The function %HI_SetFocus allows you to make the graphic object active - sets the focus of activity on it (Control function).

Focus of activity on the graphic object means that the object can be controlled by keyboard. For example: if the focus has an Windows control of Text entry field, pressing keys of the keyboard will insert the characters into it.

The function also allows to set the focus on a tab of Windows control of Tab control type - the parameter refId determines the name of the reference variable of a tab.