\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.
+to show further items. Items in a tree control are referenced by wxTreeItemId handles,
+which may be tested for validity by calling wxTreeItemId::IsOk.
To intercept events from a tree control, use the event table macros described in \helpref{wxTreeEvent}{wxtreeevent}.
\twocolitem{{\bf EVT\_TREE\_SEL\_CHANGED(id, func)}}{Selection has changed.}
\twocolitem{{\bf EVT\_TREE\_SEL\_CHANGING(id, func)}}{Selection is changing. This can be prevented by calling \helpref{Veto()}{wxnotifyeventveto}.}
\twocolitem{{\bf EVT\_TREE\_KEY\_DOWN(id, func)}}{A key has been pressed.}
-\end{twocollist}%
+\end{twocollist}
\wxheading{See also}
\wxheading{Parameters}
-\docparam{parent}{Parent window. Must not be NULL.}
+\docparam{parent}{Parent window. Must not be {\tt NULL}.}
\docparam{id}{Window identifier. A value of -1 indicates a default value.}
\membersection{wxTreeCtrl::AddRoot}\label{wxtreectrladdroot}
\func{wxTreeItemId}{AddRoot}{\param{const wxString\&}{ text},
- \param{int}{ image = -1}, \param{int}{ selImage = -1}, \param{wxTreeItemData*}{ data = NULL}}
+ \param{int}{ image = -1}, \param{int}{ selImage = -1}, \param{wxTreeItemData*}{ data = {\tt NULL}}}
Adds the root node to the tree, returning the new item.
\membersection{wxTreeCtrl::AppendItem}\label{wxtreectrlappenditem}
\func{wxTreeItemId}{AppendItem}{\param{const wxTreeItemId\& }{parent}, \param{const wxString\&}{ text},
- \param{int}{ image = -1}, \param{int}{ selImage = -1}, \param{wxTreeItemData*}{ data = NULL}}
+ \param{int}{ image = -1}, \param{int}{ selImage = -1}, \param{wxTreeItemData*}{ data = {\tt NULL}}}
Appends an item to the end of the branch identified by {\it parent}, return a new item id.
Setting or assigning the button image list enables the display of image buttons.
Once enabled, the only way to disable the display of button images is to set
-the button image list to NULL.
+the button image list to {\tt NULL}.
This function is only available in the generic version.
\func{void}{Delete}{\param{const wxTreeItemId\&}{ item}}
-Deletes the specified item.
+Deletes the specified item. A {\tt EVT\_TREE\_DELETE\_ITEM} event will be
+generated.
+
+This function may cause a subsequent call to GetNextChild to fail.
\membersection{wxTreeCtrl::DeleteAllItems}\label{wxtreectrldeleteallitems}
\func{void}{DeleteAllItems}{\void}
-Deletes all the items in the control.
+Deletes all the 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.
+
+\membersection{wxTreeCtrl::DeleteChildren}\label{wxtreectrldeletechildren}
+
+\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
+\helpref{Delete}{wxtreectrldelete} method.
+
+If you have called \helpref{wxTreeCtrl::SetItemHasChildren}{wxtreectrlsetitemhaschildren}, you
+may need to call it again since {\it DeleteChildren} does not automatically
+clear the setting.
\membersection{wxTreeCtrl::EditLabel}\label{wxtreectrleditlabel}
\func{void}{EndEditLabel}{\param{bool }{cancelEdit}}
-Ends label editing. If {\it cancelEdit} is TRUE, the edit will be cancelled.
+Ends label editing. If {\it cancelEdit} is {\tt true}, the edit will be cancelled.
This function is currently supported under Windows only.
\membersection{wxTreeCtrl::GetBoundingRect}\label{wxtreectrlgetitemrect}
-\constfunc{bool}{GetBoundingRect}{\param{const wxTreeItemId\&}{ item}, \param{wxRect\& }{rect}, \param{bool }{textOnly = FALSE}}
+\constfunc{bool}{GetBoundingRect}{\param{const wxTreeItemId\&}{ item}, \param{wxRect\& }{rect}, \param{bool }{textOnly = {\tt false}}}
-Retrieves the rectangle bounding the {\it item}. If {\it textOnly} is TRUE,
+Retrieves the rectangle bounding the {\it item}. If {\it textOnly} is {\tt true},
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 TRUE if the rectangle was successfully retrieved or FALSE
+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
item is currently invisible.
\membersection{wxTreeCtrl::GetChildrenCount}\label{wxtreectrlgetchildrencount}
-\constfunc{size\_t}{GetChildrenCount}{\param{const wxTreeItemId\&}{ item}, \param{bool}{ recursively = TRUE}}
+\constfunc{size\_t}{GetChildrenCount}{\param{const wxTreeItemId\&}{ item}, \param{bool}{ recursively = {\tt true}}}
-Returns the number of items in the branch. If {\it recursively} is TRUE, returns the total number
+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.
\membersection{wxTreeCtrl::GetCount}\label{wxtreectrlgetcount}
\membersection{wxTreeCtrl::GetEditControl}\label{wxtreectrlgeteditcontrol}
-\constfunc{wxTextCtrl\&}{GetEditControl}{\void}
+\constfunc{wxTextCtrl *}{GetEditControl}{\void}
-Returns the edit control used to edit a label.
+Returns the edit control being currently used to edit a label. Returns {\tt NULL}
+if no label is being edited.
+
+{\bf NB:} It is currently only implemented for wxMSW.
\membersection{wxTreeCtrl::GetFirstChild}\label{wxtreectrlgetfirstchild}
which is opaque for the application but is necessary for the library
to make these functions reentrant (i.e. allow more than one
enumeration on one and the same object simultaneously). The cookie passed to
-GetFirstChild and GetNextChild should be the same.
+GetFirstChild and GetNextChild should be the same variable.
Returns an invalid tree item if there are no further children.
\wxheading{See also}
-\helpref{wxTreeCtrl::GetNextChild}{wxtreectrlgetnextchild}
+\helpref{wxTreeCtrl::GetNextChild}{wxtreectrlgetnextchild},
+\helpref{wxTreeCtrl::GetNextSibling}{wxtreectrlgetnextsibling}
\pythonnote{In wxPython the returned wxTreeItemId and the new cookie
value are both returned as a tuple containing the two values.}
Returns the current tree control indentation.
+\membersection{wxTreeCtrl::GetItemBackgroundColour}\label{wxtreectrlgetitembackgroundcolour}
+
+\constfunc{wxColour}{GetItemBackgroundColour}{\param{const wxTreeItemId\&}{ item}}
+
+Returns the background colour of the item.
+
\membersection{wxTreeCtrl::GetItemData}\label{wxtreectrlgetitemdata}
\constfunc{wxTreeItemData*}{GetItemData}{\param{const wxTreeItemId\&}{ item}}
\end{twocollist}}
}
+\membersection{wxTreeCtrl::GetItemFont}\label{wxtreectrlgetitemfont}
+
+\constfunc{wxFont}{GetItemFont}{\param{const wxTreeItemId\&}{ item}}
+
+Returns the font of the item label.
+
\membersection{wxTreeCtrl::GetItemImage}\label{wxtreectrlgetitemimage}
\constfunc{int}{GetItemImage}{\param{const wxTreeItemId\& }{item},
Returns the item label.
+\membersection{wxTreeCtrl::GetItemTextColour}\label{wxtreectrlgetitemtextcolour}
+
+\constfunc{wxColour}{GetItemTextColour}{\param{const wxTreeItemId\&}{ item}}
+
+Returns the colour of the item label.
+
\membersection{wxTreeCtrl::GetLastChild}\label{wxtreectrlgetlastchild}
\constfunc{wxTreeItemId}{GetLastChild}{\param{const wxTreeItemId\&}{ item}}
\wxheading{See also}
\helpref{GetFirstChild}{wxtreectrlgetfirstchild},
+\helpref{wxTreeCtrl::GetNextSibling}{wxtreectrlgetnextsibling},
\helpref{GetLastChild}{wxtreectrlgetlastchild}
\membersection{wxTreeCtrl::GetNextChild}\label{wxtreectrlgetnextchild}
Returns the next visible item.
+\membersection{wxTreeCtrl::GetItemParent}\label{wxtreectrlgetitemparent}
+
+\constfunc{wxTreeItemId}{GetItemParent}{\param{const wxTreeItemId\&}{ item}}
+
+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
\membersection{wxTreeCtrl::InsertItem}\label{wxtreectrlinsertitem}
\func{wxTreeItemId}{InsertItem}{\param{const wxTreeItemId\& }{parent}, \param{const wxTreeItemId\& }{previous}, \param{const wxString\&}{ text},
- \param{int}{ image = -1}, \param{int}{ selImage = -1}, \param{wxTreeItemData*}{ data = NULL}}
+ \param{int}{ image = -1}, \param{int}{ selImage = -1}, \param{wxTreeItemData*}{ data = {\tt NULL}}}
\func{wxTreeItemId}{InsertItem}{\param{const wxTreeItemId\& }{parent}, \param{size\_t}{ before}, \param{const wxString\&}{ text},
- \param{int}{ image = -1}, \param{int}{ selImage = -1}, \param{wxTreeItemData*}{ data = NULL}}
+ \param{int}{ image = -1}, \param{int}{ selImage = -1}, \param{wxTreeItemData*}{ data = {\tt NULL}}}
Inserts an item after a given one ({\it previous}) or before one identified by its position ({\it before}).
+{\it before} must be less than the number of children.
The {\it image} and {\it selImage} parameters are an index within
the normal image list specifying the image to use for unselected and
\constfunc{bool}{IsBold}{\param{const wxTreeItemId\& }{item}}
-Returns TRUE if the given item is in bold state.
+Returns {\tt true} if the given item is in bold state.
See also: \helpref{SetItemBold}{wxtreectrlsetitembold}
\constfunc{bool}{IsExpanded}{\param{const wxTreeItemId\&}{ item}}
-Returns TRUE if the item is expanded (only makes sense if it has children).
+Returns {\tt true} if the item is expanded (only makes sense if it has children).
\membersection{wxTreeCtrl::IsSelected}\label{wxtreectrlisselected}
\constfunc{bool}{IsSelected}{\param{const wxTreeItemId\&}{ item}}
-Returns TRUE if the item is selected.
+Returns {\tt true} if the item is selected.
\membersection{wxTreeCtrl::IsVisible}\label{wxtreectrlisvisible}
\constfunc{bool}{IsVisible}{\param{const wxTreeItemId\&}{ item}}
-Returns TRUE if the item is visible (it might be outside the view, or not expanded).
+Returns {\tt true} if the item is visible (it might be outside the view, or not expanded).
\membersection{wxTreeCtrl::ItemHasChildren}\label{wxtreectrlitemhaschildren}
\constfunc{bool}{ItemHasChildren}{\param{const wxTreeItemId\&}{ item}}
-Returns TRUE if the item has children.
+Returns {\tt true} if the item has children.
\membersection{wxTreeCtrl::OnCompareItems}\label{wxtreectrloncompareitems}
\membersection{wxTreeCtrl::PrependItem}\label{wxtreectrlprependitem}
\func{wxTreeItemId}{PrependItem}{\param{const wxTreeItemId\& }{parent}, \param{const wxString\&}{ text},
- \param{int}{ image = -1}, \param{int}{ selImage = -1}, \param{wxTreeItemData*}{ data = NULL}}
+ \param{int}{ image = -1}, \param{int}{ selImage = -1}, \param{wxTreeItemData*}{ data = {\tt NULL}}}
Appends an item as the first child of {\it parent}, return a new item id.
Setting or assigning the button image list enables the display of image buttons.
Once enabled, the only way to disable the display of button images is to set
-the button image list to NULL.
+the button image list to {\tt NULL}.
This function is only available in the generic version.
\membersection{wxTreeCtrl::SetItemBold}\label{wxtreectrlsetitembold}
-\func{void}{SetItemBold}{\param{const wxTreeItemId\& }{item}, \param{bool}{ bold = TRUE}}
+\func{void}{SetItemBold}{\param{const wxTreeItemId\& }{item}, \param{bool}{ bold = {\tt true}}}
-Makes item appear in bold font if {\it bold} parameter is TRUE or resets it to
+Makes item appear in bold font if {\it bold} parameter is {\tt true} or resets it to
the normal state.
See also: \helpref{IsBold}{wxtreectrlisbold}
\membersection{wxTreeCtrl::SetItemHasChildren}\label{wxtreectrlsetitemhaschildren}
-\func{void}{SetItemHasChildren}{\param{const wxTreeItemId\&}{ item}, \param{bool }{hasChildren = TRUE}}
+\func{void}{SetItemHasChildren}{\param{const wxTreeItemId\&}{ item}, \param{bool }{hasChildren = {\tt true}}}
Force appearance of the button next to the item. This is useful to
allow the user to expand the items which don't have any children now,
Sorts the children of the given item using
\helpref{OnCompareItems}{wxtreectrloncompareitems} method of wxTreeCtrl. You
should override that method to change the sort order (the default is ascending
-alphabetical order).
+case-sensitive alphabetical order).
\wxheading{See also}
projects / wxWidgets.git / blobdiff