Re: hooked functions in usermode printer driver

Tech-Archive recommends: Repair Windows Errors & Optimize Windows Performance

From: Vipin (Vipin_at_nospam.com)
Date: 10/13/04 

Date: Wed, 13 Oct 2004 20:22:50 +0530

Are your hooks specified properly in DrvEnableSurface(...)?

"Matt Kane" <MattKane@discussions.microsoft.com> wrote in message
news:452D8CC0-D896-45B5-9642-52CEB75A97CB@microsoft.com...
> I doubt that's it, as it's only certain things that aren't drawn on the
> surface. For instance, if I draw a square and a circle in one particular
> application, only the square will be printed.
>
> "Vipin" wrote:
>
> > ok,ok, I now I understand in 2000/XP you will have to use banding
method
> > because EngCreateBitmap fails for large sizes in usermode.
> >
> > In kernel mode the call suceeds for large sizes also.
> >
> > I had seen this behaviour before.
> >
> > In fact the engine surface creation has failed I feel over there. check
the
> > return code of EngCreateBitmap(...)
> >
> >
> >
> >
> > "Matt Kane" <MattKane@discussions.microsoft.com> wrote in message
> > news:3078C779-314C-4F7B-B988-C03F93DDE617@microsoft.com...
> > > Engine-managed. How would an HP driver help me? Do they have source
code
> > > available? There don't seem to be any examples of this in the DDK
samples.
> > >
> > > "Vipin" wrote:
> > >
> > > > That should be a problem with your driver and how you are managing
the
> > > > surfaces. Get an HP driver from their website and print, there are
User
> > Mode
> > > > Monolithic drivers available on their website.They will all print
> > properly
> > > > on all the pages. BTW what surface are you using device managed ot
> > engine
> > > > managed??
> > > >
> > > >
> > > > "Matt Kane" <MattKane@discussions.microsoft.com> wrote in message
> > > > news:A9F806B2-6EE7-4DB8-8CAC-CABF21C55CC5@microsoft.com...
> > > > > I have a monolithic usermode printer driver (see my numerous
previous
> > > > > question for details :) under development. It's adapted from an
> > earlier
> > > > > kernel-mode printer driver. I'm trying to work out the final
kinks,
> > and
> > > > I've
> > > > > come across some rather odd behavior.
> > > > >
> > > > > I've found that some applications have trouble printing particular
> > shapes
> > > > > (diagonal lines and ellipsesfor example) on any page except the
first.
> > In
> > > > the
> > > > > kernel-mode driver, these work fine, and in the debug output I can
see
> > > > calls
> > > > > to DrvBitBlt for each of these shapes that is drawn on the printed
> > image.
> > > > >
> > > > > In user-mode, I don't see these calls. In fact, I don't see any of
my
> > > > driver
> > > > > code being called. Somehow these shapes make it onto the first
page I
> > > > print,
> > > > > but never the second.
> > > > >
> > > > > I am hooking DrvBitBlt, DrvCopyBits, DrvStretchBlt, DrvTextOut,
> > > > > DrvFillPath, DrvStrokePath, DrvStrokeAndFillPath, and DrvLineTo.
> > > > >
> > > > > How would the application get data onto the driver's surfaces?
> > > > >
> > > > > --
> > > > > Matt Kane
> > > > > mkane@zebra.camel.com minus cigarettes
> > > >
> > > >
> > > >
> >
> >
> >

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