hi,
I have attached a file with this. Copy the file to ur project and try.
In that file there could be one form and class module.
In that class module there could be a line
ret = ClientToScreen(Form7.Combo3.hwnd, pt)
Form7 - form name
combo3 - combo box name
change it as ur requirement.
while running ur form press the arrow key to view the columns in the combo box
al the best
Shailu