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DMXChangeDesktopAttributes(3)               DragonFly Library Functions Manual

NAME
       DMXChangeDesktopAttributes - change global bounding box

SYNOPSIS
       #include <X11/extensions/dmxext.h>

       int DMXChangeDesktopAttributes(Display *dpy,
                                      unsigned int mask,
                                      DMXDesktopAttributes *attr);

DESCRIPTION
       DMXChangeDesktopAttributes() resizes the bounding box of the whole
       screen when using the Xinerama extension.  Otherwise, it has no effect
       on the screen layout.  An attribute mask is placed in mask and the
       attributes to change are placed in attr.

       The values that are used to compute mask are as follows:

       DMXDesktopWidth
       DMXDesktopHeight
       DMXDesktopShiftX
       DMXDesktopShiftY

       The DMXDesktopAttributes structure is:

       typedef struct {
           unsigned int width;
           unsigned int height;
           int          shiftX;
           int          shiftY;
       } DMXDesktopAttributes;

       width  and  height specify the new width and height for the bounding
       box.  shiftX  and  shiftY specify where the Xinerama origin will be
       placed with respect to the origin of the new bounding box.  This allows
       the left and upper edges of the bounding box to be changed without
       changing the visual position of the windows on the desktop.  If width
       or  height is not specified, the current values will be used.  If
       shiftX  or  shiftY is not specified, 0 will be used.

       All coordinates are in the global DMX coordinate system.  If Xinerama
       is not active, an error will be generated.

RETURN VALUE
       DMXChangeDesktopAttributes() will return 0 on success, DmxBadXinerama
       if Xinerama is not active, DmxBadValue if the size of the bounding box
       is too large, and DmxBadReply if there was a protocol error.

       DMXChangeDesktopAttributes() can generate BadLength (if the request is
       malformed, which should never happen when using this library
       interface), and BadValue (if any values are out of range).

SEE ALSO
       DMXGetDesktopAttributes(3), DMX(3), Xdmx(1)

X Version 11                     libdmx 1.1.3    DMXChangeDesktopAttributes(3)