File editing component

File editing component -1
QLineEdit: Single line text editing component
QPlainTextEdit： Multi line common editing component
QTextEdit： Multi select rich text editing component ： Suitable for word This kind of complicated .

Qt Built in functions of common text editing components in
1. Right click popup menu
2. Shortcut key function ： Copy , Paste , Shear, etc .

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QLineEdit, QPlainTextEdit, QTextEdit
MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent),
lineEdit(this), plainEdit(this), textEdit(this)
{
resize(600, 420); // Set window size

    lineEdit.move(20, 20);
    lineEdit.resize(560, 100);
    lineEdit.insert("QLineEdit");
    lineEdit.insert("\n");
    lineEdit.insert("<img src=\"C:\\Users\\hp\\Desktop\\D.T.png\" />");

    plainEdit.move(20, 130);
    plainEdit.resize(560, 130);
    plainEdit.insertPlainText("QPlainTextEdit");
    plainEdit.insertPlainText("\n");
    plainEdit.insertPlainText("<img src=\"C:\\Users\\hp\\Desktop\\D.T.png\" />");

    textEdit.move(20, 270);
    textEdit.resize(560, 130);
    textEdit.insertPlainText("QTextEdit");
    textEdit.insertPlainText("\n");
    textEdit.insertHtml("<img src=\"C:\\Users\\hp\\Desktop\\D.T.png\" />"); // html Components 
}