How to use the wand.cdefs.wandtypes.c_magick_char_p function in Wand

lib.MagickGetImageEndian = None
    lib.MagickGetImageDelay.argtypes = [c_void_p]
    lib.MagickGetImageDelay.restype = c_size_t
    lib.MagickGetImageDepth.argtypes = [c_void_p]
    lib.MagickGetImageDepth.restype = c_size_t
    lib.MagickGetImageDispose.argtypes = [c_void_p]
    lib.MagickGetImageDispose.restype = c_int
    lib.MagickGetImageDistortion.argtypes = [
        c_void_p, c_void_p, c_int, POINTER(c_double)
    ]
    lib.MagickGetImageDistortion.restype = c_bool
    if is_im_7:
        lib.MagickGetImageFeatures.argtypes = [c_void_p, c_size_t]
        lib.MagickGetImageFeatures.restype = c_void_p
    lib.MagickGetImageFilename.argtypes = [c_void_p]
    lib.MagickGetImageFilename.restype = c_magick_char_p
    lib.MagickGetImageFormat.argtypes = [c_void_p]
    lib.MagickGetImageFormat.restype = c_magick_char_p
    lib.MagickGetImageFuzz.argtypes = [c_void_p]
    lib.MagickGetImageFuzz.restype = c_double
    lib.MagickGetImageGamma.argtypes = [c_void_p]
    lib.MagickGetImageGamma.restype = c_double
    lib.MagickGetImageGravity.argtypes = [c_void_p]
    lib.MagickGetImageGravity.restype = c_int
    if is_im_6:
        lib.MagickGetImageGreenPrimary.argtypes = [
            c_void_p, POINTER(c_double), POINTER(c_double)
        ]
    else:
        lib.MagickGetImageGreenPrimary.argtypes = [
            c_void_p, POINTER(c_double), POINTER(c_double), POINTER(c_double)
        ]

lib.PixelGetBlue.argtypes = [c_void_p]
    lib.PixelGetBlue.restype = c_double
    lib.PixelGetBlueQuantum.argtypes = [c_void_p]
    lib.PixelGetBlueQuantum.restype = QuantumType
    lib.PixelGetColorAsNormalizedString.argtypes = [c_void_p]
    lib.PixelGetColorAsNormalizedString.restype = c_magick_char_p
    lib.PixelGetColorAsString.argtypes = [c_void_p]
    lib.PixelGetColorAsString.restype = c_magick_char_p
    lib.PixelGetColorCount.argtypes = [c_void_p]
    lib.PixelGetColorCount.restype = c_size_t
    lib.PixelGetCyan.argtypes = [c_void_p]
    lib.PixelGetCyan.restype = c_double
    lib.PixelGetCyanQuantum.argtypes = [c_void_p]
    lib.PixelGetCyanQuantum.restype = QuantumType
    lib.PixelGetException.argtypes = [c_void_p, POINTER(c_int)]
    lib.PixelGetException.restype = c_magick_char_p
    lib.PixelGetExceptionType.argtypes = [c_void_p]
    lib.PixelGetExceptionType.restype = c_int
    lib.PixelGetFuzz.argtypes = [c_void_p]
    lib.PixelGetFuzz.restype = c_double
    lib.PixelGetGreen.argtypes = [c_void_p]
    lib.PixelGetGreen.restype = c_double
    lib.PixelGetGreenQuantum.argtypes = [c_void_p]
    lib.PixelGetGreenQuantum.restype = QuantumType
    lib.PixelGetHSL.argtypes = [c_void_p,
                                POINTER(c_double),
                                POINTER(c_double),
                                POINTER(c_double)]
    lib.PixelGetIndex.argtypes = [c_void_p]
    lib.PixelGetIndex.restype = QuantumType
    lib.PixelGetMagenta.argtypes = [c_void_p]
    lib.PixelGetMagenta.restype = c_double

lib.DrawGetStrokeDashOffset.argtypes = [c_void_p]
    lib.DrawGetStrokeDashOffset.restype = c_double
    lib.DrawGetStrokeLineCap.argtypes = [c_void_p]
    lib.DrawGetStrokeLineCap.restype = c_int
    lib.DrawGetStrokeLineJoin.argtypes = [c_void_p]
    lib.DrawGetStrokeLineJoin.restype = c_int
    lib.DrawGetStrokeMiterLimit.argtypes = [c_void_p]
    lib.DrawGetStrokeMiterLimit.restype = c_size_t
    lib.DrawGetStrokeOpacity.argtypes = [c_void_p]
    lib.DrawGetStrokeOpacity.restype = c_double
    lib.DrawGetStrokeWidth.argtypes = [c_void_p]
    lib.DrawGetStrokeWidth.restype = c_double
    lib.DrawGetFont.argtypes = [c_void_p]
    lib.DrawGetFont.restype = c_magick_char_p
    lib.DrawGetFontFamily.argtypes = [c_void_p]
    lib.DrawGetFontFamily.restype = c_magick_char_p
    lib.DrawGetFontResolution.argtypes = [
        c_void_p, POINTER(c_double), POINTER(c_double)
    ]
    lib.DrawGetFontResolution.restype = c_uint
    lib.DrawGetFontSize.argtypes = [c_void_p]
    lib.DrawGetFontSize.restype = c_double
    lib.DrawGetFontStyle.argtypes = [c_void_p]
    lib.DrawGetFontStyle.restype = c_int
    lib.DrawGetFontWeight.argtypes = [c_void_p]
    lib.DrawGetFontWeight.restype = c_size_t
    lib.DrawGetFontStretch.argtypes = [c_void_p]
    lib.DrawGetFontStretch.restype = c_int
    lib.DrawGetTextAlignment.argtypes = [c_void_p]
    lib.DrawGetTextAlignment.restype = c_int
    lib.DrawGetTextAntialias.argtypes = [c_void_p]
    lib.DrawGetTextAntialias.restype = c_int

c_void_p, c_char_p, POINTER(c_size_t)
    ]
    lib.MagickGetImageProperties.restype = POINTER(c_char_p)
    lib.MagickGetInterlaceScheme.argtypes = [c_void_p]
    lib.MagickGetInterlaceScheme.restype = c_int
    lib.MagickGetOption.argtypes = [c_void_p, c_char_p]
    lib.MagickGetOption.restype = c_char_p
    lib.MagickGetPointsize.argtypes = [c_void_p]
    lib.MagickGetPointsize.restype = c_double
    lib.MagickGetQuantumRange.argtypes = [POINTER(c_size_t)]
    lib.MagickGetSize.argtypes = [c_void_p, POINTER(c_uint), POINTER(c_uint)]
    lib.MagickGetSize.restype = c_int
    lib.MagickQueryConfigureOption.argtypes = [c_char_p]
    lib.MagickQueryConfigureOption.restype = c_magick_char_p
    lib.MagickQueryConfigureOptions.argtypes = [c_char_p, POINTER(c_size_t)]
    lib.MagickQueryConfigureOptions.restype = POINTER(c_magick_char_p)
    lib.MagickQueryFontMetrics.argtypes = [c_void_p, c_void_p, c_char_p]
    lib.MagickQueryFontMetrics.restype = POINTER(c_double)
    lib.MagickQueryFonts.argtypes = [c_char_p, POINTER(c_size_t)]
    lib.MagickQueryFonts.restype = POINTER(c_magick_char_p)
    lib.MagickQueryFormats.argtypes = [c_char_p, POINTER(c_size_t)]
    lib.MagickQueryFormats.restype = POINTER(c_magick_char_p)
    lib.MagickQueryMultilineFontMetrics.argtypes = [
        c_void_p, c_void_p, c_char_p
    ]
    lib.MagickQueryMultilineFontMetrics.restype = POINTER(c_double)
    lib.MagickRemoveImageProfile.argtypes = [
        c_void_p, c_char_p, POINTER(c_size_t)
    ]
    lib.MagickRemoveImageProfile.restype = POINTER(c_ubyte)
    lib.MagickSetAntialias.argtypes = [c_void_p, c_int]
    lib.MagickSetAntialias.restype = c_int

lib.MagickGetImageArtifact.argtypes = [c_void_p, c_char_p]
    lib.MagickGetImageArtifact.restype = c_magick_char_p
    lib.MagickGetImageArtifacts.argtypes = [
        c_void_p, c_char_p, POINTER(c_size_t)
    ]
    lib.MagickGetImageArtifacts.restype = POINTER(c_char_p)
    lib.MagickGetImageProfile.argtypes = [
        c_void_p, c_char_p, POINTER(c_size_t)
    ]
    lib.MagickGetImageProfile.restype = POINTER(c_ubyte)
    lib.MagickGetImageProfiles.argtypes = [
        c_void_p, c_char_p, POINTER(c_size_t)
    ]
    lib.MagickGetImageProfiles.restype = POINTER(c_char_p)
    lib.MagickGetImageProperty.argtypes = [c_void_p, c_char_p]
    lib.MagickGetImageProperty.restype = c_magick_char_p
    lib.MagickGetImageProperties.argtypes = [
        c_void_p, c_char_p, POINTER(c_size_t)
    ]
    lib.MagickGetImageProperties.restype = POINTER(c_char_p)
    lib.MagickGetInterlaceScheme.argtypes = [c_void_p]
    lib.MagickGetInterlaceScheme.restype = c_int
    lib.MagickGetOption.argtypes = [c_void_p, c_char_p]
    lib.MagickGetOption.restype = c_char_p
    lib.MagickGetPointsize.argtypes = [c_void_p]
    lib.MagickGetPointsize.restype = c_double
    lib.MagickGetQuantumRange.argtypes = [POINTER(c_size_t)]
    lib.MagickGetSize.argtypes = [c_void_p, POINTER(c_uint), POINTER(c_uint)]
    lib.MagickGetSize.restype = c_int
    lib.MagickQueryConfigureOption.argtypes = [c_char_p]
    lib.MagickQueryConfigureOption.restype = c_magick_char_p
    lib.MagickQueryConfigureOptions.argtypes = [c_char_p, POINTER(c_size_t)]

"""
    lib.ClearMagickWand.argtypes = [c_void_p]
    lib.CloneMagickWand.argtypes = [c_void_p]
    lib.CloneMagickWand.restype = c_void_p
    lib.DestroyMagickWand.argtypes = [c_void_p]
    lib.DestroyMagickWand.restype = c_void_p
    lib.IsMagickWand.argtypes = [c_void_p]
    try:
        lib.IsMagickWandInstantiated.argtypes = []
        lib.IsMagickWandInstantiated.restype = c_bool
    except AttributeError:
        lib.IsMagickWandInstantiated = None
        pass
    lib.MagickClearException.argtypes = [c_void_p]
    lib.MagickGetException.argtypes = [c_void_p, POINTER(c_int)]
    lib.MagickGetException.restype = c_magick_char_p
    lib.MagickGetExceptionType.argtypes = [c_void_p]
    lib.MagickGetExceptionType.restype = c_int
    lib.MagickGetIteratorIndex.argtypes = [c_void_p]
    lib.MagickGetIteratorIndex.restype = c_ssize_t
    lib.MagickRelinquishMemory.argtypes = [c_void_p]
    lib.MagickRelinquishMemory.restype = c_void_p
    lib.MagickResetIterator.argtypes = [c_void_p]
    lib.MagickSetFirstIterator.argtypes = [c_void_p]
    lib.MagickSetIteratorIndex.argtypes = [c_void_p, c_ssize_t]
    lib.MagickSetLastIterator.argtypes = [c_void_p]
    lib.MagickWandGenesis.argtypes = []
    lib.MagickWandTerminus.argtypes = []
    lib.NewMagickWandFromImage.argtypes = [c_void_p]
    lib.NewMagickWandFromImage.restype = c_void_p
    lib.NewMagickWand.argtypes = []
    lib.NewMagickWand.restype = c_void_p

:param IM_VERSION: the ImageMagick version number (i.e. 0x0689)
    :type IM_VERSION: :class:`numbers.Integral`

    .. versionadded:: 0.5.0

    """
    lib.ClonePixelIterator.argtypes = [c_void_p]
    lib.ClonePixelIterator.restype = c_void_p
    lib.DestroyPixelIterator.argtypes = [c_void_p]
    lib.DestroyPixelIterator.restype = c_void_p
    lib.IsPixelIterator.argtypes = [c_void_p]
    lib.NewPixelIterator.argtypes = [c_void_p]
    lib.NewPixelIterator.restype = c_void_p
    lib.PixelClearIteratorException.argtypes = [c_void_p]
    lib.PixelGetIteratorException.argtypes = [c_void_p, POINTER(c_int)]
    lib.PixelGetIteratorException.restype = c_magick_char_p
    lib.PixelGetNextIteratorRow.argtypes = [c_void_p, POINTER(c_size_t)]
    lib.PixelGetNextIteratorRow.restype = POINTER(c_void_p)
    lib.PixelSetFirstIteratorRow.argtypes = [c_void_p]
    lib.PixelSetIteratorRow.argtypes = [c_void_p, c_ssize_t]

lib.PixelClearException.argtypes = [c_void_p]
    lib.PixelClearException.restype = c_int
    lib.PixelGetAlpha.argtypes = [c_void_p]
    lib.PixelGetAlpha.restype = c_double
    lib.PixelGetAlphaQuantum.argtypes = [c_void_p]
    lib.PixelGetAlphaQuantum.restype = QuantumType
    lib.PixelGetBlack.argtypes = [c_void_p]
    lib.PixelGetBlack.restype = c_double
    lib.PixelGetBlackQuantum.argtypes = [c_void_p]
    lib.PixelGetBlackQuantum.restype = QuantumType
    lib.PixelGetBlue.argtypes = [c_void_p]
    lib.PixelGetBlue.restype = c_double
    lib.PixelGetBlueQuantum.argtypes = [c_void_p]
    lib.PixelGetBlueQuantum.restype = QuantumType
    lib.PixelGetColorAsNormalizedString.argtypes = [c_void_p]
    lib.PixelGetColorAsNormalizedString.restype = c_magick_char_p
    lib.PixelGetColorAsString.argtypes = [c_void_p]
    lib.PixelGetColorAsString.restype = c_magick_char_p
    lib.PixelGetColorCount.argtypes = [c_void_p]
    lib.PixelGetColorCount.restype = c_size_t
    lib.PixelGetCyan.argtypes = [c_void_p]
    lib.PixelGetCyan.restype = c_double
    lib.PixelGetCyanQuantum.argtypes = [c_void_p]
    lib.PixelGetCyanQuantum.restype = QuantumType
    lib.PixelGetException.argtypes = [c_void_p, POINTER(c_int)]
    lib.PixelGetException.restype = c_magick_char_p
    lib.PixelGetExceptionType.argtypes = [c_void_p]
    lib.PixelGetExceptionType.restype = c_int
    lib.PixelGetFuzz.argtypes = [c_void_p]
    lib.PixelGetFuzz.restype = c_double
    lib.PixelGetGreen.argtypes = [c_void_p]
    lib.PixelGetGreen.restype = c_double

lib.MagickGetAntialias.argtypes = [c_void_p]
    lib.MagickGetAntialias.restype = c_int
    lib.MagickGetBackgroundColor.argtypes = [c_void_p]
    lib.MagickGetBackgroundColor.restype = c_void_p
    lib.MagickGetColorspace.argtypes = [c_void_p]
    lib.MagickGetColorspace.restype = c_int
    lib.MagickGetCompression.argtypes = [c_void_p]
    lib.MagickGetCompression.restype = c_int
    lib.MagickGetCompressionQuality.argtypes = [c_void_p]
    lib.MagickGetCompressionQuality.restype = c_size_t
    lib.MagickGetFont.argtypes = [c_void_p]
    lib.MagickGetFont.restype = c_char_p
    lib.MagickGetGravity.argtypes = [c_void_p]
    lib.MagickGetGravity.restype = c_int
    lib.MagickGetImageArtifact.argtypes = [c_void_p, c_char_p]
    lib.MagickGetImageArtifact.restype = c_magick_char_p
    lib.MagickGetImageArtifacts.argtypes = [
        c_void_p, c_char_p, POINTER(c_size_t)
    ]
    lib.MagickGetImageArtifacts.restype = POINTER(c_char_p)
    lib.MagickGetImageProfile.argtypes = [
        c_void_p, c_char_p, POINTER(c_size_t)
    ]
    lib.MagickGetImageProfile.restype = POINTER(c_ubyte)
    lib.MagickGetImageProfiles.argtypes = [
        c_void_p, c_char_p, POINTER(c_size_t)
    ]
    lib.MagickGetImageProfiles.restype = POINTER(c_char_p)
    lib.MagickGetImageProperty.argtypes = [c_void_p, c_char_p]
    lib.MagickGetImageProperty.restype = c_magick_char_p
    lib.MagickGetImageProperties.argtypes = [
        c_void_p, c_char_p, POINTER(c_size_t)

:type IM_VERSION: :class:`numbers.Integral`

    .. versionadded:: 0.5.0

    """
    is_im_6 = IM_VERSION < 0x700
    is_im_7 = IM_VERSION >= 0x700
    lib.NewDrawingWand.restype = c_void_p
    lib.CloneDrawingWand.argtypes = [c_void_p]
    lib.CloneDrawingWand.restype = c_void_p
    lib.DestroyDrawingWand.argtypes = [c_void_p]
    lib.DestroyDrawingWand.restype = c_void_p
    lib.IsDrawingWand.argtypes = [c_void_p]
    lib.IsDrawingWand.restype = c_int
    lib.DrawGetException.argtypes = [c_void_p, POINTER(c_int)]
    lib.DrawGetException.restype = c_magick_char_p
    lib.DrawClearException.argtypes = [c_void_p]
    lib.DrawClearException.restype = c_int
    lib.DrawAffine.argtypes = [c_void_p, c_void_p]
    if is_im_7:
        lib.DrawAlpha.argtypes = [c_void_p, c_double, c_double, c_int]
    lib.DrawComment.argtypes = [c_void_p, c_char_p]
    lib.DrawComposite.argtypes = [
        c_void_p, c_int, c_double, c_double, c_double, c_double, c_void_p
    ]
    lib.DrawComposite.restype = c_uint
    lib.DrawSetBorderColor.argtypes = [c_void_p, c_void_p]
    lib.DrawSetClipPath.argtypes = [c_void_p, c_char_p]
    lib.DrawSetClipPath.restype = c_int
    lib.DrawSetClipRule.argtypes = [c_void_p, c_uint]
    lib.DrawSetClipUnits.argtypes = [c_void_p, c_uint]
    lib.DrawSetFont.argtypes = [c_void_p, c_char_p]