I want to check the key input for the Text Box so as to prevent a user entering wrong letters or numbers.
Tried the two ways shown in code but does not work for.
Any examples on this method please?
B4X:
Sub RceEd_KeyPress (key)
' MsgBox(key)
' if key = "2" then key = ""
' tmp = RceEd.Text
' if key = "2" then RceEd.Text = tmp
End Sub
Tried the two ways shown in code but does not work for.
Any examples on this method please?