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Complete Win32 guide (#101)
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‎GettingStartedGuides/Win32_GettingStarted/HelloWebView.cpp

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#include <wrl.h>
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#include <wil/com.h>
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// include WebView2 header
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#include "WebView2.h"
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using namespace Microsoft::WRL;
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@@ -104,6 +105,86 @@ int CALLBACK WinMain(
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UpdateWindow(hWnd);
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// <-- WebView2 sample code starts here -->
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// Step 3 - Create a single WebView within the parent window
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// Locate the browser and set up the environment for WebView
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CreateCoreWebView2EnvironmentWithOptions(nullptr, nullptr, nullptr,
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Callback<ICoreWebView2CreateCoreWebView2EnvironmentCompletedHandler>(
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[hWnd](HRESULT result, ICoreWebView2Environment* env) -> HRESULT {
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// Create a CoreWebView2Controller and get the associated CoreWebView2 whose parent is the main window hWnd
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env->CreateCoreWebView2Controller(hWnd, Callback<ICoreWebView2CreateCoreWebView2ControllerCompletedHandler>(
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[hWnd](HRESULT result, ICoreWebView2Controller* controller) -> HRESULT {
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if (controller != nullptr) {
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webviewController = controller;
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webviewController->get_CoreWebView2(&webviewWindow);
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}
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// Add a few settings for the webview
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// The demo step is redundant since the values are the default settings
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ICoreWebView2Settings* Settings;
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webviewWindow->get_Settings(&Settings);
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Settings->put_IsScriptEnabled(TRUE);
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Settings->put_AreDefaultScriptDialogsEnabled(TRUE);
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Settings->put_IsWebMessageEnabled(TRUE);
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// Resize WebView to fit the bounds of the parent window
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RECT bounds;
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GetClientRect(hWnd, &bounds);
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webviewController->put_Bounds(bounds);
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// Schedule an async task to navigate to Bing
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webviewWindow->Navigate(L"https://www.bing.com/");
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// Step 4 - Navigation events
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// register an ICoreWebView2NavigationStartingEventHandler to cancel any non-https navigation
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EventRegistrationToken token;
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webviewWindow->add_NavigationStarting(Callback<ICoreWebView2NavigationStartingEventHandler>(
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[](ICoreWebView2* webview, ICoreWebView2NavigationStartingEventArgs* args) -> HRESULT {
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PWSTR uri;
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args->get_Uri(&uri);
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std::wstring source(uri);
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if (source.substr(0, 5) != L"https") {
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args->put_Cancel(true);
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}
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CoTaskMemFree(uri);
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return S_OK;
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}).Get(), &token);
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// Step 5 - Scripting
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// Schedule an async task to add initialization script that freezes the Object object
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webviewWindow->AddScriptToExecuteOnDocumentCreated(L"Object.freeze(Object);", nullptr);
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// Schedule an async task to get the document URL
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webviewWindow->ExecuteScript(L"window.document.URL;", Callback<ICoreWebView2ExecuteScriptCompletedHandler>(
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[](HRESULT errorCode, LPCWSTR resultObjectAsJson) -> HRESULT {
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LPCWSTR URL = resultObjectAsJson;
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//doSomethingWithURL(URL);
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return S_OK;
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}).Get());
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// Step 6 - Communication between host and web content
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// Set an event handler for the host to return received message back to the web content
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webviewWindow->add_WebMessageReceived(Callback<ICoreWebView2WebMessageReceivedEventHandler>(
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[](ICoreWebView2* webview, ICoreWebView2WebMessageReceivedEventArgs* args) -> HRESULT {
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PWSTR message;
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args->TryGetWebMessageAsString(&message);
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// processMessage(&message);
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webview->PostWebMessageAsString(message);
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CoTaskMemFree(message);
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return S_OK;
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}).Get(), &token);
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// Schedule an async task to add initialization script that
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// 1) Add an listener to print message from the host
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// 2) Post document URL to the host
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webviewWindow->AddScriptToExecuteOnDocumentCreated(
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L"window.chrome.webview.addEventListener(\'message\', event => alert(event.data));" \
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L"window.chrome.webview.postMessage(window.document.URL);",
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nullptr);
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return S_OK;
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}).Get());
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return S_OK;
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}).Get());
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‎GettingStartedGuides/Win32_GettingStarted/WebView2GettingStarted.vcxproj

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<ItemGroup>
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<ClCompile Include="HelloWebView.cpp" />
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</ItemGroup>
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<ItemGroup>
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<None Include="packages.config" />
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</ItemGroup>
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<Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
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<ImportGroup Label="ExtensionTargets">
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<Import Project="packages\Microsoft.Windows.ImplementationLibrary.1.0.191107.2\build\native\Microsoft.Windows.ImplementationLibrary.targets" Condition="Exists('packages\Microsoft.Windows.ImplementationLibrary.1.0.191107.2\build\native\Microsoft.Windows.ImplementationLibrary.targets')" />
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<Import Project="packages\Microsoft.Web.WebView2.1.0.902.49\build\native\Microsoft.Web.WebView2.targets" Condition="Exists('packages\Microsoft.Web.WebView2.1.0.902.49\build\native\Microsoft.Web.WebView2.targets')" />
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</ImportGroup>
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<Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
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<PropertyGroup>
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<ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them. For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
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</PropertyGroup>
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<Error Condition="!Exists('packages\Microsoft.Windows.ImplementationLibrary.1.0.191107.2\build\native\Microsoft.Windows.ImplementationLibrary.targets')" Text="$([System.String]::Format('$(ErrorText)', 'packages\Microsoft.Windows.ImplementationLibrary.1.0.191107.2\build\native\Microsoft.Windows.ImplementationLibrary.targets'))" />
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<Error Condition="!Exists('packages\Microsoft.Web.WebView2.1.0.902.49\build\native\Microsoft.Web.WebView2.targets')" Text="$([System.String]::Format('$(ErrorText)', 'packages\Microsoft.Web.WebView2.1.0.902.49\build\native\Microsoft.Web.WebView2.targets'))" />
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</Target>
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</Project>

‎GettingStartedGuides/Win32_GettingStarted/WebView2GettingStarted.vcxproj.filters

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<Filter>Source Files</Filter>
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</ClCompile>
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</ItemGroup>
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<ItemGroup>
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<None Include="packages.config" />
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</ItemGroup>
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</Project>

‎GettingStartedGuides/Win32_GettingStarted/packages.config

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<?xml version="1.0" encoding="utf-8"?>
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<packages>
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<package id="Microsoft.Web.WebView2" version="1.0.902.49" targetFramework="native" />
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<package id="Microsoft.Windows.ImplementationLibrary" version="1.0.191107.2" targetFramework="native" />
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</packages>

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