QT与Halcon联合编程调用相机实时采集【采用定时器Qtimer】

详情见我另一篇博客配置方法：

QT与Halcon联合编程环境配置【注意事项以及遇到的各种坑】_NCUTer的博客-CSDN博客_qt联合halcon

配置好之后程序构建运行一次，在程序根目录下生成如下文件：

 mainwindow.h 代码如下：

#ifndef MAINWINDOW_H
#define MAINWINDOW_H
#include
#include
#include
#include 
#include
using namespace HalconCpp;

QT_BEGIN_NAMESPACE
namespace Ui { class MainWindow; }
QT_END_NAMESPACE

class MainWindow : public QMainWindow
{
    Q_OBJECT

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

private slots:
    void on_pushButton_clicked();  //开启相机采集

    void on_pushButton_2_clicked();  //关闭相机

    void on_pushButton_3_clicked();  //退出程序

    void camera();  //相机抓图函数

private:
    Ui::MainWindow *ui;

    // Local iconic variables
    HObject  ho_Image;

    // Local control variables
    HTuple  hv_WindowHandle, hv_AcqHandle, hv_Width;
    HTuple  hv_Height;
    //定义相机采图的定时器
    QTimer *timer;


};
#endif // MAINWINDOW_H

mainwindow.cpp 代码如下：

#include "mainwindow.h"
#include "ui_mainwindow.h"
#include

MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent)
    , ui(new Ui::MainWindow)
{
    ui->setupUi(this);
    timer = new QTimer(this);  //定义定时器
    connect (timer,&QTimer::timeout,this,[=]()
    {
        camera();
    });
}

MainWindow::~MainWindow()
{
    delete ui;
}

//打开相机开启采图
void MainWindow::on_pushButton_clicked()
{
    if (HDevWindowStack::IsOpen())
      CloseWindow(HDevWindowStack::Pop());
    SetWindowAttr("background_color","black");
    OpenWindow(0,0,ui->label_singleMain->width (),ui->label_singleMain->height (),(Hlong)ui->label_singleMain->winId(),"visible","",&hv_WindowHandle);
    HDevWindowStack::Push(hv_WindowHandle);
    OpenFramegrabber("GigEVision2", 0, 0, 0, 0, 0, 0, "progressive", -1, "default",
        -1, "false", "default", "00305330d6a1_Basler_acA244020gm", 0, -1, &hv_AcqHandle);
    timer->start(20);
}


//关闭相机
void MainWindow::on_pushButton_2_clicked()
{
    timer->stop ();
    CloseFramegrabber(hv_AcqHandle);
    QMessageBox::information (this,"Tip Message","相关已关闭成功！");
}
//退出程序
void MainWindow::on_pushButton_3_clicked()
{
    exit (0);
}
//相机定时器抓图配合事件
void MainWindow::camera()
{
    GrabImage(&ho_Image, hv_AcqHandle);
    GetImageSize(ho_Image, &hv_Width, &hv_Height);
    if (HDevWindowStack::IsOpen())
      SetPart(HDevWindowStack::GetActive(),0, 0, hv_Height-1, hv_Width-1);
    if (HDevWindowStack::IsOpen())
      DispObj(ho_Image, HDevWindowStack::GetActive());
}

===================尤其注意定时器的合理运用问题：

    QTimer *timer = new QTimer(this);  //定义定时器
    connect (timer,&QTimer::timeout,this,[=]()
    {
        camera();
    });


//相机定时器抓图配合事件
void MainWindow::camera()
{
    GrabImage(&ho_Image, hv_AcqHandle);
    GetImageSize(ho_Image, &hv_Width, &hv_Height);
    if (HDevWindowStack::IsOpen())
      SetPart(HDevWindowStack::GetActive(),0, 0, hv_Height-1, hv_Width-1);
    if (HDevWindowStack::IsOpen())
      DispObj(ho_Image, HDevWindowStack::GetActive());
}

//打开相机开启采图
void MainWindow::on_pushButton_clicked()
{
    if (HDevWindowStack::IsOpen())
      CloseWindow(HDevWindowStack::Pop());
    SetWindowAttr("background_color","black");
    OpenWindow(0,0,ui->label_singleMain->width (),ui->label_singleMain->height (),(Hlong)ui->label_singleMain->winId(),"visible","",&hv_WindowHandle);
    HDevWindowStack::Push(hv_WindowHandle);
    OpenFramegrabber("GigEVision2", 0, 0, 0, 0, 0, 0, "progressive", -1, "default",
        -1, "false", "default", "00305330d6a1_Basler_acA244020gm", 0, -1, &hv_AcqHandle);
    timer->start(20);
}


//关闭相机
void MainWindow::on_pushButton_2_clicked()
{
    timer->stop ();
    CloseFramegrabber(hv_AcqHandle);
    QMessageBox::information (this,"Tip Message","相关已关闭成功！");
}

至此程序即可成功运行调用相机进行采图了

我的配置完毕的QT源程序已发布至资源，如需要可自行查看参考【有疑问可评论在此大家一起看看哪里出了问题】：

QT与Halcon联合编程调用相机实时采图--QT_Halcon_CameraGrab.zip-QT文档类资源-CSDN下载