C++ Qt之halcon读取像素项目过程详解

项目环境：win10，qt5.14，halcon20

功能：1.读取指定图像2.读取指定目录下的图像

项目配置文件

QT       += core gui

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

CONFIG += c++11

# The following define makes your compiler emit warnings if you use
# any Qt feature that has been marked deprecated (the exact warnings
# depend on your compiler). Please consult the documentation of the
# deprecated API in order to know how to port your code away from it.
DEFINES += QT_DEPRECATED_WARNINGS

# You can also make your code fail to compile if it uses deprecated APIs.
# In order to do so, uncomment the following line.
# You can also select to disable deprecated APIs only up to a certain version of Qt.
#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0

SOURCES += \
  main.cpp \
  widget.cpp

HEADERS += \
  widget.h

# Default rules for deployment.
qnx: target.path = /tmp/$${TARGET}/bin
else: unix:!android: target.path = /opt/$${TARGET}/bin
!isEmpty(target.path): INSTALLS += target

#win32和unix下的include实际上是一样的
win32:{
 #halcon配置代码，已经将include、lib拷贝到项目之下
 LIBS += -L$$PWD/halcon/win/lib/x64-win64/ -lhalcon
 LIBS += -L$$PWD/halcon/win/lib/x64-win64/ -lhalconc
 LIBS += -L$$PWD/halcon/win/lib/x64-win64/ -lhalconcpp
 LIBS += -L$$PWD/halcon/win/lib/x64-win64/ -lhalconcppxl
 LIBS += -L$$PWD/halcon/win/lib/x64-win64/ -lhalconcxl
 LIBS += -L$$PWD/halcon/win/lib/x64-win64/ -lhalconxl
 LIBS += -L$$PWD/halcon/win/lib/x64-win64/ -lhdevenginecpp
 LIBS += -L$$PWD/halcon/win/lib/x64-win64/ -lhdevenginecppxl
 LIBS += -L$$PWD/halcon/win/lib/x64-win64/ -llibiomp5md

 #INCLUDEPATH += $$PWD/halcon/win/include
 #DEPENDPATH += $$PWD/halcon/win/include

 INCLUDEPATH += $$PWD/halcon/linux/include
 DEPENDPATH += $$PWD/halcon/linux/include
}


unix:{
 LIBS += -L$$PWD/halcon/linux/lib/x64-linux -lhalcon
 LIBS += -L$$PWD/halcon/linux/lib/x64-linux -lhalconc
 LIBS += -L$$PWD/halcon/linux/lib/x64-linux -lhalconcpp
 LIBS += -L$$PWD/halcon/linux/lib/x64-linux -lhalconcppxl
 LIBS += -L$$PWD/halcon/linux/lib/x64-linux/ -lhalconcxl
 LIBS += -L$$PWD/halcon/linux/lib/x64-linux -lhalconxl
 LIBS += -L$$PWD/halcon/linux/lib/x64-linux -lhdevenginecpp
 LIBS += -L$$PWD/halcon/linux/lib/x64-linux -lhdevenginecppxl

 INCLUDEPATH += $$PWD/halcon/linux/include
 DEPENDPATH += $$PWD/halcon/linux/include
}

头文件

#ifndef WIDGET_H
#define WIDGET_H

#include <QWidget>
#include <QLabel>
#include <QPushButton>
#include <QGroupBox>
#include <QRadioButton>
#include <QStackedWidget>
#include <QLineEdit>
#include <QStyle>
#include <QDebug>
#include <QStandardItemModel>
#include <QTabWidget>
#include <QTableWidget>
#include <QHeaderView>
#include <QTableWidgetItem>
#include <QFileDialog>

#include "halconcpp/HalconCpp.h"
#include "Halcon.h"

using namespace HalconCpp;


#pragma execution_character_set("utf-8") //支持中文

class Widget : public QWidget
{
  Q_OBJECT

public:
  Widget(QWidget *parent = nullptr);
  ~Widget();

private:
  QLabel *image_label;

  HTuple  hv_WindowHandle;
  //HTuple  hv_AcqHandle;
  HObject  ho_Image;
  HTuple  hv_Width, hv_Height;
  //Hlong windID;
  Hlong  MainWndID;

  QGroupBox *groupbox1;

  QRadioButton *radio1;
  QRadioButton *radio2;

  QStackedWidget *stackedwidget;
  QWidget *page1;
  QWidget *page2;

  QLineEdit *ledit1;
  QPushButton *btn1;

  QLineEdit *ledit2;
  QPushButton *btn2;
  QTableWidget *tableWidget;
  QTableWidgetItem *item0;
  QString file_path;
  QStringList filenameList;
  //QStringList fullfilename;

  QPushButton *btn3;



  void create_widget();

  void filelist_refresh();
  QStringList readfilelist;

  QString file_name1;
  QString file_name2;

  int imageNo=0;




  /*
  enum CellType{ct_isUsed,ct_rowNo};
  enum FieldColNum{col_isUsed,col_rowNo};
  QLabel *labCellIndex;
  QLabel *labCellType;
  QLabel *labID;
  void createItemsARow(bool isUsed,int rowNo,QString FileName);
  */


private slots:
  void on_radioButton1_clicked();
  void on_radioButton2_clicked();

  void on_btn1_clicked();
  void on_btn2_clicked();
  void on_btn3_clicked();
  //void on_item_clicked(QTableWidgetItem * item);
  void on_checkchangestate(int, int);
  //void slotHeaderClicked(int);



};
#endif // WIDGET_H

c++文件

#include "widget.h"

Widget::Widget(QWidget *parent)
  : QWidget(parent)
{
  create_widget();

  connect(radio1,SIGNAL(clicked(bool)),this,SLOT(on_radioButton1_clicked()));
  connect(radio2,SIGNAL(clicked(bool)),this,SLOT(on_radioButton2_clicked()));

  connect(btn1,SIGNAL(clicked(bool)),this,SLOT(on_btn1_clicked()));
  connect(btn2,SIGNAL(clicked(bool)),this,SLOT(on_btn2_clicked()));
  connect(btn3,SIGNAL(clicked(bool)),this,SLOT(on_btn3_clicked()));

  connect(tableWidget, SIGNAL(cellClicked(int, int)), this, SLOT(on_checkchangestate(int, int)));
  //connect(tableWidget->horizontalHeader(), SIGNAL(sectionClicked(int)), this, SLOT(slotHeaderClicked(int)));



}

Widget::~Widget()
{
}

void Widget::create_widget()
{
  this->setFixedSize(916,547);
  this->setWindowTitle("图像读取");

  image_label =new QLabel(this);
  image_label->setGeometry(290,20,611,461);
  MainWndID = (Hlong)this->image_label->winId();
  SetWindowAttr("background_color","gray");//设置背景为灰色
  OpenWindow(0, 0, image_label->width(), image_label->height(), MainWndID,
             "visible", "", &hv_WindowHandle);
  HDevWindowStack::Push(hv_WindowHandle);

  groupbox1 = new QGroupBox(this);
  groupbox1->setGeometry(10,20,261,121);
  QLabel *label1 =new QLabel(this->groupbox1);
  label1->setText("采集模式");
  label1->setGeometry(0,0,261,21);

  radio1 = new QRadioButton(tr("指定图像"),this->groupbox1);
  radio2 = new QRadioButton(tr("文件目录"),this->groupbox1);
  radio1->setGeometry(50,40,100,20);
  radio2->setGeometry(50,70,100,20);
  radio1->setChecked(true);


  stackedwidget = new QStackedWidget(this);
  stackedwidget->setGeometry(20,160,251,301);

  page1 = new QWidget();
  QLabel *label2 =new QLabel(page1);
  label2->setGeometry(0,0,100,20);
  label2->setText("指定图片");
  ledit1 = new QLineEdit(page1);
  //ledit1->setGeometry(30,130,150,30);
  ledit1->setGeometry(0,130,200,30);
  ledit1->setReadOnly(true);
  btn1 = new QPushButton(page1);
  btn1->setGeometry(200,130,30,30);
  btn1->setIcon(style()->standardIcon(QStyle::SP_FileDialogContentsView));

  page2 = new QWidget();
  QLabel *label3 =new QLabel(page2);
  label3->setGeometry(0,0,100,20);
  label3->setText("文件目录");


  ledit2 = new QLineEdit(page2);
  ledit2->setGeometry(30,30,150,30);
  btn2 = new QPushButton(page2);
  btn2->setGeometry(180,30,30,30);
  btn2->setIcon(style()->standardIcon(QStyle::SP_FileDialogContentsView));

  //QTableWidget *tableWidget = new QTableWidget(10,3,page2);
  tableWidget = new QTableWidget(page2);
  //QTableWidget *tableWidget = new QTableWidget(page2);
  tableWidget->setRowCount(0);
  tableWidget->setColumnCount(3);
  //page2->addWidget();
  tableWidget->setGeometry(0,70,251,230);
  //tableWidget->resizeColumnsToContents();
  //tableWidget->resizeRowsToContents();
  //tableWidget->setColumnWidth(3,200);
  tableWidget->setColumnWidth(0,50);
  tableWidget->setColumnWidth(1,50);
  //tableWidget->setColumnWidth(2,QHeaderView::Stretch);
  tableWidget->setColumnWidth(2,120);
  //tableWidget->setRowHeight(3,60);
  tableWidget->verticalHeader()->setVisible(false); //隐藏列表头
  //tableWidget->horizontalHeader()->setVisible(false); //隐藏行表头

  tableWidget->show();
  QStringList headerText;
  headerText<<"选取"<<"索引"<<"文件名";
  tableWidget->setHorizontalHeaderLabels(headerText);
  tableWidget->setEditTriggers(QAbstractItemView::NoEditTriggers);
  tableWidget->horizontalHeader()->setDisabled(true);//禁止用户拖动改变列宽
  tableWidget->verticalHeader()->setDisabled(true);//设置行不能拖动
  //tableWidget->setEnabled(false);

  stackedwidget->addWidget(page1);
  stackedwidget->addWidget(page2);

  btn3 = new QPushButton(this);
  btn3->setGeometry(540,505,91,31);
  btn3->setText("执行");


}

void Widget::on_radioButton1_clicked()
{
  qDebug()<<"1";
  stackedwidget->setCurrentIndex(0);
}

void Widget::on_radioButton2_clicked()
{
  qDebug()<<"2";
  stackedwidget->setCurrentIndex(1);
}

void Widget::on_btn1_clicked()
{
  qDebug()<<"btn1";
  qDebug() << "按下了1号按钮，读取图片";
  file_name1 = QFileDialog::getOpenFileName(this,tr("open  file"),".",tr("Video Files(*.bmp *.jpg *.pbm *.pgm *.png *.ppm *.xbm *.xpm *.jpeg)"));

  ledit1->setText(file_name1);


}

void Widget::on_btn2_clicked()
{
  //imageNo = 0;
  qDebug()<<"btn2";
  qDebug() << "按下了2号按钮，读取图片";
  try
  {

      file_path = QFileDialog::getExistingDirectory(this,tr("Open Directory"),"./");
      qDebug() << file_path;
      ledit2->setText(file_path);

      QDir dir(file_path);

      //  cout<<"bian li kai shi "<<endl;
      if(!dir.exists()){
          qDebug()<<"文件路径错误";
          //return false;
      }
      dir.setFilter(QDir::Files | QDir::NoSymLinks);
      QStringList filters;
      filters <<"*.bmp"<<"*.jpg"<<"*.pbm"<<"*.pgm"<<"*.png"<<"*.ppm"<<"*.xbm"<<"*.xpm"<<"*.jpeg";
      dir.setNameFilters(filters);

      filenameList = dir.entryList();
      qDebug()<<filenameList;


      ///
      tableWidget->clearContents();
      tableWidget->setRowCount(filenameList.count());

      for(int i=0;i<filenameList.count();i++)
      {
          qDebug()<<filenameList[i];
          //QTableWidgetItem *item = new QTableWidgetItem();
          item0 = new QTableWidgetItem();
          item0->setCheckState(Qt::Checked);

          tableWidget->setItem(i, 0, item0);
          QTableWidgetItem *item1 = new QTableWidgetItem(QString::number(i));
          tableWidget->setItem(i, 1, item1);
          QTableWidgetItem *item2 = new QTableWidgetItem(filenameList[i]);
          tableWidget->setItem(i, 2, item2);

      }

      filelist_refresh();




  }
  catch (HException &HDevExpDefaultException)
  {
      HTuple  hv_Exception;
      HDevExpDefaultException.ToHTuple(&hv_Exception);
  }

}

void Widget::on_btn3_clicked(){
  qDebug() << "按下了3号按钮，读取图片";

  ClearWindow(hv_WindowHandle);
  if(radio1->isChecked())
  {
      //显示指定图片
      try
      {
          //QString file_name;
          QString image;
          if(file_name1.isNull()){
              image = "";

          }else{
              image=file_name1;
          }
          ReadImage(&ho_Image,image.toLatin1().data());
          GetImageSize(ho_Image, &hv_Width, &hv_Height);
          SetPart(hv_WindowHandle, 0, 0, hv_Height, hv_Width);
          DispObj(ho_Image, HDevWindowStack::GetActive());

      }
      catch (HException &HDevExpDefaultException)
      {
          HTuple  hv_Exception;
          HDevExpDefaultException.ToHTuple(&hv_Exception);
      }

  }else if(radio2->isChecked())
  {
      //显示文件目录下选取图像]
      if(imageNo>=readfilelist.count()){
          imageNo=0;
      }
      try
      {
          //QString file_name;
          QString image;
          if(readfilelist.isEmpty()){
              image="";
          }else{
              image = readfilelist[imageNo];
          }
          ReadImage(&ho_Image,image.toLatin1().data());
          GetImageSize(ho_Image, &hv_Width, &hv_Height);
          SetPart(hv_WindowHandle, 0, 0, hv_Height, hv_Width);
          DispObj(ho_Image, HDevWindowStack::GetActive());
          imageNo++;

      }
      catch (HException &HDevExpDefaultException)
      {
          HTuple  hv_Exception;
          HDevExpDefaultException.ToHTuple(&hv_Exception);
      }
  }





}


void Widget::on_checkchangestate(int value1, int value2){

  if(value2==0&&tableWidget->item(value1, value2)->checkState() == Qt::Checked)
  {
      qDebug()<<"选中";
  }
  else if(value2==0&&tableWidget->item(value1, value2)->checkState() == Qt::Unchecked)
  {
      qDebug()<<"未选中";
  }
  filelist_refresh();
}

void Widget::filelist_refresh(){
  imageNo = 0;
  readfilelist.clear();
  for(int i=0;i<tableWidget->rowCount();i++){
      if(tableWidget->item(i, 0)->checkState() == Qt::Checked){
          readfilelist.append(file_path+"/"+filenameList[i]);
      }
  }
  qDebug()<<readfilelist;

  //readfilelist
}

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原文链接：https://blog.csdn.net/qq_16377055/article/details/120199981