GTK3.0 使用CSS设置控件背景色_html/css_WEB-ITnose

/*  Compile with:   gcc -Wall -o backimage `pkg-config --cflags --libs gtk+-3.0` backimage.c */#include <gtk/gtk.h>int main(int argc, char *argv[]){  GtkWidget *window;/*----- CSS ----------- */  GtkCssProvider *provider;  GdkDisplay *display;  GdkScreen *screen;/*-----------------------*/  gtk_init (&argc, &argv);  window = gtk_window_new (GTK_WINDOW_TOPLEVEL);/*    gtk_window_set_default_size (GTK_WINDOW(window),                                 500, 300);*/  g_signal_connect (GTK_WIDGET(window),                    "destroy",                    G_CALLBACK (gtk_main_quit),                    NULL);/*------------- CSS  --------------------------------------------------------------------------------------------------*/  provider = gtk_css_provider_new ();  display = gdk_display_get_default ();  screen = gdk_display_get_default_screen (display);  gtk_style_context_add_provider_for_screen (screen,                                             GTK_STYLE_PROVIDER(provider),                                             GTK_STYLE_PROVIDER_PRIORITY_USER);  gtk_css_provider_load_from_data (GTK_CSS_PROVIDER (provider),                                     " GtkWindow {\n"                                                              "   background-image: url('abstract-blue-02.jpg');\n"                                        "}\n", -1, NULL);  g_object_unref (provider);/*----------------------------------------------------------------------------------------------------------------------*/  gtk_widget_show_all (window);  gtk_main ();return(0);}