GTK4快速示例

系统环境：openSUSE Tumbleweed
本文在grok3协助完成

安装

sudo zypper install gtk4-devel gcc make meson ninja vulkan-devel wayland-devel gtk4-tools gdb

创建项目

meson.build

project('mygtkapp', 'c')
gtk4_dep = dependency('gtk4')
executable('mygtkapp', 'main.c', dependencies: gtk4_dep)

main.c

#include <gtk/gtk.h>

static void activate(GtkApplication *app, gpointer user_data) {
    GtkWidget *window = gtk_application_window_new(app);
    gtk_window_set_title(GTK_WINDOW(window), "Hello GTK4");
    gtk_window_set_default_size(GTK_WINDOW(window), 400, 300);
    gtk_window_present(GTK_WINDOW(window)); // 显示窗口并置于前台
}

int main(int argc, char **argv) {
    GtkApplication *app = gtk_application_new("org.example.myapp", G_APPLICATION_DEFAULT_FLAGS);
    g_signal_connect(app, "activate", G_CALLBACK(activate), NULL);
    int status = g_application_run(G_APPLICATION(app), argc, argv);
    g_object_unref(app);
    return status;
}

构建

meson setup builddir
meson compile -C builddir