Specifies whether to alert the user when the output to a device must be spooled through a system printer due to a conflict with the I/O port.
Supported platforms: Windows only
VBA:
object.PrinterSpoolAlert
Type: PreferencesOutput
The object this property applies to.
Read-only: No
Type: acPrinterSpoolAlert enum
The initial value for this property is acPrinterAlwaysAlert.
VBA:
Sub Example_PrinterSpoolAlert()
    ' This example reads and modifies the PrinterSpoolAlert
    ' preference value.
    ' When finished, this example resets the preference value back to
    ' its original value.
    
    Dim ACADPref As AcadPreferencesOutput
    Dim originalValue As Integer
    
    ' Get the user preferences object
    Set ACADPref = ThisDrawing.Application.Preferences.Output
    
    ' Read and display the original value
    originalValue = ACADPref.PrinterSpoolAlert
    MsgBox "The PrinterSpoolAlert preference is set to: " & originalValue
    ' Modify the PrinterSpoolAlert preference by toggling the value
    ACADPref.PrinterSpoolAlert = acPrinterNeverAlert
    MsgBox "The PrinterSpoolAlert preference has been set to: " & ACADPref.PrinterSpoolAlert
    ' Reset the preference back to its original value
    ACADPref.PrinterSpoolAlert = originalValue
    MsgBox "The PrinterSpoolAlert preference was reset back to: " & originalValue
End Sub
Visual LISP:
(vl-load-com)
(defun c:Example_PrinterSpoolAlert()
    ;; This example reads and modifies the PrinterSpoolAlert
    ;; preference value.
    ;; When finished, this example resets the preference value back to
    ;; its original value.
    (setq acadObj (vlax-get-acad-object))
    (setq preferences (vla-get-Preferences acadObj))
    
    ;; Read and display the original value
    (setq originalValue (vla-get-PrinterSpoolAlert (vla-get-Output preferences)))
    (alert (strcat "The PrinterSpoolAlert preference is set to: " (itoa originalValue)))
    ;; Modify the PrinterSpoolAlert preference by toggling the value
    (vla-put-PrinterSpoolAlert (vla-get-Output preferences) acPrinterNeverAlert)
    (alert (strcat "The PrinterSpoolAlert preference has been set to: " (itoa (vla-get-PrinterSpoolAlert (vla-get-Output preferences)))))
    ;; Reset the preference back to its original value
    (vla-put-PrinterSpoolAlert (vla-get-Output preferences) originalValue)
    (alert (strcat "The PrinterSpoolAlert preference was reset back to: " (itoa (vla-get-PrinterSpoolAlert (vla-get-Output preferences)))))
)