c++ - Capturing screen on a remote Windows server (Windows Vista or later) -

my question capturing screen on remote server windows vista or later installed desktops (default, uac screen, winlogon, screensaver). how achieve without user logined locally or via rdp. problem changes in vista brought isolation of windows services desktops. i've found information here , there address issue:

• http://www.brianbondy.com/blog/id/100/
• https://serverfault.com/questions/482352/take-screenshot-from-server-screen-while-disconnected-from-rdp
• why print screen in windows service return black image?
• capture screen on server desktop session
• https://msdn.microsoft.com/en-us/library/windows/desktop/hh404487(v=vs.85).aspx

but unfortunately not see solution. i want windows remote desktop connection clone. in other words windows machine kind of server can connect remotely , screenshots it.

there piece of software called tightvnc need source in c++ it's hard me find main idea of how overcome windows limitations. maybe can tell?

thanks in advance help.

tightvnc server implements rfb protocol. service microsoft's rdp (remote desktop protocol), albeit, simpler.

the tightvnc server additionally has it's own encoding (called tight), , clients support encoding allow specify image compression , quality.

understand "remote screenshots" aren't supplied either protocol quite imagine. graphic updates sent , you're supposed manage image framebuffer , keep updating (though ask remote vnc server send full update every time, then, server break "image" various rects before sending them). rdp clients quite bit more complicated (see freerdp project).

your goal appears remote access without microsoft rdp available you. given case, need vnc service (like tightvnc) on remote desktop, , vnc client (like tightvnc's client) on system you'll connecting from. barring network configuration, should go.