A little help needed

[Arnt Witteveen]

The Vnc people will propably answer this better, but I'll try my hand at
some of this...

-----Original Message-----
From: Jeferson Charles Mayer [mailto:jeff.charles "at" zaz.com.br]
Sent: dinsdag 2 november 1999 20:53
To: Arnt.Witteveen "at" vartec.be
Subject: A little help needed


I am a newcomer to VNC. Some days ago, I downloaded the WinVNC 3.3.3r2
source code and tried to compile it under Win95, using VC++ 5.0.  

A word of warning here: I believe they switched to using VC6 recently.

Before trying to modify the source code, I would like to understand some
points, so I'm asking for some help:
 
1. I get errors when compiling the WinVNC server, specifically related to
constants and types used in low level hooking. I suppose that this is
happening because some functions, types and constants (like WH_KEYBOARD_LL,
KBDLLHOOKSTRUCT, etc.) are WinNT specific. Do you have any recommendation
for a Win95 build? Should I just strip off such code? 

 
This may be explained by the above ? In any case, I think that the server
for 95 and NT are the same, if not there will probably be a #define WIN95 or
something (ok, I'm guessing here)...

2. In the "Connection options" dialog (WinVNC viewer), encoding options:
When I click on "Raw", the original option doesn't toggle, that is, I get 2
radio buttons checked at the same time. I first noticed that when I
downloaded and ran the installation pack. So, after I downloaded the source
code, I found out that the "Raw" radio button has its "group" property
checked. Isn't that just wrong? 

 
Yes, I think it is. 

3. Running VNC on a 10Mb local network, server and viewer both on Pentium
233MHz, I did a simple test: just moving the mouse pointer around (no mouse
buttons pressed). The effect was the following: at the server machine, I
could see a smooth movement of the pointer, but, an the viewer, I just could
see a mouse pointer jumping terribly, unless I moved it VERY slowly. Well,
it just seemed that something was very wrong, because all I was doing was
moving normally the mouse around the desktop, using 16 bits color depth,
800x600 at both ends. What could cause so much overhead? 

 
Nothing... If the server were X-win, it would work fast, I think. I'm in
almost the same situation as you (but a 100Mb network), and I notice the
same thing. From what I've read on this list, the problem is not so much
getting the update acress the wire, but determining when something has
updated/changed... This seems to go much better under X-Win than under
MS-Win.
 
Arnt

 


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