Screen capture

[Mvmelle]

Hello,

I want to capture the entire screen as a bitmap (so I can stream it as an
http GET).
But I fail to capture it.
I tried some samples I found on the internet, but without success.
Any help would be appreciated

[Nishant S]

See :-

http://www.codeproject.com/managedcpp/ijwscrcap.asp

--
Regards,
Nish [VC++ MVP]

"Mvmelle" <mv*****@yahoo. com> wrote in message
news:uN******** ******@TK2MSFTN GP12.phx.gbl...

Hello,

I want to capture the entire screen as a bitmap (so I can stream it as an
http GET).
But I fail to capture it.
I tried some samples I found on the internet, but without success.
Any help would be appreciated

[Mvmelle]

Sorry, but I need an unmanaged sample.

"Nishant S" <ni**@nospam.as ianetindia.com> wrote in message
news:ee******** ******@tk2msftn gp13.phx.gbl...

See :-

http://www.codeproject.com/managedcpp/ijwscrcap.asp

--
Regards,
Nish [VC++ MVP]

"Mvmelle" <mv*****@yahoo. com> wrote in message
news:uN******** ******@TK2MSFTN GP12.phx.gbl...

Hello,

I want to capture the entire screen as a bitmap (so I can stream it as an http GET).
But I fail to capture it.
I tried some samples I found on the internet, but without success.
Any help would be appreciated

[William DePalo [MVP VC++ ]]

"Mvmelle" <mv*****@yahoo. com> wrote in message
news:uN******** ******@TK2MSFTN GP12.phx.gbl...

I want to capture the entire screen as a bitmap (so I can stream it as an
http GET).
This may help:

http://support.microsoft.com/?id=97193
But I fail to capture it.
I tried some samples I found on the internet, but without success.

Very nearly all of the WIN32 API's that can fail return an error code or set
the last error value in the calling thread. When you are having trouble it
is often a good idea to describe a little about the solutions you have tried
and how they have failed.

That said, though, the GDI group is probably better suited to your question
than this one.

Regards,
Will

[William DePalo [MVP VC++ ]]

"Mvmelle" <mv*****@yahoo. com> wrote in message
news:e0******** ******@TK2MSFTN GP12.phx.gbl...

This, got me going.
That's good.
Now sending a HBITMAP trough an open socket is another problem.

Handles are by and large process-specific and therefore machine-specific as
well. You don't want to send the handle to a bitmap. You want to send the
bitmap's bits with an appropriate content (MIME) type, most often image/bmp.
If you need to conserve bandwidth at the expense of image quality then
image/jpeg may be a better choice. Of course then you'll need a compressor
as well.

Regards,
Will

[Onega]

save the bmp into IStream, then you can get HGLOBAL from the IStream. The
following is a clue

void savebmp(CBitmap & bmp)
{
CPictureHolder picture;
picture.CreateF romBitmap((HBIT MAP)bmp, NULL, TRUE);
LPPICTUREDISP pPictureDisp=pi cture.GetPictur eDispatch();
pPictureDisp->Release(); // must be released
IStorage* pStg = 0;

hr = ::StgCreateDocf ile(L"c:\\pictt est",
STGM_SHARE_EXCL USIVE |
STGM_CREATE |
STGM_READWRITE,
0, &pStg);
if(SUCCEEDED(hr ))
{
IStream* pStream = 0;

hr = pStg->CreateStream(L "PICTURE",
STGM_SHARE_EXCL USIVE |
STGM_CREATE |
STGM_READWRITE,
0, 0, &pStream);
if(SUCCEEDED(hr ))
{
hr = pPictureDisp->SaveAsFile(pSt ream,
TRUE, // save mem copy
NULL);
pStream->Release();
}
pStg->Release();
}
pPictureDisp->Release();
}
"Mvmelle" <mv*****@yahoo. com> wrote in message
news:e0******** ******@TK2MSFTN GP12.phx.gbl...

This, got me going.
Now sending a HBITMAP trough an open socket is another problem.

"William DePalo [MVP VC++ ]" <wi***********@ mvps.org> wrote in message
news:eH******** ******@TK2MSFTN GP11.phx.gbl...

"Mvmelle" <mv*****@yahoo. com> wrote in message
news:uN******** ******@TK2MSFTN GP12.phx.gbl...

I want to capture the entire screen as a bitmap (so I can stream it as an http GET).

This may help:

http://support.microsoft.com/?id=97193

But I fail to capture it.
I tried some samples I found on the internet, but without success.

Very nearly all of the WIN32 API's that can fail return an error code or

set

the last error value in the calling thread. When you are having trouble it is often a good idea to describe a little about the solutions you have

tried

and how they have failed.

That said, though, the GDI group is probably better suited to your

question

than this one.

Regards,
Will