BM_GETCHECK Overview  Group

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

BM_GETCHECK 

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

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

 

Parameters

This message has no parameters.

Return Values

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

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

See Also

BM_GETSTATE, BM_SETCHECK

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