## GtkPrinter

GtkPrinter — Represents a printer

## Synopsis

    #include <gtk/gtk.h>

                        GtkPrinter;
                        GtkPrintBackend;
    GtkPrinter *        gtk_printer_new                     (const gchar *name,
                                                             GtkPrintBackend *backend,
                                                             gboolean virtual_);
    GtkPrintBackend *   gtk_printer_get_backend             (GtkPrinter *printer);
    const gchar *       gtk_printer_get_name                (GtkPrinter *printer);
    const gchar *       gtk_printer_get_state_message       (GtkPrinter *printer);
    const gchar *       gtk_printer_get_description         (GtkPrinter *printer);
    const gchar *       gtk_printer_get_location            (GtkPrinter *printer);
    const gchar *       gtk_printer_get_icon_name           (GtkPrinter *printer);
    gint                gtk_printer_get_job_count           (GtkPrinter *printer);
    gboolean            gtk_printer_is_active               (GtkPrinter *printer);
    gboolean            gtk_printer_is_paused               (GtkPrinter *printer);
    gboolean            gtk_printer_is_accepting_jobs       (GtkPrinter *printer);
    gboolean            gtk_printer_is_virtual              (GtkPrinter *printer);
    gboolean            gtk_printer_is_default              (GtkPrinter *printer);
    gboolean            gtk_printer_accepts_ps              (GtkPrinter *printer);
    gboolean            gtk_printer_accepts_pdf             (GtkPrinter *printer);
    GList *             gtk_printer_list_papers             (GtkPrinter *printer);
    gint                gtk_printer_compare                 (GtkPrinter *a,
                                                             GtkPrinter *b);
    gboolean            gtk_printer_has_details             (GtkPrinter *printer);
    void                gtk_printer_request_details         (GtkPrinter *printer);
    GtkPrintCapabilities  gtk_printer_get_capabilities      (GtkPrinter *printer);
    GtkPageSetup *      gtk_printer_get_default_page_size   (GtkPrinter *printer);
    gboolean            gtk_printer_get_hard_margins        (GtkPrinter *printer,
                                                             gdouble *top,
                                                             gdouble *bottom,
                                                             gdouble *left,
                                                             gdouble *right);
    gboolean            (*GtkPrinterFunc)                   (GtkPrinter *printer,
                                                             gpointer data);
    void                gtk_enumerate_printers              (GtkPrinterFunc func,
                                                             gpointer data,
                                                             GDestroyNotify destroy,
                                                             gboolean wait);

## Object Hierarchy

      GObject
       +----GtkPrinter

      GObject
       +----GtkPrintBackend

## Properties

      "accepting-jobs"           gboolean              : Read
      "accepts-pdf"              gboolean              : Read / Write / Construct Only
      "accepts-ps"               gboolean              : Read / Write / Construct Only
      "backend"                  GtkPrintBackend*      : Read / Write / Construct Only
      "icon-name"                gchar*                : Read
      "is-virtual"               gboolean              : Read / Write / Construct Only
      "job-count"                gint                  : Read
      "location"                 gchar*                : Read
      "name"                     gchar*                : Read / Write / Construct Only
      "paused"                   gboolean              : Read
      "state-message"            gchar*                : Read

## Signals

      "details-acquired"                               : Run Last

## Description

A GtkPrinter object represents a printer. You only need to deal directly with printers if you use the non-portable GtkPrintUnixDialog API.

A GtkPrinter allows to get status information about the printer, such as its description, its location, the number of queued jobs, etc. Most importantly, a GtkPrinter object can be used to create a GtkPrintJob object, which lets you print to the printer.

Printing support was added in GTK+ 2.10.

## Details

### GtkPrinter

    typedef struct _GtkPrinter GtkPrinter;

### GtkPrintBackend

    typedef struct _GtkPrintBackend GtkPrintBackend;

### gtk_printer_new ()

    GtkPrinter *        gtk_printer_new                     (const gchar *name,
                                                             GtkPrintBackend *backend,
                                                             gboolean virtual_);

Creates a new GtkPrinter.

`name` : | the name of the printer
`backend` : | a GtkPrintBackend
`virtual_` : | whether the printer is virtual
Returns : | a new GtkPrinter

Since 2.10

### gtk_printer_get_backend ()

    GtkPrintBackend *   gtk_printer_get_backend             (GtkPrinter *printer);

Returns the backend of the printer.

`printer` : | a GtkPrinter
Returns : | the backend of `printer`

Since 2.10

### gtk_printer_get_name ()

    const gchar *       gtk_printer_get_name                (GtkPrinter *printer);

Returns the name of the printer.

`printer` : | a GtkPrinter
Returns : | the name of `printer`

Since 2.10

### gtk_printer_get_state_message ()

    const gchar *       gtk_printer_get_state_message       (GtkPrinter *printer);

Returns the state message describing the current state of the printer.

`printer` : | a GtkPrinter
Returns : | the state message of `printer`

Since 2.10

### gtk_printer_get_description ()

    const gchar *       gtk_printer_get_description         (GtkPrinter *printer);

Gets the description of the printer.

`printer` : | a GtkPrinter
Returns : | the description of `printer`

Since 2.10

### gtk_printer_get_location ()

    const gchar *       gtk_printer_get_location            (GtkPrinter *printer);

Returns a description of the location of the printer.

`printer` : | a GtkPrinter
Returns : | the location of `printer`

Since 2.10

### gtk_printer_get_icon_name ()

    const gchar *       gtk_printer_get_icon_name           (GtkPrinter *printer);

Gets the name of the icon to use for the printer.

`printer` : | a GtkPrinter
Returns : | the icon name for `printer`

Since 2.10

### gtk_printer_get_job_count ()

    gint                gtk_printer_get_job_count           (GtkPrinter *printer);

Gets the number of jobs currently queued on the printer.

`printer` : | a GtkPrinter
Returns : | the number of jobs on `printer`

Since 2.10

### gtk_printer_is_active ()

    gboolean            gtk_printer_is_active               (GtkPrinter *printer);

Returns whether the printer is currently active (i.e. accepts new jobs).

`printer` : | a GtkPrinter
Returns : | `TRUE` if `printer` is active

Since 2.10

### gtk_printer_is_paused ()

    gboolean            gtk_printer_is_paused               (GtkPrinter *printer);

Returns whether the printer is currently paused. A paused printer still accepts jobs, but it is not printing them.

`printer` : | a GtkPrinter
Returns : | `TRUE` if `printer` is paused

Since 2.14

### gtk_printer_is_accepting_jobs ()

    gboolean            gtk_printer_is_accepting_jobs       (GtkPrinter *printer);

Returns whether the printer is accepting jobs

`printer` : | a GtkPrinter
Returns : | `TRUE` if `printer` is accepting jobs

Since 2.14

### gtk_printer_is_virtual ()

    gboolean            gtk_printer_is_virtual              (GtkPrinter *printer);

Returns whether the printer is virtual (i.e. does not represent actual printer hardware, but something like a CUPS class).

`printer` : | a GtkPrinter
Returns : | `TRUE` if `printer` is virtual

Since 2.10

### gtk_printer_is_default ()

    gboolean            gtk_printer_is_default              (GtkPrinter *printer);

Returns whether the printer is the default printer.

`printer` : | a GtkPrinter
Returns : | `TRUE` if `printer` is the default

Since 2.10

### gtk_printer_accepts_ps ()

    gboolean            gtk_printer_accepts_ps              (GtkPrinter *printer);

Returns whether the printer accepts input in PostScript format.

`printer` : | a GtkPrinter
Returns : | `TRUE` if `printer` accepts PostScript

Since 2.10

### gtk_printer_accepts_pdf ()

    gboolean            gtk_printer_accepts_pdf             (GtkPrinter *printer);

Returns whether the printer accepts input in PDF format.

`printer` : | a GtkPrinter
Returns : | `TRUE` if `printer` accepts PDF

Since 2.10

### gtk_printer_list_papers ()

    GList *             gtk_printer_list_papers             (GtkPrinter *printer);

Lists all the paper sizes `printer` supports. This will return and empty list unless the printer's details are available, see `gtk_printer_has_details()` and `gtk_printer_request_details()`.

`printer` : | a GtkPrinter
Returns : | a newly allocated list of newly allocated GtkPageSetup s. [element-type GtkPageSetup][transfer full GtkPageSetup]

Since 2.12

### gtk_printer_compare ()

    gint                gtk_printer_compare                 (GtkPrinter *a,
                                                             GtkPrinter *b);

Compares two printers.

`a` : | a GtkPrinter
`b` : | another GtkPrinter
Returns : | 0 if the printer match, a negative value if `a` < `b`, or a positive value if `a` > `b`

Since 2.10

### gtk_printer_has_details ()

    gboolean            gtk_printer_has_details             (GtkPrinter *printer);

Returns whether the printer details are available.

`printer` : | a GtkPrinter
Returns : | `TRUE` if `printer` details are available

Since 2.12

### gtk_printer_request_details ()

    void                gtk_printer_request_details         (GtkPrinter *printer);

Requests the printer details. When the details are available, the "details-acquired" signal will be emitted on `printer`.

`printer` : | a GtkPrinter

Since 2.12

### gtk_printer_get_capabilities ()

    GtkPrintCapabilities  gtk_printer_get_capabilities      (GtkPrinter *printer);

Returns the printer's capabilities.

This is useful when you're using GtkPrintUnixDialog's manual-capabilities setting and need to know which settings the printer can handle and which you must handle yourself.

This will return 0 unless the printer's details are available, see `gtk_printer_has_details()` and `gtk_printer_request_details()`.

`printer` : | a GtkPrinter
Returns : | the printer's capabilities

Since 2.12

### gtk_printer_get_default_page_size ()

    GtkPageSetup *      gtk_printer_get_default_page_size   (GtkPrinter *printer);

Returns default page size of `printer`.

`printer` : | a GtkPrinter
Returns : | a newly allocated GtkPageSetup with default page size of the printer.

Since 2.14

### gtk_printer_get_hard_margins ()

    gboolean            gtk_printer_get_hard_margins        (GtkPrinter *printer,
                                                             gdouble *top,
                                                             gdouble *bottom,
                                                             gdouble *left,
                                                             gdouble *right);

Retrieve the hard margins of `printer`, i.e. the margins that define the area at the borders of the paper that the printer cannot print to.

Note: This will not succeed unless the printer's details are available, see `gtk_printer_has_details()` and `gtk_printer_request_details()`.

`printer` : | a GtkPrinter
`top` : | a location to store the top margin in
`bottom` : | a location to store the bottom margin in
`left` : | a location to store the left margin in
`right` : | a location to store the right margin in
Returns : | `TRUE` iff the hard margins were retrieved

Since 2.20

### GtkPrinterFunc ()

    gboolean            (*GtkPrinterFunc)                   (GtkPrinter *printer,
                                                             gpointer data);

The type of function passed to `gtk_enumerate_printers()`. Note that you need to ref `printer`, if you want to keep a reference to it after the function has returned.

`printer` : | a GtkPrinter
`data` : | user data passed to `gtk_enumerate_printers()`
Returns : | `TRUE` to stop the enumeration, `FALSE` to continue

### gtk_enumerate_printers ()

    void                gtk_enumerate_printers              (GtkPrinterFunc func,
                                                             gpointer data,
                                                             GDestroyNotify destroy,
                                                             gboolean wait);

Calls a function for all GtkPrinters. If `func` returns `TRUE`, the enumeration is stopped.

`func` : | a function to call for each printer
`data` : | user data to pass to `func`
`destroy` : | function to call if `data` is no longer needed
`wait` : | if `TRUE`, wait in a recursive mainloop until all printers are enumerated; otherwise return early

Since 2.10

## Property Details

### The `"accepting-jobs"` property

      "accepting-jobs"           gboolean              : Read

This property is `TRUE` if the printer is accepting jobs.

Default value: TRUE

Since 2.14

### The `"accepts-pdf"` property

      "accepts-pdf"              gboolean              : Read / Write / Construct Only

TRUE if this printer can accept PDF.

Default value: TRUE

### The `"accepts-ps"` property

      "accepts-ps"               gboolean              : Read / Write / Construct Only

TRUE if this printer can accept PostScript.

Default value: TRUE

### The `"backend"` property

      "backend"                  GtkPrintBackend*      : Read / Write / Construct Only

Backend for the printer.

### The `"icon-name"` property

      "icon-name"                gchar*                : Read

The icon name to use for the printer.

Default value: ""

### The `"is-virtual"` property

      "is-virtual"               gboolean              : Read / Write / Construct Only

FALSE if this represents a real hardware printer.

Default value: FALSE

### The `"job-count"` property

      "job-count"                gint                  : Read

Number of jobs queued in the printer.

Allowed values: >= 0

Default value: 0

### The `"location"` property

      "location"                 gchar*                : Read

The location of the printer.

Default value: ""

### The `"name"` property

      "name"                     gchar*                : Read / Write / Construct Only

Name of the printer.

Default value: ""

### The `"paused"` property

      "paused"                   gboolean              : Read

This property is `TRUE` if this printer is paused. A paused printer still accepts jobs, but it does not print them.

Default value: FALSE

Since 2.14

### The `"state-message"` property

      "state-message"            gchar*                : Read

String giving the current state of the printer.

Default value: ""

## Signal Details

### The `"details-acquired"` signal

    void                user_function                      (GtkPrinter *printer,
                                                            gboolean    success,
                                                            gpointer    user_data)      : Run Last

Gets emitted in response to a request for detailed information about a printer from the print backend. The `success` parameter indicates if the information was actually obtained.

`printer` : | the GtkPrinter on which the signal is emitted
`success` : | `TRUE` if the details were successfully acquired
`user_data` : | user data set when the signal handler was connected.

Since 2.10