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dmx(3) [opendarwin man page]

DMX(3)							     Library Functions Manual							    DMX(3)

NAME
DMX - X Window System DMX (Distributed Multihead X) extension DESCRIPTION
The DMX extension provides support for communication with and control of Xdmx(1) server. Attributes of the Xdmx(1) server and of the back- end screens attached to the server can be queried and modified via this protocol. SUMMARY OF LIBRARY FUNCTIONS
The following is a summary of DMX library functions: DMXQueryExtension(3) - determine if DMX is available DMXQueryVersion(3) - determine DMX extension version DMXSync(3) - flush protocol requests between Xdmx(1) and back-end X servers DMXForceWindowCreation(3) - force immediate back-end window creation DMXGetScreenCount(3) - determine number of back-end screens DMXGetScreenAttributes(3) - determine back-end screen attributes DMXChangeScreensAttributes(3) - change back-end screen attributes DMXAddScreen(3) - attach a new back-end screen DMXRemoveScreen(3) - detach a back-end screen DMXGetWindowAttributes(3) - determine back-end window attributes DMXGetDesktopAttributes(3) - determine global bounding box DMXChangeDesktopAttributes(3) - change global bounding box DMXGetInputCount(3) - determine number of input devices DMXGetInputAttributes(3) - determine input device attributes DMXAddInput(3) - attach a new backend or console input DMXRemoveInput(3) - detach an input DMXAddBackendInput(3) - attach a new back-end input DMXAddConsoleInput(3) - attach a new console input Each of these functions is described in its own man page. SEE ALSO
Xdmx(1), xdmxconfig(1), vdltodmx(1) X Version 11 libdmx 1.1.2 DMX(3)

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DMXGetScreenAttributes(3)				     Library Functions Manual					 DMXGetScreenAttributes(3)

NAME
DMXGetScreenAttributes - determine back-end screen attributes SYNOPSIS
#include <X11/extensions/dmxext.h> Bool DMXGetScreenAttributes(Display *dpy, int screen, DMXScreenAttributes *attr); DESCRIPTION
DMXGetScreenAttributes() returns the attributes for the single DMX screen specified in screen. The DMXScreenAttributes structure is: typedef struct { char *displayName; int logicalScreen; unsigned int screenWindowWidth; unsigned int screenWindowHeight; int screenWindowXoffset; int screenWindowYoffset; unsigned int rootWindowWidth; unsigned int rootWindowHeight; int rootWindowXoffset; int rootWindowYoffset; int rootWindowXorigin; int rootWindowYorigin; } DMXScreenAttributes; displayName is the name used to open the display, either from the Xdmx(1) command-line or from the configuration file. logicalScreen is the value of the screen that that Xdmx(1) server exports to clients. When Xinerama is in use, this value is typically 0 for all values of physicalScreen. If Xinerama is in use, rootWindowXorigin and rootWindowYorigin specify where the physical screen is positioned in the global Xinerama coordinate system. Otherwise, these values are set to 0. screenWindowWidth, screenWindowHeight, screenWindowXoffset, and screenWindowYoffset are a geometry specification (see X(7x)) for the loca- tion of the DMX screen on the back-end screen. The coordinate system of the back-end display is used for these values. rootWindowWidth, rootWindowHeight, rootWindowXoffset, and rootWindowYoffset are a geometry specification (see X(7x)) for the location of the root window on the screen window. The coordinate system of the screen window is used. In most cases, the root window will have the same geometry as the DMX screen window, and will occupy the same area of the back-end display. (This would not be the case, for example, if automatic projector alignment is used.) RETURN VALUE
DMXGetScreenAttributes() returns True unless there is a protocol error. DMXGetScreenAttributes() can generate BadValue errors. SEE ALSO
DMXGetScreenCount(3), DMXChangeScreensAttributes(3), DMX(3), Xdmx(1) X Version 11 libdmx 1.1.2 DMXGetScreenAttributes(3)

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