## Tcl8.6.0/Tk8.6.0 Documentation > Tk C API, version 8.6.0 > HWNDToWindow

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### NAME

Tk_HWNDToWindow — Find Tk's window information for a Windows window

### SYNOPSIS

#include <tkPlatDecls.h>
Tk_Window
Tk_HWNDToWindow(hwnd)

### ARGUMENTS

HWND hwnd (in)
  Windows handle for the window.

### DESCRIPTION

Given a Windows HWND window identifier, this procedure returns the corresponding Tk_Window handle. If there is no Tk_Window corresponding to hwnd then NULL is returned.

### KEYWORDS

Windows window id
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