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WindowId(3)               Tk Library Procedures              WindowId(3)




NAME

       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,  Tk_Interp   -  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)

       int
       Tk_IsMapped(tkwin)

       int
       Tk_IsTopLevel(tkwin)

       int
       Tk_ReqWidth(tkwin)

       int
       Tk_ReqHeight(tkwin)

       int
       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)

       Tcl_Interp *
       Tk_Interp(tkwin)


ARGUMENTS

       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_Interp  returns  the Tcl interpreter associated with a tkwin or NULL
       if there is an error.

       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
       refers to the upper-left pixel in the window, or its border if there is
       one.   The  width and height information refers to the interior size of
       the window, not including any border.  Tk_Changes returns a pointer  to
       a  structure  containing  all of the above information plus a few other
       fields.  Tk_Attributes returns a  pointer  to  an  XSetWindowAttributes
       structure  describing all of the attributes of the tkwin's window, such
       as background pixmap, event mask, and so on (Tk keeps track of all this
       information  as  it is changed by the application).  Note: it is essen-
       tial that applications use Tk procedures like  Tk_ResizeWindow  instead
       of X procedures like XResizeWindow, so that Tk can keep its data struc-
       tures up-to-date.

       Tk_IsContainer returns a non-zero value if tkwin is  a  container,  and
       that some other application may be embedding itself inside tkwin.

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

       Tk_IsMapped returns a non-zero value if tkwin is  mapped  and  zero  if
       tkwin is not 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  is
       not 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                       WindowId(3)

tk 8.6.0 - Generated Sat Jan 19 10:40:03 CST 2013
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