How develop infopath controls???

[willies]

1 〠i hope to develop infopath control. how to begin???
2〠i need add some fundition in textbox, how to do it????
thx

 

[S.Y.M. Wong-A-Ton]

Check out these links:
http://blogs.msdn.com/infopath/archive/2004/08/16/215395.aspx
http://blogs.msdn.com/infopath/archive/2004/11/28/271381.aspx
http://blogs.msdn.com/infopath/archive/2004/04/09/110504.aspx