How to use gtk-demos?

[ADe]

I want to compile code showed in gtk-demos (which is actually a standalone application). I want to learn gtk using c/c++, but online examples are sparse or bad.

problem is that they dont have main functions, but they do have:

GtkWidget* do_<insert_demo_name> (GtkWidget *do_widget)

for example demos/gtk-demo/tabs.c · main · GNOME / gtk · GitLab

So how do i use those do_* functions in main function and compile them as a standalone file?

Another unrelated question is that i’m planning to use opengl in my gtk application, but all examples i saw had some padding / margin applied to GLArea which i had no idea how to remove.
take a look at this image to see what i mean, opengl area has like 5 pixel padding around it on all sides, and i haven’t able to find any code that adds that padding.
is it hardcoded in gtk?

To anyone reading, thanks for attention

[ebassi (Emmanuele Bassi)]

@ADe

So how do i use those do_* functions in main function and compile them as a standalone file?

You don’t: the do_* functions are called by the main gtk-demo application.

The point of showing the code is not to copy paste it as is: it’s to read it.

If you want to put the code inside a stand alone example, you’ll have to:

1. write your own GtkApplication instantiation
2. write your own GtkApplicationWindow
3. include the widgets created by the desired demo inside the application window

[ADe]

Hi, thanks for reply.

The point of showing the code is not to copy paste it as is: it’s to read it.

i know that gtk-demos are not designed to do that, but personally if i cant run the code (as standalone), i can’t understand the code.

I’ll still try to figure out how to incorporate them in main function, and thanks for the hint