XLaunch WizardXLaunch is a wizard to make starting Xming sessions easy.
You can just simply start the X server and run X clients later by hand, but starting XDMCP or one X client automatically is provided along with an interactive XDMCP host finder and chooser. By using the 'Force run' option just a client can be started for display on an existing X server.
The window size can be altered using the -screen parameter, for example enter
-screen 0 1024x768+125+100@1on the Additional parameters page of this wizard for a 1024x768 window size, offset 125,100 as screen scr_num 0 on the 1st monitor (the default).
Shadow DirectDraw4 (-engine 4) is used as default in this mode enabling the -depth and -refresh rate to be changed and so it can be used at -depth 8 for rendering ancient remote hosts that only have 8-bit colour.
If this field is left blank the first unused display-number (i.e. server number) is automatically found and the server plus any client opened with it. Conventionally X servers have to be explicitly given a display-number or it always defaults to 0. If multiple X servers are to run simultaneously on a host, each must have a unique display-number. Hence why this automatic allocation feature can be useful, but it is only available via XLaunch as by itself Xming behaves conventionally. Note: automatic display-number allocation slows server start a little.
The phrase 'display' is usually used to refer to a collection of physical monitors (and screens, see below) that share a common keyboard and mouse.
In X a multiple screen display may be implemented in several ways. There might be two physical monitors, linked to form a single display or two screens might be defined as different ways of using the same physical monitor. By default, windows are always placed on screen 0 (scr_num is 0) but you can place a client window on screen 1 etc by specifying the screen number in the -display option when starting the client, for example
xeyes -display :0.1
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