Class XbpMetaFile() Foundation
Class function of the XbpMetaFile class.
Objects of the XbpMetaFile() class are used to load, display and save metafiles. Metafiles contain graphic information created by the Xbase++ GRA engine. XbpMetaFile objects allow drawings to be saved in a file as a series of graphic primitives and later redisplayed by "playing back" the metafile. Metafiles are also suitable for exchanging graphic data between two work stations. Metafiles can contain bitmaps (raster images) or raster operations (see the function GraBitBlt()). If bitmaps are included, the graphic data is device dependent and exchanging graphic data between work stations with different screen resolutions and/or different numbers of display colors can lead to unexpected results.
Metafiles can be used to temporarily store data in the clipboard. They are also used to import drawings from one application into another.
An XbpMetaFile object can only load and display metafiles that were previously created and saved. The metafile contains graphic data that was recorded using an XbpFileDev object. The initial creation of a metafile always uses an XbpFileDev object that generates an XbpMetaFile object. XbpMetaFile objects can be generated in two different ways: either by a call to XbpMetaFile():new() or by the :metaFile() method of an XbpFileDev object.
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