OpenCVTest

#ifndef WIDGET_H#define WIDGET_H#include <QWidget>#include <QImage>#include <QLabel>QT_BEGIN_NAMESPACEnamespace Ui {class Widget;}QT_END_NAMESPACEclass Widget : public QWidget{    Q_OBJECTpublic:    Widget(QWidget *parent = nullptr);    ~Widget();private:    Ui::Widget *ui;    QLabel *imageLabel;    QImage image;};#endif // WIDGET_H

#include "widget.h"#include "ui_widget.h"#include <opencv2/opencv.hpp>#include <QVBoxLayout>Widget::Widget(QWidget *parent)    : QWidget(parent)    , ui(new Ui::Widget){    ui->setupUi(this);    imageLabel = new QLabel(this);    imageLabel->setAlignment(Qt::AlignCenter);    QVBoxLayout *layout = new QVBoxLayout(this);    layout->addWidget(imageLabel);    setLayout(layout);    cv::Mat mat(300, 500, CV_8UC3, cv::Scalar(50, 100, 200));    cv::putText(mat, "WildPointer", cv::Point(20, 160), cv::FONT_HERSHEY_SIMPLEX, 1.2, cv::Scalar(255, 255, 255), 2);    cv::Mat rgb;    cv::cvtColor(mat, rgb, cv::COLOR_BGR2RGB);    image = QImage(rgb.data, rgb.cols, rgb.rows, rgb.step, QImage::Format_RGB888).copy();    imageLabel->setPixmap(QPixmap::fromImage(image));}Widget::~Widget(){    delete ui;}

#include "widget.h"#include <QApplication>int main(int argc, char *argv[]){    QApplication a(argc, argv);    Widget w;    w.show();    return a.exec();}

QT       += core guigreaterThan(QT_MAJOR_VERSION, 4): QT += widgetsCONFIG += c++17# You can make your code fail to compile if it uses deprecated APIs.# In order to do so, uncomment the following line.#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0SOURCES += \    main.cpp \    widget.cppHEADERS += \    widget.hFORMS += \    widget.ui# Default rules for deployment.qnx: target.path = /tmp/$${TARGET}/binelse: unix:!android: target.path = /opt/$${TARGET}/bin!isEmpty(target.path): INSTALLS += targetOPENCV_INC = E:/SummaryLib/OpenCVBuild/install/includeOPENCV_BIN = E:/SummaryLib/OpenCVBuild/install/x64/vc17/binOPENCV_LIBDIR = E:/SummaryLib/OpenCVBuild/install/x64/vc17/lib!exists($$OPENCV_INC) {    OPENCV_INC = E:/SummaryLib/OpenCV4.12.0_MSVC_Win/opencv/build/include    OPENCV_BIN = E:/SummaryLib/OpenCV4.12.0_MSVC_Win/opencv/build/x64/vc16/bin    OPENCV_LIBDIR = E:/SummaryLib/OpenCV4.12.0_MSVC_Win/opencv/build/x64/vc16/lib}INCLUDEPATH += $$OPENCV_INCwin32-msvc:LIBS += -L$$OPENCV_LIBDIRwin32-msvc:CONFIG(release, debug|release): LIBS += -lopencv_world4120win32-msvc:CONFIG(debug, debug|release): LIBS += -lopencv_world4120dwin32-msvc:CONFIG(release, debug|release): QMAKE_POST_LINK += $$quote(cmd /c if exist "$$OPENCV_BIN\opencv_world4120.dll" copy /Y "$$OPENCV_BIN\opencv_world4120.dll" "$$OUT_PWD\\")win32-msvc:CONFIG(debug, debug|release): QMAKE_POST_LINK += $$quote(cmd /c if exist "$$OPENCV_BIN\opencv_world4120d.dll" copy /Y "$$OPENCV_BIN\opencv_world4120d.dll" "$$OUT_PWD\\")