CS4 drawing frameless lines on a document

Some kinds of adornments are unexpectedly "model" in the sense that their class IDs is stored within a persistent list, thereby introducing a dependency from documents to that plugin. A very sneaky, IMO bug. I don't know whether it has been fixed since I last ran into it.

Dirk

I don't know how much I've looked through the SDK samples but I just never parsed "Drw" as "Draw".

Sometimes you just don't see what's right in front of you.

Thanks for the pointer to IDrwEvtHandler.

A quick search brought up the BasicDrwEvtHandler sample project.

With a little work I should get this going nicely for what I want.

In case people are curious, after implementing the draw event handler/service in the BasicDrwEvtHandler I made some changes to the draw event handler.

In the HandleEvent() method, I made two changes. The first was:

// What event occurred?  Look it up by event ID in our registration list.
bool isDrawEvent = false;  // added
int32 index = ::FindLocation(fSupportedEventIDs, eventID);
if (index >= 0)
{
    // Received one of the events for which BscDEH is registered.
    // Output the corresponding string to trace
    whatWeGot.Append(fSupportedEventIDs[index].Value());
    if (fSupportedEventIDs[index] == ClassID(kEndPageMessage)) // added
    {                                   // added

        isDrawEvent = true; // added

    }                                  // added

    ....

with the second being:

// If it's not PDF or print, it must be screen drawing
if (contextFound == kFalse)
{
    whatWeGot.Append(" Screen Drawing");
    contextFound = kTrue;

    //added vvvvvvv  
    if ((isDrawEvent) && (gdp != nil))
    {
        InterfacePtr<IGraphicsPort> gPort(gdp->GetGraphicsPort(), UseDefaultIID());
        if (gPort != nil)
        {
             IDocument* document = Utils<ILayoutUIUtils>()->GetFrontDocument();
             if (document != nil)
             {
                 IDataBase *database = GetUIDRef(document).GetDataBase();
                 InterfacePtr<ISpreadList> spreadList(document, UseDefaultIID());
                 if ((database != nil) && (spreadList != nil))
                 {
                     int32 spreadCount = spreadList->GetSpreadCount();
                     for (int spreadIndex = 0; spreadIndex < spreadCount; ++spreadIndex)
                     {
                         UIDRef spreadUIDRef(database, spreadList->GetNthSpreadUID(spreadIndex));
                         InterfacePtr<ISpread> spread(spreadUIDRef, UseDefaultIID());
                         for (int32 pageIndex = 0; pageIndex < spread->GetNumPages(); ++pageIndex)
                         {
                             InterfacePtr<IGeometry> pageGeo(spread->QueryNthPage(pageIndex));

                             if (pageGeo != nil)
                             {
                                 PMRect boundBox = pageGeo->GetStrokeBoundingBox();
                                 PMPoint origin = boundBox.LeftBottom();
                                 TransformInnerPointToPasteboard(pageGeo, &origin);

                                 gPort->gsave();
                                 gPort->setlinewidth(PMReal(3));
                                 gPort->setrgbcolor(PMReal(0.0), PMReal(1.0), PMReal(0.0));
                
                                 gPort->moveto(origin.X(), origin.Y() - boundBox.Height() / 2.0);
                                 gPort->lineto(origin.X() + boundBox.Width(), origin.Y() + boundBox.Height() / 2.0);
                                 gPort->stroke();

                                 gPort->moveto(origin.X() + boundBox.Width(), origin.Y() - boundBox.Height() / 2.0);
                                 gPort->lineto(origin.X(), origin.Y() + boundBox.Height() / 2.0);
                                 gPort->stroke();

                                 gPort->grestore();
                             }
                          }
                      }

                 }
             }

         }

    }

    // added ^^^^^^^^^
}

The above is a bit rough (Its function is to place a big green X on all the pages in a document.) but as a proof of concept it's something that I can make good use of.