DMXChangeDesktopAttributes (3)
Leading comments
Copyright 2004 Red Hat Inc., Durham, North Carolina. All Rights Reserved. Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation on the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the followin...
NAME
DMXChangeDesktopAttributes - change global bounding boxSYNOPSIS
#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).