conio.h相关的问题

printf("\x1B[%d;%df", y, x);这种用"["转义的表达方式是标准C语言支持的吗？
附上C4中<conio.h>源代码
/*
*conio.h
*Author: Jakash3
*/
#include <stdio.h>
#include <unistd.h>
#include <termios.h>
#include <sys/select.h>
void terminal_lnbuf(int yn) {
struct termios oldt, newt;
tcgetattr(0, &oldt);
newt = oldt;
if (!yn) newt.c_lflag &= ~ICANON;
else newt.c_lflag |= ICANON;
tcsetattr(0, TCSANOW, &newt);
}
void terminal_echo(int yn) {
struct termios oldt, newt;
tcgetattr(0, &oldt);
newt = oldt;
if (!yn) newt.c_lflag &= ~ECHO;
else newt.c_lflag |= ECHO;
tcsetattr(0, TCSANOW, &newt);
}
void gotoxy(int x, int y) { printf("\x1B[%d;%df", y, x); }
void _gotoxy(int x,int y) {gotoxy(x,y);}
void clrscr() { printf("\x1B[2J\x1B[0;0f"); }
void _clrscr() {clrscr();}
int getch() {
register int ch;
terminal_lnbuf(0);
terminal_echo(0);
ch = getchar();
terminal_lnbuf(1);
terminal_echo(1);
return ch;
}
int _getch() {return getch();}
int getche() {
register int ch;
terminal_lnbuf(0);
ch = getchar();
terminal_lnbuf(1);
return ch;
}
int _getche() {return getche();}
int kbhit() {
register int ret;
fd_set fds;
terminal_lnbuf(0);
terminal_echo(0);
struct timeval tv;
tv.tv_sec = 0;
tv.tv_usec = 0;
FD_ZERO(&fds);
FD_SET(0, &fds);
select(1, &fds, 0, 0, &tv);
ret = FD_ISSET(0, &fds);
terminal_lnbuf(1);
terminal_echo(1);
return ret;
}
int _kbhit() {return kbhit();}