[V8i] Add and Delete Design Links within a CellElement

Lukas Sikora said:

I could not find any API or examples [about Design Links]

The MicroStation V8i API won't help you.  But, with MicroStation CONNECT you can find the DgnLinkManager class in the C++ MicroStationAPI: The Drawing Set interface allows programs to manipulate drawing sets and drawing links stored in dgn idx files.

I can't see anything similar in the DgnPlatformNet API.

Thanks Jon!
I was hoping that there is something that I couldn't find. In the CONNECT there are more possibilities but unfortunately I need that for the V8i.

Regards,

Lukas

Just as Jon mentioned, there is no public APIs for the design link in V8i. Below example is for CE.

void addDgnFileLink(WCharCP unparsed)
{
	ElementHandle eh(2733L, ACTIVEMODEL);  //Here MUST use ElementHandle
	if (!eh.IsValid())
	{
		mdlDialog_dmsgsPrint(L"ElementHandle is invalid.");
		return;
	}
	DgnLinkTreeSpecPtr spec = DgnLinkManager::CreateTreeSpec(eh);
	DgnLinkTreePtr linkTree = DgnLinkManager::ReadLinkTree(*spec, true);
	DgnLinkTreeBranchR root = linkTree->GetRootR();

	StatusInt status;
	auto leaf = DgnLinkManager::CreateLink(status, DGNLINK_TYPEKEY_File);
	DgnDocumentMonikerPtr moniker = DgnDocumentMoniker::CreateFromFileName(L"C:\\temp\\test.dgn");
	DgnLinkP link = leaf->GetLinkP();
	DgnFileLinkP fileLink = dynamic_cast<DgnFileLinkP>(link);
	fileLink->SetMoniker(moniker.get(), true);

	WString name = link->BuildSuggestedName(&root, true);
	WString uniqueName = root.GetUniqueChildName(name.GetWCharCP());
	leaf->SetName(uniqueName.GetWCharCP());
	
	root.AddChild(*leaf, 0);
	DgnLinkManager::WriteLinkTree(*linkTree);
}

Just as Jon mentioned, there is no public APIs for the design link in V8i. Below example is for CE.

void addDgnFileLink(WCharCP unparsed)
{
	ElementHandle eh(2733L, ACTIVEMODEL);  //Here MUST use ElementHandle
	if (!eh.IsValid())
	{
		mdlDialog_dmsgsPrint(L"ElementHandle is invalid.");
		return;
	}
	DgnLinkTreeSpecPtr spec = DgnLinkManager::CreateTreeSpec(eh);
	DgnLinkTreePtr linkTree = DgnLinkManager::ReadLinkTree(*spec, true);
	DgnLinkTreeBranchR root = linkTree->GetRootR();

	StatusInt status;
	auto leaf = DgnLinkManager::CreateLink(status, DGNLINK_TYPEKEY_File);
	DgnDocumentMonikerPtr moniker = DgnDocumentMoniker::CreateFromFileName(L"C:\\temp\\test.dgn");
	DgnLinkP link = leaf->GetLinkP();
	DgnFileLinkP fileLink = dynamic_cast<DgnFileLinkP>(link);
	fileLink->SetMoniker(moniker.get(), true);

	WString name = link->BuildSuggestedName(&root, true);
	WString uniqueName = root.GetUniqueChildName(name.GetWCharCP());
	leaf->SetName(uniqueName.GetWCharCP());
	
	root.AddChild(*leaf, 0);
	DgnLinkManager::WriteLinkTree(*linkTree);
}