Summary: The ApiViewer, an offline mirror of this reference, is available for download in two versions: demo and full. In the full version, offline VFP database contains descriptions and declarations for almost 1000 API functions currently available on the web site. It also includes more than 250 VFP code samples showing how to use API calls. A list of Win32 constants, about 50 thousand records, is a bonus.
For archive file: unpack all files from the archive to a folder and start either APIVIEWER8.EXE or APIVIEWER9.EXE, depending on VFP version installed on your computer. The executables are completely functional and the database contains about a quarter of the records that come with a full version.
Offline VFP database stores descriptions and declarations for almost 1000 API functions that currently available on the web site. It also contains about 250 VFP code samples, good to learn basics of Windows programming in Visual FoxPro.
The list of Win32 constants, about 50 thousand records, is a bonus. Whenever you get confused with where to find values for LOAD_LIBRARY_AS_DATAFILE or for WM_QUIT, it comes helpful.
The database stays up to date with the web site due to the Internet Update functionality included in the ApiViewer.
The shell (top-level form) is simple and easy to operate.
Descriptions of API functions and code samples are displayed in the Web Browser control. All web pages are generated on the fly from ApiViewer database records. Through the BeforeNavigate2 Event the Web control interacts with other controls on the form.
The Edit box at the bottom is used to accumulate whatever you want to copy and paste: declarations, #DEFINE statements, program code fragments.
For each function or a group of functions, a list of available code samples is displayed.
The registered user gets an access to more than 250 VFP code samples from more than 500 samples available online.
When code sample is displayed in the Web Browser control, each API function inside has HREF link to its description. These links are also generated on the fly.
Searchable list of Windows constants hardly needs any explanation at all. The keyword can be any part of a constant. Use % as a wildcard character.
Credits: PHP (4.4.9), an HTML-embedded scripting language,
MySQL (5.1.55-log), the Open Source standard SQL database,
AceHTML Freeware
Version 4, freeware HTML Editor of choice. Hosted by Korax Online Inc.
Enter your email address in the first textbox. The textbox has Licensed To caption. 
Open Help menu on the main form and click on Check for Database Updates menu item. Proceed with the update.
The database update requires just a mouse click. The ApiViewer sends several HTTP requests to a PHP script on the News2News server.