Record Screen Video With Webcamera Overlay - C++ (managed)
Screen Capturing SDK sample in C++ (managed) demonstrating ‘Record Screen Video With Webcamera Overlay’
AssemblyInfo.cpp
#include "stdafx.h"
using namespace System;
using namespace System::Reflection;
using namespace System::Runtime::CompilerServices;
using namespace System::Runtime::InteropServices;
using namespace System::Security::Permissions;
//
// General Information about an assembly is controlled through the following
// set of attributes. Change these attribute values to modify the information
// associated with an assembly.
//
[assembly:AssemblyTitleAttribute("CaptureWithWebcameraOverlay")];
[assembly:AssemblyDescriptionAttribute("")];
[assembly:AssemblyConfigurationAttribute("")];
[assembly:AssemblyCompanyAttribute("")];
[assembly:AssemblyProductAttribute("CaptureWithWebcameraOverlay")];
[assembly:AssemblyCopyrightAttribute("Copyright (c)  2011")];
[assembly:AssemblyTrademarkAttribute("")];
[assembly:AssemblyCultureAttribute("")];
//
// Version information for an assembly consists of the following four values:
//
//      Major Version
//      Minor Version
//      Build Number
//      Revision
//
// You can specify all the value or you can default the Revision and Build Numbers
// by using the '*' as shown below:
[assembly:AssemblyVersionAttribute("1.0.*")];
[assembly:ComVisible(false)];
[assembly:CLSCompliantAttribute(true)];
[assembly:SecurityPermission(SecurityAction::RequestMinimum, UnmanagedCode = true)];
CaptureWithWebcameraOverlay.cpp
// CaptureWithWebcameraOverlay.cpp : main project file.
#include "stdafx.h"
using namespace System;
using namespace System::Threading;
using namespace System::Diagnostics;
using namespace BytescoutScreenCapturingLib;
int main(array<System::String ^> ^args)
{
	// Create Capturer instance
    Capturer ^capturer = gcnew Capturer();
    
	capturer->RegistrationName = "demo";
	capturer->RegistrationKey = "demo";
	// Set capturing type
	capturer->CapturingType = CaptureAreaType::catScreen;
	// Set webcamera device by name (CurrentWebCamName property)
	// or set it by index using CurrentWebCam property
	capturer->CurrentWebCam = 0;
	// Set rectangle to show overlaying video from webcam into the rectangle 160x120 (starting with left point at 10, 10)
    capturer->SetWebCamVideoRectangle(10, 10, 160, 120);
	// Enable webcam overlaying capture device
	capturer->AddWebCamVideo = true;
	// Set output video width and height
	capturer->OutputWidth = 640;
	capturer->OutputHeight = 480;
	    // WMV and WEBM output use WMVVideoBitrate property to control output video bitrate
   	    // so try to increase it by x2 or x3 times if you think the output video are you are getting is laggy
	    // capturer->put_WMVVideoBitrate(capturer->WMVVideoBitrate * 2);
        // uncomment to enable recording of semitransparent or layered windows (Warning: may cause mouse cursor flickering)
        // capturer->CaptureTransparentControls = true;
	// Set output file name
	capturer->OutputFileName = "Output.wmv";
	// Start capturing
	capturer->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);
	
	Console::WriteLine("Capture the desktop for 5s...");
	// Wait for 5 seconds
	Thread::Sleep(5000);
	// Stop capturing
	capturer->Stop();
    // Release resources
    System::Runtime::InteropServices::Marshal::ReleaseComObject(capturer);
    //capturer = NULL;
	
	Console::WriteLine("Done.");
	
	// Open the capture video in default associated application
	Process::Start("Output.wmv");
	return 0;
}
resource.h
//{{NO_DEPENDENCIES}}
// Microsoft Visual C++ generated include file.
// Used by app.rc
stdafx.cpp
// stdafx.cpp : source file that includes just the standard includes
// CaptureWithWebcameraOverlay.pch will be the pre-compiled header
// stdafx.obj will contain the pre-compiled type information
#include "stdafx.h"
stdafx.h
// stdafx.h : include file for standard system include files,
// or project specific include files that are used frequently, but
// are changed infrequently
//
#pragma once
// TODO: reference additional headers your program requires here