Declaration
property Params: TIOParams;
Description
If
ParamsEnabled is true, then
Params provides access to the
TIOParams object for the image.
The parameters are updated when loading from files or streams. You can modify these parameters before saving the image.
If
ParamsEnabled is false, result will be nil.
Note:
ParamsEnabled should
only be used when TIEBitmap is being used as a stand-alone object. When it is attached to a TImageEnView or TImageEnMIO, use
TImageEnIO.Params instead.
Examples
// Reduce the size of a JPEG image
aBmp := TIEBitmap.create;
aBmp.ParamsEnabled := True; // Load params with the image
aBmp.Read( 'C:\MyImage.jpeg' );
aBmp.Params.JPEG_Quality := 70;
aBmp.Write( 'C:\OutImage.jpeg' );
aBmp.Free;
// Which is the same as:
aBmp := TIEBitmap.create;
aIOParams := TIOParams.create;
aBmp.Read( 'C:\MyImage.jpeg', aIOParams );
aIOParams.JPEG_Quality := 70;
aBmp.Write( 'C:\OutImage.jpeg', aIOParams );
aIOParams.free;
aBmp.Free;
// Load the third image in a TIFF and save it to JPEG
aBmp := TIEBitmap.create;
aBmp.ParamsEnabled := True; // Load params with the image
aBmp.Params.ImageIndex := 2;
aBmp.Read( 'C:\MyTiffDoc.TIFF' );
aBmp.Params.JPEG_Quality := 70;
aBmp.Write( 'D:\Page3.jpeg' );
aBmp.Free;