{ Select menu Project -> Import Type Library
  Find "PDFCreatorPilot Type Library (Version 1.0)".
  Import this type library.
  Add PDFCreatorPilotLib_TLB in the "uses" section.
  Add line:
    PDF: TPDFDocument3;
  in the "var" section.
}

PDF := TPDFDocument3.Create(nil);
PDF.StartEngine('demo@demo', 'demo');
{ now PDF object is ready to use }
{ something else goes here... }
PDF.Destroy;

/*
 PDFCreatorPilot must be installed in the system.
 (regsvr32 PDFCreatorPilot.dll)
*/

IPDFDocument3* PDF = NULL;
CLSID clsid;

HRESULT hr = CLSIDFromProgID(OLESTR("PDFCreatorPilot.PDFDocument3"), &clsid);
if(hr != S_OK)
{
    // can't load. no such COM installed.
    return;
}

hr = CoCreateInstance(clsid, 0, CLSCTX_ALL, __uuidof(IPDFDocument3), (LPVOID *)&PDF);
if(hr != S_OK)
{
    // can't load. no such COM installed.
    return;
}

PDF->StartEngine("demo@demo", "demo");
// now PDF object is ready to use
// something else goes here...
PDF->Release();
PDF = NULL;

/*
 PDFCreatorPilot must be added to project as reference
 (in the COM tab page).
*/

PDFCreatorPilotLib.PDFDocument3Class pdf = new PDFCreatorPilotLib.PDFDocument3Class();
pdf.StartEngine("demo@demo", "demo");
// now PDF object is ready to use
// something else goes here...
pdf = null;

' PDFCreatorPilot must be installed in the system.
' (regsvr32 PDFCreatorPilot.dll)

Set PDF = CreateObject("PDFCreatorPilot.PDFDocument3")
PDF.StartEngine "demo@demo", "demo"
' now PDF object is ready to use
' something else goes here...
Set PDF = nothing