Tk_SetGrid (3)
control the grid for interactive resizing
SYNOPSIS
#include <tk.h>
Tk_SetGrid(tkwin, reqWidth, reqHeight, widthInc, heightInc)
Tk_UnsetGrid(tkwin)
ARGUMENTS
Tk_Window heightInc
Tk_Window tkwin in
Token for window.
int reqWidth in
Width in grid units that corresponds to the pixel dimension tkwin
has requested via Tk_GeometryRequest.
int reqHeight in
Height in grid units that corresponds to the pixel dimension tkwin
has requested via Tk_GeometryRequest.
int widthInc in
Width of one grid unit, in pixels.
int heightInc in
Height of one grid unit, in pixels.
DESCRIPTION
Tk_SetGrid turns on gridded geometry management for tkwin's
toplevel window and specifies the geometry of the grid.
Tk_SetGrid is typically invoked by a widget when its setGrid
option is true.
It restricts interactive resizing of tkwin's toplevel window so
that the space allocated to the toplevel is equal to its requested
size plus or minus even multiples of widthInc and heightInc.
Furthermore, the reqWidth and reqHeight values are
passed to the window manager so that it can report the window's
size in grid units during interactive resizes.
If tkwin's configuration changes (e.g., the size of a grid unit
changes) then the widget should invoke Tk_SetGrid again with the new
information.
Tk_UnsetGrid cancels gridded geometry management for
tkwin's toplevel window.
For each toplevel window there can be at most one internal window
with gridding enabled.
If Tk_SetGrid or Tk_UnsetGrid is invoked when some
other window is already controlling gridding for tkwin's
toplevel, the calls for the new window have no effect.
See the wm manual entry for additional information on gridded geometry
management.
KEYWORDS
grid, window, window manager
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