In general, GLib’s purpose is a utility and portability library. Those in itself are reasons to consider using it. The specific functions you mention all offer something extra on top of their C standard library variants: g_strdup_printf is like sprintf, but actually allocates the buffer for you and saves you the guesswork of how large … Read more
I would say that it depends: if you find that using Glade you can build the apps you want or need to make than that’s absolutely fine. If however you actually want to learn how GTK works or you have some non-standard UI requirements you will have to dig into GTK internals (which are not … Read more
I haven’t seen a dpi getter in GTK, but with some lines of code from open sources and some changes, I usually ask the X-server with this code-snippet to get the dpi values for the x and y direction. For the displayname you can pass the value(s) you want via argv[]. If you name it … Read more
There are two issues. First, your CFLAGS line is wrong: you forgot to say gtk+-3.0 in the pkg-config part, so pkg-config will spit out an error instead: CFLAGS=-g -Wall -Wextra $(pkg-config –cflags gtk+-3.0) Second, and more important, $(…) is intercepted by make itself for variable substitution. In fact, you’ve seen this already: SOURCES=$(wildcard *.c) EXECUTABLES=$(patsubst … Read more
I won’t talk about FLTK as I don’t know it. wxWidgets uses the native toolkit of the platform, (GTK on Linux, Win32 GUI API on Windows, Cocoa on MacOS X). GTK uses a theming API to fake the look and feel of the platform (custom theming engine on GTK2, CSS-based engine on GTK3). Qt uses … Read more
Yes, I found a site that contains documentations for all python bindings of perhaps all GNOME projects that are supported by the python gi.repository module or the Python GObject Introspection module: http://lazka.github.io/pgi-docs/ The one specifically for GTK is:http://lazka.github.io/pgi-docs/Gtk-3.0/index.html There is also documentation specific to the gi package provided by PyGObject: https://pygobject.readthedocs.io/en/latest/guide/api/api.html I hope you find … Read more
Definitely a bug. Post a bug report and/or upgrade your GTK+ lib.
Try GTKAndroid. It still has many limitations at the moment when I’m writing this comment, but you should be able to run some simple forms with this already.
Welcome, Google users from the future! Since I wrote this answer, the GTK+ website now has official installation instructions that cover what I said below but with more details and less pain. Refer to that page instead. The answer below has been kept for historical reasons. The problem with the GTK+ website is that there … Read more
This isn’t a bug in your code, and it’s not a crash either. It’s actually just a warning that g_source_remove() was called to disconnect a certain event handler that was already disconnected, in this case, in code that is part of gtk. The warning itself was introduced in glib 2.39, in this commit, and seems … Read more