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Capture Webm Video From Entire Screen in QT - C++ (unmanaged)

Screen Capturing SDK sample in C++ (unmanaged) demonstrating ‘Capture Webm Video From Entire Screen in QT’

main.cpp
#include "widget.h"
#include <QApplication>

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    Widget w;
   // w.show(); Decomment if you need custom the GUI

    return a.exec();
}

widget.cpp
#include "widget.h"
#include "ui_widget.h"
#include <QDebug>
#include <windows.h>
#include <iostream>

using namespace std;

Widget::Widget(QWidget *parent) :
    QWidget(parent),
    ui(new Ui::Widget)
{
    ui->setupUi(this);
    //Decomment if you need to use QAxWidget
    //com = new QAxWidget;
    //Comment if you need QAxWidget
    com = new QAxObject;
    com->setControl("BytescoutScreenCapturing.Capturer");
    QString error = com->property("LastError").toString();
    if (error.compare("No errors.")!=0) // or empty string
    {
        cout <<"Screen Capturer is not installed properly. " <<
               error.toStdString() << endl;
        exit(1);
    }
    com->setProperty("RegistrationName","demo");
    com->setProperty("RegistrationKey","demo");
    com->setProperty("CapturingType",3);//catScreen: Capture all screen

    /************************************************************************************
     * The code you sent me used the webcam too.
     * Decomment if you need show webcam streaming
     *************************************************************************************
     *************************************************************************************/

    //com->setProperty("CurrentWebCam",0);
    //com->setProperty("CaptureTransparentControls",true);
    // Set rectangle to show overlaying video from webcam into the rectangle 160x120 (starting with left point at 10, 10)
    //com->dynamicCall("SetWebCamVideoRectangle(int,int,int,int)",10, 10, 160, 120);
    // Enable webcam overlaying capture device
    //com->setProperty("AddWebCamVideo",true);

    //com->setProperty("OutputWidth",640);
    //com->setProperty("OutputHeight",480);
    /**************************************************************************************
    //End webcam property
    /***************************************************************************************
    */


    // Set output file name
    com->setProperty("OutputFileName", "Output.webm");
    com->dynamicCall("Run()");


//' IMPORTANT: if you want to check for some code if need to stop the recording then make sure you are 
//' using Thread.Sleep(1) inside the checking loop, so you have the loop like
//' Do 
//' Thread.Sleep(1) 
//' While StopButtonNotClicked

    error = com->property("LastError").toString();
    if (error.compare("No errors.")!=0)
    {
        cout <<"Capture failed. " <<
               error.toStdString() << endl;
        exit(1);
    }

    //Testing purposes:
    //Register for 10 seconds and after stop the process
    //You can stop the registration as you prefer: Input, keyboard and so on..

   Sleep(10000); //Usefull for testing purposes: Register for 10 seconds
   com->dynamicCall("Stop()");  //End registration
   qDebug()<<"End Registration";

}

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

widget.h
#ifndef WIDGET_H
#define WIDGET_H

#include <QWidget>
#include <QKeyEvent>
#include <QAxWidget>
#include <QAxObject>
#include <QEvent>
namespace Ui {
class Widget;
}

class Widget : public QWidget
{
    Q_OBJECT
    
public:
    explicit Widget(QWidget *parent = 0);
    ~Widget();
    
private:
    Ui::Widget *ui;
    //You can switch to QAxWidget
    //QAxWidget * com;
    QAxObject * com;
};

#endif // WIDGET_H

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