Method XbpBitmap():setProperty() Foundation
Modifies a property of an image.
:setProperty( <cPropertyName>, <xValue> ) --> lSuccess
The method returns .T. (TRUE) if the property was modified successfully. Otherwise, the return is .F. (FALSE).
The method :setProperty() modifies a property in an image. Image properties are stored in the image file and typically contain supplemental information, such as the name of the author, a copyright notice or the application which created the file. This information may be used for searching or for categorizing images in image-processing applications.
If the value NIL is passed in the <xValue> parameter, the specified property is removed from the image.
Image properties are persisted only when the image is written to disk. In other words, changing a meta data property using :setProperty() has no effect until the image is saved using the method :saveFile().
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