Because my  MinGW Cross Compiling Environment includes compiled Qt4, after successfully compiled poppler-0.6.13 (with the Poppler Qt4 interface library, libpoppler-qt4), I decided to compile the last version of DiffPDF, after some effort, the Win32 Static version is out, is only 4M an only one exe file, without any library.

Feel free to download the last version from DiffPDF Win32 binary download page.

P.S. Change log of  1.1.5,

Slightly changed the .pro file to make it a tiny bit more helpful.

Added a Help button and separated Help and About information.

Updated the README for Mac users (thanks to Dirk Loss for the info).

It is a real case, and the author of Turn on Measure Tool in Reader for 25,000 PDF documents has been my customer, he bought my software Batch ReaderEnable, because he has already bought the license of Adobe Acrobat, so he just payed extra USD$39, and he can easily converted 25,000 PDF documents.
And, I’d like to correct something in his requirement,

I work for a city government and I have 25,000 scanned maps as PDF documents. Our users (they have Acrobat Reader(should be Adobe Reader) would like to be able to use the measure tool to measure distances on the maps.
From my research, it seems I need to turn on “Enable Usage Rights in Adobe Reader”(should be “Enable For Commenting and Analysis In Adobe Reader” aka “Reader Enable” and in Adobe Acrobat X Pro, it is called “Enable Commenting & Measuring…” ) in order for that tool to work in Adobe reader. Also from my research, it seems there is no way to automate, or batch process, these action for the 25,000 PDF files. There are some references on the web that LiveCycle can do this(Yes, Adobe LiveCycle can do it, but it is very expensive), but nothing confirmed, and when I called Adobe support they said in face, it was NOT possible to batch “enable usage rights“(“Enable Commenting & Measuring”). At. All. Period.
…

btw, Batch ReaderEnable Updates to Support Adobe Acrobat X Pro

My Batch ReaderEnable software supports batch convert PDF files with one of the following features,

• Enable For Commenting and Analysis In Adobe Reader(aka Reader Enable and called “Enable Commenting & Measuring…” in Adobe Acrobat X Pro)
• Enable TypeWriter Tool in Adobe Reader(aka TypeWriter Enable, called “Enable Adding Text in Document (that are not fillable forms)…” in Adobe Acrobat X Pro
• Enable usage rights for Adobe Reader (aka Usage Rights Enable called “Enable Additional Features…” in Adobe Acrobat X Pro)

btw, Batch ReaderEnable has three editions,

• GUI Version(Window Version)
• Console Version
• Hotfolder Automation/File Monitor/Folder monitor Version, automatically monitor the selected folder(with sub-folder) and convert the new PDF files in the folder

• If want to buy GUI Version and Console Version, please click here, and If you want to Buy Hotfolder version, please visit here.