hwnd (HWND) - input

Window handle of an application.

Window handle of an application running in the OS/2 session for which the Window List handle is required.

NULLHANDLE

Application is not an OS/2 application
Other
Window handle of an application.

idProcess (PID) - input

Process identity of the application.

hswitchSwitch (HSWITCH) - returns

Switch list handle for the specified application.

NULLHANDLE

Application is not in the switch list, or an error occurred
Other
Switch list handle.

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