Print Preview: Hook up the print button to initiate printing without displaying a print dialog.

printing/printing_context_win.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "printing/printing_context_win.h"
 
 #include <winspool.h>
 
 #include "base/i18n/file_util_icu.h"
 #include "base/i18n/time_formatting.h"
 #include "base/message_loop.h"
 #include "base/time.h"
 #include "base/utf_string_conversions.h"
+#include "base/values.h"
 #include "printing/print_settings_initializer_win.h"
 #include "printing/printed_document.h"
 #include "skia/ext/platform_device_win.h"
 
 using base::Time;
 
 namespace printing {
 
 class PrintingContextWin::CallbackHandler : public IPrintDialogCallback,
                                             public IObjectWithSite {
@@ skipping 177 matching lines @@
 
   PRINTDLG dialog_options = { sizeof(PRINTDLG) };
   dialog_options.Flags = PD_RETURNDC | PD_RETURNDEFAULT;
   if (PrintDlg(&dialog_options) == 0) {
     ResetSettings();
     return FAILED;
   }
   return ParseDialogResult(dialog_options);
 }
 
+PrintingContext::Result PrintingContextWin::UpdatePrintSettings(
+    const DictionaryValue* job_settings, const PageRanges& ranges) {
+  DCHECK(!in_print_job_);
+
+  settings_.ranges = ranges;
+
+  NOTIMPLEMENTED();
+
+  return FAILED;
+}
+
 PrintingContext::Result PrintingContextWin::InitWithSettings(
     const PrintSettings& settings) {
   DCHECK(!in_print_job_);
 
   settings_ = settings;
 
   // TODO(maruel): settings_.ToDEVMODE()
   HANDLE printer;
   if (!OpenPrinter(const_cast<wchar_t*>(settings_.device_name().c_str()),
                    &printer,
@@ skipping 379 matching lines @@
   if (buf_size) {
     buffer->reset(new uint8[buf_size]);
     memset(buffer->get(), 0, buf_size);
     if (!GetPrinter(printer, level, buffer->get(), buf_size, &buf_size)) {
       buffer->reset();
     }
   }
 }
 
 }  // namespace printing