just do IT

摘要： I learned from Tomas's post that newer version windbg can't be downloaded from microsoft directly anymore. To get newer windbg, we have to download the huge 620 mb WDK iso and extract windbg installer... 阅读全文

摘要： In this post, I'll summarize some features that make directshow stand out, from a developer's point of view.The architecture of directshow is:The core of directshow framework is the box in the center.... 阅读全文

摘要： 1. View graph When we render a media file, directshow uses intelligent connect to build a working graph for us. It may add some filters implicitly if necessary. From my perspective, it all happens tra... 阅读全文

摘要： I've used freecommander for years. It greatly improves my efficiency. Unfortunately, for some unkonwn reasons, my freecommander configuration file get corrupted after my machine power down unexpectedl... 阅读全文

摘要： The life cycle of dialog, transaction and message are rather complicated, and they usually overlap. 阅读全文

摘要： Having used consolas font for a period, I felt very comfortable with it. I've used it in putty, vim, visual studio. And I tried to use it in windows console (cmd.exe) by following scott's post, Using ... 阅读全文

摘要： As described in rfc3261, sip is a layered protocol. Its layers are shown in the image below.Unlike other sophisicated sip libiraies, exosip, pjsip, mjsip, which implement all layers of sip protocol, o... 阅读全文

摘要： In the previous post, native programming on android, I showed how to use code sourcery toolchain to do native programming on android. But in that way, we must link c library statically into our applic... 阅读全文

摘要： I debugged a .net 1.1 based windows application which exits silently upon start up. The problem itself is trivial and not worth mentioning. What I want to say is there is a subtle point about sos.dll ... 阅读全文

摘要： Question:Give an O(n squared)-time algorithm to find the longest monotonically increasing subsequence of a sequence of n numbers.Answer:A brute-force approach is enumerate all subsequences of the n nu... 阅读全文