Qt实例 1_3 各类位置信息

#ifndef GEOMETRY_H

#define GEOMETRY_H

#include <QDialog>

#include <QLabel>

class Geometry : public QDialog

{

Q_OBJECT

public:

Geometry();

QLabel *label1;

QLabel *label2;

QLabel *label3;

QLabel *label4;

QLabel *label5;

QLabel *label6;

QLabel *label7;

QLabel *label8;

QLabel *label9;

QLabel *xLabel;

QLabel *yLabel;

QLabel *frameGeoLabel;

QLabel *posLabel;

QLabel *geoLabel;

QLabel *widthLabel;

QLabel *heightLabel;

QLabel *rectLabel;

QLabel *sizeLabel;

void updateLabel();

protected:

void moveEvent(QMoveEvent *);

void resizeEvent(QResizeEvent *);

};

#endif // GEOMETRY_H

#include "geometry.h"

#include <QGridLayout>

Geometry::Geometry()

{

setWindowTitle("Geometry");

label1 = new QLabel;

label1->setText("x():");

label2 = new QLabel;

label2->setText("y():");

label3 = new QLabel;

label3->setText("frameGeometry():");

label4 = new QLabel;

label4->setText("pos():");

label5 = new QLabel;

label5->setText("geometry():");

label6 = new QLabel;

label6->setText("width():");

label7 = new QLabel;

label7->setText("height():");

label8 = new QLabel;

label8->setText("rect():");

label9 = new QLabel;

label9->setText("size():");

xLabel = new QLabel;

yLabel = new QLabel;

frameGeoLabel = new QLabel;

posLabel = new QLabel;

geoLabel = new QLabel;

widthLabel = new QLabel;

heightLabel = new QLabel;

rectLabel = new QLabel;

sizeLabel = new QLabel;

QGridLayout *layout = new QGridLayout(this);

layout->setMargin(20);

layout->setSpacing(10);

int l = 0;

int c = 1;

layout->addWidget(label1,0,l);

layout->addWidget(xLabel,0,c);

layout->addWidget(label2,1,l);

layout->addWidget(yLabel,1,c);

layout->addWidget(label3,2,l);

layout->addWidget(frameGeoLabel,2,c);

layout->addWidget(label4,3,l);

layout->addWidget(posLabel,3,c);

layout->addWidget(label5,4,l);

layout->addWidget(geoLabel,4,c);

layout->addWidget(label6,5,l);

layout->addWidget(widthLabel,5,c);

layout->addWidget(label7,6,l);

layout->addWidget(heightLabel,6,c);

layout->addWidget(label8,7,l);

layout->addWidget(rectLabel,7,c);

layout->addWidget(label9,8,l);

layout->addWidget(sizeLabel,8,c);

updateLabel();

}

void Geometry::updateLabel()

{

QString temp1,temp2, temp3, temp4;

QString str_x;

xLabel->setText(str_x.setNum(x()));

QString str_y;

yLabel->setText(str_y.setNum(y()));

QString frameGeo;

frameGeo = temp1.setNum(frameGeometry().x())+","+

temp2.setNum(frameGeometry().y())+","+

temp3.setNum(frameGeometry().width())+","+

temp4.setNum(frameGeometry().height());

frameGeoLabel->setText(frameGeo);

QString position;

position = temp1.setNum(pos().x())+","+temp2.setNum(pos().y());

posLabel->setText(position);

QString geo;

geo = temp1.setNum(geometry().x())+","+

temp2.setNum(geometry().y())+","+

temp3.setNum(geometry().width())+","+

temp4.setNum(geometry().height());

geoLabel->setText(geo);

QString w;

widthLabel->setText(w.setNum(width()));

QString h;

heightLabel->setText(h.setNum(height()));

QString r;

r = temp1.setNum(rect().x())+","+temp2.setNum(rect().y())+","+

temp3.setNum(rect().width())+","+temp4.setNum(rect().height());

rectLabel->setText(r);

QString s;

s = temp1.setNum(size().width())+","+temp2.setNum(size().height());

sizeLabel->setText(s);

}

void Geometry::moveEvent(QMoveEvent *)

{

updateLabel();

}

void Geometry::resizeEvent(QResizeEvent *)

{

updateLabel();

}

#include "mainwindow.h"

#include <QApplication>

#include "geometry.h"

int main(int argc, char *argv[])

{

QApplication a(argc, argv);

Geometry  b;

b.show();

return a.exec();

}