finds tk as well

Modules/FindTCL.cmake

@@ -6,6 +6,9 @@
 #  TCL_LIB_PATH     = the path to where the TCL library is
 #  TCL_LIBRARY      = the name of the tcl library found (tcl tcl80 etc)
 #  TCL_INCLUDE_PATH = the path to where tcl.h can be found
+#  TK_LIB_PATH      = the path to where the TK library is
+#  TK_LIBRARY       = the name of the tk library found (tk tk80 etc)
+#  TK_INCLUDE_PATH  = the path to where tk.h can be found
 #
 # 
 
@@ -31,5 +34,28 @@ IF (NOT TCL_LIB_PATH)
   ENDIF (TCL_LIB_PATH)
 ENDIF (NOT TCL_LIB_PATH)
 
+# try to find the Tk libraries in a few places and names
+IF (NOT TK_LIB_PATH)
+  FIND_LIBRARY(TK_LIB_PATH tk "C:/Program Files/Tcl/lib" /usr/lib /usr/local/lib)
+  IF (TK_LIB_PATH)
+    SET (TK_LIBRARY tk CACHE)
+  ENDIF (TK_LIB_PATH)
+ENDIF (NOT TK_LIB_PATH)
+
+IF (NOT TK_LIB_PATH)
+  FIND_LIBRARY(TK_LIB_PATH tk82 "C:/Program Files/Tcl/lib" /usr/lib /usr/local/lib)
+  IF (TK_LIB_PATH)
+    SET (TK_LIBRARY tk82 CACHE)
+  ENDIF (TK_LIB_PATH)
+ENDIF (NOT TK_LIB_PATH)
+
+IF (NOT TK_LIB_PATH)
+  FIND_LIBRARY(TK_LIB_PATH tk80 "C:/Program Files/Tcl/lib" /usr/lib /usr/local/lib)
+  IF (TK_LIB_PATH)
+    SET (TK_LIBRARY tk80 CACHE)
+  ENDIF (TK_LIB_PATH)
+ENDIF (NOT TK_LIB_PATH)
+
 # add in the include path    
-FIND_PATH(TCL_INCLUDE_PATH tcl.h /usr/include /usr/local/include)
+FIND_PATH(TCL_INCLUDE_PATH tcl.h "C:/Program Files/Tcl/include" /usr/include /usr/local/include)
+FIND_PATH(TK_INCLUDE_PATH tk.h "C:/Program Files/Tcl/include" /usr/include /usr/local/include)