Linux from the beginning to go GTK +-3.0 (A), gtk-3.0

Linux from the beginning to go GTK +-3.0 (A), gtk-3.0

Originally, due to project requirements, I had been studying GTK + 2.0 graphics development for a while in Linux. After a while, I wanted to learn more about GTK.

This time, I learned GTK +-3.0 from the beginning, wrote a blog post for later viewing, and also for beginners.

　　Installation Environment Reference:

Fedora: http://www.cnblogs.com/watsonlong/archive/2011/04/06/2006989.html

Ubuntu: http://www.cnblogs.com/niocai/archive/2011/07/15/2107472.html

Arch: Run sudo pacman-S gtk3 directly.

　　Note:GTK3 is used, and most of the above are GTK2. Install GTK3 in the same way.

　

First, we learned how to create a blank window. Create a source file named example. c. The content is as follows:

1 # include <gtk/gtk. h> // the header file to be included in each GTK program, which declares many types, such as function prototype 2 3 static void activate (GtkApplication * app, gpointer data) 4 {5 GtkWidget * window; // declare a window 6 7 window = gtk_application_window_new (app); // create a window for the app 8 9 gtk_window_set_title (GTK_WINDOW (window ), "Application"); // set the title of the window 10 gtk_window_set_default_size (GTK_WINDOW (window), 200,200); // set the default size of the window to 200 pixels in length and width, and 11 gtk_widget_show_all (window ); // display window 12} 13 14 15 int main (int argc, char ** argv) // main function 16 {17 GtkApplication * app; // declare to create a GtkApplicatin object named app18 int app_status; // return value 19 20 app = gtk_application_new ("org. rain. gtk ", G_APPLICATION_FLAGS_NONE); // create an application21 g_signal_connect (app," activate ", G_CALLBACK (activate), NULL); // connection signal. When initializing the app, call the activate function 22 app_status = g_application_run (G_APPLICATION (app), argc, argv); // run app23 24 g_object_unref (app); // destroy app25 26 return app_status; 27}

Compile the source file and execute the generated example executable file as follows.

gcc example.c `pkg-config --cflags --libs gtk+-3.0` -Wall -o example./example

The running result is as follows: