.


@@ -911,6 +971,19 @@ Sets the item label.
 Sets the colour of the item's text.
 
 
 Sets the colour of the item's text.
 
 

+\membersection{wxTreeCtrl::SetQuickBestSize}\label{wxtreectrlsetquickbestsize}
+
+\func{void}{SetQuickBestSize}{\param{bool}{ quickBestSize}}
+
+If true is passed, specifies that the control will use a quick calculation for the best size,
+looking only at the first and last items. Otherwise, it will look at all items.
+The default is false.
+
+\wxheading{See also}
+
+\helpref{wxTreeCtrl::GetQuickBestSize}{wxtreectrlgetquickbestsize}
+
+

 \membersection{wxTreeCtrl::SetStateImageList}\label{wxtreectrlsetstateimagelist}
 
 \func{void}{SetStateImageList}{\param{wxImageList*}{ imageList}}
 \membersection{wxTreeCtrl::SetStateImageList}\label{wxtreectrlsetstateimagelist}
 
 \func{void}{SetStateImageList}{\param{wxImageList*}{ imageList}}


@@ -982,3 +1055,62 @@ all items if it does have this style.
 Unselects the given item. This works in multiselection controls only.
 
 
 Unselects the given item. This works in multiselection controls only.
 
 

+
+
+
+%% the wxTreeItemId opaque class
+
+
+\section{\class{wxTreeItemId}}\label{wxtreeitemid}
+
+An opaque reference to a tree item.
+
+
+\wxheading{Derived from}
+
+None
+
+\wxheading{Include files}
+
+<wx/treebase.h>
+
+\wxheading{Library}
+
+\helpref{wxCore}{librarieslist}
+
+\wxheading{See also}
+
+\helpref{wxTreeCtrl}{wxtreectrl}, \helpref{wxTreeItemData}{wxtreeitemdata},\\
+\helpref{wxTreeCtrl overview}{wxtreectrloverview}
+
+
+\latexignore{\rtfignore{\wxheading{Members}}}
+
+\membersection{wxTreeItemId::wxTreeItemId}\label{wxtreeitemidconstr}
+
+\func{}{wxTreeItemId}{\void}
+
+Default constructor. wxTreemItemIds are not meant to be constructed explicitly by
+the user; they are returned by the \helpref{wxTreeCtrl}{wxtreectrl} functions instead.
+
+
+\membersection{wxTreeItemId::IsOk}\label{wxtreeitemidisok}
+
+\constfunc{bool}{IsOk}{}
+
+Returns \true if this instance is referencing a valid tree item.
+
+
+\membersection{Operators}\label{wxtreeitemidoperators}
+
+\constfunc{void}{operator $!$}{}
+
+Synonim for \helpref{IsOk}{wxtreeitemidisok}
+
+
+\constfunc{bool}{operator $==$}{\param{const wxTreeItemId\& }{item}}
+
+\constfunc{bool}{operator $!=$}{\param{const wxTreeItemId\& }{item}}
+
+Operators for comparison between \helpref{wxTreeItemId}{wxtreeitemid} objects.
+