//------------------------------------------------------------------------------
//?File:?DibHelper.cpp
//
//?Desc:?DirectShow?sample?code?-?In-memory?push?mode?source?filter
//???????Helper?routines?for?manipulating?bitmaps.
//
//?Copyright?（c）?Microsoft?Corporation.??All?rights?reserved.
//------------------------------------------------------------------------------

#include?

#include?“dibhelper.h“

HBITMAP?CopyScreenToBitmap（LPRECT?lpRect?BYTE?*pData?BITMAPINFO?*pHeader?HCURSOR?hCursor）
{
????HDC?????????hScrDC?hMemDC;?????????//?screen?DC?and?memory?DC
????HBITMAP?????hBitmap?hOldBitmap;????//?handles?to?deice-dependent?bitmaps
????int?????????nX?nY?nX2?nY2;???????//?coordinates?of?rectangle?to?grab
????int?????????nWidth?nHeight;????????//?DIB?width?and?height
????int?????????xScrn?yScrn;???????????//?screen?resolution

????//?check?for?an?empty?rectangle
????if?（IsRectEmpty（lpRect））
??????return?NULL;

????//?create?a?DC?for?the?screen?and?create
????//?a?memory?DC?compatible?to?screen?DC???
????hScrDC?=?CreateDC（TEXT（“DISPLAY“）?NULL?NULL?NULL）;



????hMemDC?=?CreateCompatibleDC（hScrDC）;

????//?get?points?of?rectangle?to?grab
????nX??=?lpRect->left;
????nY??=?lpRect->top;
????nX2?=?lpRect->right;
????nY2?=?lpRect->bottom;

????//?get?screen?resolution
????xScrn?=?GetDeviceCaps（hScrDC?HORZRES）;
????yScrn?=?GetDeviceCaps（hScrDC?VERTRES）;

????//make?sure?bitmap?rectangle?is?visible
????if?（nX?????????nX?=?0;
????if?（nY?????????nY?=?0;
????if?（nX2?>?xScrn）
????????nX2?=?xScrn;
????if?（nY2?>?yScrn）
????????nY2?=?yScrn;

????nWidth??=?nX2?-?nX;
????nHeight?=?nY2?-?nY;

????//?create?a?bitmap?compatible?with?the?screen?DC
????hBitmap?=?CreateCompatibleBitmap（hScrDC?nWidth?nHeight）;

????//?select?new?bitmap?into?memory?DC
????hOldBitmap?=?（HBITMAP）?Selectobject（hMemDC?hBitmap）;

????//?bitblt?screen?DC?to?memory?DC
????BitBlt（hMemDC?0?0?nWidth?nHeight?hScrDC?nX?nY?SRCCOPY）;

	//?draw?mouse
	POINT?pt;
	GetCursorPos（&pt）;
	DrawIconEx（hMemDC?pt.x-10?pt.y-10?hCursor?0?0?0?NULL?DI_NORMAL）;??

????//?select?old?bitmap?back?into?memory?DC?and?get?handle?to
????//?bitmap?of?the?screen???
????hBitmap?=?（HBITMAP）?Selectobject（hMemDC?hOldBitmap）;

????//?Copy?the?bitmap?data?into?the?provided?BYTE?buffer
????GetDIBits（hScrDC?hBitmap?0?nHeight?pData?pHeader?DIB_RGB_COLORS）;

????//?clean?up
????DeleteDC（hScrDC）;
????DeleteDC（hMemDC）;

????//?return?handle?to?the?bitmap
????return?hBitmap;
}

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件??????31944??2016-11-14?20:09??VirtualCamera源代碼+配置\Debug\DibHelper.obj

?????文件??????????0??2016-11-14?20:09??VirtualCamera源代碼+配置\Debug\DibHelper.sbr

?????文件??????59154??2016-11-14?20:09??VirtualCamera源代碼+配置\Debug\Dll.obj

?????文件??????????0??2016-11-14?20:09??VirtualCamera源代碼+配置\Debug\Dll.sbr

?????文件?????139564??2016-11-14?20:09??VirtualCamera源代碼+配置\Debug\Filter.obj

?????文件??????????0??2016-11-14?20:09??VirtualCamera源代碼+配置\Debug\Filter.sbr

?????文件?????920576??2016-11-14?20:09??VirtualCamera源代碼+配置\Debug\vc120.idb

?????文件?????782336??2016-11-14?20:09??VirtualCamera源代碼+配置\Debug\vc120.pdb

?????文件???????2220??2016-11-14?20:09??VirtualCamera源代碼+配置\Debug\VCam.Build.CppClean.log

?????文件???????1343??2016-11-14?20:09??VirtualCamera源代碼+配置\Debug\VCam.exp

?????文件???????1492??2016-11-14?20:09??VirtualCamera源代碼+配置\Debug\VCam.lib

?????文件????6122496??2016-11-14?20:09??VirtualCamera源代碼+配置\Debug\VirtualCamera.bsc

?????文件???????4989??2016-11-14?20:09??VirtualCamera源代碼+配置\Debug\VirtualCamera.log

?????文件????????606??2016-11-14?20:09??VirtualCamera源代碼+配置\Debug\VirtualCamera.tlog\BscMake.command.1.tlog

?????文件????????990??2016-11-14?20:09??VirtualCamera源代碼+配置\Debug\VirtualCamera.tlog\bscmake.read.1.tlog

?????文件????????566??2016-11-14?20:09??VirtualCamera源代碼+配置\Debug\VirtualCamera.tlog\bscmake.write.1.tlog

?????文件???????2456??2016-11-14?20:09??VirtualCamera源代碼+配置\Debug\VirtualCamera.tlog\cl.command.1.tlog

?????文件??????70110??2016-11-14?20:09??VirtualCamera源代碼+配置\Debug\VirtualCamera.tlog\CL.read.1.tlog

?????文件???????2270??2016-11-14?20:09??VirtualCamera源代碼+配置\Debug\VirtualCamera.tlog\CL.write.1.tlog

?????文件???????1452??2016-11-14?20:09??VirtualCamera源代碼+配置\Debug\VirtualCamera.tlog\link.command.1.tlog

?????文件???????3818??2016-11-14?20:09??VirtualCamera源代碼+配置\Debug\VirtualCamera.tlog\link.read.1.tlog

?????文件????????778??2016-11-14?20:09??VirtualCamera源代碼+配置\Debug\VirtualCamera.tlog\link.write.1.tlog

?????文件????????194??2016-11-14?20:09??VirtualCamera源代碼+配置\Debug\VirtualCamera.tlog\VirtualCamera.lastbuildstate

?????文件????????420??2016-11-14?20:09??VirtualCamera源代碼+配置\Debug\VirtualCamera.tlog\VirtualCamera.write.1u.tlog

?????文件???????2577??2009-02-19?16:18??VirtualCamera源代碼+配置\DibHelper.cpp

?????文件???????1701??2009-02-19?14:43??VirtualCamera源代碼+配置\DibHelper.h

?????文件????????586??2016-11-14?12:04??VirtualCamera源代碼+配置\directshow.props

?????文件???????3655??2016-11-14?20:09??VirtualCamera源代碼+配置\Dll.cpp

?????文件????????257??2009-02-19?11:04??VirtualCamera源代碼+配置\Dll.def

?????文件???????1644??2014-09-16?23:38??VirtualCamera源代碼+配置\dshow\include\baseclasses\amextra.h

............此處省略65個文件信息