STR #1467: explained tooltip inheritance - and how to avoid it).

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.1@5552 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

CHANGES

@@ -1,5 +1,6 @@
 CHANGES IN FLTK 1.1.8
 
+	- Documented tooltip inheritance (STR #1467)
 	- Better event mouse handling fixing detached menus and
 	  sticky tooltips (STR #1463, STR #449)
 	- Documentation fixes (STR #1454, STR #1455, STR #1456,

documentation/Fl_Widget.html

@@ -470,6 +470,11 @@ window when the user hovers the mouse over the widget. The
 string is <I>not</I> copied, so make sure any formatted string
 is stored in a <TT>static</TT>, global, or allocated buffer.
 
+<P>If no tooltip is set, the tooltip of the parent is inherited.
+Setting a tooltip for a group and setting no tooltip for a child 
+will show the group's tooltip instead. To avoid this behavior, 
+you can set the child's tooltip to an empty string 
+(<tt>&quot;&quot;</tt>).
 
 <H4><A NAME="Fl_Widget.type">uchar Fl_Widget::type() const;</A></H4>
 

test/tabs.fl

@@ -11,19 +11,20 @@ Function {} {open
       tooltip {the various index cards test different aspects of the Fl_Tabs widget} xywh {10 10 300 200} selection_color 4 labelcolor 7 resizable
     } {
       Fl_Group {} {
-        label Label1 open selected
+        label Label1 open
         tooltip {this Tab tests correct keyboard navigation between text input fields} xywh {10 30 300 180} selection_color 1 resizable
       } {
         Fl_Input {} {
           label {input:}
-          xywh {60 50 240 40}
+          tooltip {This is the first input field} xywh {60 50 240 40}
         }
         Fl_Input {} {
           label {input2:}
           xywh {60 90 240 30}
+          code0 {o->tooltip("");}
         }
         Fl_Input {} {
-          label {input3:}
+          label {input3:} selected
           xywh {60 120 240 80}
         }
       }