document the functions sending page changing events

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@21743 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

docs/latex/wx/notebook.tex

@@ -85,6 +85,8 @@ Destroys the wxNotebook object.
 
 Adds a new page.
 
+The call to this function may generate the page changing events.
+
 \wxheading{Parameters}
 
 \docparam{page}{Specifies the new page.}
@@ -113,6 +115,8 @@ Do not delete the page, it will be deleted by the notebook.
 
 Cycles through the tabs.
 
+The call to this function generates the page changing events.
+
 \membersection{wxNotebook::AssignImageList}\label{wxnotebookassignimagelist}
 
 \func{void}{AssignImageList}{\param{wxImageList*}{ imageList}}
@@ -145,6 +149,8 @@ Deletes all pages.
 
 Deletes the specified page, and the associated window.
 
+The call to this function generates the page changing events.
+
 \membersection{wxNotebook::GetImageList}\label{wxnotebookgetimagelist}
 
 \constfunc{wxImageList*}{GetImageList}{\void}
@@ -323,6 +329,8 @@ Sets the text for the given page.
 
 Sets the selection for the given page, returning the previous selection.
 
+The call to this function generates the page changing events.
+
 \wxheading{See also}
 
 \helpref{wxNotebook::GetSelection}{wxnotebookgetselection}