Imagick::getImageImagick::getImageAlphaChannel
(No version information available, might only be in SVN)
Imagick::getImageAlphaChannel — Gets the image alpha channel
说明
int Imagick::getImageAlphaChannel
( void
)
Gets the image alpha channel value. The returned value is one of the alpha channel constants. 此方法在Imagick基于ImageMagick 6.4.0以上版本编译时可用。
返回值
Returns a constant defining the current alpha channel value. Refer to this list of alpha channel constants.
错误／异常
错误时抛出 ImagickException。
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Imagick::getImageAlphaChannel - [0 notes]
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