OLE Explained

This post provides a quick overview of OLE – (Object Linking & Embedding).

OLE – simply is a standard to embed different documents together. One document type containing an object of another document type is said to be a compound document. The contained /embedded document objects retain their properties. This

A common example of OLE is a spreadsheet object (MS Excel) being contained within a word processor (MS Word ). While the user would only be able to edit a document type ( MS Word / MS Excel) If the required software (that understands the document type) is installed on machine.


Dynamic Data Exchange (DDE) Explained

This is a quick overview of DDE – Dynamic Data Exchange.

Windows applications often require to exchange information with multiple application instances or even with different application instances. These applications may be running on a single machine or on several machines in a network environment. Several standard protocols have been developed to address these requirements. This communication is referred as interprocess communication.

DDE – Dynamic Data Exchange is among earlier versions of such data transfer protocols. It sends data to & from applications. This protocol can be used for one time data exchange or progressive data exchange. DDE was first introduced in 1987 & since it uses Windows Messaging Layer, therefore it still works in modern versions of Microsoft operating systems.

DDE – supports several Data Exchange formats & custom formats could be defined for specialized inter-process communications.