[C++知识库]C语言gtk调用css样式

首先写好对应的xml 文件和css 样式

之后在.c 文件中连接

先获取cssprovider

    GtkCssProvider *css_provider = gtk_css_provider_new();

    if(gtk_css_provider_load_from_path(css_provider, "builder3.css", &error) == 0) {
        g_printerr("Error loading css file: %s\n", error->message);
        g_clear_error(&error);
        return 1;
    }

后面将其绑定进创建好的windows

    GtkCssProvider *css_provider = gtk_css_provider_new();

    if(gtk_css_provider_load_from_path(css_provider, "builder3.css", &error) == 0) {
        g_printerr("Error loading css file: %s\n", error->message);
        g_clear_error(&error);
        return 1;
    }

无css 样式的代码和实例

#include <stdio.h>
#include <gtk/gtk.h>
#include <stdlib.h>

G_MODULE_EXPORT void print_hello2(GtkWidget *widget, GtkTextBuffer *data) {
    GtkTextIter start;
    GtkTextIter end;
    gtk_text_buffer_get_start_iter(data, &start);
    gtk_text_buffer_get_end_iter(data, &end);
    g_print("Hello2 : %s\n", gtk_text_buffer_get_text(data, &start, &end, FALSE));
}

static void print_hello(GtkWidget *widget, char const *data) {
    g_print("Hello : %s\n", data);
}

int main(int argc, char **argv) {
    GError *error = NULL;

    gtk_init(&argc, &argv);

//    GtkCssProvider *css_provider = gtk_css_provider_new();
//
//    if(gtk_css_provider_load_from_path(css_provider, "builder3.css", &error) == 0) {
//        g_printerr("Error loading css file: %s\n", error->message);
//        g_clear_error(&error);
//        return 1;
//    }

    GtkBuilder *builder = gtk_builder_new();
    if (gtk_builder_add_from_file(builder, "builder3.ui", &error) == 0){
        g_printerr("Error loading builder file: %s\n", error->message);
        g_clear_error(&error);
        return 1;
    }

    GObject *window = gtk_builder_get_object(builder, "window");
//    gtk_style_context_add_provider_for_screen(gtk_window_get_screen(GTK_WINDOW(window)),
//                                              (GtkStyleProvider *) css_provider, GTK_STYLE_PROVIDER_PRIORITY_USER);

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

    GObject *button1 = gtk_builder_get_object(builder, "button1");
    g_signal_connect(button1, "clicked", G_CALLBACK(print_hello), "button1");
    GObject *button2 = gtk_builder_get_object(builder, "button2");
    //g_signal_connect(button2, "clicked", G_CALLBACK(print_hello), "button2");
    gtk_builder_connect_signals(builder, NULL);

    GObject *quit = gtk_builder_get_object(builder, "quit");
    g_signal_connect(quit, "clicked", G_CALLBACK(gtk_main_quit), NULL);

    gtk_main();

    g_object_unref(builder);

    return 0;
}

有样式的代码和实例

#include <stdio.h>
#include <gtk/gtk.h>
#include <stdlib.h>

G_MODULE_EXPORT void print_hello2(GtkWidget *widget, GtkTextBuffer *data) {
    GtkTextIter start;
    GtkTextIter end;
    gtk_text_buffer_get_start_iter(data, &start);
    gtk_text_buffer_get_end_iter(data, &end);
    g_print("Hello2 : %s\n", gtk_text_buffer_get_text(data, &start, &end, FALSE));
}

static void print_hello(GtkWidget *widget, char const *data) {
    g_print("Hello : %s\n", data);
}

int main(int argc, char **argv) {
    GError *error = NULL;

    gtk_init(&argc, &argv);

    GtkCssProvider *css_provider = gtk_css_provider_new();

    if(gtk_css_provider_load_from_path(css_provider, "builder3.css", &error) == 0) {
        g_printerr("Error loading css file: %s\n", error->message);
        g_clear_error(&error);
        return 1;
    }

    GtkBuilder *builder = gtk_builder_new();
    if (gtk_builder_add_from_file(builder, "builder3.ui", &error) == 0){
        g_printerr("Error loading builder file: %s\n", error->message);
        g_clear_error(&error);
        return 1;
    }

    GObject *window = gtk_builder_get_object(builder, "window");
    gtk_style_context_add_provider_for_screen(gtk_window_get_screen(GTK_WINDOW(window)),
                                              (GtkStyleProvider *) css_provider, GTK_STYLE_PROVIDER_PRIORITY_USER);

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

    GObject *button1 = gtk_builder_get_object(builder, "button1");
    g_signal_connect(button1, "clicked", G_CALLBACK(print_hello), "button1");
    GObject *button2 = gtk_builder_get_object(builder, "button2");
    //g_signal_connect(button2, "clicked", G_CALLBACK(print_hello), "button2");
    gtk_builder_connect_signals(builder, NULL);

    GObject *quit = gtk_builder_get_object(builder, "quit");
    g_signal_connect(quit, "clicked", G_CALLBACK(gtk_main_quit), NULL);

    gtk_main();

    g_object_unref(builder);

    return 0;
}