The class field of a CONTROL statement in the DIALOG statement must be one of the following types: BUTTON, COMBOBOX, EDIT, LISTBOX, SCROLLBAR, STATIC, or user-defined.

• DIALOG语句中的CONTROL语句的class字段必须为下列类型之一:BUTTON、COMBOBOX、EDIT、LISTBOX、SCROLLBAR、STATIC或用户定义的。