gtkPrintOperationRun: gtkPrintOperationRun

Description

Runs the print operation, by first letting the user modify print settings in the print dialog, and then print the document.

Usage

gtkPrintOperationRun(object, action, parent = NULL, .errwarn = TRUE)

Arguments

object

a GtkPrintOperation

action

the action to start

parent

Transient parent of the dialog. [ allow-none ]

.errwarn

Whether to issue a warning on error or fail silently

Value

retval: [GtkPrintOperationResult] the result of the print operation. A return value of GTK_PRINT_OPERATION_RESULT_APPLY indicates that the printing was completed successfully. In this case, it is a good idea to obtain the used print settings with gtkPrintOperationGetPrintSettings and store them for reuse with the next print operation. A value of GTK_PRINT_OPERATION_RESULT_IN_PROGRESS means the operation is running asynchronously, and will emit the "done" signal when done.
error: Return location for errors, or NULL. [ allow-none ]

Details

Normally that this function does not return until the rendering of all pages is complete. You can connect to the "status-changed" signal on op to obtain some information about the progress of the print operation. Furthermore, it may use a recursive mainloop to show the print dialog. If you call gtkPrintOperationSetAllowAsync or set the "allow-async" property the operation will run asynchronously if this is supported on the platform. The "done" signal will be emitted with the result of the operation when the it is done (i.e. when the dialog is canceled, or when the print succeeds or fails).

if (!is.null(settings))
  op$setPrintSettings(settings)
  
if (!is.null(page_setup))
  op$setDefaultPageSetup(page_setup)
  
gSignalConnect(op, "begin-print", begin_print)
gSignalConnect(op, "draw-page", draw_page)
 
res <- op$run("print-dialog", parent)
 
if (res[[1]] == "error") {
  error_dialog = gtkMessageDialog(parent, "destroy-with-parent", "error",
    "close", "Error printing file: ", res$error$message)
  gSignalConnect(error_dialog, "response", gtkWidgetDestroy)
  error_dialog$show()
} else if (res[[1]] == "apply")
  settings = op$getPrintSettings()

Note that gtkPrintOperationRun can only be called once on a given GtkPrintOperation. Since 2.10