TB_ISBUTTONCHECKED message

Determines whether the specified button in a toolbar is checked.

Parameters

wParam

Command identifier of the button.

lParam

Must be zero.

Return value

Returns nonzero if the button is checked, or zero otherwise.

Requirements

Requirement	Value
Minimum supported client	Windows Vista [desktop apps only]
Minimum supported server	Windows Server 2003 [desktop apps only]
Header	Commctrl.h