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Specifies whether or not the image contains meaningful alpha channel values.
public bool HasMeaningfulAlpha { get; } Public ReadOnly Property HasMeaningfulAlpha As Boolean public bool HasMeaningfulAlpha {get;} @property (nonatomic, assign) BOOL hasMeaningfulAlpha public boolean hasMeaningfulAlpha() get_HasMeaningfulAlpha(); public:property bool HasMeaningfulAlpha {bool get();}
true if at least one alpha channel value is not equal to 0xFF, false if all alpha channel values are equal to 0xFF.
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