View source for WinQueryWindowProcess

This function obtains the process identity and thread identity of the thread that created a window.

==Syntax==
 WinQueryWindowProcess(hwnd, ppid, ptid)

==Parameters==
;hwnd (HWND) - input:Window handle.
;ppid (PPID) - output:Process identity of the thread that created the window.
;ptid (PTID) - output:Thread identity of the thread that created the window.

==Returns==
;rc (BOOL) - returns:Success indicator.
:;TRUE:Successful completion
:;FALSE:Error occurred.

==Errors==
Possible returns from WinGetLastError
;PMERR_INVALID_HWND (0x1001):An invalid window handle was specified.

==Example Code==
This example shows how to query a window's process and use that information to add a switch entry window.
<pre>
#define INCL_WINWINDOWMGR
#define INCL_WINSYS
#include <os2.h>

HWND     hwndFrame;           /* window handle. */
SWCNTRL  swctl;
PID      pid;
TID      tid;
HSWITCH  hsw;
char     szTitle[] = "app.exe";

  WinQueryWindowProcess( hwndFrame, &pid, &tid);
  swctl.hwnd  = hwndFrame;
  swctl.idProcess = pid;
  strcpy( swctl.szSwtitle, szTitle);
  hsw = WinAddSwitchEntry( &swctl);
</pre>

==Related Functions==
* [[WinEnableWindow]]
* [[WinIsThreadActive]]
* [[WinIsWindow]]
* [[WinIsWindowEnabled]]
* [[WinQueryDesktopWindow]]
* [[WinQueryObjectWindow]]
* [[WinQueryWindowDC]]
* [[WinQueryWindowRect]]
* [[WinWindowFromDC]]
* [[WinWindowFromID]]
* [[WinWindowFromPoint]]
[[Category:Win]]