Windows Shell 学习记录 1

Guidance for Implementing In-Process Extensions - Win32 apps | Microsoft Docs

In-process extensions are loaded into any processes that trigger/invoke them.
The Shell namespace is used by many Shell operations.
extension & host application (process).

common language runtime (CLR) = .NET Framework = managed code.
runtimes: CLR, Java, Visual Basic, JavaScript/ECMAScript, Delphi, and the C/C++.

Version Conflicts

in-process/out-of-process extension.
application may have (shell) managed-code/extension/managed-extension.
when application has managed code, could call it managed application.
managed code and its attendant CLR dependency.
process of application.

Performance Issues

performance penalty: memory usage, CPU usage, elapsed time, or even address space consumption
high-impact runtime

Acceptable Uses of Managed Code and Other Runtimes

Acceptable Uses of (extension) Managed Code and Other Runtimes
always acceptable (to use managed code and other runtimes) when implement out-of-process extensions.