我学习了一些ruby,今天我尝试用gtk3开始构建GUI。 我找到了这个教程
http://zetcode.com/gui/rubygtk/introduction/
我复制了试图在我的终端上运行脚本的代码。
sudo ruby gui.rb
但我只得到这个错误代码。
gui.rb:34:in
<main>': undefined method
init'for Gtk:Module(NoMethodError)
我已使用以下命令安装了gtk3 gem。
sudo gem install gtk3
之前我尝试将gtk用于..
sudo gem install gtk2
错误在哪里? 我已经成功安装了gtk。
答案 0 :(得分:2)
您不必再使用user nginx;
worker_processes 1;
error_log /var/log/nginx/error.log warn;
pid /var/run/nginx.pid;
events {
worker_connections 1024;
}
http {
include /etc/nginx/mime.types;
default_type application/octet-stream;
log_format main '$remote_addr - $remote_user [$time_local] "$request" '
'$status $body_bytes_sent "$http_referer" '
'"$http_user_agent" "$http_x_forwarded_for"';
access_log /var/log/nginx/access.log main;
sendfile on;
#tcp_nopush on;
gzip on;
gzip_http_version 1.1;
gzip_comp_level 2;
gzip_proxied any;
gzip_vary on;
gzip_types text/plain
text/xml
text/css
text/javascript
application/json
application/javascript
application/x-javascript
application/ecmascript
application/xml
application/rss+xml
application/atom+xml
application/rdf+xml
application/xml+rss
application/xhtml+xml
application/x-font-ttf
application/x-font-opentype
application/vnd.ms-fontobject
image/svg+xml
image/x-icon
application/atom_xml;
gzip_buffers 16 8k;
add_header X-Frame-Options SAMEORIGIN;
ssl_protocols TLSv1.2 TLSv1.1 TLSv1;
keepalive_timeout 60;
proxy_connect_timeout 60;
proxy_send_timeout 60;
proxy_read_timeout 60;
send_timeout 60;
client_max_body_size 100M;
proxy_cache_path /dev/shm levels=1:2 keys_zone=mcache:16m inactive=600s max_size=512m;
proxy_cache_methods GET HEAD;
proxy_cache_min_uses 1;
proxy_cache_key "$request_method$host$request_uri";
proxy_cache_use_stale timeout updating;
proxy_ignore_headers Cache-Control Expires Set-Cookie;
server {
listen 80;
server_name my.company.com;
return 301 https://$host$request_uri;
}
server {
listen 443 http2 default_server ssl;
server_name my.company.com;
ssl_certificate /etc/nginx/ssl/cert.pem;
ssl_certificate_key /etc/nginx/ssl/cert.key;
ssl on;
# API server
location /api {
if ($request_method = OPTIONS) {
return 204;
}
# Proxy settings
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_pass http://internal-api-server;
# Error handlers
error_page 504 /errors/504.json;
if ($request_uri ~* /api/foo/bar) {
proxy_cache_bypass 0;
proxy_no_cache 0;
proxy_cache mcache; # mcache=RAM
proxy_cache_valid 200 301 302 30m;
proxy_cache_valid 403 404 5m;
proxy_cache_lock on;
proxy_cache_use_stale timeout updating;
add_header X-Proxy-Cache $upstream_cache_status;
}
# CORS headers
add_header 'Access-Control-Allow-Origin' '*' always;
add_header 'Allow' '*' always;
add_header 'Access-Control-Allow-Methods' 'GET, HEAD, POST, PUT, DELETE, PATCH, OPTIONS' always;
add_header 'Access-Control-Allow-Headers' 'Origin, X-Requested-With, Content-Type, Accept, Referrer, User-Agent, Authorization, X-Impersonate-As, X-Request-Context' always;
add_header 'Access-Control-Allow-Credentials' 'true' always;
add_header 'Access-Control-Expose-Headers' 'Authorization, X-Info-Resources' always;
add_header 'Access-Control-Max-Age' 3628800 always;
}
location ^~ /errors/ {
internal;
root /etc/nginx/static-files/;
}
location /nginx_status {
stub_status on;
access_log off;
}
}
}
方法了。
从下面的教程中,只需保持代码如下:
GTK.init
此外,您不应该使用sudo来安装您的宝石,因此您可以在不成为root的情况下运行脚本。
运行#!/usr/bin/ruby
'''
ZetCode Ruby GTK tutorial
This program centers a window on
the screen.
Author: Jan Bodnar
Website: www.zetcode.com
Last modified: May 2014
'''
require 'gtk3'
class RubyApp < Gtk::Window
def initialize
super
set_title "Center"
signal_connect "destroy" do
Gtk.main_quit
end
set_default_size 300, 200
set_window_position Gtk::Window::Position::CENTER
show
end
end
# Gtk.init
window = RubyApp.new
Gtk.main
会将您的宝石安装到根目录中。
答案 1 :(得分:0)
错误意味着您没有定义您尝试在程序第34行上运行的方法。
如果你想在Ruby中尝试使用GUI,我建议使用Shoes,鞋子非常简单,那里有很多很棒的教程。
这是指向鞋子的链接:http://shoesrb.com/
答案 2 :(得分:0)
我正在使用较旧的代码调试类似的问题。 gtk gem的3.0.x系列有(a)没有init
方法,(b)没有我能找到的最新文档,......: - (
要返回使用该代码的gtk3
版本,请尝试
gem install gtk --version "~> 2.2"
如果您使用的是,请在您的gemspec中使用~> 2.2