- User Guide
This is not the most recent version. Read the latest documentation.
By default, when a connection is established:
• VNC Viewer does not scale the host computer’s desktop. Instead, scroll bars are added to the window if the desktop is too large.
• The VNC Viewer window is set to a particular size.
• VNC Viewer displays the host computer’s desktop in a color quality appropriate to the network connection speed.
• Your mouse and keyboard are set to interact with the client and host computers in particular ways.
• The VNC Viewer toolbar is accessible (from the top center hot area).
• The VNC Viewer shortcut menu is accessible (by pressing F8).
You can change these defaults by configuring options on the Display tab of the VNC Viewer - Options dialog. More on this dialog.
You can scale the host computer’s desktop, which might make it easier to navigate and to use.
To scale the desktop to the size of the VNC Viewer window, choose Scale to window size.
To scale the desktop to a custom size, choose Custom scaling, and specify a width and height. Turn on Preserve aspect ratio to automatically calculate a height for a given width, and vice versa. Note that the VNC Viewer window inherits these dimensions and cannot be made bigger using the mouse (only smaller).
Changing the size of the VNC Viewer window
You can use the mouse to resize the VNC Viewer window in the expected way for the platform of the client computer. The window’s Application buttons (Minimize, Maximize, and Close) also work in the expected way.
To toggle full screen mode on and off, click the Full Screen Mode toolbar button. Note scroll bars are not displayed in this mode; bump the mouse against an edge to scroll.
You may be able to enhance the performance of the connection by reducing the number of colors used to display the host computer’s desktop. To do this, turn off Adapt to network speed, and move the slider towards Best compression.
Conversely, you may be able to improve the picture quality by increasing the number of colors. To do this, move the slider towards Best quality. Note that sending more pixel information across the network may have an adverse effect on performance.
Note: The information in this section applies to VNC Viewer for Windows and Mac OS X only.
You can emulate buttons missing because your mouse has fewer buttons than the host computer’s mouse.
For example, if your mouse only has two buttons, turn on Enable 3-button mouse emulation. To emulate the missing middle button, click the left and right mouse buttons simultaneously. Under Mac OS X, if your mouse only has one button, you can also, or alternatively, turn on Enable 2-button mouse emulation. To emulate the missing right button, hold down the CTRL key and press the button.
Note these options are on the Inputs tab.
Note: The information in this section applies to VNC Viewer for Windows only.
By default, and with the exception of CTRL-ALT-DELETE and the function key used to open the shortcut menu, key presses affect the host computer and not the client. To reverse this behavior for the application-level keys listed below, turn off Pass special keys directly to VNC Server. Note this option is on the Inputs tab.
Affected keys/combinations: WINDOWS (also known as START), PRINT SCREEN, ALT-TAB, ALT-ESCAPE, CTRL-ESCAPE.
You can disable the VNC Viewer toolbar. More on this toolbar. To do this, turn off Enable toolbar.
Note that if you disable the VNC Viewer shortcut menu as well you will not be able to access the VNC Viewer toolbar again while the current connection is in progress.
You can disable the VNC Viewer shortcut menu. More on this menu. To do this, select none from the Menu key dropdown. Note this option is on the Inputs tab.
Note that if you disable the VNC Viewer toolbar as well you will not be able to access the VNC Viewer shortcut menu again while the current connection is in progress.
You can change the function key used to open the shortcut menu. To do this, select a function key from the Menu key dropdown. Note this option is on the Inputs tab. The shortcut menu updates to reflect the fact that you can no longer press the chosen key to send a command to the host computer.