CONTROL SET FOCUS statement

Purpose | Set the keyboard focus to the specified control.
Syntax | CONTROL SET FOCUS hDlg, id&
Remarks | hDlg refers to the dialog that owns the control. id& is the unique control identifier as assigned to the control with a CONTROL ADD statement. The control that owns the focus will receive all keyboard messages. Many controls change their appearance when they receive (and lose) keyboard focus, usually by the display of a "focus rectangle" around or on the control that has keyboard focus. Only one control can have keyboard focus at any moment, and situations can arise where no controls have focus. Controls that include a "notify" style (i.e., %BS_NOTIFY) will receive a notification message when focus is gained or lost. That is, when one such control loses focus, it receives a message to that effect and the control gaining focus may also receive an appropriate focus notification message. When a control gains focus the parent dialog will also be set as the foreground window.
Windows does not guarantee the order in which focus notification messages are dispatched to the control losing focus and the control gaining focus. Applications should not rely on the order in which these types of messages are received.
Restrictions | CONTROL SET FOCUS cannot be used to set the focus of a control in a separate thread.
See also | Dynamic Dialog Tools