This function obtains a copy of the Window List data for a specific application.

#define INCL_WINSWITCHLIST /* Or use INCL_WIN, INCL_PM, */
#include <os2.h>

HSWITCH     hswitchSwitch;     /*  Handle to the Window List entry. */
PSWCNTRL    pswctlSwitchData;  /*  Switch control data. */
ULONG       rc;                /*  Return code. */

rc = WinQuerySwitchEntry(hswitchSwitch, pswctlSwitchData);