WinBroadcastMsg - Parameters

hwndParent (HWND) - input

Parent-window handle.

ulMsgId (ULONG) - input

Message identifier.

mpParam1 (MPARAM) - input

Parameter 1.

mpParam2 (MPARAM) - input

Parameter 2.

flCmd (ULONG) - input

Broadcast message command.

BMSG_POST

Post the message. This value is mutually exclusive with BMSG_SEND and BMSG_POSTQUEUE.
BMSG_SEND
Send the message. This value is mutually exclusive with BMSG_POST and BMSG_POSTQUEUE.
BMSG_POSTQUEUE
Post a message to all threads that have a message queue. This value is mutually exclusive with BMSG_POST and BMSG_SEND. The hwnd parameter of the QMSG structure is set to NULL.
BMSG_DESCENDANTS
Broadcast the message to all the descendants of the hwndParent parameter.
BMSG_FRAMEONLY
Broadcast the message only to windows with a style of CS_FRAME.

rc (BOOL) - returns

Success indicator.

TRUE

Message was sent or posted successfully to all applicable windows
FALSE
Error occurred.

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