interface hypertext : widget { hypertext(char* path); hypertext(widget* parent, char* path); void configure( char* cmd ); void file( char* name ); };A hypertext widget, as any other widget of the hush widget library, can be created from an absolute path name (as in Tk) or, relative to a parent widget, with a path extending the path of the parent widget. The hypertext widget allows for a number of configuration commands, for setting font size, background, foreground and the like.
A typical hypertext file is shown below:
Rubber banding: press the left mouse button and release when the rectangle is of appropriate size %% drawtool $this.draw $this.tool create rectangle 10 30 70 90 $this append $this.tool %% For additional information click on the %% button $this.navigate -text instruction -command end-of-text $this append $this.navigate %% button.
%%
brackets is evaluated and results in an instance of
the drawtool widget, which is defined by the
application (and briefly discussed in section Drawtool).
The embedded widgets must me defined relative to the
hypertext widget, by referring to the (widget) variable
this
.
The drawtool widget is surrounded by
text which contains an additional button for navigation.