gtk界面编程

#include <gtk/gtk.h>

int main( int argc, char *argv[])

{

    GtkWidget *window;

    /*初始化整个GTK+程序，是每一个GTK+程序必不可少的部分*/

    gtk_init(&argc, &argv);

    /*这里生成了一个窗口构件——GtkWindow，GTK_WINDOW_TOPLEVEL包含窗口的标题栏和边框，同意用窗口管理器来进行管理*/

    window = gtk_window_new(GTK_WINDOW_TOPLEVEL);



    /*开始显示窗口*/

    gtk_widget_show(window);

    gtk_main();

    return 0;

}

sudo apt-get install libgtk-3-dev

gcc gt.c -o gtkwin `pkg-config --cflags --libs gtk+-3.0`

#include <stdio.h>

#include <gtk/gtk.h>

void gtest(int a)

{

        printf("===:%d\n",a);

}







static void

draw_round_rectangle (cairo_t * cr,

                      double x, double y,

                      double width, double height, double r)

{

        cairo_move_to (cr, x + r, y);

        cairo_line_to (cr, x + width - r, y);



        cairo_move_to (cr, x + width, y + r);

        cairo_line_to (cr, x + width, y + height - r);



        cairo_move_to (cr, x + width - r, y + height);

        cairo_line_to (cr, x + r, y + height);



        cairo_move_to (cr, x, y + height - r);

        cairo_line_to (cr, x, y + r);



        cairo_arc (cr, x + r, y + r, r, 3.14, 3 * 3.14 / 2.0);

        cairo_arc (cr, x + width - r, y + r, r, 3 * 3.14 / 2, 2 * 3.14);

        cairo_arc (cr, x + width - r, y + height - r, r, 0, 3.14 / 2);

        cairo_arc (cr, x + r, y + height - r, r, 3.14 / 2, 3.14);

}



static gboolean

draw (GtkWidget *widget, cairo_t *cr, gpointer user_data)

{

        cr = gdk_cairo_create (gtk_widget_get_window (widget));



        cairo_set_source_rgb (cr, 0, 0, 0);

        cairo_set_line_width (cr, 1);

        cairo_rectangle (cr, 20, 20, 120, 80);

        cairo_rectangle (cr, 180, 20, 80, 80);

        cairo_stroke_preserve (cr);

        cairo_set_source_rgb (cr, 1, 1, 1);

        cairo_fill (cr);



        cairo_set_source_rgb (cr, 0, 0, 0);

        cairo_arc (cr, 330, 60, 40, 0, 2 * 3.14);

        cairo_stroke_preserve (cr);

        cairo_set_source_rgb (cr, 1, 1, 1);

        cairo_fill (cr);



        cairo_set_source_rgb (cr, 0, 0, 0);

        cairo_arc (cr, 90, 160, 40, 3.14 / 4, 3.14);

        cairo_close_path (cr);

        cairo_stroke_preserve(cr);

        cairo_set_source_rgb (cr, 1, 1, 1);

        cairo_fill (cr);



        cairo_set_source_rgb (cr, 0, 0, 0);

        cairo_translate (cr, 220, 180);

        cairo_scale (cr, 1, 0.7);

        cairo_arc (cr, 0, 0, 50, 0, 2 * 3.14);

        cairo_stroke_preserve (cr);

        cairo_set_source_rgb (cr, 1, 1, 1);

        cairo_fill (cr);



        cairo_set_source_rgb (cr, 0.8, 0.4, 0);

        cairo_translate (cr, 80, -30);

        cairo_set_line_width (cr, 6);

        draw_round_rectangle (cr, 5, 5, 60, 60, 8);

        cairo_stroke_preserve (cr);

        cairo_set_source_rgb (cr, 0.8, 0.8, 0.2);

        cairo_fill (cr);



        cairo_destroy (cr);



        return FALSE;

}



int gt( int argc, char **argv)

{

        GtkWidget *window;

        GtkWidget *darea;



        gtk_init (&argc, &argv);



        window = gtk_window_new (GTK_WINDOW_TOPLEVEL);



        darea = gtk_drawing_area_new ();

        gtk_container_add (GTK_CONTAINER (window), darea);



        g_signal_connect (darea, "draw",

                      G_CALLBACK (draw), NULL);

        g_signal_connect (window, "destroy",

                      G_CALLBACK (gtk_main_quit), NULL);



        gtk_window_set_position (GTK_WINDOW (window),

                             GTK_WIN_POS_CENTER);

        gtk_window_set_default_size (GTK_WINDOW (window), 500, 400);



        gtk_widget_show_all (window);



        gtk_main ();



        return 0;

}