HRESULT value = object.put_indeterminate( v);HRESULT value = object.get_indeterminate(* p);
Default. Check box is not dimmed.
Check box is checked and dimmed.
The IHTMLOptionButtonElement::indeterminate property can be used to indicate whether the user has acted on a control. For example, setting the IHTMLOptionButtonElement::indeterminate to true causes the check box to appear checked and dimmed, indicating an indeterminate state.
The value of the IHTMLOptionButtonElement::indeterminate property acts independently of the values of the IHTMLOptionButtonElement::checked and IHTMLOptionButtonElement::status properties. Creating an indeterminate state is different from disabling the control. Consequently, a check box in the indeterminate state can still receive the focus. When the user clicks an indeterminate control, the indeterminate state turns off and the checked state of the check box toggles.