The key is to check if the form variable is empty or not like:

IF ! EMPTY(oRequest.form('r1b2'))
    oResponse.Redirect(oProp.ScriptPath+[?action=r1b2routine])
ENDIF

This works for Submit buttons. You could also change to type Button in the HTML template and shoot off custom Javascript(that could execute AVFP methods) from each of the buttons.
I'm working on AVFP v.3 this weekend and next weekend in between other activities...
>Hi Claude
>
>I have a question about ActiveVFP.
>
>On a page I have a form with about 5 buttons - Butt1, butt2 etc.
>with name=button1, button2 etc and value = but1, but2 etc.
>
>All buttons are in the single form ":
>form method="POST" action=" <%=oProp.ScriptPath +[?action=buttonclicked] ">
>
>

><form method="POST" action="&lt;%=oProp.ScriptPath +[?action=buttonclicked]  ">
>  <div style="position: absolute; top: 48; left: 201; width: 505; height: 50; z-index:1">
>    <button name="r1b1" type="submit" style="width: 125; height: 22; font-family: Times New Roman; font-size: 10pt; font-style: italic; color: #A50400; background-color: #E7E7E7" value="but1">
>    Home</button>
>    <button name="r1b2" type="submit" style="width: 125; height: 22; font-family: Times New Roman; font-size: 10pt; font-style: italic; color: #A50400; background-color: #E7E7E7" value="but2">
>    About</button>
>    <button name="r1b3" type="submit" style="width: 125; height: 22; font-family: Times New Roman; font-size: 10pt; font-style: italic; color: #A50400; background-color: #E7E7E7" value="but3">
>    Wiki</button>
>    <button name="r1b4" type="submit" style="width: 125; height: 22; font-family: Times New Roman; font-size: 10pt; font-style: italic; color: #A50400; background-color: #E7E7E7" value="but4">
>    Documents</button>
>
>  </div>
></form>
>
>

>
>My question is :
>
>How to find out which button was clicked?
>
>On all your sample pages I find only single submit buttons and those pages with multiple buttons have separate forms for each submit button.
>
>Also I tried calling ?action=aspvars from the button and got an error!!
>
>I finally found this and fixed it by using TRANSFORM() for the following code in activevfp.prg:
>
>

>lcVar =   TRANSFORM(THIS.oRequest.FORM(lcFormVar))
>lcSTR=lcSTR+[<TR><TD><b> ]+ TRANSFORM(lcFormVar) +[ </b></TD><TD> ]+crlf;
>		+lcVar +[</TD></TR>]+crlf
>

>
>This fixed the error but does not tell me which button was clicked.
>
>Any help?
>
>Thanks
>
>Bernard.
>
>ps. Awaiting ActiveVFP3 for Win2003 testing.