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📜  bootstrap 4 form modal popup - Delphi (1)

📅  最后修改于: 2023-12-03 14:39:33.244000             🧑  作者: Mango

Bootstrap 4 Form Modal Popup - Delphi

Introduction

In this guide, we will explore how to implement a form modal popup using Bootstrap 4 in Delphi. A modal popup is a dialog window that appears on top of the main content and requires user interaction to continue. This is a commonly used UI pattern for displaying additional information or capturing user input.

Prerequisites

To follow along with this tutorial, you will need the following:

  • Delphi development environment installed.
  • Basic knowledge of Delphi programming.
  • Understanding of HTML, CSS, and Bootstrap 4.
Step 1: Set up the Delphi Project
  1. Open Delphi and create a new project.
  2. Add a new form to the project.
Step 2: Add Bootstrap 4 Resources

To use Bootstrap 4 in your Delphi project, you need to add the necessary CSS and JavaScript files.

  1. Download the Bootstrap 4 files from the official website: https://getbootstrap.com/.
  2. Extract the downloaded files to a desired location.
  3. Copy the bootstrap.min.css file to your Delphi project's folder.
  4. In Delphi, go to "Project" > "Options" > "Resources and Images".
  5. Add the bootstrap.min.css file as a resource.
Step 3: Design the Form
  1. Open the form in the Delphi designer.
  2. Design the form according to your requirements. Add textboxes, buttons, labels, or any other form elements you need.
  3. Set the form's BorderStyle property to bsNone to give it a modal-like appearance.
Step 4: Create the Bootstrap Modal Popup
  1. Add a TButton to the form for triggering the modal popup.
  2. Double-click the button to create an OnClick event handler.
  3. In the event handler, write the following code:
procedure TForm1.Button1Click(Sender: TObject);
begin
  // Show the modal popup
  WebBrowser1.Navigate('about:blank');
  WebBrowser1.Document.Write('<html><head><link rel="stylesheet" type="text/css" href="bootstrap.min.css" /></head><body>');
  WebBrowser1.Document.Write('<div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true">');
  WebBrowser1.Document.Write('<div class="modal-dialog" role="document">');
  WebBrowser1.Document.Write('<div class="modal-content">');
  WebBrowser1.Document.Write('<div class="modal-header">');
  WebBrowser1.Document.Write('<h5 class="modal-title" id="myModalLabel">Modal Title</h5>');
  WebBrowser1.Document.Write('<button type="button" class="close" data-dismiss="modal" aria-label="Close">');
  WebBrowser1.Document.Write('<span aria-hidden="true">&times;</span>');
  WebBrowser1.Document.Write('</button>');
  WebBrowser1.Document.Write('</div>');
  WebBrowser1.Document.Write('<div class="modal-body">');
  WebBrowser1.Document.Write('Modal body content goes here.');
  WebBrowser1.Document.Write('</div>');
  WebBrowser1.Document.Write('<div class="modal-footer">');
  WebBrowser1.Document.Write('<button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>');
  WebBrowser1.Document.Write('<button type="button" class="btn btn-primary">Save changes</button>');
  WebBrowser1.Document.Write('</div>');
  WebBrowser1.Document.Write('</div>');
  WebBrowser1.Document.Write('</div>');
  WebBrowser1.Document.Write('</div>');
  WebBrowser1.Document.Write('</body></html>');
  WebBrowser1.Document.ParentWindow.ExecScript('$("#myModal").modal();', 'JavaScript');
end;

Make sure to replace 'bootstrap.min.css' with the correct path of the CSS file if necessary.

  1. Run the project and click the button to see the modal popup in action.
Conclusion

Congratulations! You have successfully implemented a form modal popup using Bootstrap 4 in Delphi. Modal popups are a great way to enhance user experience by displaying additional information or capturing user input without leaving the current page. Feel free to customize the modal as per your project requirements.