Windows® 2000 Device Driver Book: A Guide for Programmers, Second Edition, The

Code Example: A WinDbg Extension

This example shows how to write a simple WinDbg extension DLL. The code is contained on the accompanying CD and on the book's web site: http://www.W2KDriverBook.com. The purpose of the extension is to provide one command: !devext that formats and displays the driver's Device Extension data structure.

DBG.C

All the code for this extension resides in a single source file. Of course, the file #includes other files, but they are sourced from elsewhere, such as the driver.

HEADER

This part of the code contains the definitions for the extension DLL.

 // The ordering of #include files is important #include <ntddk.h> #include <windef.h> // The following items are from WINBASE.H // in the Win32 SDK. (WINBASE.H itself ...