Content Streams and Optional Content Groups, Page layout
Syntax
Delphi
function TPDFlib.SetCapturedPageTransparencyGroup(CaptureID, CS, Isolate, Knockout: Integer): Integer;
ActiveX
Function PDFlib::SetCapturedPageTransparencyGroup(CaptureID As Long, CS As Long, Isolate As Long, Knockout As Long) As Long
DLL
int DLSetCapturedPageTransparencyGroup(int InstanceID, int CaptureID, int CS, int Isolate, int Knockout);
Parameters
CaptureID
The ID returned by the CapturePage function when a page was previously captured
CS
The color space to use: 1 = RGB 2 = CMYK
Isolate
This parameter has no effect and is reserved for future use. It should always be set to 0.
Knockout
Indicates whether items added to the page are drawn over each other or "knocked out" of the page. In knockout mode a "hole" is made through existing objects on the page in the shape of the new object. The new object is then drawn against the background. 0 = Do not knockout 1 = Knockout