逻辑如下:
1.使用QPlainText中的documnet获取文档指针;
2.遍历这个文档指针(操作和适配器一样)
程序运行截图如下:
源码如下:
widget.h
#ifndef WIDGET_H
#define WIDGET_H
#include <QWidget>
class QTimer;
namespace Ui {
class Widget;
}
class Widget : public QWidget
{
Q_OBJECT
public:
explicit Widget(QWidget *parent = 0);
~Widget();
public slots:
void printPlainText();
private:
Ui::Widget *ui;
QTimer *m_timer;
};
#endif // WIDGET_H
main.cpp
#include "widget.h"
#include <QApplication>
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
Widget w;
w.show();
return a.exec();
}
widget.cpp
#include "widget.h"
#include "ui_widget.h"
#include <QTimer>
#include <QTextDocument>
#include <QDebug>
#include <QTextBlock>
Widget::Widget(QWidget *parent) :
QWidget(parent),
ui(new Ui::Widget)
{
ui->setupUi(this);
m_timer=new QTimer;
connect(m_timer,SIGNAL(timeout()),this,SLOT(printPlainText()));
m_timer->start(1000);
}
Widget::~Widget()
{
delete ui;
}
void Widget::printPlainText()
{
QTextDocument *document=Q_NULLPTR;
QTextBlock textBlock;
document=ui->plainTextEdit->document();
for(textBlock=document->begin();textBlock!=document->end();textBlock=textBlock.next()){
qDebug()<<textBlock.text();
}
qDebug()<<"---------------华丽的分割线---------------";
}