microsoft.public.win32.programmer.gdi Google Group

Limit on size of EMF (Enhanced Metafile)?

2010-03-09T16:13:23Z

There seems to be a limit on the size of an EMF, but I can't find it
documented anywhere.
I did find this article:
[link]
that implies there are issues when the EMF is larger than 2G, but I am
seeing a problem with smaller files (about 500M) where I create the
EMF on disk:

Re: Slow text IO on 32 bit Windows 7

2010-03-08T14:57:21Z

Yes.
I experience slow drawing on 64 bit Windows 7 running on a real machine.
And, Windows 7 running in a VMware machine is slower than XP running in an
identical VMware machine, both on the same physical machine.
David Liebtag

Uniscribe...

2010-03-08T02:32:01Z

I'd like to stop using GetCharacterPlacement and use the uniscribe
equivalents. I've read all the help in SimpleScript but see what I am
looking for.
Specifically, I want to get the x, y extents of a unicoded string AND I want
to be able to do that with and without kerning. How do I do it?
Thanks,

Re: Slow text IO on 32 bit Windows 7

2010-03-06T17:04:46Z

On Mon, 1 Mar 2010 17:28:16 -0500, "David Liebtag"
You've mentioned VMware. Are you comparing VMware performance to
non-VMware performance? Could VMware be the cause of the performance
problem? Have you tried it on 32-bit Windows outside of a VM?
Chris

Clipping problem with DrawThemeTextEx

2010-03-05T16:07:58Z

Hi
I am trying to use DrawThemeTextEx with DTT_COMPOSITED to draw onto a
32-bit bitmap. It works great, except that it ignores the clipping
region (set with IntersectClipRect). If I remove the DTT_COMPOSITED the
clipping works, but of course the alpha channel gets messed up.
Any idea how to get the DTT_COMPOSITED flag and the clip rectangle work

Re: Slow text IO on 32 bit Windows 7

2010-03-04T12:40:40Z

Mihai N.,
I run XP all the time with East Asian enabled. It takes .522 seconds for
our product to display 1000 lines.
I enabled complex script. It took .6 seconds to display 1000 lines.
That's not it.
David Liebtag

Re: Slow text IO on 32 bit Windows 7

2010-03-04T07:22:30Z

Also based on the other posts I would guess this is due to the support for
double bytes and especially complex scripts.
([link])
These are not enabled by default on XP, but are always there in Vista/Win7
I understand you need Japanese support, but I would try to compare an XP

Re: Slow text IO on 32 bit Windows 7

2010-03-03T21:40:20Z

It'd certainly help identify whether it's a generic OS issue rather
than a display driver specific one though.
Dave

Re: Slow text IO on 32 bit Windows 7

2010-03-03T20:03:45Z

Here's the information I have:
The device manager for my 64 bit Windows 7 machine says my display adapter
is:
NVIDIA GeForce 6150SE nForce 430 (Microsoft Corporation - WDDM)
The device manager for my 32 bit Windows 7 machine says my display adapter
is:
VMware SVGA II
Those are the only two machines I have. I don't have any way to try other

Re: Slow text IO on 32 bit Windows 7

2010-03-03T19:09:45Z

Best to check though don't you think?
Are they using different graphics cards though?
Dave

Set mouse pointer scheme on Vista

2010-03-03T18:11:01Z

Is there a programmatic way to change the default mouse scheme (Control
Panel\Mouse\Pointers\Scheme) for all users on a Vista machine. I need to set
the mouse scheme to "None" so the assistive software we use does not have
trouble. I looked at SystemParamtersInfo and SPI_SETCURSORS, but I don;t

Re: Slow text IO on 32 bit Windows 7

2010-03-03T17:43:58Z

I doubt it is a display driver problem.
The problem was reported to me by one of our customers. I believe he has
experienced it on several machines.
I was able to reproduce it on my one machine that's running Windows 7.
David Liebtag

Re: Slow text IO on 32 bit Windows 7

2010-03-03T17:29:08Z

Display driver issue perhaps?
Have you tried a different machine/graphics card to see if there's any
difference between Nvidia/ATI ?
Dave

Re: Slow text IO on 32 bit Windows 7

2010-03-03T15:35:52Z

Martin,
As I tried to explain in my reply to Mihai N., I only used printf to prove
that the problem is not unique to my program. I am not actually concerned
about output to DOS command prompt windows.
As I also explained, I do use TextOut into a regular window. That is the
case which I care about.

Re: Slow text IO on 32 bit Windows 7

2010-03-03T15:26:01Z

Hello David,
Ok, some more hints from me to help you:
Are you write text by printf() into a console such as stdout?
Try the text output with an alternative WriteConsole() function.
Probably you can also try an alternative with TextOut() API into a "regular"
graphical Window?
Maybe TextOut() is faster than DrawText(), but i don't know if it is so.