topic Re: How do I read Custom Properties/Attributes from an anonymous object? in ObjectARX Forum

How do I read Custom Properties/Attributes from an anonymous object?

jlobo2 — Thu, 25 Jul 2019 21:58:21 GMT

How do I read Custom Properties/Attributes from an anonymous object?

I can read the attributes of the object, but not sure how to read the below:

Any help will be greatly appreciated.

Re: How do I read Custom Properties/Attributes from an anonymous object?

Alexander.Rivilis — Fri, 26 Jul 2019 08:29:56 GMT

C# or C++? If C# - you (as usually) created topic in wrong forum. Right forum is: https://forums.autodesk.com/t5/net/bd-p/152

Also no difference between getting custom properties from anonymous and named block references.

Re: How do I read Custom Properties/Attributes from an anonymous object?

jlobo2 — Fri, 26 Jul 2019 12:01:03 GMT

Yes @Alexander.Rivilis , I did post it on the .NET forum as well.

https://forums.autodesk.com/t5/net/how-do-i-read-custom-properties-attributes-from-an-anonymous/td-p/8931534

My bad, I thought this forum was for C++.

How to access the custom properties for the block references or anonymous blocks in C++ though?

Thank You for your help once again.

Re: How do I read Custom Properties/Attributes from an anonymous object?

Alexander.Rivilis — Fri, 26 Jul 2019 12:08:45 GMT

@jlobo2 wrote:

How to access the custom properties for the block references or anonymous blocks in C++ though?

https://adndevblog.typepad.com/autocad/2012/08/how-to-access-and-modify-a-dynamicblockreference-property-in-arx-and-net.html

Re: How do I read Custom Properties/Attributes from an anonymous object?

jlobo2 — Fri, 26 Jul 2019 13:17:55 GMT

@Alexander.Rivilis , How do I set the property value for the block?

I am using the following code, but it does not update the value.

if (wcscmp(blkProp.propertyName().kACharPtr(), L"Visibility1") == 0)
{
	AfxMessageBox(_T("Visibility1 Found"));
	blkProp.setValue(_T("TEST"));
}

Also, how do I access or print this following value in TCHAR?

//Get allowed values for property
AcDbEvalVariantArray evalAry;
if ((err = blkProp.getAllowedValues(evalAry)) == Acad::eOk)
{
	if (evalAry.length() >= 1)
	{
		AcDbEvalVariant eval = evalAry[1];
                // How do I access this value as a TCHAR or string 
                // to print in the command line?
					
		if (!blkProp.readOnly())
		{
			if ((err = blkProp.setValue(eval)) != Acad::eOk)
			{
				acutPrintf(L"\nError setting property value...");
			}
		}
	}
}

Re: How do I read Custom Properties/Attributes from an anonymous object?

Alexander.Rivilis — Fri, 26 Jul 2019 13:20:47 GMT

Not

AcDbEvalVariant eval = evalAry[1];

but

AcDbEvalVariant eval = evalAry[0];

Re: How do I read Custom Properties/Attributes from an anonymous object?

jlobo2 — Fri, 26 Jul 2019 13:45:36 GMT

Ok. I am getting a hang of it now. Basically we are accessing from a set of pre-defined objects and modifying the custom properties to dynamically change it.

@Alexander.Rivilis am I on the right track?

Also, how do I access the text value of the property?

if (wcscmp(blkProp.propertyName().kACharPtr(), L"Visibility1") == 0)
{
	AfxMessageBox(_T("Visibility1 Found"));
        
        // How to display the value as text?
	AfxMessageBox( blkProp.value() );
	blkProp.setValue(_T("B1"));
}

Re: How do I read Custom Properties/Attributes from an anonymous object?

jlobo2 — Fri, 26 Jul 2019 14:53:06 GMT

@Alexander.Rivilis Nevermind - I got it working through the code in C#.NET

Thanks a lot once again for your help. I really appreciate it.

Re: How do I read Custom Properties/Attributes from an anonymous object?

Alexander.Rivilis — Fri, 26 Jul 2019 15:57:23 GMT

As far as AcDbEvalVariant is derived from struct resbuf, you can use function dxfToStr or printResbufChain (which defined in ObjectARX SDK samples\database\ARXDBG\AcadUtils\ArxDbgRbList.cpp) to convert AcDbEvalVariant to CString