Okay, here's the answer we came up with


** Return window handle of VB app
lnhwnd = is_run([Form1])

lclstring = "Did you get this message"


sendmsg = RegFN('SendMessage', 'III@C', 'I')

retval = CallFN(sendmsg, lnhwnd, 12, 0, @lclstring)

We took this farther,

The VB guys are writing the window handle of a textbox to an ini file, I'm opening the ini file and pulling that value out. I place that value in the lnhwnd variable and we can write directly to the textbox value.

Thanx for your help.