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BM_GETCHECK message

Gets the check state of a radio button or check box. You can send this message explicitly or use the Button_GetCheck macro.

Parameters

wParam

Not used; must be zero.

lParam

Not used; must be zero.

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 can be one of the following.

Return codeDescription
BST_CHECKED

Button is checked.

BST_INDETERMINATE

Button is grayed, indicating an indeterminate state (applies only if the button has the BS_3STATE or BS_AUTO3STATE style).

BST_UNCHECKED

Button is cleared

 

Remarks

If the button has a style other than those listed, the return value is zero.

Requirements

Minimum supported client

Windows 2000 Professional [desktop apps only]

Minimum supported server

Windows 2000 Server [desktop apps only]

Header

Winuser.h (include Windows.h)

See also

Reference
BM_GETSTATE
BM_SETCHECK

 

 

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