hwndDlg (HWND) - input

      Parent-window handle.

    idItem (ULONG) - input

      Identity of the child window whose text is to be queried.

      It must be greater or equal to 0 and less or equal to 0xFFFF.

    lRetLen (LONG) - returns

      Length of text.

    • Error occurred Other
        Length of text.


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