Method PrintToPdfStream

SampleApps/WebView2APISample/AppWindow.cpp:1395–1421

[PrintToPdfStream] This example prints the Pdf data of the current page to a stream.

//! [PrintToPdfStream]
// This example prints the Pdf data of the current page to a stream.
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` results in default print settings 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"succedded" : L"failed");

                AsyncMessageBox(message, L"Print to PDF Stream");

                return S_OK;
            })
            .Get()));
    return true;
}
//! [PrintToPdfStream]

//! [Start]