TWebView2

Source: source/classes/twebview2.prg

Overview

TWebView2 embeds Microsoft Edge WebView2 in a FiveWin window or dialog. Use it to host modern HTML/CSS/JS UIs next to native FWH controls. Requires the WebView2 Runtime (Evergreen or Fixed Version).

Desktop + Web with one UI

Sample samples/DesktopWeb/login.prg shows a full pattern where desktop and browser share the same HTML/CSS/JS:

• An embedded multi-thread HTTP server listens on port 8080 and serves login + dashboard pages generated in Harbour.
• The desktop shell creates TWebView2 and Navigate("http://localhost:8080/").
• Any browser opens the same URL and gets the identical UI and API.
• Credential validation runs in PRG (ValidateLogin), not in JavaScript. Sessions use cookie DWSESS.

// Desktop shell (simplified)
StartHttpServer( 8080 )
oWeb := TWebView2():New()
oWeb:Navigate( "http://localhost:8080/" )
oWeb:Run()

Build with multi-thread VM: samples\DesktopWeb\build.bat or build_new.bat login hm64 -mt. Demo users: admin/1234, demo/demo.

Key methods

• New( oWndParent, cUserDataFolder, cBrowserExecutableFolder )
• Navigate( cUrl ) / SetHtml( cHtml )
• Eval( cJavaScript ) / InjectJavascript( cScript )
• bOnBind — receives arguments from JS SendToFWH(...)
• SetSize, SetTitle, SetUserAgent, OpenDevToolsWindow, End

For Remote View + WebView2 together, see samples/RemoteView/testrvweb.prg and Remote View.

See Classes Alphabetical for full class list.

See Also

• TWebView
• Remote View
• What's New 26.07
• Classes Alphabetical
• Functions