Який об'єкт Lazarus відтворює вікно програми?
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Ответ:
Який об'єкт Lazarus відтворює вікно програми?
TForm
Lazarus is an open-source integrated development environment (IDE) that is primarily used for developing software applications using the Object Pascal programming language. It is designed to be compatible with the Delphi programming language and provides a similar development environment.
In Lazarus, the main object that represents the window of a program is called a Form. A Form is a visual component that represents a window or a dialog box in a graphical user interface (GUI) application. It provides a container for other visual components, such as buttons, labels, text boxes, and so on.
When you create a new project in Lazarus, a default Form is automatically created for you. This Form serves as the main window of your application. You can customize the appearance and behavior of the Form by adding and configuring various visual components and writing code to handle events.
The Form object in Lazarus provides a wide range of properties and methods that allow you to control various aspects of the window, such as its size, position, title, and visibility. You can also handle events, such as button clicks or mouse movements, to add interactivity to your application.
Here is an example of how a Form can be created and displayed in Lazarus:
```pascal unit MainForm;
{$mode objfpc}{$H+}
interface
uses Classes, SysUtils, Forms, Controls, Graphics, Dialogs;
type TMainForm = class(TForm) private { Private declarations } public { Public declarations } end;
var MainForm: TMainForm;
implementation
{$R *.lfm}
begin Application.Initialize; Application.CreateForm(TMainForm, MainForm); Application.Run; end. ```
In this example, a new unit called "MainForm" is created, which represents the main Form of the application. The `TMainForm` class is derived from the `TForm` class, which provides the basic functionality for a window. The `MainForm` variable is an instance of the `TMainForm` class.
The `Application` object is used to initialize the application and create the main Form. The `Application.Run` method starts the main message loop, which handles user input and updates the GUI.
By adding visual components and writing code to handle events, you can create a fully functional window for your Lazarus application.
I hope this explanation helps! Let me know if you have any further questions.
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