Further input welcome, but here's mine: The second SendMessage parameter is a constant that is to mean something to the window you're sending a message to. There are standard messages and custom messages, custom messages being particular to the class of the receiving window. A lot of standard message constants appear in winuser.h from the Windows Platform SDK or a newer resource. Many, though not all of these begin with "WM_" (for Window Message I presume). Custom message constants tend to begin with prefixes denoting the class of window to which they apply: EM_ for edit windows, LB_ for listboxes, etc. Scan winuser.h for comments containing the word "messages" to find the constants defined there. The problem with custom windows, though, is that there is, to my knowledge, no central directory of messages you can send to each possible window class. Sometimes, firing off a Google or MSDN search for "sendMessage" and a few words related to your class of interest, or maybe even the class name itself, can net some useful results. Even then though, a lot of results come back with just constant names and not their numerical values. Finding the values for the constants can sometimes take more searches. On Thu, Oct 25, 2007 at 01:04:53PM -0700, Bryan Garaventa wrote: Does anyone know where I can get a list or where there is a reference guide to use the SendMessage function? This appears to be a Windows command, and JAWS documentation about it, simply states that the user should consult a programming manual... Whichever that is... For instance, the following usage will maximize the current application window. Script MaximizeCurrentAppWindow() var int Rslt SendMessage (GetAppMainWindow (GetFocus ()), 274, 61488, Rslt) EndScript I have no idea how to find the numerical values that cause this to happen though, or what exactly they mean. Does anyone know anything about this capability? Or where I could learn more? Thanks, Bryan __________? View the list's information and change your settings at http://www.freelists.org/list/jawsscripts -- Doug Lee, Access Technology Programmer SSB BART Group mailto:doug.lee@xxxxxxxxxxxxxxxx http://www.ssbbartgroup.com "While they were saying among themselves it cannot be done, it was done." --Helen Keller __________ View the list's information and change your settings at http://www.freelists.org/list/jawsscripts