1Tk_GetVRootGeometry(3)       Tk Library Procedures      Tk_GetVRootGeometry(3)
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NAME

8       Tk_GetVRootGeometry - Get location and size of virtual root for window
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SYNOPSIS

11       #include <tk.h>
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13       Tk_GetVRootGeometry(tkwin, xPtr, yPtr, widthPtr, heightPtr)
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ARGUMENTS

16       Tk_Window tkwin (in)              Token  for  window whose virtual root
17                                         is to be queried.
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19       int xPtr (out)                    Points to word in which to  store  x-
20                                         offset of virtual root.
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22       int yPtr (out)                    Points  to  word in which to store y-
23                                         offset of virtual root.
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25       int widthPtr (out)                Points to  word  in  which  to  store
26                                         width of virtual root.
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28       int heightPtr (out)               Points  to  word  in  which  to store
29                                         height of virtual root.
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DESCRIPTION

33       Tk_GetVRootGeometry returns geometry information about the virtual root
34       window associated with tkwin.  The “associated” virtual root is the one
35       in which tkwin's nearest top-level ancestor (or tkwin itself if it is a
36       top-level window) has been reparented by the window manager.  This win‐
37       dow is identified by a __SWM_ROOT or __WM_ROOT property placed  on  the
38       top-level  window  by  the  window manager.  If tkwin is not associated
39       with a virtual root (e.g.  because the window manager does not use vir‐
40       tual  roots)  then  *xPtr  and *yPtr will be set to 0 and *widthPtr and
41       *heightPtr will be set to the dimensions of the screen  containing  tk‐
42       win.
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KEYWORDS

45       geometry, height, location, virtual root, width, window manager
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49Tk                                    4.0               Tk_GetVRootGeometry(3)