preview (
  GtkPrintOperation* self,
  GtkPrintOperationPreview* preview,
  GtkPrintContext* context,
  GtkWindow* parent,
  gpointer user_data

Description [src]

Gets emitted when a preview is requested from the native dialog.

The default handler for this signal uses an external viewer application to preview.

To implement a custom print preview, an application must return TRUE from its handler for this signal. In order to use the provided context for the preview implementation, it must be given a suitable cairo context with gtk_print_context_set_cairo_context().

The custom preview implementation can use gtk_print_operation_preview_is_selected() and gtk_print_operation_preview_render_page() to find pages which are selected for print and render them. The preview must be finished by calling gtk_print_operation_preview_end_preview() (typically in response to the user clicking a close button).

Default handler:

The default handler is called after the handlers added via g_signal_connect().


preview GtkPrintOperationPreview

The GtkPrintOperationPreview for the current operation.

 The data is owned by the caller of the function.
context GtkPrintContext

The GtkPrintContext that will be used.

 The data is owned by the caller of the function.
parent GtkWindow

The GtkWindow to use as window parent.

 The argument can be NULL.
 The data is owned by the caller of the function.

Return value

Returns: gboolean

TRUE if the listener wants to take over control of the preview.