WebUI4Delphi

WebUI4Delphi

WebUI4Delphi is a WebUI wrapper, which allows you to use any web browser as a GUI, with Delphi or Lazarus/FPC in the backend and HTML5 in the frontend.

WebUI allows you to link your Delphi or Lazarus application with a web app that runs in a web browser installed in the operating system. Originally WebUI was created to have all the UI code in the web browser and the rest of the code in your hidden Delphi or Lazarus application. However, you can also decide to have a visible Delphi or Lazarus application communicating with a HTML5 app. You can get web browser events in your desktop application, call Pascal functions from JS, call JS functions from Pascal code, execute JavaScript, etc.

WebUI4Delphi can be used in Delphi or Lazarus applications for Windows, Linux and MacOS.

WebUI4Delphi was developed and tested on Delphi 13.2 and Lazarus 4.8/FPC 3.2.2 but it also supports Delphi 2010.

WebUI4Delphi includes VCL, FireMonkey (FMX), LCL and console examples.

WebUI4Delphi demos have been tested in Windows 10, Windows 11, Linux Mint 21.2 and Raspberry Pi OS.

WebUI doesn’t embed a web browser in your application. It’s used as a bridge between a desktop application and the web browser running an HTML5 app. If you need to embed a web browser instead of using the installed web browser then consider using CEF4Delphi or WebView4Delphi.

Features

• Fully Independent (No need for any third-party runtimes)
• Lightweight & Small memory footprint
• Fast binary communication protocol between WebUI and the browser (Instead of JSON)
• Multi-platform & Multi-Browser
• Using private profile for safety
• Original library written in Pure C
• Help insight documentation.
• Help file available.

Minimal Example

program Minimal;

{$APPTYPE CONSOLE}

{$R *.res}

uses
  System.SysUtils, uWebUI, uWebUIWindow, uWebUITypes;

var
  LWindow : IWebUIWindow;

begin
  try
    WebUI := TWebUI.Create;
    if WebUI.Initialize then
      begin
        LWindow := TWebUIWindow.Create;
        LWindow.Show('<html><head><script src="webui.js"></script></head> Hello World ! </html>');
        WebUI.Wait;
      end;
  except
    on E: Exception do
      Writeln(E.ClassName, ': ', E.Message);
  end;
end.

More examples

Text editor

This text_editor is a lightweight and portable example written in Delphi and JavaScript using WebUI as the GUI.

Installation

• Open the file packages\WebUI4Delphi.dproj.
• Select the Projects→Build all projects menu option.
• Add the source directory to the search path in your applications.
• Add the “FMX” conditional define in your project options. This define is only required for Firemonkey applications.

Links

• Developer Forums
• WebUI project
• WebUI Pascal project for Lazarus
• C API documentation

Support

If you find this project useful, please consider making a donation.

You can also support this project with Patreon.

You can also support this project with Liberapay.

Related projects

• CEF4Delphi
• WebView4Delphi
• VirtualTouchKeyboard4Delphi
• PasDoc

Other resources

• Learn Delphi
• Essential Pascal by Marco Cantù
• Free Pascal Reference guide
• Modern Object Pascal Introduction for Programmers
• FreePascal from Square One by Jeff Duntemann
• Pascal and Lazarus Books and Magazines
• Lazarus Documentation
• Delphi Succinctly
• Start Programming using Object Pascal
• Free Pascal and Lazarus Programming Textbook
• LAZARUS FREE PASCAL Développement rapide

Additional: Delphinus-Support