[GTK+]ボタンにアイコンを追加する

• box 内に image と label を配置して画像付きボタンを作成する
• 画像には xpm ファイルを使用する

Example: button.c

#include <gtk/gtk.h>

static GtkWidget *xpm_label_box(gchar *xpm_filename, gchar *label_text)
{
    GtkWidget *box;
    GtkWidget *label;
    GtkWidget *image;

    /* Create box for image and label */
    box = gtk_hbox_new(FALSE, 0);
    gtk_container_set_border_width(GTK_CONTAINER(box), 2);

    /* Load image for the button */
    image = gtk_image_new_from_file(xpm_filename);

    /* Create a label for the button */
    label = gtk_label_new(label_text);

    /* Pack the image and label into the box */
    gtk_box_pack_start(GTK_BOX(box), image, FALSE, FALSE, 3);
    gtk_box_pack_start(GTK_BOX(box), label, FALSE, FALSE, 3);

    gtk_widget_show(image);
    gtk_widget_show(label);

    return box;
}

static void callback(GtkWidget *widget, gpointer data)
{
    g_print("Hello again - %s was pressed\n", (char*)data);
}

int main(int argc, char **argv)
{
    GtkWidget *window;
    GtkWidget *button, *toggle_button;
    GtkWidget *box;

    gtk_init(&argc, &argv);

    /* Create a new window */
    window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
    gtk_window_set_title(GTK_WINDOW(window), "Pixmap'd buttons");

    g_signal_connect(G_OBJECT(window), "destroy", G_CALLBACK(gtk_main_quit), NULL);
    g_signal_connect(G_OBJECT(window), "delete_event", G_CALLBACK(gtk_main_quit), NULL);

    /* ボーダーの幅を設定 */
    gtk_container_set_border_width(GTK_CONTAINER(window), 10);

    /* Create a new button */
    button = gtk_button_new();

    g_signal_connect(G_OBJECT(button), "clicked", G_CALLBACK(callback), (gpointer)"cool button");

    box = xpm_label_box("CarGrey.xpm", "cool button");

    /* Create a new toggle_button */
    toggle_button = gtk_toggle_button_new();
    g_signal_connect(G_OBJECT(toggle_button), "clicked", G_CALLBACK(callback), (gpointer)"toggle button");

    /* Pack and show all our widget */
    gtk_widget_show(box);
    gtk_container_add(GTK_CONTAINER(button), box);
    gtk_widget_show(button);
    gtk_container_add(GTK_CONTAINER(window), button);
    gtk_widget_show(window);

    gtk_main();

    return 0;
}

実行結果