很简单的一个图片浏览器，可以从打开按钮打开图片文件。上一张和下一张的功能还没实现。程序代码如下
头文件:picbrowser.h
/**//*
* 文件：picbrowser.h* 作者：yangdk* Email:jidacun@163.com* 主页：http://blog.csdn.net/yang_dk
*/
#ifndef _PICBROWSER_H_#define _PICBROWSER_H_#include <QDialog>class QPushButton;class QPixmap;class QFileDialog;class QHBoxLayout; class QVBoxLayout;class QLabel; //放图片class PicBrowser:public QDialog...{ Q_OBJECTpublic: PicBrowser(QWidget *parent=0);private: QPushButton *openButton,*closeButton,*prevButton,*nextButton; QPixmap *pixmap; QHBoxLayout *bottom; QVBoxLayout *mainLayout; QLabel *picLabel; public slots: void openPic(); void prevPic(); void nextPic(); void exitapp();};#endifpicbrowser.cpp
/**//** 文件：picbrowser.cpp* 作者：yangdk* Email:jidacun@163.com* 主页：http://blog.csdn.net/yang_dk*/#include "picBrowser.h"#include <QtGui>#include <iostream.h>PicBrowser::PicBrowser(QWidget *parent):QDialog(parent)...{ openButton = new QPushButton(tr("open")); closeButton= new QPushButton(tr("close")); prevButton = new QPushButton(tr("prev")); nextButton = new QPushButton(tr("next")); connect(openButton,SIGNAL(clicked()),this,SLOT(openPic())); connect(closeButton,SIGNAL(clicked()),this,SLOT(exit(0))); connect(closeButton,SIGNAL(clicked()),this,SLOT(exitapp())); connect(prevButton,SIGNAL(clicked()),this,SLOT(prevPic())); connect(nextButton,SIGNAL(clicked()),this,SLOT(nextPic())); pixmap = new QPixmap("1.jpg"); //默认打开当前目录下的1.jpg文件 picLabel=new QLabel; //使用一个Label来显示图片，将图片作为Label的Icon而已，呵呵 picLabel->setPixmap(*pixmap); //pixmap->setRange //布局 bottom = new QHBoxLayout; bottom->addWidget(openButton); bottom->addWidget(prevButton); bottom->addWidget(nextButton); bottom->addWidget(closeButton); mainLayout = new QVBoxLayout; mainLayout->addWidget(picLabel); mainLayout->addLayout(bottom); setLayout(mainLayout);}void PicBrowser::openPic()...{ //打开一张图片 QString filename=QFileDialog::getOpenFileName(this,"open a picture","/",tr("Images(*.bmp *.jpg *.png)")); pixmap->load(filename); picLabel->setPixmap(*pixmap);}void PicBrowser::prevPic()...{ QMessageBox::information(this,"xiaoxi","not implement,please choose open",QMessageBox::Close);}void PicBrowser::nextPic()...{ QMessageBox::information(this,"xiaoxi","not implement,please choose open",QMessageBox::Close);}void PicBrowser::exitapp()...{ exit(0);}main.cpp
#include <QApplication>#include "picbrowser.h"int main(int argc,char *argv[])...{ QApplication app(argc,argv); PicBrowser picBS; return picBS.exec();}