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Xerox 07W & -11W, 05W manual DDE Terminology, Hot & Warm DDE Links, 13-3

Models: 07W & -11W 05W

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Dynamic Data Exchange

DDE Terminology

In order to achieve a degree of understanding of the concepts of DDE, it is important to have a grasp of some of the terminology used to describe the protocol. Two applications co-operating in a DDE link are considered to be engaged in a DDE conversation. The application that initiates the conversation is the client application; and the responding application is the DDE server application. An application can be engaged in several conversations at the same time and is capable of acting both as a client in some conversations and as a server in others. The units of data that are passed between client and server DDE applications are identified by a three level hierarchy of item, topic and application name.

Each DDE conversation can be uniquely defined by the application name and topic. As discussed in the previous example, at the beginning of a DDE conversation the client and server agree upon the application name and topic. The application name is usually the name of the server application. The topic is a general classification of data within which multiple data items may be exchanged during conversation. For applications that operate on file-based documents, the topic is usually a file name. For other applications the topic is an application-specific name.

A DDE data item is the actual information related to the conversation topic that is exchanged between applications. Values for the data item can be passed from the server to the client, or from the client to the server.

Once a DDE conversation has begun, the client can establish one or more permanent data links with the server. A data link is a communication mechanism by which the server notifies the client that the value of a given data item has changed. The data link is considered as permanent because this notification process continues until the data link or the DDE conversation itself is terminated.

Hot & Warm DDE Links

There are two kinds of permanent data links, Hot and Warm. In the case of a Warm data link, when the server application detects that the value of a data item has changed, it will notify the client that a change has occurred, but will not actually send the new value for that data item. The onus here is on the client application to decide whether or not it will take the new value. Only upon receipt of a positive response from the client will the server transmit the new value for the data item. In contrast to this, with a Hot link the server will automatically pass onto the client the new value for a data item immediately its value changes.

There are two methods acceptable to TeemTalk for setting up a link. The first is to use the Edit menu Copy and Paste facility to copy DDE header information to the clipboard, which a client application can then read and act upon appropriately. The second is for the client application to directly transmit a WM_DDE_ADVISE message to TeemTalk in the same format as defined for the clipboard copy.

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Xerox 07W & -11W, 05W manual DDE Terminology, Hot & Warm DDE Links, 13-3
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07W & -11W, 05W specifications

Xerox has long been a leader in the field of imaging and printing technology, and its innovative product lines consistently push the boundaries of performance and functionality. Among these products, the Xerox 05W, 07W, and 11W series stand out as versatile multifunction printers that cater to the needs of various businesses.

The Xerox 05W series is designed with small to medium-sized businesses in mind. It boasts a compact footprint without sacrificing performance. One of the key features of the 05W is its high-resolution printing capability, delivering crisp, vibrant documents at impressive speeds. The series supports a variety of media types and sizes, making it ideal for diverse office environments. Additionally, the 05W incorporates user-friendly controls and an intuitive interface, allowing employees to navigate its functions with ease.

Moving up the range, the Xerox 07W series offers enhanced features geared towards organizations that require increased productivity. This series includes advanced scanning capabilities, allowing users to digitize documents quickly and efficiently. The 07W is compatible with a range of cloud services, facilitating seamless document sharing and collaboration. Enhanced security features, such as secure print and user authentication, make it a suitable choice for businesses that prioritize data protection.

At the top of the lineup, the Xerox 11W series is a powerhouse, designed for high-volume printing environments. It combines speed with quality, boasting robust performance metrics that can handle demanding workflows. The 11W series incorporates cutting-edge technologies such as automatic duplexing, which saves time and paper, and advanced finishing options, providing users with professional-quality documents. The series also supports mobile printing solutions, enabling users to print directly from their smartphones or tablets.

All three series – 05W, 07W, and 11W – share a commitment to sustainability, employing energy-efficient technologies that reduce environmental impact without compromising performance. They also come equipped with comprehensive support options, ensuring customers have access to expert assistance when needed.

In summary, the Xerox 05W, 07W, and 11W series cater to different business needs, ranging from compact functionality to robust performance. They incorporate advanced technologies and key features that enhance productivity, security, and sustainability, making them suitable for a wide array of professional environments. With their reliability and versatility, these printers continue to uphold Xerox's legacy as a leader in the imaging and printing industry.