Allows the transparency group for the page to be set. Whenever image are used as masks for other images the page transparency group should be set to ensure consistent results across different versions of PDF viewers.
function TDebenuPDFLibrary1511.SetPageTransparencyGroup(CS, Isolate,
Knockout: Integer): Integer;
Function DebenuPDFLibrary1511.PDFLibrary::SetPageTransparencyGroup(CS As Long,
Isolate As Long, Knockout As Long) As Long
int DPLSetPageTransparencyGroup(int InstanceID, int CS, int Isolate, int Knockout)
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.|
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