#include?“../stdafx.h“
#include?“VideoDxCaptor.h“

#include?
#pragma?comment（lib?“Dwmapi.lib“）

?VideoDXCaptor::VideoDXCaptor（void）??
?{?
	?m_lpDDraw?=?NULL;?
	?m_lpDDSPrime?=?NULL;?
	?m_lpDDSBack?=?NULL;
?}
VideoDXCaptor::~VideoDXCaptor（void）?
{?
	Deinit（）;
}

BOOL?VideoDXCaptor::Init（）
{
	HMODULE?hDll?=?LoadLibrary（“ddraw.dll“）;
	if?（hDll?==?NULL）
	{
		（“無法載入ddraw.dll\n“）;
		return?FALSE;
	}

	//?載入ddraw的導入函數
	PFN_DirectDrawCreate?DirectDrawCreateFunc?=?（PFN_DirectDrawCreate）GetProcAddress（hDll?“DirectDrawCreate“）;
	if?（DirectDrawCreateFunc?==?NULL）
	{
		（“無法找到訪問點：DirectDrawCreate\n“）;
		return?FALSE;
	}

	HRESULT?hr?=?DirectDrawCreateFunc（NULL?&m_lpDDraw?NULL）;
	if?（FAILED（hr））
	{
		（“DirectDrawCreate失敗\n“）;
		return?FALSE;
	}

	hr?=?m_lpDDraw->SetCooperativeLevel（NULL?DDSCL_NORMAL）;
	if?（FAILED（hr））
	{
		（“SetCooperativeLevel失敗\n“）;
		return?FALSE;?
	}

	DDSURFACEDESC?DDSdesc;
	ZeroMemory（&DDSdesc?sizeof（DDSdesc））;
	DDSdesc.dwSize?????????=?sizeof（DDSdesc）;
	DDSdesc.dwFlags????????=?DDSD_CAPS;
	DDSdesc.ddsCaps.dwCaps?=?DDSCAPS_PRIMARYSURFACE;
	hr?=?m_lpDDraw->CreateSurface（&DDSdesc?&m_lpDDSPrime?NULL）;
	if?（FAILED（hr））
	{
		（“CreateSurface?主表面失敗\n“）;
		return?FALSE;?
	}

	ZeroMemory（&DDSdesc?sizeof（DDSdesc））;
	DDSdesc.dwSize??=?sizeof（DDSdesc）;
	DDSdesc.dwFlags?=?DDSD_ALL;
	hr?=?m_lpDDSPrime->GetSurfaceDesc（&DDSdesc）;
	if?（FAILED（hr））
	{
		（“GetSurfaceDesc失敗\n“）;
		return?FALSE;
	}

	//?備份描述信息
	memcpy（&m_DDSdesc?&DDSdesc?sizeof（DDSdesc））;

	DDSdesc.dwFlags????????=?DDSD_CAPS?|?DDSD_HEIGHT?|DDSD_WIDTH;?
	DDSdesc.ddsCaps.dwCaps?=?DDSCAPS_OFFSCREENPLAIN;
	hr?=?m_lpDDraw->CreateSurface（&DDSdesc?&m_lpDDSBack?0）;
	if?（FAILED（hr））
	{
		（“CreateSurface?后備表面失敗\n“）;
		return?FALSE;
	}
	return?TRUE;
}
VOID?VideoDXCaptor::Deinit（）
{
	if?（m_lpDDSBack）
	{
		m_lpDDSBack->Release（）;
		m_lpDDSBack?=?NULL;
	}

	if?（m_lpDDSPrime）
	{
		m_lpDDSPrime->Release（）;
		m_lpDDSPrime?=?NULL;
	}

	if?（m_lpDDraw）
	{
		m_lpDDraw->Release（）;
		m_lpDDraw?=?NULL;
	}
}

BOOL?VideoDXCaptor::CaptureImage（RECT?&rect?void?*pData?INT?&nLen）
{
	if?（m_lpDDSBack?==?NULL）
	{
		（“DDraw對象未初始化\n“）;
		return?FALSE;
	}

	HRESULT?hr?=?m_lpDDSBack->BltFast（rect.left?rect.top?m_lpDDSPrime?&rect?DDBLTFAST_NOCOLORKEY?|?DDBLTFAST_WAIT）;
	if?（FAILED（hr））
	{
		（“BltFast失敗\n“）;
		return?FALSE;
	}

	DDSURFACEDESC?surfDesc;
	ZeroMemory（&surfDesc?sizeof（surfDesc））;?
	surfDesc.dwSize?=?sizeof（surfDesc）;
	//hr?=?lpDDSPrime->Lock（&rect?&surfdesc?DDLOCK_READONLY?|?DDLOCK_WAIT?|?DDLOCK_SURFACEMEMORYPTR??NULL）;
	hr?=?m_lpDDSBack->Lock（&rect?&surfDesc?DDLOCK_READONLY?|?DDLOCK_WAIT?|?DDLOCK_SURFACEMEMORYPTR??NULL）;
	if?（FAILED（hr））
	{
		（“Lock失敗\n“）;
		return?FALSE;
	}

	//?這里拷貝的是32位數據，我們只需要24位的RGB數據
	//memcpy（pBuf?（BYTE*）surfDesc.lpSurface?surfDesc.dwWidth?*?surfDesc.dwHeight?*?surfDesc.ddpfPixelFormat.dwRGBBitCount?/?8）;

	//?將抓上來的圖像轉成RGB數據（去掉Alpha值）
	if?（m_DDSdesc.ddpfPixelFormat.dwRGBBitCount?==?32）
	{
		nLen?=?（rect.right?-?rect.left）?*?（rect.bottom?-?rect.top）?*?3;
		

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2018-08-21?11:27??screencapture\
?????目錄???????????0??2018-08-21?10:41??screencapture\.vs\
?????目錄???????????0??2018-08-21?10:41??screencapture\.vs\capturecreen\
?????目錄???????????0??2018-08-21?11:10??screencapture\.vs\capturecreen\v14\
?????文件???????22528??2018-08-21?11:27??screencapture\.vs\capturecreen\v14\.suo
?????目錄???????????0??2018-08-21?10:41??screencapture\Captor\
?????文件????????3663??2017-04-26?00:57??screencapture\Captor\DXCaptor.cpp
?????文件?????????789??2017-04-26?00:57??screencapture\Captor\DXCaptor.h
?????文件????????6115??2017-04-26?00:57??screencapture\Captor\DXGICaptor.cpp
?????文件????????1087??2017-04-26?00:57??screencapture\Captor\DXGICaptor.h
?????文件????????4566??2017-04-26?00:57??screencapture\Captor\GDICaptor.cpp
?????文件?????????750??2017-04-26?00:57??screencapture\Captor\GDICaptor.h
?????文件??????????40??2018-08-21?11:34??screencapture\README.md
?????目錄???????????0??2018-08-21?11:28??screencapture\capturecreen\
?????文件????????3655??2017-04-26?00:57??screencapture\capturecreen\DXCaptor.cpp
?????文件?????????789??2017-04-26?00:57??screencapture\capturecreen\DXCaptor.h
?????文件????????4558??2017-04-26?00:57??screencapture\capturecreen\GDICaptor.cpp
?????文件?????????740??2017-04-26?00:57??screencapture\capturecreen\GDICaptor.h
?????文件????????1710??2017-04-26?00:57??screencapture\capturecreen\ReadMe.txt
?????文件????????8341??2018-08-21?11:34??screencapture\capturecreen\capturecreen.cpp
?????文件????????8046??2018-08-21?11:21??screencapture\capturecreen\capturecreen.vcxproj
?????文件????????1339??2018-08-21?11:21??screencapture\capturecreen\capturecreen.vcxproj.filters
?????文件?????????291??2017-04-26?00:57??screencapture\capturecreen\stdafx.cpp
?????文件?????????305??2017-04-26?00:57??screencapture\capturecreen\stdafx.h
?????文件?????????306??2017-04-26?00:57??screencapture\capturecreen\targetver.h
?????文件????????1290??2017-04-26?00:57??screencapture\capturecreen.sln