1XGetWindowAttributes(3) XLIB FUNCTIONS XGetWindowAttributes(3)
2
6 XGetWindowAttributes, XGetGeometry, XWindowAttributes - get current
7 window attribute or geometry and current window attributes structure
8
10 Status XGetWindowAttributes(Display *display, Window w, XWindowAt‐
11 tributes *window_attributes_return);
12 Status XGetGeometry(Display *display, Drawable d, Window *root_return,
14 int *x_return, int *y_return, unsigned int *width_return,
15 unsigned int *height_return, unsigned int *border_width_return,
16 unsigned int *depth_return);
17
19 border_width_return
20 Returns the border width in pixels.
21 d Specifies the drawable, which can be a window or a pixmap.
23 depth_return
25 Returns the depth of the drawable (bits per pixel for the
26 object).
27 display Specifies the connection to the X server.
29 root_return
31 Returns the root window.
32 w Specifies the window whose current attributes you want to
34 obtain.
35 width_return
37 height_return
38 Return the drawable's dimensions (width and height).
39 window_attributes_return
41 Returns the specified window's attributes in the XWindowAt‐
42 tributes structure.
43 x_return
45 y_return Return the x and y coordinates that define the location of
46 the drawable. For a window, these coordinates specify the
47 upper-left outer corner relative to its parent's origin. For
48 pixmaps, these coordinates are always zero.
49
51 The XGetWindowAttributes function returns the current attributes for
52 the specified window to an XWindowAttributes structure. It returns a
53 nonzero status on success; otherwise, it returns a zero status.
54 XGetWindowAttributes can generate BadDrawable and BadWindow errors.
56 The XGetGeometry function returns the root window and the current geom‐
58 etry of the drawable. The geometry of the drawable includes the x and
59 y coordinates, width and height, border width, and depth. These are
60 described in the argument list. It is legal to pass to this function a
61 window whose class is InputOnly. It returns a nonzero status on suc‐
62 cess; otherwise, it returns a zero status.
63
65 The XWindowAttributes structure contains:
66 typedef struct {
68 int x, y; /* location of window */
69 int width, height; /* width and height of window */
70 int border_width; /* border width of window */
71 int depth; /* depth of window */
72 Visual *visual; /* the associated visual structure */
73 Window root; /* root of screen containing window */
74 int class; /* InputOutput, InputOnly*/
75 int bit_gravity; /* one of the bit gravity values */
76 int win_gravity; /* one of the window gravity values */
77 int backing_store; /* NotUseful, WhenMapped, Always */
78 unsigned long backing_planes;/* planes to be preserved if possible */
79 unsigned long backing_pixel;/* value to be used when restoring planes */
80 Bool save_under; /* boolean, should bits under be saved? */
81 Colormap colormap; /* color map to be associated with window */
82 Bool map_installed; /* boolean, is color map currently installed*/
83 int map_state; /* IsUnmapped, IsUnviewable, IsViewable */
84 long all_event_masks; /* set of events all people have interest in*/
85 long your_event_mask; /* my event mask */
86 long do_not_propagate_mask;/* set of events that should not propagate */
87 Bool override_redirect; /* boolean value for override-redirect */
88 Screen *screen; /* back pointer to correct screen */
89 } XWindowAttributes;
90 The x and y members are set to the upper-left outer corner relative to
92 the parent window's origin. The width and height members are set to
93 the inside size of the window, not including the border. The bor‐
94 der_width member is set to the window's border width in pixels. The
95 depth member is set to the depth of the window (that is, bits per pixel
96 for the object). The visual member is a pointer to the screen's asso‐
97 ciated Visual structure. The root member is set to the root window of
98 the screen containing the window. The class member is set to the win‐
99 dow's class and can be either InputOutput or InputOnly.
100 The bit_gravity member is set to the window's bit gravity and can be
102 one of the following:
103 ForgetGravity EastGravity
105 NorthWestGrav‐ SouthWestGrav‐
106 ity ity
107 NorthGravity SouthGravity
108 NorthEastGrav‐ SouthEastGrav‐
109 ity ity
110 WestGravity StaticGravity
111 CenterGravity
112 The win_gravity member is set to the window's window gravity and can be
114 one of the following:
115 UnmapGravity EastGravity
117 NorthWestGrav‐ SouthWestGrav‐
118 ity ity
119 NorthGravity SouthGravity
120 NorthEastGrav‐ SouthEastGrav‐
121 ity ity
122 WestGravity StaticGravity
123 CenterGravity
124 For additional information on gravity, see section 3.3.
126 The backing_store member is set to indicate how the X server should
128 maintain the contents of a window and can be WhenMapped, Always, or
129 NotUseful. The backing_planes member is set to indicate (with bits set
130 to 1) which bit planes of the window hold dynamic data that must be
131 preserved in backing_stores and during save_unders. The backing_pixel
132 member is set to indicate what values to use for planes not set in
133 backing_planes.
134 The save_under member is set to True or False. The colormap member is
136 set to the colormap for the specified window and can be a colormap ID
137 or None. The map_installed member is set to indicate whether the col‐
138 ormap is currently installed and can be True or False. The map_state
139 member is set to indicate the state of the window and can be IsUn‐
140 mapped, IsUnviewable, or IsViewable. IsUnviewable is used if the win‐
141 dow is mapped but some ancestor is unmapped.
142 The all_event_masks member is set to the bitwise inclusive OR of all
144 event masks selected on the window by all clients. The your_event_mask
145 member is set to the bitwise inclusive OR of all event masks selected
146 by the querying client. The do_not_propagate_mask member is set to the
147 bitwise inclusive OR of the set of events that should not propagate.
148 The override_redirect member is set to indicate whether this window
150 overrides structure control facilities and can be True or False. Win‐
151 dow manager clients should ignore the window if this member is True.
152 The screen member is set to a screen pointer that gives you a back
154 pointer to the correct screen. This makes it easier to obtain the
155 screen information without having to loop over the root window fields
156 to see which field matches.
157
159 BadDrawable
160 A value for a Drawable argument does not name a defined Win‐
161 dow or Pixmap.
162 BadWindow A value for a Window argument does not name a defined Window.
164
166 XQueryPointer(3), XQueryTree(3)
167 Xlib - C Language X Interface
168X Version 11 libX11 1.3.4 XGetWindowAttributes(3)