Hi Giuseppe,
It looks like you are going to need to set up a callback and grab the focus of
that uncooperative nested textview. It should work with GTK3.
Eric
//gcc -Wall codebox1.c -o codebox1 `pkg-config --cflags --libs gtk+-3.0`
#include<gtk/gtk.h>
static void get_focus(GtkWidget *button, GtkWidget *text_view_nested)
{
g_print("Grab Focus Button\n");
gtk_widget_grab_focus(text_view_nested);
}
gboolean grab_focus(GtkWidget *widget, GdkEvent *event, gpointer user_data)
{
g_print("Grab Focus Click\n");
gtk_widget_grab_focus(widget);
return TRUE;
}
int main(int argc, char *argv[])
{
gtk_init(&argc, &argv);
GtkWidget *window=gtk_window_new(GTK_WINDOW_TOPLEVEL);
gtk_window_set_title(GTK_WINDOW(window), "CodeBox");
gtk_window_set_default_size(GTK_WINDOW(window), 450, 450);
gtk_window_set_position(GTK_WINDOW(window), GTK_WIN_POS_CENTER);
gtk_container_set_border_width(GTK_CONTAINER(window), 20);
g_signal_connect(window, "destroy", G_CALLBACK(gtk_main_quit), NULL);
GtkWidget *text_view_base=gtk_text_view_new();
gtk_text_view_set_wrap_mode(GTK_TEXT_VIEW(text_view_base), GTK_WRAP_CHAR);
gtk_widget_set_hexpand(text_view_base, TRUE);
gtk_widget_set_vexpand(text_view_base, TRUE);
GtkTextIter iter;
GtkTextBuffer
*r_buffer_base=gtk_text_view_get_buffer(GTK_TEXT_VIEW(text_view_base));
gtk_text_buffer_get_end_iter(r_buffer_base, &iter);
gtk_text_buffer_insert(r_buffer_base, &iter, "Anchored TextView
below:\n==>", -1);
GtkWidget *text_view_nested=gtk_text_view_new();
gtk_widget_set_size_request(text_view_nested, 100, 50);
gtk_widget_set_name(text_view_nested, "cyan_view");
gtk_text_view_set_wrap_mode(GTK_TEXT_VIEW(text_view_nested), GTK_WRAP_CHAR);
gtk_widget_set_hexpand(text_view_nested, TRUE);
gtk_widget_set_vexpand(text_view_nested, TRUE);
GtkTextBuffer
*s_buffer_base=gtk_text_view_get_buffer(GTK_TEXT_VIEW(text_view_nested));
gtk_text_buffer_get_end_iter(s_buffer_base, &iter);
gtk_text_buffer_insert(s_buffer_base, &iter, "Nested buffer space.", -1);
g_signal_connect(text_view_nested, "button-press-event",
G_CALLBACK(grab_focus), NULL);
GtkWidget *scroll=gtk_scrolled_window_new(NULL, NULL);
gtk_widget_set_hexpand(scroll, TRUE);
gtk_widget_set_vexpand(scroll, TRUE);
gtk_widget_set_size_request(scroll, 100, 50);
gtk_container_add(GTK_CONTAINER(scroll), text_view_nested);
GtkWidget *entry_nested=gtk_entry_new();
gtk_text_buffer_get_end_iter(r_buffer_base, &iter);
GtkTextChildAnchor
*r_anchor_text_view=gtk_text_buffer_create_child_anchor(r_buffer_base, &iter);
gtk_text_buffer_get_end_iter(r_buffer_base, &iter);
gtk_text_buffer_insert(r_buffer_base, &iter, "<==\nAnchored TextView
above^\n\nAnchored Entry below:\n==>", -1);
gtk_text_buffer_get_end_iter(r_buffer_base, &iter);
GtkTextChildAnchor
*r_anchor_entry=gtk_text_buffer_create_child_anchor(r_buffer_base, &iter);
gtk_text_buffer_get_end_iter(r_buffer_base, &iter);
gtk_text_buffer_insert(r_buffer_base, &iter, "<==\nAnchored Entry
above^\n", -1);
gtk_text_view_add_child_at_anchor(GTK_TEXT_VIEW(text_view_base), scroll,
r_anchor_text_view);
gtk_text_view_add_child_at_anchor(GTK_TEXT_VIEW(text_view_base),
entry_nested, r_anchor_entry);
GtkWidget *button=gtk_button_new_with_label("Get Focus");
g_signal_connect(button, "clicked", G_CALLBACK(get_focus),
text_view_nested);
GtkWidget *grid=gtk_grid_new();
gtk_grid_attach(GTK_GRID(grid), text_view_base, 0, 0, 1, 1);
gtk_grid_attach(GTK_GRID(grid), button, 0, 1, 1, 1);
gtk_container_add(GTK_CONTAINER(window), grid);
gtk_widget_show_all(window);
GError *css_error=NULL;
gchar *css_string1=NULL;
css_string1=g_strdup("#cyan_view{background: cyan;}");
GtkCssProvider *provider=gtk_css_provider_new();
GdkDisplay *display=gdk_display_get_default();
GdkScreen *screen=gdk_display_get_default_screen(display);
gtk_style_context_add_provider_for_screen(screen,
GTK_STYLE_PROVIDER(provider), GTK_STYLE_PROVIDER_PRIORITY_APPLICATION);
gtk_css_provider_load_from_data(provider, css_string1, -1, &css_error);
if(css_error!=NULL)
{
g_print("CSS loader error %s\n", css_error->message);
g_error_free(css_error);
}
g_object_unref(provider);
if(css_string1!=NULL) g_free(css_string1);
gtk_main();
return 0;
}
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