BM_SETCHECK

A version of this page is also available for

Windows Embedded CE 6.0 R3

4/8/2010

This message is sent by an application to set the check state of a radio button or check box.

Syntax

BM_SETCHECK wParam = (WPARAM) fCheck, 
    lParam = 0;

Parameters

• fCheck
  Specifies the check state. It is one of the following values.

  Value	Description
  BST_CHECKED	Sets the button state to checked.
  BST_INDETERMINATE	Sets the button state to grayed, indicating an indeterminate state. Use this value only if the button has the BS_3STATE or BS_AUTO3STATE style.
  BST_UNCHECKED	Sets the button state to unchecked.

• lParam
  Not used.

Return Value

This message always returns zero.

Remarks

The BM_SETCHECK message has no effect on push buttons.

Requirements

See Also

Reference

BM_GETCHECK
BM_GETSTATE
BM_SETSTATE
Buttons Messages