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TranslateMessage info  Overview  Group

The TranslateMessage function translates virtual-key messages into character messages. The character messages are posted to the calling threadís message queue, to be read the next time the thread calls the GetMessage or PeekMessage function.

BOOL TranslateMessage(

    CONST MSG *lpMsg 

// address of structure with message



Points to an MSG structure that contains message information retrieved from the calling threadís message queue by using the GetMessage or PeekMessage function.

Return Values

If the message is translated (that is, a character message is posted to the threadís message queue), the return value is nonzero.

If the message is WM_KEYDOWN, WM_KEYUP, WM_SYSKEYDOWN, or WM_SYSKEYUP, the return value is nonzero, regardless of the translation.

If the message is not translated (that is, a character message is not posted to the threadís message queue), the return value is zero.


The TranslateMessage function does not modify the message pointed to by the lpMsg parameter.

WM_KEYDOWN and WM_KEYUP combinations produce a WM_CHAR or WM_DEADCHAR message. WM_SYSKEYDOWN and WM_SYSKEYUP combinations produce a WM_SYSCHAR or WM_SYSDEADCHAR message.

TranslateMessage produces WM_CHAR messages only for keys that are mapped to ASCII characters by the keyboard driver.

If applications process virtual-key messages for some other purpose, they should not call TranslateMessage. For instance, an application should not call TranslateMessage if the TranslateAccelerator function returns a nonzero value.

See Also


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