QTextEdit and mark Text

[wysota]

This works for me:

#include <QTextEdit>
#include <QApplication>
#include <QTextDocument>
#include <QTextCursor>
 
 
 
int main(int argc, char **argv){
  QApplication app(argc, argv);
  QTextDocument doc;
  QString str;
  for(int i=0;i<20;i++) str+=QString("Line%1\n").arg(i+1);
  doc.setPlainText(str);
  QTextEdit te;
  te.setDocument(&doc);
  QTextCursor cur = te.textCursor();
  do{
    cur = doc.find("7", cur);
    if(!cur.isNull()){
        cur.select(QTextCursor::LineUnderCursor);
        QTextCharFormat format = cur.charFormat();
        format.setBackground(Qt::green);
        cur.setCharFormat(format);
    }
  } while(!cur.isNull());
  te.show();
  return app.exec();
}

#include <QTextEdit>
#include <QApplication>
#include <QTextDocument>
#include <QTextCursor>



int main(int argc, char **argv){
  QApplication app(argc, argv);
  QTextDocument doc;
  QString str;
  for(int i=0;i<20;i++) str+=QString("Line%1\n").arg(i+1);
  doc.setPlainText(str);
  QTextEdit te;
  te.setDocument(&doc);
  QTextCursor cur = te.textCursor();
  do{
    cur = doc.find("7", cur);
    if(!cur.isNull()){
        cur.select(QTextCursor::LineUnderCursor);
        QTextCharFormat format = cur.charFormat();
        format.setBackground(Qt::green);
        cur.setCharFormat(format);
    }
  } while(!cur.isNull());
  te.show();
  return app.exec();
}

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