Whil I don't know what camera you use, XP DOES treat removable USB devices
differently based upon their type.

In the case of a camera, it uses WIA (Windows Image Aquisition) API to connect 
and handle dealing with the camera.

I'd suggest checking the WIA API's.


--- Roger Boyesen <[EMAIL PROTECTED]> wrote:

> The camera does not require any extra software in XP to operate.
> As soon as you connect the camera to the USB port, Xp detects it as
> a digital camera and adds an icon in explorer, but it does not map the camera
> to a drive letter.
> 
> Roger Boyesen 
> 
> -----Opprinnelig melding-----
> Fra: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] På vegne av
> Stephen Posey
> Sendt: 20. november 2006 17:41
> Til: Borland's Delphi Discussion List
> Emne: Re: Drag and drop from a camera connected to USB port
> 
> 
> ---- Borland's Delphi Discussion List <[email protected]> wrote:
> >
> > Hello
> >  
> > I have a small problem....
> > I'm using D.Melanders drag & drop components (v.4.0) in one of my 
> > applications.
> > I want to drag and drop pictures straight from a Canon Powershot S80 
> > into my application, but the drag and drop components does not support 
> > drag and drop from a USB device (must be a drive letter).
> > Does anybody know how to do this in code ?
> > I'm using Delphi 5 Enterprise.
> > The reason for the need to drag the pictures into my app is that my 
> > users allways use max resolution on the camera, but I want to resize 
> > all pics to 1600x1200 and compress them a little bit before sending 
> > the pictures to the archive.
> > This works perfect in my app from Explorer if you have the pictures on 
> > a local disk or a network drive, but not straight from the camera.
> 
> Hmmm, my experience with digital USB cameras is that they all map their image
> storage as a removeable drive when you link them to the PC. 
> 
> I suspect if you check Explorer or My Computer after hooking up the camera
> you'll see there's a drive letter mapped that represents the camera's image
> storage.
> 
> Now, the particular camera you're using may have installed its own
> proprietary viewing software that it registers to be brought up when the
> camera is attached; and that software may well NOT support shell drag and
> drop (can you drag and drop images from it into an Explorer folder?). 
> 
> If that's the case and you can't get your users to skip the software and use
> the mapped drive in Explorer instead, there's not much to be done about it
> except complain to the software writers and ask them to add drag and drop. 
> 
> Or perhaps you could replace or supplement the registered viewer application
> with your own that references the camera's storage? That way the user
> wouldn't even have to bother with drag and drop; your app could serve as a
> direct interface onto the images.
> 
> HTH
> 
> Stephen Posey
> [EMAIL PROTECTED]
> _______________________________________________
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> 



 
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