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спецификации, руководства, описания, API
Spec-Zone .ru
спецификации, руководства, описания, API
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Tk_CreateWindow(3)                          Tk Library Procedures                         Tk_CreateWindow(3)



____________________________________________________________________________________________________________

NAME
       Tk_CreateWindow,  Tk_CreateWindowFromPath,  Tk_DestroyWindow,  Tk_MakeWindowExist  - create or delete
       window

SYNOPSIS
       #include <tk.h>

       Tk_Window
       Tk_CreateWindow(interp, parent, name, topLevScreen)

       Tk_Window
       Tk_CreateAnonymousWindow(interp, parent, topLevScreen)

       Tk_Window
       Tk_CreateWindowFromPath(interp, tkwin, pathName, topLevScreen)

       Tk_DestroyWindow(tkwin)

       Tk_MakeWindowExist(tkwin)

ARGUMENTS
       Tcl_Interp *interp (out)               Tcl interpreter to use  for  error  reporting.   If  no  error
                                              occurs, then *interp is not modified.

       Tk_Window parent (in)                  Token for the window that is to serve as the logical parent of
                                              the new window.

       const char *name (in)                  Name to use for this window.  Must be unique among  all  chil-dren children
                                              dren of the same parent.

       const char *topLevScreen (in)          Has  same  format  as screenName.  If NULL, then new window is
                                              created as an internal window.  If  non-NULL,  new  window  is
                                              created  as  a  top-level  window  on screen topLevScreen.  If
                                              topLevScreen is an empty string ("") then new window  is  cre-ated created
                                              ated as top-level window of parent's screen.

       Tk_Window tkwin (in)                   Token for window.

       const char *pathName (in)              Name  of new window, specified as path name within application
                                              (e.g. .a.b.c).
____________________________________________________________________________________________________________

DESCRIPTION
       The procedures Tk_CreateWindow, Tk_CreateAnonymousWindow, and  Tk_CreateWindowFromPath  are  used  to
       create new windows for use in Tk-based applications.  Each of the procedures returns a token that can
       be used to manipulate the window in other calls to the Tk library.  If the window could not  be  cre-ated created
       ated successfully, then NULL is returned and interp->result is modified to hold an error message.

       Tk  supports  two  different  kinds of windows:  internal windows and top-level windows.  An internal
       window is an interior window of a Tk application, such as a scrollbar or menu bar or button.  A  top-level toplevel
       level  window is one that is created as a child of a screen's root window, rather than as an interior
       window, but which is logically part of some existing main window.  Examples of top-level windows  are
       pop-up menus and dialog boxes.

       New  windows  may  be created by calling Tk_CreateWindow.  If the topLevScreen argument is NULL, then
       the new window will be an internal window.  If topLevScreen is non-NULL, then the new window will  be
       a top-level window: topLevScreen indicates the name of a screen and the new window will be created as
       a child of the root window of topLevScreen.  In either case Tk will consider the new window to be the
       logical  child of parent: the new window's path name will reflect this fact, options may be specified
       for the new window under this assumption, and so on.  The only difference is that new X window for  a
       top-level  window  will  not be a child of parent's X window.  For example, a pull-down menu's parent
       would be the button-like window used to invoke it, which would in turn be a child  of  the  menu  bar
       window.  A dialog box might have the application's main window as its parent.

       Tk_CreateAnonymousWindow  differs  from  Tk_CreateWindow  in that it creates an unnamed window.  This
       window will be manipulable only using C interfaces, and will not be visible  to  Tcl  scripts.   Both
       interior windows and top-level windows may be created with Tk_CreateAnonymousWindow.

       Tk_CreateWindowFromPath  offers  an  alternate  way  of  specifying  new  windows.   In Tk_CreateWin-dowFromPath Tk_CreateWindowFromPath
       dowFromPath the new window is specified with a  token  for  any  window  in  the  target  application
       (tkwin),  plus  a  path  name for the new window.  It produces the same effect as Tk_CreateWindow and
       allows both top-level and internal windows to be created, depending on the value of topLevScreen.  In
       calls  to  Tk_CreateWindowFromPath, as in calls to Tk_CreateWindow, the parent of the new window must
       exist at the time of the call, but the new window must not already exist.

       The window creation procedures do not actually issue the command to X to create a  window.   Instead,
       they create a local data structure associated with the window and defer the creation of the X window.
       The window will actually be created by the first call  to  Tk_MapWindow.   Deferred  window  creation
       allows  various aspects of the window (such as its size, background color, etc.) to be modified after
       its creation without incurring any overhead in the X server.  When the window is finally  mapped  all
       of the window attributes can be set while creating the window.

       The  value  returned  by a window-creation procedure is not the X token for the window (it cannot be,
       since X has not been asked to create the window yet).  Instead, it is a token  for  Tk's  local  data
       structure  for  the  window.   Most of the Tk library procedures take Tk_Window tokens, rather than X
       identifiers.  The actual X window identifier can be retrieved from the local data structure using the
       Tk_WindowId macro;  see the manual entry for Tk_WindowId for details.

       Tk_DestroyWindow deletes a window and all the data structures associated with it, including any event
       handlers created with Tk_CreateEventHandler.  In addition, Tk_DestroyWindow will delete any  children
       of tkwin recursively (where children are defined in the Tk sense, consisting of all windows that were
       created with the given window as parent).  If tkwin is an internal window, then event handlers inter-ested interested
       ested  in  destroy  events are invoked immediately.  If tkwin is a top-level or main window, then the
       event handlers will be invoked later, after X has seen the request and returned an event for it.

       If a window has been created but has not been mapped, so no X window exists, it is possible to  force
       the  creation of the X window by calling Tk_MakeWindowExist.  This procedure issues the X commands to
       instantiate the window given by tkwin.


KEYWORDS
       create, deferred creation, destroy, display, internal window, screen, top-level window, window



Tk                                                   4.2                                  Tk_CreateWindow(3)

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