RE: [fltk.general] Fl_Box: hide/show/change image on mouse-over event - [General Use]

[MacArthur, Ian (Leonardo, UK)]

> I'm using a window with a png file as a background. That png file shows
> buttons and I put insivible fltk buttons (actually subclassed Fl_Boxes)
> on top of those buttons.
> Now I want those buttons to become more interactive by putting an image
> of top of them that's only visible when I point with the mouse on it,
> but I can't seem to get it to work right.

> An example: the window shows a hand-drawn red button (part of
> background.png) and I want to highlight it with a lighter red color
> (red_button_highlight.png) when I move the mouse button above it.

> Any ideas?


This is usually done by catching the enter/leave events in the handle method of your "button" widget subclass.

Have you looked at the EnterExit widget in the subwindow.cxx test program - that's probably the simplest example that does what I *think* you are describing.




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