一、获取程序句柄以及类

打开Visual Studio 进行查询

二、QT调用程序

H文件

#ifndef VISUAL_H
#define VISUAL_H

#include <QWidget>
#include <QProcess>
#include<Windows.h>
#include<QWindow>

QT_BEGIN_NAMESPACE
namespace Ui { class Visual; }
QT_END_NAMESPACE

class Visual : public QWidget
{
    Q_OBJECT

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


private:
    Ui::Visual *ui;
    QProcess *process;
    QWindow * m_window;
};
#endif // VISUAL_H

CPP文件

#include "visual.h"
#include "ui_visual.h"

Visual::Visual(QWidget *parent)
    : QWidget(parent)
    , ui(new Ui::Visual)
{
    ui->setupUi(this);
    process = new QProcess(this);
    QString cmd = "C:/Users/CSJ/Desktop/CeleX5Demo_x64/CeleXDemo.exe";
    STARTUPINFO si = { sizeof(si) };
    PROCESS_INFORMATION pi;
    si.dwFlags = STARTF_USESHOWWINDOW;
    si.wShowWindow = true;
    bool bRet = CreateProcess(
                NULL,
                (LPWSTR)cmd.toStdWString().c_str(),
                NULL,
                NULL,
                FALSE,
                CREATE_NEW_CONSOLE,
                NULL,
                NULL, &si, &pi);

    Sleep(1000);
    WId wid = (WId)FindWindow(L"Qt5QWindowIcon", L"CeleXDemo");//获取窗口句柄
    m_window = QWindow::fromWinId(wid);
    m_window->setFlags(m_window->flags() | Qt::CustomizeWindowHint | Qt::WindowTitleHint); //

    QWidget *m_widget;
    m_widget = QWidget::createWindowContainer(m_window, this->ui->widget);
    m_widget->setMinimumSize(1938, 1048);
}

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

最终效果：

完成QT外部调用！！