;;; Code:
+;;; Initialization
+
+; Specifier tag 'printer which matches printers
+(define-specifier-tag 'printer (function device-printer-p))
+
+; Specifier tag 'display which matches displays
+(define-specifier-tag 'display (function
+ (lambda (device)
+ (not (device-printer-p device)))))
+
+;;; Functions
+
(defun device-list ()
"Return a list of all devices."
(apply 'nconc (mapcar 'console-device-list (console-list))))
This is equivalent to the type of the device's console.
Value is `tty' for a tty device (a character-only terminal),
`x' for a device that is a screen on an X display,
+`gtk' for a device that is a GTK connection.
`ns' for a device that is a NeXTstep connection (not yet implemented),
-`mswindows' for a device that is a Windows or Windows NT connection,
-`pc' for a device that is a direct-write MS-DOS screen (not yet implemented),
+`mswindows' for a device that is a MS Windows workstation,
+`msprinter' for a device that is a MS Windows printer connection,
`stream' for a stream device (which acts like a stdio stream), and
`dead' for a deleted device."
(or device (setq device (selected-device)))
"Return the number of color cells of DEVICE, or nil if unknown."
(device-system-metric device 'num-color-cells))
+(defun make-gtk-device ()
+ "Create a new GTK device."
+ (make-device 'gtk nil))
+
(defun make-x-device (&optional display)
"Create a new device connected to DISPLAY."
(make-device 'x display))
(defun call-device-method (name device &rest args)
"Call a DEVICE-specific function with the generic name NAME.
-If DEVICE is not provide the selected device is used."
+If DEVICE is not provided then the selected device is used."
(or device (setq device (selected-device)))
(or (symbolp name) (error "function name must be a symbol"))
(let ((devmeth (intern (concat (symbol-name