BM_GETCHECK

BM_GETCHECK

wParam = 0; /* not used, must be zero */

lParam = 0; /* not used, must be zero */

An application sends a BM_GETCHECK message to retrieve the check state of a radio button or a check box.

Parameters

This message has no parameters.

Return Value

The return value from a button created with the BS_AUTOCHECKBOX, BS_AUTORADIOBUTTON, BS_AUTO3STATE, BS_CHECKBOX, BS_RADIOBUTTON, or BS_3STATE style may be one of the following values:

Value Meaning

0 Button state is unchecked.
1 Button state is checked.
2 Button state is indeterminate (applies only if the button has the BS_3STATE or BS_AUTO3STATE style).

If the button has any other style, the return value is 0.

See Also

BM_GETSTATE, BM_SETCHECK