error_window_is_present

	status.i4.v = error_window_is_present()

	This routine determines whether or not an error display window
	is present.

	This function returns ACNET status values as follows:

	TRUE			error display window is present
	FALSE			error display window is not present

	This function requires the following include files:

	cbslib_h, cnsparam_h

	Related functions:

	error_init(_c), error_is_occluded, error_display(_c), error_printf_c,
	error_message(_c), error_mprintf_c, error_colored_message_c,
	error_cmprintf_c, error_erase, error_close, intro_error

	C/C++ usage:

	int	status;

	status = error_window_is_present();