31.QT坐标系

• dialog.h

  #ifndef DIALOG_H
  #define DIALOG_H
  
  #include <QDialog>
  #include <QLabel>
  #include <QGridLayout>
  #include <QMouseEvent>
  #include <QEvent>
  
  namespace Ui {
  class Dialog;
  }
  
  class Dialog : public QDialog
  {
      Q_OBJECT
  
  public:
      explicit Dialog(QWidget *parent = 0);
      ~Dialog();
  
  private:
      Ui::Dialog *ui;
  
  25     void moveEvent(QMoveEvent *event);
  26     void resizeEvent(QResizeEvent *event);
  27 
  28 public:
  29     void show1();
  };
  
  #endif // DIALOG_H

• dialog.cpp

  #include "dialog.h"
  #include "ui_dialog.h"
  #include <QDebug>
  
  Dialog::Dialog(QWidget *parent) :
      QDialog(parent),
      ui(new Ui::Dialog)
  {
      ui->setupUi(this);
  }
  
  Dialog::~Dialog()
  {
      delete ui;
  }
  
  void Dialog::moveEvent(QMoveEvent *event)
  {
      qDebug() << "1234"<<endl;
      show1();
  }
  
  void Dialog::resizeEvent(QResizeEvent *event)
  {
      qDebug() << "1234"<<endl;
      show1();
  }
  
  void Dialog::show1()
  {
      QString infoall;
      QString x;
  33     x.sprintf("x()=%d",this->x());
      infoall = infoall +x + "
  ";
  
      QString y;
  37     y.sprintf("y()=%d",this->y());
      infoall = infoall +y + "
  ";
  
      QString width;
  41     width.sprintf("width=%d",this->width());
      infoall = infoall +width + "
  ";
  
      QString height;
  45     height.sprintf("height=%d",this->height());
      infoall = infoall +height + "
  ";
      ui->textEdit->setText(infoall);
  }