ENH: first stab at wxWindows support (win32)

Modules/FindwxWindows.cmake

+#
+# This module finds if wxWindows is installed and determines where the
+# include files and libraries are. It also determines what the name of
+# the library is. This code sets the following variables:
+#
+#  WXWINDOWS_STATIC_LIBRARY  = full path to the wxWindows static library
+#  WXWINDOWS_SHARED_LIBRARY  = full path to the wxWindows shared import library
+#  WXWINDOWS_INCLUDE_PATH    = path to wx.h
+
+SET (WXWINDOWS_POSSIBLE_LIB_PATHS
+  "[HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\wxWindows_is1;Inno Setup: App Path]/lib"
+  $ENV{WXWIN}/lib
+)
+
+FIND_LIBRARY(WXWINDOWS_STATIC_LIBRARY
+  NAMES wx
+  PATHS ${WXWINDOWS_POSSIBLE_LIB_PATHS} 
+)
+
+FIND_LIBRARY(WXWINDOWS_SHARED_LIBRARY
+  NAMES wx23_2 wx22_9
+  PATHS ${WXWINDOWS_POSSIBLE_LIB_PATHS} 
+)
+
+SET (WXWINDOWS_POSSIBLE_INCLUDE_PATHS
+  "[HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\wxWindows_is1;Inno Setup: App Path]/include/wx"
+  $ENV{WXWIN}/include/wx
+)
+
+FIND_PATH(WXWINDOWS_INCLUDE_PATH
+  wx.h
+  ${WXWINDOWS_POSSIBLE_INCLUDE_PATHS} 
+)
+
+MARK_AS_ADVANCED(
+  WXWINDOWS_STATIC_LIBRARY
+  WXWINDOWS_SHARED_LIBRARY
+  WXWINDOWS_INCLUDE_PATH
+)