added the mention of library in which each class is defined to the documentation (patch 1756715)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@47777 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

docs/latex/wx/filepicker.tex

@@ -28,6 +28,10 @@ It is only available if \texttt{wxUSE\_FILEPICKERCTRL} is set to $1$ (the defaul
 
 <wx/filepicker.h>
 
+\wxheading{Library}
+
+\helpref{wxCore}{librarieslist}
+
 \wxheading{Window styles}
 
 \twocolwidtha{5cm}%
@@ -177,6 +181,10 @@ This event class is used for the events generated by
 
 <wx/filepicker.h>
 
+\wxheading{Library}
+
+\helpref{wxCore}{librarieslist}
+
 \wxheading{Event handling}
 
 To process input from a wxFilePickerCtrl or from a wxDirPickerCtrl, use one of these event handler macros to