QTextCursor

QTextCursor is a class in the Qt framework that represents a cursor within a QTextDocument. It provides functionality to access and manipulate the content of the document. A QTextCursor can be thought of as a pointer to a specific position or selection within the document's text.

The QTextCursor allows for a variety of operations. It can move its position forward or backward by characters, words, lines, or paragraphs. It can also select text within the document, either by setting a start and end position or by moving the cursor while maintaining a selection. Editing operations are also performed through the cursor, such as inserting text, deleting selected text, or replacing it.

Key features of QTextCursor include its ability to navigate through different levels of granularity within the document. It can also access and modify formatting information associated with the text, such as font, color, and alignment. The cursor can be positioned at the beginning or end of the document or specific blocks. Multiple QTextCursor objects can exist for a single QTextDocument, allowing for complex manipulation and tracking of different document positions. It is a fundamental tool for interacting with rich text documents in Qt applications.