undefine _DEFINE_LIST before redefining it; also rename it to have WX prefix

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

diff --git a/docs/latex/wx/ttreectl.tex b/docs/latex/wx/ttreectl.tex
index 30847cf1d9f5d871d62b9486742b54fcdeafec98..93bc9daf50a74cfd3a8952f61ff09724e822f46b 100644 (file)
--- a/docs/latex/wx/ttreectl.tex
+++ b/docs/latex/wx/ttreectl.tex
@@ -6,7 +6,8 @@ The tree control displays its items in a tree like structure. Each item has its
 own (optional) icon and a label. An item may be either collapsed (meaning that
 its children are not visible) or expanded (meaning that its children are
 shown). Each item in the tree is identified by its {\it itemId} which is of
-opaque data type {\it wxTreeItemId}.
+opaque data type {\it wxTreeItemId}. You can test whether an item is valid
+by calling wxTreeItemId::IsOk.
 
 The items text and image may be retrieved and changed with 
 \helpref{GetItemText}{wxtreectrlgetitemtext}/\helpref{SetItemText}{wxtreectrlsetitemtext} 
@@ -75,6 +76,6 @@ Finally, the tree control has a keyboard interface: the cursor navigation (arrow
 may be used to change the current selection. <HOME> and <END> are used to go to
 the first/last sibling of the current item. '+', '-' and '*' expand, collapse
 and toggle the current branch. Note, however, that <DEL> and <INS> keys do
-nothing by default, but it is usual to associate them with deleting item from
+nothing by default, but it is common to associate them with deleting an item from
 a tree and inserting a new one into it.