unable to communicate with printer

print method. 4. Print the queue printqueue: a single instance is used to simulate a queue. The method is thread-safe. Each element is a printjob object. The elements are output first, failed to print, and returned to the end of the queue. 5. Print the capture object printabletracker: This object is a thread and a single instance. The printjob is continuously retrieved from the printqueue. The print is successful and the next one is printed. Otherwise, the current job is moved to the end of the

created when binding (if the service has not yet been created). This parameter can be specified as 0 (not created automatically), or bind_auto_create (created automatically).Note: the Onserviceconnection () method of the Serviceconnection object has a IBinder object that can communicate with the service being bound.When developing the service class, the service class must provide a IBinder Onbind (Intent Intent) method, in the case of binding the gro

This is a creation in Article, where the information may have evolved or changed. Recently encountered a scene: PHP project needs to use a third-party function (stuttering participle), and on GitHub there is a class library written in Golang. So the question is, how do you achieve communication between different languages? The general scenario: Write a http/tcp service with Golang, PHP communicates with Golang via HTTP/TCP The Golang is more encapsulated as a PHP extension. PHP uses

Php uses amf3 to communicate with flex. should all content be written in class and class functions? does require (/des/sq_init.php) not support it? Global variables cannot be used either? Php uses amf3 to communicate with flex location amfphp-2.1.1/Amfphp/Services/HelloWorld. php uses amf3 to communicate with flex. should all content be written in class and class

In our work, we will encounter many problems of one or another. Every day, we will encounter different problems that we cannot solve at a time. What we need to do is not to escape the problem ,, instead, we take the initiative to solve this problem. To solve these problems, we need to find answers to these questions one by one.1. To communicate with the boss about the problems we encounter at work, we should try our best to solve them, instead of esca

Python subprocess. Popen communicate () and wait () usage difference, pythonpopenwait The reason for this problem is that the program has not returned since the wait method of Popen is called. Google found that wait may cause deadlocks. To thoroughly solve this problem, search for some information to see: Link: http://blog.csdn.net/carolzhang8406/article/details/22286913 See other people's example: A problem encountered today. Simply put, usesubproces

Android study note 24. Service entry (2) bind and communicate with the local Service, android. serviceBind and communicate with the local ServiceThrough the first three steps in the previous blog, we have completed a Service and the application that uses the Service (the Service is an integral part of the application ). However, when a program starts or closes a Service through startService () and stopServi

Android uses HTTP protocol to communicate with serverThere are many articles on the Internet about HTTP communication on Android, but most of them give only fragments of implementation code, some considerations and how to design a reasonable class to handle all HTTP requests and return results, which are generally not mentioned. So, I made a summary of this and gave me a solution. First, we need to clarify the HTTP communication process, Android curre

Http://www.cooklife.cn/detail/54c5044ec93620284e964b58#ViewAngular is a front-end framework that implements interactive pages, but for a Web application, where does the data from the page come from, and certainly needs to be supported by the server, how does angular interact with the server?$httpangular provides the $http service to communicate with the service side, $http the XMLHttpRequest object of the service team browser is encapsulated, allowing

Find a very fun, very powerful websiteRunjs-Edit, display, share, and communicate your JavaScript code online http://runjs.cn/Like what:Http://runjs.cn/detail/lp6rqcsrOr:DOCTYPE HTML>HTMLLang= "ZH-CN"> Head> MetaCharSet= "Utf-8"> title>Logintitle> Metaname= "Viewport"content= "Width=device-width, initial-scale=1.0"> Metaname= "Author"content= ""> Head> HTML5 Shim, for ie6-8 support of HTML5 elements - [If Lt IE 9]> - Linkc

For help, the cli mode runs socketserver and maintains a connection with the client. After receiving the request, another common php process needs to notify the cli mode process: "There is a new message, send it to the socket client ". In what way can this sentence be said? Php process Communication ?... For help, the cli mode runs the socket server and maintains the connection with the client, After receiving the request, another common php process needs to notify the cli-mode process: "There

Samsung Smart watch released today with webcam can communicate with mobile phone BluetoothLast weekend, the appearance and parameters of Samsung's smart watch have been well known to some of the media Longines watches. It is known that this is a 3-inch electromechanical laser flex display wrist accessory that runs the Android application, with a size larger than previously anticipated in the industry. It comes with a 4 million megapixel camera and has

'); } ]);Individuals strongly recommend this approachThe Third WayUsing the features of the service singleton pattern in Angularjs, services provide a way to maintain data over the lifetime of an application, communicate between controllers, and ensure data consistency.We typically encapsulate the server to provide an interface for the application to access the data, or to interact with the data remotely.ExampleJavascriptvarMyApp = Angu

; Fourth Step: Verify 24 Enter the cmd command symbol at the beginning of the build and press ENTER to exit the page. 650) this.width=650; "Src=" Http://s2.51cto.com/wyfs02/M00/87/12/wKiom1fSnD2DDeMCAABoYj4vB_Q594.jpg-wh_500x0-wm_3 -wmp_4-s_2604292943.jpg "style=" Float:none; "title=" 6.jpg "alt=" Wkiom1fsnd2ddemcaaboyj4vb_q594.jpg-wh_50 "/>Enter the IP address of the virtual machine ping 192.168.118.7 and press ENTER. This page appears to be successful. 650) this.width=650; "Src=" Http://s2.51c

Vue's most used components communicate in three ways: parent-to-child component communication, child-to-parent component communication, sibling component communication. (template syntax for templates with pug)1. Parent-to-child component communicationParent-to-child component communication is through props data transfer, and has these characteristics, one-way delivery, the child component receives the data can not be changed, if the change, will issue

For example, I have a website, the URL is aaa.com purchased the product on this website and generated an order. But when paying, must jump to my original payment center (domain name bbb.com) up to pay!! So, how is it safe to communicate? I think of the URL between the jump, and then the parameter encryption, or with Auth? or a service? Reply content: For example, I have a website, the URL is aaa.compurchased the product on this website and genera

Codeigniter integration ucenter always fails to communicate. how can this problem be solved? rt, uc communication failure does not prompt the cause, I do not know how to troubleshoot ------ solution ------------------ to find out whether the parameters in the excuse are exactly matched. All parameters are correct. Generally, it will be successful. if it is not successful, output debugging. codeigniter integration ucenter always fails to

As3 uses AMFPHP to communicate with PHP from: http://bbs.9ria.com/thread-65836-1-1.html? First, let's talk about the specific configuration, PHP version: 5.2.5, apache: 2.2.11, (or WAMP2.2), and amfphp: 1.9 (attachment As3 uses AMFPHP to communicate with PHP ). From: http://bbs.9ria.com/thread-65836-1-1.html ? First, let's talk about the specific configuration: PHP version: 5.2.5, apache: 2.2.11, (or WAMP

192.168.2.254 . pc6 ip address 192.168.1.1 , Gateway to 192.168.1.254 . Then use pc5 Ping PC6 to see if you can ping pass. experiment summary: vlan between two ways, one through the single-arm routing implementation, the other is through the three-layer switching routing function, can be said that different Communication between VLAN must pass through the routing function to achieve communication. Second, there is a need to configure the next-hop address (gateway) between di

A friend asked me a question about diskless server two days ago, saying that the BXP Client cannot communicate with the server's hard disk, and there is a red X on the virtual hard disk icon in the Client (Using XP. I have never touched any diskless network before. I once heard a friend say that diskless network has many advantages, but it is a little troublesome. if you have helped your friends and learned the knowledge, isn't it a two-pronged task?