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Capture Video From Region Around Mouse - C++ (unmanaged)

Screen Capturing SDK sample in C++ (unmanaged) demonstrating ‘Capture Video From Region Around Mouse’

CaptureRegionAroundMouse.cpp
// CaptureFromEntireScreen.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#import "BytescoutScreenCapturing.dll"

using namespace BytescoutScreenCapturingLib;
using namespace std;


void usage(ICapturer* capturer);
void setParams(int argc, _TCHAR* argv[], ICapturer* capturer);


int _tmain(int argc, _TCHAR* argv[])
{
	::CoInitialize(0);

	// Create Capturer instance

	CLSID clsid_ScreenCapturer;
	CLSIDFromProgID(OLESTR("BytescoutScreenCapturing.Capturer"), &clsid_ScreenCapturer);

	ICapturer* capturer = NULL;
	::CoCreateInstance(clsid_ScreenCapturer, NULL, CLSCTX_ALL, __uuidof(ICapturer), (LPVOID*)&capturer);

	if (!capturer)
	{
		_ftprintf(stdout, _T("Screen Capturer is not installed properly."));
		::CoUninitialize();
		return 1;
	}

	capturer->put_RegistrationName(_T("demo"));
	capturer->put_RegistrationKey(_T("demo"));

	// Set capturing type 
	capturer->put_CapturingType(catMouse);

	// Set capturing area width and height
	capturer->put_CaptureRectWidth(640);
	capturer->put_CaptureRectHeight(480);

	// Set output video width and height
	capturer->put_OutputWidth(640);
	capturer->put_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);


	// set border style
	capturer->put_CaptureAreaBorderType(cabtDashed);
    capturer->put_CaptureAreaBorderWidth(2);
	capturer->put_CaptureAreaBorderColor(RGB(255, 0, 0));

	// Set output file name
	capturer->OutputFileName = _T("Output.wmv");

        // uncomment to enable recording of semitransparent or layered windows (Warning: may cause mouse cursor flickering)
        // capturer->CaptureTransparentControls = true;


	// Start capturing
	HRESULT hr = 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

	
	if (FAILED(hr))
	{
		// Error handling
		CComBSTR s;
		capturer->get_LastError(&s);
		_ftprintf(stdout, _T("Capture failed: %s\n"), CString(s));
	}
	else
	{
		_tprintf(_T("Starting capture - Hit Enter to stop ...\n"));

		int i = 0;
		TCHAR *spin = _T("|/-\\");

		// Show some progress

		while (!_kbhit())
		{
			_tprintf(_T("\rEncoding %c"), spin[i++]);
			i %= 4;
			Sleep(50);
		}

		// Stop after key press
		capturer->Stop();

		_tprintf(_T("\nDone."));
		getchar();
	}

	// Release Capturer
	capturer->Release();
	capturer = NULL;

	::CoUninitialize();

	return 0;
}


stdafx.cpp
// stdafx.cpp : source file that includes just the standard includes
// CaptureFromEntireScreen.pch will be the pre-compiled header
// stdafx.obj will contain the pre-compiled type information

#include "stdafx.h"

// TODO: reference any additional headers you need in STDAFX.H
// and not in this file

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

#ifndef _WIN32_WINNT		// Allow use of features specific to Windows XP or later.                   
#define _WIN32_WINNT 0x0501	// Change this to the appropriate value to target other versions of Windows.
#endif						

#include <stdio.h>
#include <tchar.h>

#include <atlbase.h>
#include <atlstr.h>
#include <conio.h>

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