This message is sent by an application to set the check state of a radio button or check box.
At a Glance
| Header file: | Winuser.h |
| Windows CE versions: | 1.0 and later |
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. |
Return Values
This message always returns zero.
Remarks
The BM_SETCHECK message has no effect on push buttons.
See Also