Get rid of deprecated functions in GTK 3.x

[tanuki-no]

There are next compilation warnings:

display.c: In function ‘update_window’: display.c:153:9: warning: ‘gdk_cairo_create’ is deprecated: Use 'gdk_window_begin_draw_frame() and gdk_drawing_context_get_cairo_context()' instead [-Wdeprecated-declarations] 153 | cairo_t *cr = gdk_cairo_create(drawable); | ^~~~~~~ In file included from /usr/include/gtk-3.0/gdk/gdk.h:33, from /usr/include/gtk-3.0/gtk/gtk.h:30, from display.c:23: /usr/include/gtk-3.0/gdk/gdkcairo.h:35:12: note: declared here 35 | cairo_t * gdk_cairo_create (GdkWindow *window); | ^~~~~~~~~~~~~~~~ display.c: In function ‘button_release_event’: display.c:323:9: warning: ‘gdk_cairo_create’ is deprecated: Use 'gdk_window_begin_draw_frame() and gdk_drawing_context_get_cairo_context()' instead [-Wdeprecated-declarations] 323 | cairo_t *cr = gdk_cairo_create(drawable); | ^~~~~~~ /usr/include/gtk-3.0/gdk/gdkcairo.h:35:12: note: declared here 35 | cairo_t * gdk_cairo_create (GdkWindow *window); | ^~~~~~~~~~~~~~~~ display.c:330:9: warning: ‘gdk_flush’ is deprecated: Use 'gdk_display_flush' instead [-Wdeprecated-declarations] 330 | gdk_flush(); /* force X to actually draw the damn thing. */ | ^~~~~~~~~ In file included from /usr/include/gtk-3.0/gdk/gdk.h:50: /usr/include/gtk-3.0/gdk/gdkmain.h:124:6: note: declared here 124 | void gdk_flush (void);
I propose the fix based on this solution.

driftnet-1.6.0-fix-deprecated-gtk-3.x.patch

[deiv]

@tanuki-no ty, appreciated. That should be fixed.

May I ask you a favor? I like diff's, Im a gnu user, but github does not match good with them. Could you please open a PR ?

[tanuki-no]

Ah, ok. I submit a PR in separate branch. Could I also submit libpcap fixes since the pcap library has new API and require to update the older code?

[deiv]

Go ahead, it will be more than welcome.

May I ask you to do the pcap changes in a separate PR ?

[tanuki-no]

Yes. Sure. Separate branch for each PR.