Check buttons did not redraw properly with box() set to FL_NO_BOX

(STR #1440)

src/Fl_Button.cxx:
    - Fl_Button::value(): Use redraw_label() if box() is not set.


git-svn-id: file:///fltk/svn/fltk/branches/branch-1.1@5482 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

CHANGES

@@ -1,5 +1,7 @@
 CHANGES IN FLTK 1.1.8
 
+	- Check buttons did not redraw properly with box() set to
+	  FL_NO_BOX (STR #1440)
 	- Added the Bluecurve-inspired scheme "gtk+".
 	- Implemented alpha blending for WIN32
 	- Updated documentation (STR #1420, STR #1421)

src/Fl_Button.cxx

@@ -40,7 +40,8 @@ int Fl_Button::value(int v) {
   clear_changed();
   if (value_ != v) {
     value_ = v;
-    redraw();
+    if (box()) redraw();
+    else redraw_label();
     return 1;
   } else {
     return 0;