[RESOLVED]Sendmessage radio button click

[TTn]

I've looked around here, and found some examples, but still cant get this API to click a radio button. This is stupid, it must be me.


Is this how the API should be called?

lhWndParent = exe.MainWindowHandle.ToInt32
lhWndButton = FindWindowEx(lhWndParent, 0, "Button", "&Continue sieving an old file")
 
SendMessage(lhWndButton, WM_COMMAND, 0, 0)
 
'or 
 
SendMessage(lhWndParent, WM_COMMAND, lhWndButton, 0)

I've tried several variations, and wonder if it's a problem with the recieving application... or me.