This function causes dBarcode to create the barcode image specified by the current setting of the OLE variables and pass the metafile image to the Windows clipboard
If an error is encountered while generating the image the variable m_ierror is set to a value greater than zero.
The OLE variable m_spattern is filled by this function.
The size of the metafile picture created on the clipboard will be that specified by the m_ilength and m_iheight variables, although these will themselves be set by dBarcode if the variable m_inominalsize if set to 1 and the barcode type has a nominal size
The function returns 0 if an error is encountered, otherwise it returns a non-zero value.
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