Grab Screen from Mac OS X Lion(10.7)

Mac OS X Lion seams disable OpenGL screen. So, glReadPixel can’t get screen shot.
The solution to grab the screen:
CGImageRef image = CGDisplayCreateImage(kCGDirectMainDisplay);

iOS 5 storyboard tutorial reference.

http://kurrytran.blogspot.com/2011/07/simple-ios-5-tutorial-using-storyboard.html

cow, 改什麼storyboard…..xib 沒得用了。maintain 很麻煩。

http://chrislee.kr/wp/2011/07/24/mainwindow-xib-absence-in-xcode-4-2-beta-4-with-ios-5-sdk/

TCP 常見問題 1 : 如何知道對方不正常斷線？

問題: Peer A & Peer B 已經建立連線。但是Peer B突然電源線被拉掉，也沒電池撐著，或是突然B端的網路線被拉掉。這時候Peer A 的應用程式也沒有對B進行資料的收送。等到下次要搜送資料的時候，卻卡在send recv or read/write 當中。怎辦？
解法；利用 tcp keep alive.在socket 建立的時候 加上
int optval = 1 ;
setsockopt(sockfd, SOL_SOCKET, SO_KEEPALIVE, (const S8 *)&optval, sizeof(optval))
optval = 10 ; // seconds
setsockopt(sockfd, IPPROTO_TCP, TCP_KEEPALIVE, (const S8 *)&optval, sizeof(optval))
optval 設定成 timeout 的時間。這個timeout發生的時候， tcp 會送一個 SYN 給對方。

http://tldp.org/HOWTO/TCP-Keepalive-HOWTO/programming.html#setsockopt

Power Point VBA Runtime Error

http://blogs.msdn.com/b/larryosterman/archive/2005/08/25/456344.aspx

to minimize Javascript codes

1.YUI Compressor (from Yahoo)
2.JSMin (by Douglas Crockford)
3.ShrinkSafe (from Dojo library)
4.Packer (by Dean Edwards)

386 ppc to universal binary

LIPO(1) LIPO(1)

NAME
lipo – create or operate on universal files

SYNOPSIS
lipo [-info] [-detailed_info] [-arch arch_type input_file] … [ input_file] … [-arch_blank arch_type]
[-create] [-thin arch_type] [-replace arch_type filename] … [-remove arch_type] … [-extract arch_type]
… [-extract_family arch_type] … [-verify_arch arch_type ...] [-output output_file] [-segalign
arch_type value] …

web browser sink document event

http://support.microsoft.com/kb/246247

install ldid

get binary from

http://svn.telesphoreo.org/trunk/data/ldid/ldid-1.0.610.tgz

% tar -zxf ldid-1.0.610.tgz
% cd ldid-1.0.610
% g++ -I . -o util/ldid{,.cpp} -x c util/{lookup2,sha1}.c
% sudo cp -a util/ldid /usr/bin

mac/iphone/obj-c programming note

Every method or function whose name includes “new”, “alloc”, “Create” or “copy” requires a balancing release/free