Define custom action for double click on a block of a particular name

[lpr8PZGA]

Hello,

suppose having a block named MyBlock.

Is there a way to define a special action (command) to be performed on double-click on the block named MyBlock?

- ObjectARX (C, C++).

TIA.

Lukas

[daniel_cadext]

It’s a bit of a hassle because you have to remove the ATTBLOCKREF double click action from the CUI  

class BlockRefDoubleClickEdit : public AcDbDoubleClickEdit
{
public:
    BlockRefDoubleClickEdit(void) = default;;
    virtual ~BlockRefDoubleClickEdit(void) override = default;

    void finishEdit(void) override
    {
        acutPrintf(_T("\nYou did it"));
    }

    void startEdit(AcDbEntity* pEnt, AcGePoint3d pt) override
    {
        AcApDocument* pDoc = acDocManager->curDocument();
        acDocManager->lockDocument(pDoc, AcAp::kWrite);
        if (pEnt->isA() == AcDbBlockReference::desc())
            acutPrintf(_T("\nYAY"));
        acDocManager->unlockDocument(pDoc);
    }
};

then

class ArxTemplate : public AcRxArxApp
{
    BlockRefDoubleClickEdit m_pEdit;
public:
    ArxTemplate() : AcRxArxApp()
    {
    }

    virtual AcRx::AppRetCode On_kInitAppMsg(void* pkt)
    {
        AcRx::AppRetCode retCode = AcRxArxApp::On_kInitAppMsg(pkt);
        AcDbBlockReference::desc()->addX(AcDbDoubleClickEdit::desc(), &m_pEdit);
        return (retCode);
    }

    virtual AcRx::AppRetCode On_kUnloadAppMsg(void* pkt)
    {
        AcRx::AppRetCode retCode = AcRxArxApp::On_kUnloadAppMsg(pkt);
        AcDbBlockReference::desc()->delX(AcDbDoubleClickEdit::desc());
        return (retCode);
    }
     ....
};

[lpr8PZGA]

Hello,

I understand the code, but where is a kind of checking for the block name - here "MyBlock"?

And how do I perform a "default" action for non-"MyBlock" blocks?

Best regards,

Lukas

[daniel_cadext]

You can check the name from getting the block record, if the names don’t match, you would have to forward the call to eattedit via send string to execute or something, that is, if the block has attributes. It’s a pretty messy kludge,

 void startEdit(AcDbEntity* pEnt, AcGePoint3d pt) override
 {
     AcApDocument* pDoc = acDocManager->curDocument();
     acDocManager->lockDocument(pDoc, AcAp::kWrite);
     if (pEnt->isA() == AcDbBlockReference::desc())
     {
         static AcString src=_T("GRA");
         AcDbBlockReference* pRef = static_cast<AcDbBlockReference*>(pEnt);
         AcDbBlockTableRecordPointer pBlock(pRef->blockTableRecord());
         AcString name;
         if (auto es = pBlock->getName(name); es == eOk && name.compareNoCase(src) == 0)
         {
             acutPrintf(_T("\nYAY"));
             return;
         }
     }
     acDocManager->sendStringToExecute(pDoc, _T("_.EATTEDIT "));
     acDocManager->unlockDocument(pDoc);
 }

maybe there’s a better way. Too bad there’s no AcDbDoubleClickOverrule

[anuj_abhiwan]

To add a double-click action on a block by name:

js
Copy
Edit
document.querySelector('[name="blockName"]').ondblclick = () => {
  // custom action here
};