Can someone point me in the right direction?

[John Osborne]

I'm a beginner at this programming thing (C# and VB/VB.Net) but I have
been given a task that I don't even knwo how to start to accomplish.

I'm not asking anyone to write the code or anything, just to point me in
the right direction if you can.

The situation is this... My boss wants me to write a client that users
can use to connect to a machine on our network (we'll call this the host)
and view the host's screen as close to real time as possible. He wants to
use the application as a teaching tool in-house and wants to write it
in-house so that there will be no problems with changing it around or
royalties or anything.

I suggested something like VNC (it's free, right?), but he only wants a
client that shows the screen like VNC does. He wants no other
functionality. He also hates using other folks software - he's strange like
that.

Any ideas on the type of calls (API or otherwise) I should be looking at
to detect and transmit the screen image in a near-real-time manner?

Thanks for your help.

John Osborne

 

[dnagel]

You boss is wasting your time and his money. Use VNC, it has a theatre
mode that only permits viewing... VNC is a highly respected, well
written piece of code. He could only dream of writing something in-
house that approaches it's stability and functionality, (no offense
meant to your capabilities or skill set, but ... I'm not wrong). It has
thousands of man hours of design, coding, and testing. Theres totally
NO reason to exhibit a prejudice to it just because he (his team) didn't
write it.

Do yourself a favor and get away from this guy before he rubs off on you.

Other that that, I wish you the best in everything you do my compadre...

D.

 

[Fargo Holiday]

I'm a beginner at this programming thing (C# and VB/VB.Net) but I have
been given a task that I don't even knwo how to start to accomplish.

I'm not asking anyone to write the code or anything, just to point me in
the right direction if you can.

The situation is this... My boss wants me to write a client that users
can use to connect to a machine on our network (we'll call this the host)
and view the host's screen as close to real time as possible. He wants to
use the application as a teaching tool in-house and wants to write it
in-house so that there will be no problems with changing it around or
royalties or anything.

I suggested something like VNC (it's free, right?), but he only wants a
client that shows the screen like VNC does. He wants no other
functionality. He also hates using other folks software - he's strange like
that.

Any ideas on the type of calls (API or otherwise) I should be looking at
to detect and transmit the screen image in a near-real-time manner?

Thanks for your help.

John Osborne

Hmmm... you might look around sourceforge.net or freshmeat.net and either
look at the code on similar projects or ask the developers for advice.
dreamincode.net has some fairly active forums as well. I, personally, have
barely begun to bark up the win32 tree, so there isn't more than the vaugest
ideas in my head as to how to do what you need.

Best of luck!

 

[Olivier Jullian]

Hi John,

Have a look at this :
http://www.personalmicrocosms.com/html/ra.html

Should help, right ? ;-)

Olivier

 

[K_Lee]

I'm a beginner at this programming thing (C# and VB/VB.Net) but I have
been given a task that I don't even knwo how to start to accomplish.

I'm not asking anyone to write the code or anything, just to point me in
the right direction if you can.

The situation is this... My boss wants me to write a client that users
can use to connect to a machine on our network (we'll call this the host)
and view the host's screen as close to real time as possible. He wants to
use the application as a teaching tool in-house and wants to write it
in-house so that there will be no problems with changing it around or
royalties or anything.

I suggested something like VNC (it's free, right?), but he only wants a
client that shows the screen like VNC does. He wants no other
functionality. He also hates using other folks software - he's strange like
that.

Any ideas on the type of calls (API or otherwise) I should be looking at
to detect and transmit the screen image in a near-real-time manner?

Thanks for your help.

John Osborne

The VNC function traces for the your require functionalities looks
something like this:

http://www.slink-software.com/W/SrcDoc_Top/vnc-3.3.7/vnc-3.3.7-winsrc.sdoc/N_20

vnc-3.3.7-winsrc.sdoc
FillDisplayInfo - vncserver.cpp:1083
ClientUpdateTracker - vncclient.h:150
SimpleUpdateTracker - rfbUpdateTracker.h:61
add_changed - vncclient.h:158
TriggerUpdateThread - vncclient.cpp:1100
vncClientUpdateThread - vncclient.cpp:60
Trigger - vncclient.cpp:1117
Trigger - vncclient.cpp:117
ServerUpdateTracker - vncserver.h:237
add_changed - vncserver.cpp:47

http://www.slink-software.com/W/SL_...c/winvnc/rfbUpdateTracker.cpp/L_50/LN_66#L_63