PowerBuilder Prototyper Links :
LInks to determine if your application is already running
http://www.rgagnon.com/pbdetails/pb-0064.html
http://www.pbdr.com/pbtips/ap/onlyonce.htm
http://www.escape.ca/~pboud/powerbuilder/powerbuilder_faq.html#2.29
http://202.96.105.7/ywjswd/6.htm
GetFullState/SetFullState
For example, this expression gets all the data in the DataWindow:
Object dwdata[] [] = dw_1.getObject("Data").getProperty("Primary")