TImageEnView.LayersImport

Declaration

function LayersImport(const FileName: String; Stream: TStream = nil; FileFormat: TIOFileType = ioUnknown; Append: Boolean = False): Integer;

Description

Imports layers from a file or stream in IEV, ALL or DXF format.

Parameter	Description
FileName	The full path to a file to import (or '' if importing from a stream)
Stream	A stream to import from (or nil if importing from file)
FileFormat	The type of file, if known. It should be one ioIEV, ioALL or ioDXF. You can also specify ioUnknown, whereby ImageEn will infer the format from the content (with DXF only the file extension is considered)
Append	When false the existing content is cleared before importing

Result is -1 in the case of an error, otherwise returns the number of layers added.

IEV and ALL are object formats of TImageEnVect.
Conversion is as follows:

Object Kind	Converted To	Notes
iekLINE	TIELineLayer	-
iekBOX	TIEShapeLayer	-
iekELLIPSE	TIEShapeLayer	-
iekARC	TIEPolylineLayer	-
iekBITMAP	TIEImageLayer	-
iekTEXT	TIETextLayer	-
iekRULER	Skipped	-
iekPOLYLINE	TIEPolylineLayer	-
iekANGLE	TIEAngleLayer	-
iekMEMO	TIETextLayer	Text formatting is lost
iekLINELABEL	TIELineLayer	Inward arrows are converted to outward arrows

DXF is an Autocad vector format. DXF file can only be imported from file and only lines and ellipses objects are supported.

Example

// Import from an IEV file (replacing the existing layers)
ImageEnView1.LayersImport( 'C:\Vect.iev' );

// Import from an IEV file (adding to the existing layers)
ImageEnView1.LayersImport( 'C:\Vect.iev', nil, ioIEV, True );

// Import from an IEV stream (replacing the existing layers)
ImageEnView1.LayersImport( '', myStream );

// Import from an IEV stream (adding to the existing layers)
ImageEnView1.LayersImport( '', myStream, ioIEV, True );

// Import from an Autocad file
ImageEnView1.LayersImport( 'C:\cad.dxf', nil, ioDXF );

TImageEnView.LayersImport