Re: Unable to capture Desktop Continously

From:
"AliR" <AliR@online.nospam>
Newsgroups:
microsoft.public.vc.mfc
Date:
Wed, 9 Sep 2009 14:25:09 -0500
Message-ID:
<OPwQCOYMKHA.2036@TK2MSFTNGP06.phx.gbl>
The only thing wrong I see is that you are not calling ReleaseDC on the
screen dc.

so the last line should be.
::ReleaseDC(ScreenDC.Detach());

AliR.

"Mohit" <behappy.mohit@gmail.com> wrote in message
news:e9a43034-ed36-4bd3-88a0-c0c1ae55cf32@w37g2000prg.googlegroups.com...

Hi,
I m trying to caputre Desktop continuously so i m using following
code which call after fixed interval of time.
But i m suprised to see i works for some time after that no screen
caputre occured .
Can u Please suggest where i m going wrong.As its work for some time

CDC ScreenDC;
CBitmap Capture;
if(ScreenDC.Attach(::GetDC(NULL)))
{

CSize Dimensions(GetSystemMetrics(SM_CXSCREEN), GetSystemMetrics
(SM_CYSCREEN));
Capture.CreateCompatibleBitmap(&ScreenDC, Dimensions.cx,
Dimensions.cy);//)
CDC MemDC;
//ScreenDC.StretchBlt(0, 0, 800,600, &ScreenDC, 0, 0,GetSystemMetrics
(SM_CXSCREEN) ,GetSystemMetrics(SM_CYSCREEN),SRCCOPY);
MemDC.CreateCompatibleDC(&ScreenDC);

CBitmap *OldBitmap = MemDC.SelectObject(&Capture);

MemDC.BitBlt(0, 0, Dimensions.cx,Dimensions.cy, &ScreenDC, 0, 0,
SRCCOPY);

CImage m2;
m2.Attach(Capture);
//m2.Save(fd.GetPathName());

m2.Save(_T("Image1.gif"),Gdiplus::ImageFormatGIF);//ImageFormatJPEG
m2.Detach();
}
ScreenDC.Detach();

Thanks in Advance

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