replace a block reference with another block

[arun]

Hi,
How do I replace a block reference with another block reference in qcad script.
I am using qcad 3.28.1 on linux.
Thanks,
Arun

[CVH]

How do I replace a block reference with another block reference in qcad script.

Query the block reference entity by id:
var doc = this.getDocument();
var blockref = doc.queryEntity(entityId);

Query the block definition by the intended block name:
var block = doc.queryBlockDirect("MyNewBlock");
(Query Direct, no modification required)

Set the referenced block id of your block:
blockref.setReferencedBlockId(block.getId());

Cast the modified block reference back to the drawing:
var di = this.getDocumentInterface();
var op = new RAddObjectOperation(blockref, false, true);
(NOTuseCurrentAttributes, undoAble)
di.applyOperation(op);

Another option is to use an RModifyObjectOperation() instead:
var op = new RModifyObjectOperation(blockref);

It is best that you verify that a block reference entity and a block is returned instead of nothing.
And it might be required to clone the reference first.

Regards,
CVH

[arun]

Thanks CVH . Will check this out.