> I want do draw a button in FLTK which contains pictures.
>
> If the button is not pressed, the first image should be shown
> in the button. If I press the button, the second picture
> should appear. If I release the Button, the first image
> should be shown again.
>
> Does FLTK (1.1.x) support this directly or do I have to do a
> workarround?
It t akes a bit of fiddling, but there are several ways you can do this.
Rather than try and explain, here's a fluid file that illustrates one
possible approach. There are other ways (probably better ways!) too, of
course.
I'm posting this via Outlook, so there's a fair chance it will be
horribly munged when you get it!
You'll need to provide two small png's for the demo, one called up.png,
the other called dn.png.
---------
# data file for the Fltk User Interface Designer (fluid)
version 1.0109
header_name {.h}
code_name {.cxx}
Function {} {open
} {
Fl_Window {} {open
xywh {523 161 452 401} type Double visible
} {
Fl_Group {} {open
xywh {25 25 300 275} box ENGRAVED_FRAME
} {
Fl_Round_Button b1 {
callback {int i = b1->value();
if(i)
{
b1->image(hidden->image());
b2->image(hidden->deimage());
}
else
{
b1->image(hidden->deimage());
b2->image(hidden->image());
}
b1->redraw();
b2->redraw();}
image {up.png} deimage {dn.png} xywh {50 40 64 45} type Radio
down_box ROUND_DOWN_BOX value 1 when 1
}
Fl_Round_Button b2 {
callback {int i = b1->value();
if(i)
{
b1->image(hidden->image());
b2->image(hidden->deimage());
}
else
{
b1->image(hidden->deimage());
b2->image(hidden->image());
}
b1->redraw();
b2->redraw();} selected
image {dn.png} deimage {dn.png} xywh {55 158 64 53} type Radio
down_box ROUND_DOWN_BOX
}
}
Fl_Button hidden {
image {up.png} deimage {dn.png} xywh {40 310 64 70} when 0 hide
}
}
}
------
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