How do we use the Form_Start
When you want your code to run when you open a form or while a form is open
you use the procedure Form_Statrt.
The example below shows the basic commands.
lib
proc Form_Start()
f = TopForm() {this command brings the form’s id}
pnl = PByName(f;“CUSTOMER“) {this command brings the form’s panel id}
tbl = TByName(pnl;“CUSTOMER“) {this command brings the table’s id}
cust_id = TGetFld(tbl;”LAST_NAME”) {this command brings a table’s column data}
write your code (code for checking something or code for a lookup field)
…….
…….
…….
…….
end