I found this a little while ago and noticed that there is no header – so I don’t know who wrote it. Whoever it was – thank you!!

Update: I found the original postings of this code:

This little routine quickly detaches all XREFS from a drawing. XREFS are not limited to other drawing files. Pictures and PDFs are also considered XREFS. This routine will detach all of these as well.

Here’s how:

• DETACHALL <enter>
• That’s it. the routine will remove all XREFs

;;; BY VVA found at cadtutor.net
;;; Also posted by Azarko at https://forums.augi.com/showthread.php?131322-LISP-to-detach-all-XREF-PDF-IMAGE-ALL-UNDERLAYS/page2
(defun C:Detachall (/ *error*

mip:layer-status-restore mip:layer-status-save

delete-xref-img-underlay delete-all-dict

)

(vl-load-com)

(defun *error* (msg)

(mip:layer-status-restore)

(princ msg)

(princ)

) ;_ end of defun

(defun mip:layer-status-restore ()

(foreach item *PD_LAYER_LST*

(if (not (vlax-erased-p (car item)))

(vl-catch-all-apply

'(lambda ()

(vla-put-lock (car item) (cdr (assoc "lock" (cdr item))))

(vla-put-freeze

(car item)

(cdr (assoc "freeze" (cdr item)))

) ;_ end of vla-put-freeze

) ;_ end of lambda

) ;_ end of vl-catch-all-apply

) ;_ end of if

) ;_ end of foreach

(setq *PD_LAYER_LST* nil)

) ;_ end of defun

(defun mip:layer-status-save ()

(setq *PD_LAYER_LST* nil)

(vlax-for item (vla-get-layers

(vla-get-activedocument (vlax-get-acad-object))

) ;_ end of vla-get-layers

(setq *PD_LAYER_LST*

(cons (list item

(cons "freeze" (vla-get-freeze item))

(cons "lock" (vla-get-lock item))

) ;_ end of cons

*PD_LAYER_LST*

) ;_ end of cons

) ;_ end of setq

(vla-put-lock item :vlax-false)

(if (= (vla-get-freeze item) :vlax-true)

(vl-catch-all-apply

'(lambda () (vla-put-freeze item :vlax-false))

) ;_ end of vl-catch-all-apply

) ;_ end of if

) ;_ end of vlax-for

) ;_ end of defun

(defun delete-xref-img-underlay (/ count txt)

(mip:layer-status-save)

(vlax-for Blk (vla-get-Blocks

(vla-get-activedocument (vlax-get-acad-object))

) ;_ end of vla-get-Blocks

(if (and (= (vla-get-IsXref Blk) :vlax-false)

(not (wcmatch (vla-get-name Blk) "*|*"))

) ;_ end of and

(progn

(setq count 0

txt (strcat " Erase Xref and Underlay in "

(vla-get-name Blk)

) ;_ end of strcat

) ;_ end of setq

(grtext -1 txt)

(vlax-for Obj Blk

(setq count (1+ count))

(if (zerop (rem count 10))

(grtext -1 (strcat txt " : " (itoa count)))

) ;_ end of if

(if

(and (vlax-write-enabled-p Obj)

(or

(and ;_ XREF

(= (vla-get-ObjectName obj) "AcDbBlockReference")

(vlax-property-available-p Obj "Path")

) ;_ end of and

(and ;_ UNDERLAY

(wcmatch (vla-get-ObjectName obj) "*Reference")

(vlax-property-available-p Obj "UnderlayName")

) ;_ end of and

(= (vla-get-ObjectName obj) "AcDbRasterImage") ;_ IMAGE

) ;_ end of or

) ;_ end of and

(VL-CATCH-ALL-APPLY 'vla-Delete (list Obj))

) ;_ end of if

) ;_ end of vlax-for

) ;_ end of progn

) ;_ end of if

) ;_ end of vlax-for

(mip:layer-status-restore)

) ;_ end of defun

(defun delete-all-dict (dict)

;;; dict - dict name (like "ACAD_IMAGE_DICT", "ACAD_PDFDEFINITIONS" ... )

(vl-catch-all-apply

'(lambda ()

(vlax-map-Collection

(vla-item

(vla-get-dictionaries

(vla-get-activedocument (vlax-get-acad-object))

) ;_ end of vla-get-dictionaries

dict ;_ "ACAD_IMAGE_DICT"

) ;_ end of vla-Item

'vla-delete

) ;_ end of vlax-map-Collection

) ;_ end of lambda

) ;_ end of vl-catch-all-apply

) ;_ end of defun

(vl-load-com)

(delete-xref-img-underlay)

(command "_-xref" "_d" "*")

(while (> (getvar "CMDACTIVE") 0) (command))

(mapcar 'delete-all-dict

(list "ACAD_IMAGE_DICT"

"ACAD_PDFDEFINITIONS"

"ACAD_DWFDEFINITIONS"

"ACAD_DGNDEFINITIONS"

) ;_ end of list

) ;_ end of mapcar

(command "_.regenall")

(command "_.externalreferences")

(princ)

) ;_ end of defun
Open the External Reference Dialog/palette by entering XREF or XR at the command line.
This Picture shows the XREFs in the drawing. There is a JPEG (picture), PDF, & drawing file.

In the picture below:

To detach an xref manually – Select the XREF from the list > right click >  select “Detach”
Note: Selecting an xref from the list will highlight that XREF in the drawing area

In the Picture below:

This is how the XREF dialog/Palette looks after running the DETACHALL.lsp or by manually detaching the XREFs from the drawing.
~enjoy

		
	
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