Shell Extension

Shell Extension Nedir ?
Açıklaması şöyle.

A shell extension is a COM object that adds some kind of functionality to the Windows shell (Explorer).

There are two parts in the term "shell extension." Shell refers to Explorer, and extension refers to code you write that gets run by Explorer when a predetermined event happens (e.g., a right-click on a .DOC file). So a shell extension is a COM object that adds features to Explorer.

A shell extension is an in-process server that implements some interfaces that handle the communication with Explorer.

There are many types of shell extensions, each type being invoked when different events happen.

Bazı tipler şöyle.

Context Menu Handler - Dosyay sağ tıklayınca
Property Sheet Handler - Properties penceresi açılınca
Drag and Drop Handler - Sağ tıklama sürek bırak yapınca
Drop Handler - Dosyaya sürükle bırak yapınca
QueryInfo Handler - Fare bir nesne üzerinde yüzerse