http image requests?

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5 total messages Started by chris Tue, 19 Dec 2006 16:27

#384

Author: chris
Date: Tue, 19 Dec 2006 16:27

15 lines
1373 bytes

I would like to be able to take a jpeg from a server to an 
image box in C++ builder 6.0. Lets say, at address 
"http://192.168.1.10/folder/image.jpg". Is there any way 
possible that I can pull the file straight from that address 
into my application? I have also tried using 
the "CppWebBrowser" ActiveX to open the page, and while it is 
open, I try to pull the file from the Temp Internet Files. 
However the file is still a link in this folder and is not 
recognized as a jpeg. I can't even use the "CopyFile()" 
Function with it. 

Any help is much appreciated!

chris

Re: http image requests?

#385

Author: Hans Galema
Date: Tue, 19 Dec 2006 17:42

13 lines
1380 bytes

chris wrote:
> I would like to be able to take a jpeg from a server to an 
> image box in C++ builder 6.0. Lets say, at address 
> "http://192.168.1.10/folder/image.jpg". Is there any way 
> possible that I can pull the file straight from that address 
> into my application?

Yes you can.

Use TIdHttp to Get it from that url in a stream.
Then use Image1->Picture->LoadFromStream();

Hans.

Re: http image requests?

#436

Author: Remy Lebeau (TeamB)
Date: Tue, 19 Dec 2006 18:40

27 lines
1847 bytes

"chris" <help@help.com> wrote in message
news:458812d8$1@newsgroups.borland.com...

> I would like to be able to take a jpeg from a server to
> an image box in C++ builder 6.0.

You will have to download the image to a TStream or a file first, and then
load that afterwards.

> Is there any way possible that I can pull the file straight from that
> address into my application?

There are many ways to do that.  Use a third-party HTTP component, such as
the one from Indy (http://www.indyproject.org), ICS
(http://www.overbyte.be), or Synapse (http://www.ararat.cz/synapse).  Or use
Microsoft's WinInet or WinHTTP libraries, such as the URLDownloadToFile
(http://msdn.microsoft.com/workshop/networking/moniker/reference/functions/u
rldownloadtofile.asp) or URLDownloadToCacheFile()
(http://msdn2.microsoft.com/en-gb/library/ms775122.aspx) function.

> I have also tried using the "CppWebBrowser" ActiveX to open the page

Do not go that way.  That is a lot of unnecessary overhead.


Gambit

Re: http image requests?

#437

Author: Remy Lebeau (TeamB)
Date: Tue, 19 Dec 2006 18:41

14 lines
1345 bytes

"Hans Galema" <notused@notused.nl> wrote in message
news:458824ea@newsgroups.borland.com...

> Use TIdHttp to Get it from that url in a stream.
> Then use Image1->Picture->LoadFromStream();

TPicture::LoadFromStream() only works for bitmaps.  To load a JPG, you will
have to use TPicture::LoadFromFile() instead (making sure the JPG format is
registered with TPicture first), or else instantiate a separate TJPEGImage
and then call its LoadFromStream() instead.


Gambit

Re: http image requests?

#438

Author: chris
Date: Tue, 19 Dec 2006 20:09

7 lines
1052 bytes

Thanks for the info. That should do what I need it to. Now I 
just have to apply it.

Thanks again,

chris

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