Hello
I downloaded the source code of VNC and had a look at it.
Apparently VNC makes screen captures for a Win32 PC by using API's such as GetDIBits(). But it's not clear to me how the server part of the application knows that something has changed on the screen of the PC. Furthermore ,I don't
It does not know that. That's why you can configure several polling options in the vncserver. It just peeks at some regular interval or when it expects differences (like mouse or keyboard actions).
know if VNC makes a screen capture of the entire screen or just of the part that has been changed.
That's also one of the polling options.
I saw in the source code that regions are beeing used with API's such as GetRegionData() and I gather VNC is using regions to determine which part of the screen has to be refreshed, but I'm not familiar with regions and I didn't manage to understand how it works.
In the end, I expect/experienced it does just some matrix over the polled area and sends the updated rectangles. I don't know for sure.
Can anyone help me ?
Thank you in advance
Serge Castelier _______________________________________________ VNC-List mailing list [EMAIL PROTECTED] To remove yourself from the list visit: http://www.realvnc.com/mailman/listinfo/vnc-list
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