BM_GETCHECK
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4/8/2010
This message is sent by an application to retrieve the check state of a radio button or check box.
Syntax
BM_GETCHECK wParam = 0;
lParam = 0;
Parameters
- wParam
Not used.
- lParam
Not used.
Return Value
A button created with the BS_AUTOCHECKBOX, BS_AUTORADIOBUTTON, BS_AUTO3STATE, BS_CHECKBOX, BS_RADIOBUTTON, or BS_3STATE returns one of the values described in the following table.
| Value | Description |
|---|---|
BST_CHECKED |
The button is checked. |
BST_INDETERMINATE |
The button is grayed, indicating an indeterminate state (applies only if the button has the BS_3STATE or BS_AUTO3STATE style). |
BST_UNCHECKED |
The button is unchecked. |
If the button has any other style, the return value is zero.
Requirements
| Header | winuser.h |
| Windows Embedded CE | Windows CE 1.0 and later |
| Windows Mobile | Windows Mobile Version 5.0 and later |