Limiting the number of characters
You can set the maximum limit of characters is entered with the following function.
ui_textbox_set_maxchar(control, maxchar);
Return: True if successful
Where maxchar is the limit amount in real numbers.
textboxUsername = ui_textbox_create(32, 24, 128, ui_default, "Username");
ui_textbox_set_maxchar(TextboxUsername, 10);
Set the maximum limit to 10 characters for textboxUsername textbox.