ImmIsUIMessage

Undocumented in source but is binding to Windows. You might be able to learn more by searching the web for its name.
  1. alias ImmIsUIMessage = ImmIsUIMessageW
  2. alias ImmIsUIMessage = ImmIsUIMessageA
    version(!Unicode)
    nothrow extern (Windows)
    alias ImmIsUIMessage = ImmIsUIMessageA

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