Open window on specific monitor - how?

[tobias.bauer]

hello,
i have a triple-head system with two GeforceFX 5200 and Xorg 6.9 running. now i want to tell a programm to open its window on a specific screen. my xsession gives me one desktop striped over three screens using Xinerama.

but the only way i know is to use " :0.0 ", but this is my xsession (all three monitors), so it is opening its window on "screen 0".

how can i control it to open the window on screen 1 or on screen 2 ?

[tobias.bauer]

am i right to think that ":0.1" opens me a window on screen1 ?

From the user's perspective, every X server has a display name of the form:

hostname:displaynumber.screennumber

This information is used by the application to determine how it should connect to the server and which screen it should use by default (on displays with multiple monitors):

hostname
The hostname specifies the name of the machine to which the display is physically connected. If the hostname is not given, the most efficient way of communicating to a server on the same machine will be used.
displaynumber
The phrase "display" is usually used to refer to collection of monitors that share a common keyboard and pointer (mouse, tablet, etc.). Most workstations tend to only have one keyboard, and therefore, only one display. Larger, multi-user systems, however, frequently have several displays so that more than one person can be doing graphics work at once. To avoid confusion, each display on a machine is assigned a display number (beginning at 0) when the X server for that display is started. The display number must always be given in a display name.
screennumber
Some displays share a single keyboard and pointer among two or more monitors. Since each monitor has its own set of windows, each screen is assigned a screen number (beginning at 0) when the X server for that display is started. If the screen number is not given, screen 0 will be used.

[netllama]

Assuming that you have 3 distinct X screens, then you'd have :0.0 :0.1 and :0.2.

Thanks,
Lonni