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Tk-804.036
River stage three • 168 direct dependents • 183 total dependents
/ Tk_SetWindowVisual
Security Advisories (4)
CVE-2007-4769 (2008-01-09)

The regular expression parser in TCL before 8.4.17, as used in PostgreSQL 8.2 before 8.2.6, 8.1 before 8.1.11, 8.0 before 8.0.15, and 7.4 before 7.4.19, allows remote authenticated users to cause a denial of service (backend crash) via an out-of-bounds backref number.

CVE-2018-25032 (2022-03-25)

zlib before 1.2.12 allows memory corruption when deflating (i.e., when compressing) if the input has many distant matches.

CVE-2011-3045 (2012-03-22)

Integer signedness error in the png_inflate function in pngrutil.c in libpng before 1.4.10beta01, as used in Google Chrome before 17.0.963.83 and other products, allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted PNG file, a different vulnerability than CVE-2011-3026.

CVE-2016-10087 (2017-01-30)

The png_set_text_2 function in libpng 0.71 before 1.0.67, 1.2.x before 1.2.57, 1.4.x before 1.4.20, 1.5.x before 1.5.28, and 1.6.x before 1.6.27 allows context-dependent attackers to cause a NULL pointer dereference vectors involving loading a text chunk into a png structure, removing the text, and then adding another text chunk to the structure.

NAME

Tk_SetWindowVisual - change visual characteristics of window

SYNOPSIS

#include <tk.h>

int Tk_SetWindowVisual(tkwin, visual, depth, colormap)

ARGUMENTS

Tk_Window tkwin (in)

Token for window.

Visual *visual (in)

New visual type to use for tkwin.

"int" depth (in)

Number of bits per pixel desired for tkwin.

Colormap colormap (in)

New colormap for tkwin, which must be compatible with visual and depth.

DESCRIPTION

When Tk creates a new window it assigns it the default visual characteristics (visual, depth, and colormap) for its screen. Tk_SetWindowVisual may be called to change them. Tk_SetWindowVisual must be called before the window has actually been created in X (e.g. before Tk_MapWindow or Tk_MakeWindowExist has been invoked for the window). The safest thing is to call Tk_SetWindowVisual immediately after calling Tk_CreateWindow. If tkwin has already been created before Tk_SetWindowVisual is called then it returns 0 and doesn't make any changes; otherwise it returns 1 to signify that the operation completed successfully.

Note: Tk_SetWindowVisual should not be called if you just want to change a window's colormap without changing its visual or depth; call Tk_SetWindowColormap instead.

KEYWORDS

colormap, depth, visual