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       XParseGeometry, XWMGeometry - parse window geometry


       int   XParseGeometry(char   *parsestring,  int  *x_return,  int  *y_return,  unsigned  int
              *width_return, unsigned int *height_return);

       int XWMGeometry(Display *display, int screen, char *user_geom,  char  *def_geom,  unsigned
              int bwidth, XSizeHints *hints, int *x_return, int *y_return, int *width_return, int
              *height_return, int *gravity_return);


                 Specify the geometry specifications.

       display   Specifies the connection to the X server.

       fwidth    Specify the font height and width in pixels (increment size).

                 Specifies the string you want to parse.

       screen    Specifies the screen.

                 Return the width and height determined.

       yadder    Specify additional interior padding needed in the window.

       y_return  Return the x and y offsets.

       bwidth    Specifies the border width.

       hints     Specifies the size hints for the window in its normal state.

       def_geom  Specifies the application's default geometry or NULL.

                 Returns the window gravity.

       user_geom Specifies the user-specified geometry or NULL.


       By convention, X applications use a standard string to indicate window size and placement.
       XParseGeometry  makes it easier to conform to this standard because it allows you to parse
       the standard window geometry.  Specifically, this function lets you parse strings  of  the


       The  fields  map  into the arguments associated with this function.  (Items enclosed in <>
       are integers, items in [] are optional, and items enclosed in {} indicate “choose one of.”
       Note  that  the brackets should not appear in the actual string.)  If the string is not in
       the Host Portable Character Encoding, the result is implementation-dependent.

       The XParseGeometry function returns a bitmask that indicates  which  of  the  four  values
       (width,  height, xoffset, and yoffset) were actually found in the string and whether the x
       and y values are negative.  By convention, -0 is not equal to +0, because the  user  needs
       to  be  able  to say “position the window relative to the right or bottom edge.”  For each
       value found, the corresponding argument  is  updated.   For  each  value  not  found,  the
       argument  is  left  unchanged.   The  bits  are represented by XValue, YValue, WidthValue,
       HeightValue, XNegative, or YNegative and are defined in They will be set whenever  one  of
       the values is defined or one of the signs is set.

       If  the  function returns either the XValue or YValue flag, you should place the window at
       the requested position.

       The XWMGeometry function combines any geometry information (given in the  format  used  by
       XParseGeometry)  specified by the user and by the calling program with size hints (usually
       the ones to be stored in WM_NORMAL_HINTS) and returns  the  position,  size,  and  gravity
       NorthEastGravity, SouthEastGravity, or SouthWestGravity) that describe the window.  If the
       base size is not set in the XSizeHints  structure,  the  minimum  size  is  used  if  set.
       Otherwise,  a  base  size  of  zero  is  assumed.   If no minimum size is set in the hints
       structure, the base size is used.  A mask (in the form returned  by  XParseGeometry)  that
       describes  which  values  came from the user specification and whether or not the position
       coordinates are relative to the right and bottom  edges  is  returned.   Note  that  these
       coordinates will have already been accounted for in the x_return and y_return values.

       Note  that  invalid  geometry  specifications  can  cause  a width or height of zero to be
       returned.   The  caller  may  pass  the  address  of  the  hints  win_gravity   field   as
       gravity_return to update the hints directly.


       Xlib - C Language X Interface