有數種不同的方式可在 WebView2 中列印網頁,這可讓您輕鬆地實作和自訂各種層級。
方法 |
描述 |
ShowPrintUI |
開啟 WebView2 預覽列印 對話方塊或作業系統的 [ 列印 ] 對話方塊。 容易實作,最少支援自訂。 |
Print |
使用選擇性以程式設計方式指定的列印設定,以無訊息方式列印 WebView2 中目前的最上層檔至印表機。 您可以使用此選項來建置您自己的 [預覽列印] 對話方塊或列印體驗。 |
PrintToPdf |
以無訊息方式將 WebView2 中目前的最上層檔列印到 PDF 檔案。 您可以使用這個來建置自己的程式碼來列印 PDF 檔案。 |
PrintToPdfStream |
以無訊息方式將 WebView2 中目前的最上層檔列印到 PDF 資料流程。 您可以使用此選項來建置自己的程式碼來列印 PDF。 |
用來開啟 [列印] 對話方塊的 ShowPrintUI 方法
方法 ShowPrintUI
會開啟 WebView2 預覽列印 對話方塊或作業系統的 [列印 ] 對話方塊,用於 WebView2 控制項中的目前最上層檔。 藉由使用此方法,您可以輕鬆地為使用者提供熟悉的列印體驗。
範例:用來開啟 [列印] 對話方塊的 ShowPrintUI 方法
此範例會向使用者顯示 [ 列印 ] 對話方塊。
- 如果
printDialog
為 CoreWebView2PrintDialogKind.Browser
,則會開啟瀏覽器的 [預覽列印] 對話方塊。
- 如果
printDialog
為 CoreWebView2PrintDialogKind.System
,則會開啟 [系統列印] 對話方塊。
void ShowPrintUI(object target, ExecutedRoutedEventArgs e)
{
string printDialog = e.Parameter.ToString();
if (printDialog == "Browser")
{
// Opens the browser's Print Preview dialog.
webView.CoreWebView2.ShowPrintUI();
}
else
{
// Opens a system's Print dialog.
webView.CoreWebView2.ShowPrintUI(CoreWebView2PrintDialogKind.System);
}
}
void ShowPrintUI(CoreWebView2PrintDialogKind printDialogKind)
{
WebView2.CoreWebView2.ShowPrintUI(printDialogKind);
}
bool AppWindow::ShowPrintUI(COREWEBVIEW2_PRINT_DIALOG_KIND printDialogKind)
{
wil::com_ptr<ICoreWebView2_16> webView2_16;
CHECK_FAILURE(m_webView->QueryInterface(IID_PPV_ARGS(&webView2_16)));
CHECK_FAILURE(webView2_16->ShowPrintUI(printDialogKind));
return true;
}
用來自訂列印的 Print 方法
方法 Print
會使用選擇性、以程式設計方式指定的列印設定,以無訊息方式列印 WebView2 控制項中目前的最上層檔。 如果您想要建置自己的 [預覽列印] 對話方塊,或建置自己的列印體驗,您可以使用此方法。 此 API 包含非同步 Print
方法和 PrintSettings
物件。
範例 1:不含對話方塊的 Print 方法,使用預設列印設定
本範例會使用預設列印設定,將目前的網頁列印到預設印表機,而不需開啟 [ 列印 ] 對話方塊。
async void PrintToDefaultPrinter ()
{
string title = webView.CoreWebView2.DocumentTitle;
try
{
// Prints the current webpage, using the default printer and page settings.
// Passing null for PrintSettings causes the default print settings to be used.
CoreWebView2PrintStatus printStatus = await webView.CoreWebView2.PrintAsync(null);
if (printStatus == CoreWebView2PrintStatus.Succeeded)
{
MessageBox.Show(this, "Printing " + title + " document to printer succeeded", "Print to default printer");
}
else if (printStatus == CoreWebView2PrintStatus.PrinterUnavailable)
{
MessageBox.Show(this, "Printer is not available, offline or error state", "Print to default printer");
}
else
{
MessageBox.Show(this, "Printing " + title + " document to printer is failed", "Print to default printer");
}
}
catch (Exception)
{
MessageBox.Show(this, "Printing " + title + " document already in progress", "Print to default printer");
}
}
async void PrintToDefaultPrinter(object sender, RoutedEventArgs e)
{
string title = WebView2.CoreWebView2.DocumentTitle;
MessageDialog dialog = new MessageDialog("", "Print");
try
{
// Prints the current webpage by using the default printer and page settings.
// Passing null for PrintSettings causes the default print settings to be used.
CoreWebView2PrintStatus printStatus = await WebView2.CoreWebView2.PrintAsync(null);
if (printStatus == CoreWebView2PrintStatus.Succeeded)
{
dialog = new MessageDialog("Printing " + title +
" document to printer succeeded", "Print");
}
else if (printStatus == CoreWebView2PrintStatus.PrinterUnavailable)
{
dialog = new MessageDialog("Printer is not available, offline or error state", "Print");
}
else
{
dialog = new MessageDialog("Printing " + title +
" document to printer is failed", "Print");
}
}
catch (Exception)
{
dialog = new MessageDialog("Printing " + title +
" document already in progress", "Print");
}
await dialog.ShowAsync();
}
bool AppWindow::PrintToDefaultPrinter()
{
wil::com_ptr<ICoreWebView2_16> webView2_16;
CHECK_FAILURE(m_webView->QueryInterface(IID_PPV_ARGS(&webView2_16)));
wil::unique_cotaskmem_string title;
CHECK_FAILURE(m_webView->get_DocumentTitle(&title));
// Prints the current webpage, using the default printer and page settings.
// Passing nullptr for ICoreWebView2PrintSettings causes the default print settings to be used.
CHECK_FAILURE(webView2_16->Print(
nullptr, Callback<ICoreWebView2PrintCompletedHandler>(
[title = std::move(title), this](HRESULT errorCode,
COREWEBVIEW2_PRINT_STATUS printStatus) -> HRESULT
{
std::wstring message = L"";
if (errorCode == S_OK && printStatus == COREWEBVIEW2_PRINT_STATUS_SUCCEEDED)
{
message = L"Printing " + std::wstring(title.get()) +
L" document to printer succeeded";
}
else if (errorCode == S_OK && printStatus == COREWEBVIEW2_PRINT_STATUS_PRINTER_UNAVAILABLE)
{
message = L"Printer is not available, offline or error state";
}
else if (errorCode == E_ABORT)
{
message = L"Printing " + std::wstring(title.get()) +
L" document already in progress";
}
else
{
message = L"Printing " + std::wstring(title.get()) +
L" document to printer is failed";
}
AsyncMessageBox(message, L"Print to default printer");
return S_OK;
})
.Get()));
return true;
}
範例 2:使用自訂列印設定列印至指定印表機的 Print 方法
此範例會使用指定的設定,將目前的網頁列印到特定的印表機。
async void PrintToPrinter()
{
string printerName = GetPrinterName();
CoreWebView2PrintSettings printSettings = GetSelectedPrinterPrintSettings(printerName);
string title = webView.CoreWebView2.DocumentTitle;
try
{
CoreWebView2PrintStatus printStatus = await webView.CoreWebView2.PrintAsync(printSettings);
if (printStatus == CoreWebView2PrintStatus.Succeeded)
{
MessageBox.Show(this, "Printing " + title + " document to printer succeeded", "Print to printer");
}
else if (printStatus == CoreWebView2PrintStatus.PrinterUnavailable)
{
MessageBox.Show(this, "Selected printer is not found, not available, offline or error state", "Print to printer");
}
else
{
MessageBox.Show(this, "Printing " + title + " document to printer is failed", "Print");
}
}
catch(ArgumentException)
{
MessageBox.Show(this, "Invalid settings provided for the specified printer", "Print");
}
catch (Exception)
{
MessageBox.Show(this, "Printing " + title + " document already in progress", "Print");
}
}
// Gets the printer name by displaying the list of installed printers to the user and
// returns the name of the user's selected printer.
string GetPrinterName()
{
// Use GetPrintQueues() of LocalPrintServer from System.Printing to get the list of locally installed printers.
// Display the list of printers to the user and get the desired printer to use.
// Return the name of the selected printer.
}
// Gets the print settings for the selected printer.
// You can also get the capabilities from the native printer API, and display them
// to the user to get the print settings for the current webpage and for the selected printer.
CoreWebView2PrintSettings GetSelectedPrinterPrintSettings(string printerName)
{
CoreWebView2PrintSettings printSettings = null;
printSettings = WebViewEnvironment.CreatePrintSettings();
printSettings.ShouldPrintBackgrounds = true;
printSettings.ShouldPrintHeaderAndFooter = true;
return printSettings;
// or
// Get PrintQueue for the selected printer and use GetPrintCapabilities() of PrintQueue from System.Printing
// to get the capabilities of the selected printer.
// Display the printer capabilities to the user along with the page settings.
// Return the user selected settings.
}
async void PrintToPrinter(object sender, RoutedEventArgs e)
{
string printerName = GetPrinterName();
CoreWebView2PrintSettings printSettings = GetSelectedPrinterPrintSettings(printerName);
string title = WebView2.CoreWebView2.DocumentTitle;
MessageDialog dialog = new MessageDialog("", "Print");
try
{
CoreWebView2PrintStatus printStatus =
await WebView2.CoreWebView2.PrintAsync(printSettings);
if (printStatus == CoreWebView2PrintStatus.Succeeded)
{
dialog = new MessageDialog("Printing " + title +
" document to printer succeeded", "Print to printer");
}
else if (printStatus == CoreWebView2PrintStatus.PrinterUnavailable)
{
dialog = new MessageDialog("Selected printer is not found, not available, " +
"offline or error state", "Print to printer");
}
else
{
dialog = new MessageDialog("Printing " + title +
" document to printer is failed", "Print");
}
}
catch (ArgumentException)
{
dialog = new MessageDialog("Invalid settings provided for the specified printer", "Print");
}
catch (Exception)
{
dialog = new MessageDialog("Printing " + title + " document already in progress", "Print");
}
await dialog.ShowAsync();
}
// Gets the printer name by displaying the list of installed printers to the user,
// and returns the user-selected printer.
string GetPrinterName()
{
// Use DeviceInformation.FindAllAsync to get the list of local printers with AQS as:
// System.Devices.HardwareIds:~~"PRINTENUM\LocalPrintQueue"
// Display the list of printers to the user, and get the desired printer to use.
// Return the name of the user's selected printer.
}
// Gets print settings for the selected printer.
// You can also get the capabilities from the printer APIs, and display them to the
// user to get the print settings for the current webpage and for the selected printer.
CoreWebView2PrintSettings GetSelectedPrinterPrintSettings(string printerName)
{
CoreWebView2PrintSettings printSettings = null;
printSettings = WebView2.CoreWebView2.Environment.CreatePrintSettings();
printSettings.ShouldPrintBackgrounds = true;
printSettings.ShouldPrintHeaderAndFooter = true;
return printSettings;
// or
// Get the print ticket and use PrintTicketCapabilities from
// Windows.Graphics.Printing.PrintTicket to get the capabilities of the selected printer.
// Display the printer capabilities to the user, along with the page settings.
// Return the user-selected settings.
}
struct SamplePrintSettings
{
COREWEBVIEW2_PRINT_ORIENTATION Orientation = COREWEBVIEW2_PRINT_ORIENTATION_PORTRAIT;
int Copies = 1;
int PagesPerSide = 1;
std::wstring Pages = L"";
COREWEBVIEW2_PRINT_COLLATION Collation = COREWEBVIEW2_PRINT_COLLATION_DEFAULT;
COREWEBVIEW2_PRINT_COLOR_MODE ColorMode = COREWEBVIEW2_PRINT_COLOR_MODE_DEFAULT;
COREWEBVIEW2_PRINT_DUPLEX Duplex = COREWEBVIEW2_PRINT_DUPLEX_DEFAULT;
COREWEBVIEW2_PRINT_MEDIA_SIZE Media = COREWEBVIEW2_PRINT_MEDIA_SIZE_DEFAULT;
double PaperWidth = 8.5;
double PaperHeight = 11;
double ScaleFactor = 1.0;
bool PrintBackgrounds = false;
bool HeaderAndFooter = false;
bool ShouldPrintSelectionOnly = false;
std::wstring HeaderTitle = L"";
std::wstring FooterUri = L"";
};
// Gets the printer name by displaying the list of installed printers to the user,
// and returns the user-selected printer.
std::wstring AppWindow::GetPrinterName()
{
// Use the Win32 EnumPrinters function to get the list of locally installed printers.
// Display the list of printers to the user and get the user-selected printer to use.
// Return the user-selected printer name.
}
// Gets the print settings for the selected printer.
// You can also get the capabilities from the native printer API, and display them
// to the user to get the print settings for the current webpage and for the
// selected printer.
SamplePrintSettings AppWindow::GetSelectedPrinterPrintSettings(std::wstring printerName)
{
SamplePrintSettings samplePrintSettings;
samplePrintSettings.PrintBackgrounds = true;
samplePrintSettings.HeaderAndFooter = true;
return samplePrintSettings;
// Or
// Use the Win32 DeviceCapabilitiesA function to get the capabilities of the selected printer.
// Display the printer capabilities to the user, along with the page settings.
// Return the user-selected settings.
}
bool AppWindow::PrintToPrinter()
{
std::wstring printerName = GetPrinterName();
// The host app's custom print settings, based on the user selection.
SamplePrintSettings samplePrintSettings = GetSelectedPrinterPrintSettings(printerName);
wil::com_ptr<ICoreWebView2_16> webView2_16;
CHECK_FAILURE(m_webView->QueryInterface(IID_PPV_ARGS(&webView2_16)));
wil::com_ptr<ICoreWebView2Environment6> webviewEnvironment6;
CHECK_FAILURE(m_webViewEnvironment->QueryInterface(IID_PPV_ARGS(&webviewEnvironment6)));
wil::com_ptr<ICoreWebView2PrintSettings> printSettings;
CHECK_FAILURE(webviewEnvironment6->CreatePrintSettings(&printSettings));
wil::com_ptr<ICoreWebView2PrintSettings2> printSettings2;
CHECK_FAILURE(printSettings->QueryInterface(IID_PPV_ARGS(&printSettings2)));
CHECK_FAILURE(printSettings2->put_Orientation(samplePrintSettings.Orientation));
CHECK_FAILURE(printSettings2->put_Copies(samplePrintSettings.Copies));
CHECK_FAILURE(printSettings2->put_PagesPerSheet(samplePrintSettings.PagesPerSide));
CHECK_FAILURE(printSettings2->put_PageRanges(samplePrintSettings.Pages.c_str()));
if (samplePrintSettings.Media == COREWEBVIEW2_PRINT_MEDIA_SIZE_CUSTOM)
{
CHECK_FAILURE(printSettings2->put_PageWidth(samplePrintSettings.PaperWidth));
CHECK_FAILURE(printSettings2->put_PageHeight(samplePrintSettings.PaperHeight));
}
CHECK_FAILURE(printSettings2->put_ColorMode(samplePrintSettings.ColorMode));
CHECK_FAILURE(printSettings2->put_Collation(samplePrintSettings.Collation));
CHECK_FAILURE(printSettings2->put_Duplex(samplePrintSettings.Duplex));
CHECK_FAILURE(printSettings2->put_ScaleFactor(samplePrintSettings.ScaleFactor));
CHECK_FAILURE(printSettings2->put_ShouldPrintBackgrounds(samplePrintSettings.PrintBackgrounds));
CHECK_FAILURE(printSettings2->put_ShouldPrintHeaderAndFooter(samplePrintSettings.HeaderAndFooter));
CHECK_FAILURE(printSettings2->put_HeaderTitle(samplePrintSettings.HeaderTitle.c_str()));
CHECK_FAILURE(printSettings2->put_FooterUri(samplePrintSettings.FooterUri.c_str()));
CHECK_FAILURE(printSettings2->put_PrinterName(printerName.c_str()));
wil::unique_cotaskmem_string title;
CHECK_FAILURE(m_webView->get_DocumentTitle(&title));
CHECK_FAILURE(webView2_16->Print(
printSettings.get(),
Callback<ICoreWebView2PrintCompletedHandler>(
[title = std::move(title), this](HRESULT errorCode,
COREWEBVIEW2_PRINT_STATUS printStatus) -> HRESULT
{
std::wstring message = L"";
if (errorCode == S_OK && printStatus == COREWEBVIEW2_PRINT_STATUS_SUCCEEDED)
{
message = L"Printing " + std::wstring(title.get()) +
L" document to printer succeeded";
}
else if (errorCode == S_OK && printStatus == COREWEBVIEW2_PRINT_STATUS_PRINTER_UNAVAILABLE)
{
message = L"Selected printer is not found, not available, offline or "
L"error state.";
}
else if (errorCode == E_INVALIDARG)
{
message = L"Invalid settings provided for the specified printer";
}
else if (errorCode == E_ABORT)
{
message = L"Printing " + std::wstring(title.get()) +
L" document already in progress";
}
else
{
message = L"Printing " + std::wstring(title.get()) +
L" document to printer is failed";
}
AsyncMessageBox(message, L"Print to printer");
return S_OK;
})
.Get()));
return true;
}
使用自訂列印設定列印至 PDF 檔案的 PrintToPdf 方法
以無訊息方式將 WebView2 控制項中的目前最上層檔列印到 PDF 檔案。 若要完全控制列印的執行方式,您可以列印到 PDF,然後建置自己的程式碼來列印 PDF。
此 API 包含非同步 PrintToPdf
方法和 PrintSettings
物件。 方法 PrintToPdf
會接受將儲存 PDF 檔案的路徑。
範例:使用自訂列印設定列印到 PDF 檔案的 PrintToPdf 方法
此範例會使用預設路徑和設定,將目前的網頁列印至 PDF 檔案。
async void PrintToPdfCmdExecuted(object target, ExecutedRoutedEventArgs e)
{
if (_isPrintToPdfInProgress)
{
MessageBox.Show(this, "Print to PDF in progress", "Print To PDF");
return;
}
CoreWebView2PrintSettings printSettings = null;
string orientationString = e.Parameter.ToString();
if (orientationString == "Landscape")
{
printSettings = WebViewEnvironment.CreatePrintSettings();
printSettings.Orientation =
CoreWebView2PrintOrientation.Landscape;
}
Microsoft.Win32.SaveFileDialog saveFileDialog =
new Microsoft.Win32.SaveFileDialog();
saveFileDialog.InitialDirectory = "C:\\";
saveFileDialog.Filter = "PDF Files|*.pdf";
Nullable<bool> result = saveFileDialog.ShowDialog();
if (result == true) {
_isPrintToPdfInProgress = true;
bool isSuccessful = await webView.CoreWebView2.PrintToPdfAsync(
saveFileDialog.FileName, printSettings);
_isPrintToPdfInProgress = false;
string message = (isSuccessful) ?
"Print to PDF succeeded" : "Print to PDF failed";
MessageBox.Show(this, message, "Print To PDF Completed");
}
}
async void PrintToPdf(bool enableLandscape)
{
MessageDialog dialog = new MessageDialog("", "Print To PDF");
if (_isPrintToPdfInProgress)
{
dialog = new MessageDialog("Print to PDF in progress", "Print To PDF");
return;
}
CoreWebView2PrintSettings printSettings = null;
if (enableLandscape)
{
printSettings = WebView2.CoreWebView2.Environment.CreatePrintSettings();
printSettings.Orientation = CoreWebView2PrintOrientation.Landscape;
}
var savePicker = new Windows.Storage.Pickers.FileSavePicker();
savePicker.FileTypeChoices.Add("PDF Files", new List<string>() { ".pdf" });
savePicker.SuggestedFileName = "WebView2_PrintedPdf";
StorageFile file = await savePicker.PickSaveFileAsync();
if (file != null)
{
_isPrintToPdfInProgress = true;
bool isSuccessful = await WebView2.CoreWebView2.PrintToPdfAsync(file.Path, printSettings);
_isPrintToPdfInProgress = false;
string message = (isSuccessful) ? "Print to PDF succeeded" : "Print to PDF failed";
dialog = new MessageDialog(message, "Print To PDF");
}
await dialog.ShowAsync();
}
void FileComponent::PrintToPdf(bool enableLandscape)
{
WCHAR defaultName[MAX_PATH] = L"WebView2_PrintedPdf.pdf";
OPENFILENAME openFileName = CreateOpenFileName(defaultName, L"PDF File\0*.pdf\0");
if (GetSaveFileName(&openFileName))
{
wil::com_ptr<ICoreWebView2PrintSettings> printSettings = nullptr;
if (enableLandscape)
{
wil::com_ptr<ICoreWebView2Environment5> webviewEnvironment5;
CHECK_FAILURE(m_appWindow->GetWebViewEnvironment()->QueryInterface(
IID_PPV_ARGS(&webviewEnvironment5)));
if (webviewEnvironment5)
{
CHECK_FAILURE(webviewEnvironment5->CreatePrintSettings(&printSettings));
CHECK_FAILURE(
printSettings->put_Orientation(COREWEBVIEW2_PRINT_ORIENTATION_LANDSCAPE));
}
}
wil::com_ptr<ICoreWebView2_7> webview2_7;
CHECK_FAILURE(m_webView->QueryInterface(IID_PPV_ARGS(&webview2_7)));
if (webview2_7)
{
m_printToPdfInProgress = true;
CHECK_FAILURE(webview2_7->PrintToPdf(
openFileName.lpstrFile, printSettings.get(),
Callback<ICoreWebView2PrintToPdfCompletedHandler>(
[this](HRESULT errorCode, BOOL isSuccessful) -> HRESULT {
CHECK_FAILURE(errorCode);
m_printToPdfInProgress = false;
auto showDialog = [isSuccessful] {
MessageBox(
nullptr,
(isSuccessful) ? L"Print to PDF succeeded"
: L"Print to PDF failed",
L"Print to PDF Completed", MB_OK);
};
m_appWindow->RunAsync([showDialog]() { showDialog(); });
return S_OK;
})
.Get()));
}
}
}
使用自訂列印設定列印至 PDF 資料流程的 PrintToPdfStream 方法
以無訊息方式將 WebView2 控制項中的目前最上層檔列印到 PDF 資料流程。 若要完全控制列印的執行方式,您可以列印到 PDF,然後建置自己的程式碼來列印 PDF。 此 API 包含非同步 PrintToPdfStream
方法和 PrintSettings
物件。
範例:使用自訂列印設定列印到 PDF 資料流程的 PrintToPdfStream 方法
本範例會將目前網頁的 PDF 資料列印至資料流程。
async void PrintToPdfStream()
{
try
{
string title = webView.CoreWebView2.DocumentTitle;
// Passing null for PrintSettings causes the default print settings to be used.
System.IO.Stream stream = await webView.CoreWebView2.PrintToPdfStreamAsync(null);
DisplayPdfDataInPrintDialog(stream);
MessageBox.Show(this, "Printing " + title + " document to PDF Stream " +
((stream != null) ? "succeeded" : "failed"), "Print To PDF Stream");
}
catch(Exception exception)
{
MessageBox.Show(this, "Printing to PDF Stream failed: " + exception.Message, "Print to PDF Stream");
}
}
// Function to display current webpage PDF data in a custom Print Preview dialog.
void DisplayPdfDataInPrintDialog(Stream pdfData)
{
// You can display the printable PDF data to the user in a custom Print Preview dialog.
}
async void PrintToPdfStream(object sender, RoutedEventArgs e)
{
MessageDialog dialog = new MessageDialog("", "Print to PDF Stream");
try
{
string title = WebView2.CoreWebView2.DocumentTitle;
// Passing null for PrintSettings causes the default print settings to be used.
Windows.Storage.Streams.IRandomAccessStream stream =
await WebView2.CoreWebView2.PrintToPdfStreamAsync(null);
DisplayPdfDataInPrintDialog(stream);
dialog = new MessageDialog("Printing" + title + " document to PDF Stream "
+ ((stream != null) ? "succeeded" : "failed"), "Print To PDF Stream");
}
catch (Exception exception)
{
dialog = new MessageDialog("Printing to PDF Stream failed: " + exception.Message,
"Print to PDF Stream");
}
await dialog.ShowAsync();
}
// Function to display the current page PDF data in a custom Print Preview dialog.
void DisplayPdfDataInPrintDialog(Windows.Storage.Streams.IRandomAccessStream pdfData)
{
// You can display the printable PDF data to the user in a custom Print Preview dialog.
}
static void DisplayPdfDataInPrintDialog(IStream* pdfData)
{
// You can display the printable PDF data to the user in a custom Print Preview dialog.
}
bool AppWindow::PrintToPdfStream()
{
wil::com_ptr<ICoreWebView2_16> webView2_16;
CHECK_FAILURE(m_webView->QueryInterface(IID_PPV_ARGS(&webView2_16)));
wil::unique_cotaskmem_string title;
CHECK_FAILURE(m_webView->get_DocumentTitle(&title));
// Passing nullptr for ICoreWebView2PrintSettings causes the default print settings to be used.
CHECK_FAILURE(
webView2_16->PrintToPdfStream(
nullptr,
Callback<ICoreWebView2PrintToPdfStreamCompletedHandler>(
[title = std::move(title), this](HRESULT errorCode, IStream* pdfData) -> HRESULT
{
DisplayPdfDataInPrintDialog(pdfData);
std::wstring message = L"Printing " + std::wstring(title.get()) +
L" document to PDF Stream " +
((errorCode == S_OK && pdfData != nullptr) ? L"succeeded" : L"failed");
AsyncMessageBox(message, L"Print to PDF Stream");
return S_OK;
})
.Get()));
return true;
}
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