ReplyMessage function (winuser.h)

Article
02/22/2024

Replies to a message sent from another thread by the SendMessage function.

Syntax

BOOL ReplyMessage(
  [in] LRESULT lResult
);

Parameters

[in] lResult

Type: LRESULT

The result of the message processing. The possible values are based on the message sent.

Return value

Type: BOOL

If the calling thread was processing a message sent from another thread or process, the return value is nonzero.

If the calling thread was not processing a message sent from another thread or process, the return value is zero.

Remarks

By calling this function, the window procedure that receives the message allows the thread that called SendMessage to continue to run as though the thread receiving the message had returned control. The thread that calls the ReplyMessage function also continues to run.

If the message was not sent through SendMessage or if the message was sent by the same thread, ReplyMessage has no effect.

Examples

For an example, see Sending a Message.

Requirements

Requirement	Value
Minimum supported client	Windows 2000 Professional [desktop apps only]
Minimum supported server	Windows 2000 Server [desktop apps only]
Target Platform	Windows
Header	winuser.h (include Windows.h)
Library	User32.lib
DLL	User32.dll
API set	ext-ms-win-ntuser-message-l1-1-2 (introduced in Windows 10, version 10.0.10240)