一个对话框的坐标参数显示

介绍

这个是为了得到对话框的长宽，各个点的坐标，相对坐标，相对父窗口的坐标，相对在桌面的坐标

代码

geometry.h

/**
* 书本:【Qt5开发及实例】
* 功能:显示对话框的坐标信息，参数信息
* 文件:geometry.cpp
* 时间:2015年1月20日20:19:35
* 作者:cutter_point
*/
#ifndef GEOMETRY_H
#define GEOMETRY_H

#include <QDialog>
#include <QLabel>
#include <QGridLayout>

class Geometry : public QDialog
{
  Q_OBJECT

public:
  Geometry(QWidget *parent = 0);
  ~Geometry();

  //更新数据的显示
  void updateLabel();

private:
  QLabel *xLabel;     //表示对话框的最开始的x坐标横向----->
  QLabel *xValueLabel;
  QLabel *yLabel;   //表示对话框的最开始的y坐标纵向下箭头
  QLabel *yValueLabel;
  QLabel *FrmLabel;   //综合位置和对话框的宽和长
  QLabel *FrmValueLabel;
  QLabel *posLabel;   //位置坐标，就是x,y
  QLabel *posValueLabel;
  QLabel *geoLabel;   //x,y和对话框不包含标题的大小，长宽
  QLabel *geoValueLabel;
  QLabel *widthLabel;   //里面的宽
  QLabel *widthValueLabel;
  QLabel *heightLabel;      //里面的长
  QLabel *heightValueLabel;
  QLabel *rectLabel;      //起始的0,0和里面的长和宽
  QLabel *rectValueLabel;
  QLabel *sizeLabel;        //里面的长宽
  QLabel *sizeValueLabel;
  QGridLayout *mainLayout;    //网格布局

protected:
  void moveEvent(QMoveEvent *);     //对话框移动的话，坐标要改变
  void resizeEvent(QResizeEvent *);     //对话框大小改变的话

};

#endif // GEOMETRY_H

geometry.cpp

/**
* 书本:【Qt5开发及实例】
* 功能:显示对话框的坐标信息，参数信息
* 文件:geometry.cpp
* 时间:2015年1月20日20:19:35
* 作者:cutter_point
*/
#include "geometry.h"

Geometry::Geometry(QWidget *parent)   //构造函数
  : QDialog(parent)
{
  setWindowTitle(tr("cutter_point Geometry"));
  xLabel = new QLabel(tr("x():"));    //坐标x
  xValueLabel =new QLabel;
  yLabel =new QLabel(tr("y():"));
  yValueLabel =new QLabel;
  FrmLabel =new QLabel(tr("Frame:"));
  FrmValueLabel =new QLabel;
  posLabel =new QLabel(tr("pos():"));
  posValueLabel =new QLabel;
  geoLabel =new QLabel(tr("geometry():"));
  geoValueLabel =new QLabel;
  widthLabel =new QLabel(tr("width():"));
  widthValueLabel =new QLabel;
  heightLabel =new QLabel(tr("height():"));
  heightValueLabel =new QLabel;
  rectLabel =new QLabel(tr("rect():"));
  rectValueLabel =new QLabel;
  sizeLabel =new QLabel(tr("size():"));
  sizeValueLabel =new QLabel;

  mainLayout = new QGridLayout(this);   //网格布局
  mainLayout->addWidget(xLabel, 0, 0);
  mainLayout->addWidget(xValueLabel,0,1);
  mainLayout->addWidget(yLabel,1,0);
  mainLayout->addWidget(yValueLabel,1,1);
  mainLayout->addWidget(posLabel,2,0);
  mainLayout->addWidget(posValueLabel,2,1);
  mainLayout->addWidget(FrmLabel,3,0);
  mainLayout->addWidget(FrmValueLabel,3,1);
  mainLayout->addWidget(geoLabel,4,0);
  mainLayout->addWidget(geoValueLabel,4,1);
  mainLayout->addWidget(widthLabel,5,0);
  mainLayout->addWidget(widthValueLabel,5,1);
  mainLayout->addWidget(heightLabel,6,0);
  mainLayout->addWidget(heightValueLabel,6,1);
  mainLayout->addWidget(rectLabel,7,0);
  mainLayout->addWidget(rectValueLabel,7,1);
  mainLayout->addWidget(sizeLabel,8,0);
  mainLayout->addWidget(sizeValueLabel,8,1);

  updateLabel();

}

//更新坐标
void Geometry::updateLabel()
{
  QString xStr;   //获得x（）函数的结果并显示
  xValueLabel->setText(xStr.setNum(x()));

  QString yStr;   //获得y()函数的结果并显示
  yValueLabel->setText(yStr.setNum(y()));

  QString frameStr;   //获得frameGeometry函数的结果并显示
  QString tempStr1, tempStr2, tempStr3, tempStr4;
  frameStr = tempStr1.setNum(frameGeometry().x()) + ", " + tempStr2.setNum(frameGeometry().y()) + ", " +
                      tempStr3.setNum(frameGeometry().width()) + ", " + tempStr4.setNum(frameGeometry().height());
  FrmValueLabel->setText(frameStr);

  QString positionStr;    //获得pos函数的结果并显示
  QString tempStr11, tempStr12;
  positionStr = tempStr11.setNum(pos().x()) + ", " + tempStr12.setNum(pos().y());
  posValueLabel->setText(positionStr);

  QString geoStr;   //获得geometry()函数的结果并显示
  QString tempStr21, tempStr22, tempStr23, tempStr24;
  geoStr = tempStr21.setNum(geometry().x()) + ", " + tempStr22.setNum(geometry().y()) + ", " +
                  tempStr23.setNum(geometry().width()) + ", " + tempStr24.setNum(geometry().height());
  geoValueLabel->setText(geoStr);

  QString wStr, hStr;   //获得width， height函数的结果并显示
  widthValueLabel->setText(wStr.setNum(width()));
  heightValueLabel->setText(hStr.setNum(height()));

  QString rectStr;    //获得rect函数的结果并显示
  QString tempStr31, tempStr32, tempStr33, tempStr34;
  rectStr = tempStr31.setNum(rect().x()) + ", " + tempStr32.setNum(rect().y()) + ", " +
                  tempStr33.setNum(rect().width()) + ", " + tempStr34.setNum(rect().height());
  rectValueLabel->setText(rectStr);

  QString sizeStr;    //获得size函数的结果并显示
  QString tempStr41, tempStr42;
  sizeStr = tempStr41.setNum(size().width()) + ", " + tempStr42.setNum(size().height());
  sizeValueLabel->setText(sizeStr);

}

//重新定义移动对话框事件
void Geometry::moveEvent(QMoveEvent *)
{
  updateLabel();
}

void Geometry::resizeEvent(QResizeEvent *)
{
  updateLabel();
}

Geometry::~Geometry()
{

}

main.cpp

#include "geometry.h"
#include <QApplication>

int main(int argc, char *argv[])
{
  QApplication a(argc, argv);
  Geometry w;
  w.show();

  return a.exec();
}

运行结果

好吧，我发现照片超过1M就无法上传了，666666，我记得好像是2M的，怪我太天真？？？