XChangeWindowAttributes, XSetWindowBackground, XSetWindowBackgroundPixmap,
  XSetWindowBorder, XSetWindowBorderPixmap, XSetWindowColormap - change window
  attributes
int XChangeWindowAttributes(Display *display, Window
    w, unsigned long valuemask, XSetWindowAttributes
    *attributes);
int XSetWindowBackground(Display *display, Window
    w, unsigned long background_pixel);
int XSetWindowBackgroundPixmap(Display *display, Window
    w, Pixmap background_pixmap);
int XSetWindowBorder(Display *display, Window w,
    unsigned long border_pixel);
int XSetWindowBorderPixmap(Display *display, Window
    w, Pixmap border_pixmap);
int XSetWindowColormap(Display *display, Window
    w, Colormap colormap);
  - attributes
- Specifies the structure from which the values (as specified by the value
      mask) are to be taken. The value mask should have the appropriate bits set
      to indicate which attributes have been set in the structure.
- background_pixel
- Specifies the pixel that is to be used for the background.
- background_pixmap
- Specifies the background pixmap, ParentRelative, or
    None.
- border_pixel
- Specifies the entry in the colormap.
- border_pixmap
- Specifies the border pixmap or CopyFromParent.
- display
- Specifies the connection to the X server.
- valuemask
- Specifies which window attributes are defined in the attributes argument.
      This mask is the bitwise inclusive OR of the valid attribute mask bits. If
      valuemask is zero, the attributes are ignored and are not referenced.
- w
- Specifies the window.
- colormap
- Specifies the colormap.
Depending on the valuemask, the XChangeWindowAttributes function uses the
  window attributes in the XSetWindowAttributes structure to change the
  specified window attributes. Changing the background does not cause the window
  contents to be changed. To repaint the window and its background, use
  XClearWindow. Setting the border or changing the background such that
  the border tile origin changes causes the border to be repainted. Changing the
  background of a root window to None or ParentRelative restores
  the default background pixmap. Changing the border of a root window to
  CopyFromParent restores the default border pixmap. Changing the
  win-gravity does not affect the current position of the window. Changing the
  backing-store of an obscured window to WhenMapped or Always, or
  changing the backing-planes, backing-pixel, or save-under of a mapped window
  may have no immediate effect. Changing the colormap of a window (that is,
  defining a new map, not changing the contents of the existing map) generates a
  ColormapNotify event. Changing the colormap of a visible window may
  have no immediate effect on the screen because the map may not be installed
  (see XInstallColormap). Changing the cursor of a root window to
  None restores the default cursor. Whenever possible, you are encouraged
  to share colormaps.Multiple clients can select input on the same window. Their event
    masks are maintained separately. When an event is generated, it is reported
    to all interested clients. However, only one client at a time can select for
    SubstructureRedirectMask, ResizeRedirectMask, and
    ButtonPressMask. If a client attempts to select any of these event
    masks and some other client has already selected one, a BadAccess
    error results. There is only one do-not-propagate-mask for a window, not one
    per client.
XChangeWindowAttributes can generate BadAccess,
    BadColor, BadCursor, BadMatch, BadPixmap,
    BadValue, and BadWindow errors.
The XSetWindowBackground function sets the background of
    the window to the specified pixel value. Changing the background does not
    cause the window contents to be changed. XSetWindowBackground uses a
    pixmap of undefined size filled with the pixel value you passed. If you try
    to change the background of an InputOnly window, a BadMatch
    error results.
XSetWindowBackground can generate BadMatch and
    BadWindow errors.
The XSetWindowBackgroundPixmap function sets the background
    pixmap of the window to the specified pixmap. The background pixmap can
    immediately be freed if no further explicit references to it are to be made.
    If ParentRelative is specified, the background pixmap of the window's
    parent is used, or on the root window, the default background is restored.
    If you try to change the background of an InputOnly window, a
    BadMatch error results. If the background is set to None, the
    window has no defined background.
XSetWindowBackgroundPixmap can generate BadMatch,
    BadPixmap, and BadWindow errors.
The XSetWindowBorder function sets the border of the window
    to the pixel value you specify. If you attempt to perform this on an
    InputOnly window, a BadMatch error results.
XSetWindowBorder can generate BadMatch and
    BadWindow errors.
The XSetWindowBorderPixmap function sets the border pixmap
    of the window to the pixmap you specify. The border pixmap can be freed
    immediately if no further explicit references to it are to be made. If you
    specify CopyFromParent, a copy of the parent window's border pixmap
    is used. If you attempt to perform this on an InputOnly window, a
    BadMatch error results.
XSetWindowBorderPixmap can generate BadMatch,
    BadPixmap, and BadWindow errors.
The XSetWindowColormap function sets the specified colormap
    of the specified window. The colormap must have the same visual type as the
    window, or a BadMatch error results.
XSetWindowColormap can generate BadColor,
    BadMatch, and BadWindow errors.
  - BadAccess
- A client attempted to free a color map entry that it did not already
      allocate.
- BadAccess
- A client attempted to store into a read-only color map entry.
- BadColor
- A value for a Colormap argument does not name a defined Colormap.
- BadCursor
- A value for a Cursor argument does not name a defined Cursor.
- BadMatch
- Some argument or pair of arguments has the correct type and range but
      fails to match in some other way required by the request.
- BadMatch
- An InputOnly window locks this attribute.
- BadPixmap
- A value for a Pixmap argument does not name a defined Pixmap.
- BadValue
- Some numeric value falls outside the range of values accepted by the
      request. Unless a specific range is specified for an argument, the full
      range defined by the argument's type is accepted. Any argument defined as
      a set of alternatives can generate this error.
- BadWindow
- A value for a Window argument does not name a defined Window.
XConfigureWindow(3), XCreateWindow(3), XDestroyWindow(3), XInstallColormap(3),
  XMapWindow(3), XRaiseWindow(3), XUnmapWindow(3)
Xlib - C Language X Interface