Two PBDOS questions

[Lothar Pink]

I have two questions regarding PB/DOS.

* Is it possible to do a DOS graphics screen capture using PBDOS? So,
read out the current graphics mode (1-12) and get all pixels on the screen?

* Is it possible to create a TSR which runs unter 2000/XP - in a way that it
is loaded each time a DOS program is started? So, somehow similar to using
AppInit_DLL in Windows.


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[Lothar Pink]

I have to add that I found a way to load a program when NTVDM starts using
autoexec.nt file. However, it doesn't work with PB/DOS created programs. For
example using the demo I have created a noname2.exe which just prints out "asdf".
When I add the call to the EXE file inside the autoexec.nt, the autoexec.nt file
is NOT processed at all. However, other things I add - like "echo" and the like -
work perfectly.

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[Lothar Pink]

I have found my answer to question 2:

Just modify HKLM\Software\Microsoft\Command Processor\AutoRun inside registry,
and the TSR will be loaded.

But about the screenshots: Do I need to access the hardware directly to grab the
screen data (on any PB-supported graphics mode), or is there a built-in command
for that?

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[Don Schullian]

Grabbing the graphics from a DOS screen is dependant upon which
screen happens to be in use. If, for example, you're using #12
then the pixels are stored in 4 layers with one bit for each
pixel on one of the layers. A total mess.

Yes, to get the data out with any kind of speed requires that you
access memory directly. I've got the routines laying around somewhere
still (I think) if you don't find anything in POFFs give me a shout
and I'll see if I can dig them out.

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--
C'ya
Don
don at DASoftVSS dot com
http://www.DASoftVSS.com
I program better than those who program faster
Faster than those who
program better.

[Lothar Pink]

Hi Don,

Thanks for your reply. Great, so I found a way to do DOS fullscreen screenshots
from a Windows application without having to write a kernel module.

I don't need complete code, just some specification of the memory addresses. I don't have
POFFs but I'll look into Google. And I need a way to detect the current graphics mode
(I guess I have to use in/out for that)


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[Don Schullian]

Lothar,

D/load POFFs. It's only the greatest source of PB code out there!

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--
C'ya
Don
don at DASoftVSS dot com
http://www.DASoftVSS.com
I program better than those who program faster
Faster than those who
program better.