I like use Sumatra PDF, because it is a slim, free, open-source PDF reader for Windows. Portable out of the box. and I just notice it has updated to 1.3 on Feb 04, 2011 with many changes,

* improved text selection and copying. We now mimic the way a browser or Adobe Reader works: just select text with mouse and use Ctrl-C to copy it to a clipboard
* Shift+Left Mouse now scrolls the document, Ctrl+Left mouse still creates a rectangular selection (for copying images)
* ‘c’ shortcut toggles continuous mode
* ‘+’ / ‘*’ on the numeric keyboard now do zoom and rotation
* added toolbar icons for Fit Page and Fit Width and updated the look of toolbar icons
* add support for back/forward mouse buttons for back/forward navigation
* 1.2 introduces a new full screen mode and made it the default full screen mode. Old mode was still available but not easily discoverable. We’ve added View/Presentation menu item for new full screen mode and View/Fullscreen menu item for the old full screen mode, to make it more discoverable
* new, improved installer
* improved zoom performance (zooming to 6400% no longer crashes)
* text find uses less memory
* further printing improvements
* translation updates
* updated to latest mupdf for misc bugfixes and improvements
* use libjpeg-turbo library instead of libjpeg, for faster decoding of some PDFs
* updated openjpeg library to version 1.4 and freetype to version 2.4.4
* fixed 2 integer overflows reported by Stefan Cornelius from Secunia Research

I am studying PoDoFo now, and want a better IDE to work with MinGW, after some search, I decided to use Code::Block(aka CB or CodeBlocks). At office I have easily downloaded the Windows setup package, but when I tried to download at home several times without success and the error message is Too many Clients!.
So I uploaded it to my project hosting at Google Code,
please use another mirror.

• codeblocks-10.05-setup.exe   22.2 MB
• codeblocks-10.05mingw-setup.exe   70.6 MB(includes the GCC compiler and GDB debugger from MinGW)
• Another download mirror:codeblocks-10.05mingw-setup.exe   70.6 MB(includes the GCC compiler and GDB debugger from MinGW)

P.S.

Code::Blocks is a open source, cross platform, free C++ IDE built to meet the most demanding needs of its users. It is designed to be very extensible and fully configurable.
Finally, an IDE with all the features you need, having a consistent look, feel and operation across platforms.
Built around a plugin framework, Code::Blocks can be extended with plugins. Any kind of functionality can be added by installing/coding a plugin. For instance, compiling and debugging functionality is already provided by plugins!

libjpeg is a library written entirely in C which contains a widely-used implementation of a JPEG decoder, JPEG encoder and other JPEG utilities. This library is maintained by the Independent JPEG Group.

libjpeg-turbo is a high-speed version of libjpeg for x86 and x86-64 processors which uses SIMD instructions (MMX, SSE2, etc.) to accelerate baseline JPEG compression and decompression. libjpeg-turbo is generally 2-4x as fast as the unmodified version of libjpeg, all else being equal(for non-grayscale JPEG compression and decompression, libjpeg-turbo is between 1.8x and 4.5x as fast as libjpeg v6b).

libjpeg-turbo was originally based on libjpeg/SIMD by Miyasaka Masaru, but the TigerVNC and VirtualGL projects made numerous enhancements to the codec, including improved support for Mac OS X, 64-bit support, support for 32-bit and big endian pixel formats (RGBA, ABGR, etc.), accelerated Huffman encoding/decoding, and various bug fixes. The goal was to produce a fully open source codec that could replace the partially closed source TurboJPEG/IPP codec used by VirtualGL and TurboVNC. libjpeg-turbo generally achieves 80-120% of the performance of TurboJPEG/IPP. It is faster in some areas but slower in others(for non-grayscale JPEG compression and decompression, libjpeg-turbo 64-bit is between 80% and 118% as fast as TurboJPEG/IPP. libjpeg-turbo 32-bit is between 60% and 93% as fast as TurboJPEG/IPP. libjpeg-turbo’s primary weakness relative to TurboJPEG/IPP is 32-bit performance, particularly on Intel processors and even more particularly on legacy Intel processors. This is largely due to the Huffman encoder/decoder running out of registers and having to swap some inner loop variables back and forth from memory).

In one word, libjpeg-turbo is a fork of libjpeg that uses SIMD instructions to accelerate JPEG encoding and decoding.

btw, projects such as Mozilla and fedora switched to libjpeg-turbo in 2010.

References,
libjpeg-turbo HomePage
Independent JPEG Group’s JPEG software release 6b
with x86 SIMD extension for IJG JPEG library version 1.02
Independent JPEG Group(IJG)