C语言 Segfault in gtk_window_new

Question

我有一个用C编写的简单GTK应用程序，它在window = gtk_window_new(GTK_WINDOW_TOPLEVEL)线上分段故障

这是代码：

#include <gtk/gtk.h>
int main(int argc, char **argv) {
GtkApplication *app = NULL;
GtkWidget *window = NULL;
app = gtk_application_new("com.github.Toothless204", G_APPLICATION_FLAGS_NONE);
window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
gtk_application_add_window(app, GTK_WINDOW(window));
int status = g_application_run(G_APPLICATION(app), argc, argv);
g_object_unref(app);
return status;
}

我在谷歌上搜索了一下，想找到答案，但没有找到任何关于问题的答案

Answer 1

问题：试图在GtkApplication调用GTK+初始化函数之前创建一个窗口。

在使用GTK+之前，您需要对其进行初始化。https://developer.gnome.org/gtk3/stable/gtk3-General.html

#include <gtk/gtk.h>
int main(int argc, char **argv) {
GtkWidget *window = NULL;
gtk_init(&argc, &argv);
window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
gtk_widget_show (window);
g_signal_connect (window, "destroy",
G_CALLBACK (gtk_main_quit), NULL);
gtk_main();
return 0;
}

出于同样的原因，必须在发出GApplication"启动"信号后添加GtkApplication窗口。https://wiki.gnome.org/HowDoI/GtkApplication

#include <gtk/gtk.h>
static void activate (GApplication *app, gpointer user_data) {
GtkWidget *window;
window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
gtk_application_add_window(GTK_APPLICATION(app), GTK_WINDOW(window));
gtk_widget_show (window);
}
int main (int argc, char **argv) {
GtkApplication *app;
int status;
app = gtk_application_new ("com.github.Toothless204", G_APPLICATION_FLAGS_NONE);
g_signal_connect (app, "activate", G_CALLBACK (activate), NULL);
status = g_application_run (G_APPLICATION (app), argc, argv);
g_object_unref (app);
return status;
}