#QT PLAIN TEXT EDITOR HOW TO#
#QT PLAIN TEXT EDITOR SOFTWARE#

When it comes to editing code, we prefer QPlainTextEdit over QTextEdit because it is optimized for handling plain text. We make room for our line number area by setting the left margin of the viewport to the size we need to draw the line numbers. QPlainTextEdit inherits from QAbstractScrollArea, and editing takes place within its viewport()'s margins. We keep a separate widget in CodeEditor ( LineNumberArea) onto which we draw the line numbers. We implement the editor in CodeEditor, which is a widget that inherits QPlainTextEdit. The editor will highlight the line containing the cursor.

#QT PLAIN TEXT EDITOR HOW TO#

All other trademarks are property of their respective owners.The Code Editor example shows how to create a simple editor that has line numbers and that highlights the current line.Īs can be seen from the image, the editor displays the line numbers in an area to the left of the area for editing. Qt and respective logos are trademarks of The Qt Company Ltd.

#QT PLAIN TEXT EDITOR SOFTWARE#

The documentation provided herein is licensed under the terms of the GNU Free Documentation License version 1.3 as published by the Free Software Foundation. Represents the properties of a cell in a QTextTableįormatting information for table cells in a QTextDocumentįormatting information for tables in a QTextDocumentĭocumentation contributions included herein are the copyrights of Represents a line of text inside a QTextLayoutĭecorated list of items in a QTextDocumentįormatting information for lists in a QTextDocumentīase class for different kinds of objects that can group parts of a QTextDocument togetherĭescription of general rich text properties Represents an inline object in a QAbstractTextDocumentLayout and its implementationsĮncapsulates the different types of length used in a QTextDocument

Iterator for reading the contents of a QTextFrameįormatting information for frames in a QTextDocumentįormatting information for images in a QTextDocument Holds a piece of text in a QTextDocument with a single QTextCharFormat Widget that is used to edit and display both plain and rich textįormatting information for a QTextDocument Represents a piece of formatted text from a QTextDocumentįormat-independent interface for writing a QTextDocument to files or other devices Offers an API to access and modify QTextDocuments Rich text browser with hypertext navigationįormatting information for characters in a QTextDocument Used to associate custom data with blocks of text QTextBlock::iterator class provides an iterator for reading the contents of a QTextBlockįormatting information for blocks of text in a QTextDocumentĬontainer for text blocks within a QTextDocument Widget that is used to edit and display plain textĪllows you to define syntax highlighting rules, and in addition you can use the class to query a document's current formatting or user dataĬontainer for text fragments in a QTextDocument Implements a plain text layout for QTextDocument Specifies a query for a font used for drawing text Qt provides an extensive collection of classes for parsing, rendering manipulating and editing rich text.Ībstract base class used to implement custom layouts for QTextDocuments Supported HTML Subset lists the HTML tags supported by QTextDocument.Advanced Rich Text Processing examines advanced rich text editing tasks.Common Rich Text Editing Tasks examines some common tasks that involve reading or manipulating rich text documents.Document Layouts briefly explains the role of document layouts.The QTextCursor Interface explains how rich text documents can be edited using the cursor-based interface.Rich Text Document Structure outlines the different kinds of elements in a QTextDocument, and describes how they are arranged in a document structure.This document is divided up into chapters for convenient reference: The read-only hierarchical interface is most useful when performing operations such as searching and document export. The main advantage of the cursor-based interface is that the text can be edited using operations that mimic a user's interaction with an editor, without losing the underlying structure of the document.

The information within a document can be accessed via two complementary interfaces: A cursor-based interface is used for editing, and a read-only hierarchical interface provides a high level overview of the document structure. This enables the developer to create and modify structured rich text documents without having to prepare content in an intermediate markup format. Unlike previous rich text support in Qt, the new classes are centered around the QTextDocument class rather than raw textual information. The Scribe framework provides a set of classes for reading and manipulating structured rich text documents.

Qt plain text editor