Tk_WindowId,  Tk_Parent,  Tk_Display,  Tk_DisplayName, Tk_ScreenNumber,
       Tk_Screen, Tk_X, Tk_Y, Tk_Width, Tk_Height, Tk_Changes,  Tk_Attributes,
       Tk_IsContainer, Tk_IsEmbedded, Tk_IsMapped, Tk_IsTopLevel, Tk_ReqWidth,
       Tk_ReqHeight, Tk_MinReqWidth,  Tk_MinReqHeight,  Tk_InternalBorderLeft,
       Tk_InternalBorderRight,  Tk_InternalBorderTop, Tk_InternalBorderBottom,
       Tk_Visual, Tk_Depth, Tk_Colormap   -  retrieve  information  from  Tk's
       local data structure

SYNOPSIS

       #include <tk.h>

       Window
       Tk_WindowId(tkwin)

       Tk_Window
       Tk_Parent(tkwin)

       Display *
       Tk_Display(tkwin)

       CONST char *
       Tk_DisplayName(tkwin)

       int
       Tk_ScreenNumber(tkwin)

       Screen *
       Tk_Screen(tkwin)

       int
       Tk_X(tkwin)

       int
       Tk_Y(tkwin)

       int
       Tk_Width(tkwin)

       int
       Tk_Height(tkwin)

       XWindowChanges *
       Tk_Changes(tkwin)

       XSetWindowAttributes *
       Tk_Attributes(tkwin)

       int
       Tk_IsContainer(tkwin)

       int
       Tk_IsEmbedded(tkwin)
       Tk_MinReqWidth(tkwin)

       int
       Tk_MinReqHeight(tkwin)

       int
       Tk_InternalBorderLeft(tkwin)

       int
       Tk_InternalBorderRight(tkwin)

       int
       Tk_InternalBorderTop(tkwin)

       int
       Tk_InternalBorderBottom(tkwin)

       Visual *
       Tk_Visual(tkwin)

       int
       Tk_Depth(tkwin)

       Colormap
       Tk_Colormap(tkwin)

ARGUMENTS

       Tk_Window   tkwin   (in)      Token for window.
_________________________________________________________________

DESCRIPTION

       Tk_WindowId and the other names listed above are all macros that return
       fields from Tk's local data structure for tkwin.  None of these  macros
       requires  any  interaction  with the server;  it is safe to assume that
       all are fast.

       Tk_WindowId returns the X identifier for tkwin, or NULL if no X  window
       has been created for tkwin yet.

       Tk_Parent returns Tk's token for the logical parent of tkwin.  The par-
       ent is the token that was specified when tkwin was created, or NULL for
       main windows.

       Tk_Display  returns a pointer to the Xlib display structure correspond-
       ing to tkwin.   Tk_DisplayName  returns  an  ASCII  string  identifying
       tkwin's  display.   Tk_ScreenNumber returns the index of tkwin's screen
       among all the screens of tkwin's display.  Tk_Screen returns a  pointer
       to the Xlib structure corresponding to tkwin's screen.

       Tk_X,  Tk_Y,  Tk_Width,  and Tk_Height return information about tkwin's
       location within its parent and  its  size.   The  location  information

       Tk_IsEmbedded returns a non-zero value if tkwin is is not a free-stand-
       ing window, but rather is embedded in some other application.

       Tk_IsMapped  returns  a  non-zero  value if tkwin is mapped and zero if
       tkwin isn't mapped.

       Tk_IsTopLevel returns a non-zero value if tkwin is a  top-level  window
       (its X parent is the root window of the screen) and zero if tkwin isn't
       a top-level window.

       Tk_ReqWidth and Tk_ReqHeight  return  information  about  the  window's
       requested  size.  These values correspond to the last call to Tk_Geome-
       tryRequest for tkwin.

       Tk_MinReqWidth and Tk_MinReqHeight return information  about  the  win-
       dow's minimum requested size.  These values correspond to the last call
       to Tk_SetMinimumRequestSize for tkwin.

       Tk_InternalBorderLeft, Tk_InternalBorderRight, Tk_InternalBorderTop and
       Tk_InternalBorderBottom  return  the  width of one side of the internal
       border that has been requested for tkwin, or 0 if  no  internal  border
       was  requested.   The  return  value is simply the last value passed to
       Tk_SetInternalBorder or Tk_SetInternalBorderEx for tkwin.

       Tk_Visual, Tk_Depth,  and  Tk_Colormap  return  information  about  the
       visual  characteristics of a window.  Tk_Visual returns the visual type
       for the window, Tk_Depth returns the number  of  bits  per  pixel,  and
       Tk_Colormap  returns  the  current colormap for the window.  The visual
       characteristics are normally set from the  defaults  for  the  window's
       screen, but they may be overridden by calling Tk_SetWindowVisual.

KEYWORDS

       attributes, colormap, depth, display, height, geometry manager, identi-
       fier, mapped, requested size, screen, top-level, visual, width, window,
       x, y



Tk                                    8.4                       Tk_WindowId(3)