RE: [fltk.general] Re: FLTK Window icon for program GNU/ Linux [General Use]

[MacArthur, Ian (Leonardo, UK)]

> That worked for me:

> Fl_Pixmap win_pixmap(icon_xpm);
> Fl_RGB_Image win_icon(&win_pixmap, Fl_Color(0));
> win->icon(&win_icon);

> But is it also possible to set an icon for windows from these
> "convenient functions" like fl_message() or fl_file_chooser() in a
> similar way?


Hmm, I'm not sure what you are asking for here - which icon is it that you want to change in this case?

The convenience function dialogs are usually tied to a parent application (indeed the dialogs in question are frequently modal) and *most* window managers do not show any icon for them.

What window manager are you using? What effect are you hoping to attain?



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[Karl Harbinger]

Am Mittwoch, 29. Juni 2016 11:09:58 UTC+2 schrieb MacArthur, Ian (Leonardo, UK):

Hmm, I'm not sure what you are asking for here - which icon is it that you want to change in this case?

The convenience function dialogs are usually tied to a parent application (indeed the dialogs in question are frequently modal) and *most* window managers do not show any icon for them.

What window manager are you using? What effect are you hoping to attain?

I'm using Unity, and I want to set the (pixmap) icon which will then be visible in the task bar. I can achieve this by using the code win->icon(&win_icon); , but I can't do that with fl_message() for example.
I know I can use .dekstop files, but I'd still like to have embedded icons for portable apps. I can do this for example very easily in Qt, but in FLTK it seems to be a little troublesome.

[chris]

Am 09.07.2016 um 19:48 schrieb Karl Harbinger:

> I'm using Unity, and I want to set the (pixmap) icon which will then be
> visible in the task bar. I can achieve this by using the code

> /win->icon(&win_icon);/ , but I can't do that with fl_message() for example.

It can be done, but only with a dirty trick. The problem is, that you
don't know the Fl_Window of the dialog and that the dialog is modal.

If you set a timeout handler *before* calling the convenience dialog
method, you can find out the Fl_Window pointer of the dialog in the
timer callback with Fl::first_window() and set it's icon.


void cb_to()
{
if ( Fl::first_window() )
{
Fl_Window *win = Fl::first_window(); // the window of the dialog
// now set the icon as usual
...
}
}

// main
...
// set timeout before opening dialog
Fl::add_timeout( 0.3, cb_to );

// the dialog
fl_message( ... )


Hacky, I know, but at least on Ubuntu 14.04 this works.

[Karl Harbinger]

Someone else already posted a solution that worked for me.
I just put the following code in my main() function before the first window is started:

Fl_Pixmap win_pixmap(icon_xpm);

Fl_RGB_Image win_icon(&win_pixmap, Fl_Color(0));

Fl_Window::default_icon(&win_icon);

This will also work on the dialoges from fl_ask.H