Halcon - Qt联合Halcon编程之显示图片
01. 概述
QT与Halcon联合编程。将Halcon中代码集成到Qt程序中。
开发环境
Qt：Qt5.14.2
Halcon: Halcon 24.11
02. 编写Halcon程序
程序示例代码：
* 从本地磁盘读取一张图片
read_image (Carb, 'C:/Users/T480S/Desktop/test_Image/nene.png')
* 获取图片大小
get_image_size (Carb, Width, Height)
* 关闭当前窗口
dev_close_window ()
* 打开新窗口
dev_open_window (0, 0, Width / 2, Height / 2, 'black', WindowHandle)
* 显示图片
dev_display (Carb)
03. Halcon程序导出C++文件
3.1选择文件中导出菜单
3.2 设置导出文件和格式，然后点击导出
3.3 导出源文件程序如下
test01.cpp源码：
查看代码
///////////////////////////////////////////////////////////////////////////////
// File generated by HDevelop for HALCON/C++ Version 24.11.1.0
// Non-ASCII strings in this file are encoded in local-8-bit encoding (cp936).
// Ensure that the interface encoding is set to locale encoding by calling
// SetHcppInterfaceStringEncodingIsUtf8(false) at the beginning of the program.
//
// Please note that non-ASCII characters in string constants are exported
// as octal codes in order to guarantee that the strings are correctly
// created on all systems, independent on any compiler settings.
//
// Source files with different encoding should not be mixed in one project.
///////////////////////////////////////////////////////////////////////////////
#include "HalconCpp.h"
#include "HDevThread.h"
using namespace HalconCpp;
#ifndef NO_EXPORT_MAIN
// Main procedure
void action()
{
// Local iconic variables
HObject ho_Carb;
// Local control variables
HTuple hv_Width, hv_Height, hv_WindowHandle;
//从本地磁盘读取一张图片
ReadImage(&ho_Carb, "C:/Users/T480S/Desktop/test_Image/nene.png");
//获取图片大小
GetImageSize(ho_Carb, &hv_Width, &hv_Height);
//关闭当前窗口
if (HDevWindowStack::IsOpen())
CloseWindow(HDevWindowStack::Pop());
//打开新窗口
SetWindowAttr("background_color","black");
OpenWindow(0,0,hv_Width/2,hv_Height/2,0,"visible","",&hv_WindowHandle);
HDevWindowStack::Push(hv_WindowHandle);
//显示图片
if (HDevWindowStack::IsOpen())
DispObj(ho_Carb, HDevWindowStack::GetActive());
}
#ifndef NO_EXPORT_APP_MAIN
int main(int argc, char *argv[])
{
int ret = 0;
try
{
#if defined(_WIN32)
SetSystem("use_window_thread", "true");
#endif
// file was stored with local-8-bit encoding
// -> set the interface encoding accordingly
SetHcppInterfaceStringEncodingIsUtf8(false);
// Default settings used in HDevelop (can be omitted)
SetSystem("width", 512);
SetSystem("height", 512);
action();
}
catch (HException &exception)
{
fprintf(stderr," Error #%u in %s: %s\n", exception.ErrorCode(),
exception.ProcName().TextA(),
exception.ErrorMessage().TextA());
ret = 1;
}
#if defined(_WIN32)
// On Windows socket communication is no longer possible after returning
// from main, so HALCON cannot return floating licenses automatically.
try
{
SetSystem("return_license", "true");
}
catch (...)
{
// Ignore any errors that might occur when returning the license.
}
#endif
return ret;
}
#endif
#endif
04. 创建Qt图形界面项目
4.1 简单的GUI设计如下
4.2 选择MSVC2017编译器或者其它版本的编译器
集成halcon编译需要用msvc，如果用minGW,会出错，等有时间在去研究minGW编译情形。
05. Qt集成Halcon程序
5.1 在pro项目配置文件中添加一下Halcon的头文件以及库目录
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
macx {
QMAKE_CXXFLAGS += -F/Library/Frameworks
QMAKE_LFLAGS += -F/Library/Frameworks
LIBS += -framework HALCONCpp
}
else
{
#defines
win32:DEFINES += WIN32
#includes
INCLUDEPATH += "$$(HALCONROOT)/include"
INCLUDEPATH += "$$(HALCONROOT)/include/halconcpp"
#libs
QMAKE_LIBDIR += "$$(HALCONROOT)/lib/$$(HALCONARCH)"
unix:LIBS += -lhalconcpp -lhalcon -lXext -lX11 -ldl -lpthread
win32:LIBS += "$$(HALCONROOT)/lib/$$(HALCONARCH)/halconcpp.lib" \
"$$(HALCONROOT)/lib/$$(HALCONARCH)/halcon.lib"
}
SOURCES += \
main.cpp \
mainwindow.cpp
HEADERS += \
mainwindow.h
FORMS += \
mainwindow.ui
# Default rules for deployment.
qnx: target.path = /tmp/$${TARGET}/bin
else: unix:!android: target.path = /opt/$${TARGET}/bin
!isEmpty(target.path): INSTALLS += target
5.2 在mainwindow.h文件中添加Halcon相关头文件
mainwindow.h代码：
#ifndef MAINWINDOW_H
#define MAINWINDOW_H
#include <QMainWindow>
#include "HalconCpp.h"
#include "HDevThread.h"
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();
private:
Ui::MainWindow *ui;
// Local iconic variables
HObject ho_Carb;
// Local control variables
HTuple hv_Width, hv_Height, hv_WindowHandle;
};
#endif // MAINWINDOW_H
5.3 在MainWindow添加halcon相关的变量
mainwindow.h代码：
#include "mainwindow.h"
#include "ui_mainwindow.h"
MainWindow::MainWindow(QWidget *parent)
: QMainWindow(parent)
, ui(new Ui::MainWindow)
{
ui->setupUi(this);
}
MainWindow::~MainWindow()
{
delete ui;
}
//采集图像按钮槽函数
void MainWindow::on_pushButton_clicked()
{
//从本地磁盘读取一张图片
ReadImage(&ho_Carb, "C:/Users/T480S/Desktop/test_Image/nene.png");
//获取图片大小
GetImageSize(ho_Carb, &hv_Width, &hv_Height);
//关闭当前窗口
if (HDevWindowStack::IsOpen())
CloseWindow(HDevWindowStack::Pop());
//打开新窗口
SetWindowAttr("background_color","black");
//Halcon图像窗口与QT窗口是独立的窗口
//OpenWindow(0,0,hv_Width/2,hv_Height/2,0,"visible","",&hv_WindowHandle);
//获取Label空间的WinId
Hlong winId = (Hlong)ui->label->winId();
//将Label和Halcon窗口进行绑定
OpenWindow(0,0,hv_Width/2,hv_Height/2,winId,"visible","",&hv_WindowHandle);
HDevWindowStack::Push(hv_WindowHandle);
//显示图片
if (HDevWindowStack::IsOpen())
{
DispObj(ho_Carb, HDevWindowStack::GetActive());
}
}
5.4 编译运行，执行结果
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