China DOS Union

Experts,

I have a question for all of you experts: how can I display Chinese information only in part of the screen, showing Chinese prompt messages locally without using full-screen graphics? I wrote a full-screen display program, but it cannot meet my project requirements. My program is as follows:
#include
#include
#include
#include
#include
#include
#include
#include
#define ROW 2
#define COL 2
void main(void)
{
int x,y,keyx;
char *tape="Please load the corresponding tape into the tape drive for testing, then press any key to continue";
char *cd="Please insert the test CD into the CD-ROM drive for testing, then press any key to continue";
char *fd="Please insert any floppy disk into the floppy drive for testing, then press any key to continue";
char *cyclops="Please insert the small white loop into the cyclops on the panel for testing, then press any key to continue";
char *fpnllcd="Please check whether the LCD screen on the panel displays normally, whether the characters are normal, and whether there are any error records. After pressing any key, answer yes or no";
char *cmdline=getenv("ITEST";
char *s="ABCD";
FILE *fp;
char buffer;
register m,n,i,j,k;
unsigned char qh,wh;
unsigned long offset;
int gd=DETECT,gm;
registerbgidriver(EGAVGA_driver);
initgraph(&gd,&gm,"";
while(bioskey(1)!=0)
{
keyx=bioskey(0);
if(isalnum(keyx & 0xFF))
printf("%c\n",keyx);
else
printf("%#02x\n",keyx);
}
if ((fp=fopen("hzk16","rb")==NULL)
{
printf("Can't open hzk16,Please add it";
getch();
closegraph();
exit(0);
}
x=20; y=100;
if(strcmp(cmdline,"TAPE"==0) strcpy(s,tape);
if(strcmp(cmdline,"CD"==0) strcpy(s,cd);
if(strcmp(cmdline,"FD"==0) strcpy(s,fd);
if(strcmp(cmdline,"CYCLOPS"==0) strcpy(s,cyclops);
if(strcmp(cmdline,"FPNLLCD"==0) strcpy(s,fpnllcd);
while(*s)
{
qh=*(s)-0xa0;
wh=*(s+1)-0xa0;
offset=(94*(qh-1)+(wh-1))*32L;
fseek(fp,offset,SEEK_SET);
fread(buffer,32,1,fp);
for (i=0;i<16;i++)
for(n=0;n<ROW;n++)
for(j=0;j<2;j++)
for(k=0;k<8;k++)
for(m=0;m>(7-k))&0x1)!=NULL)
putpixel(x+8*j*COL+k*COL+m,y+i*ROW+n,WHITE);
s+=2;
x+=30;
if(x>540){
y+=100;
x=20;
}
}
beep:
sound(800);delay(4000);
if(!getch()) goto beep;
nosound();
fclose(fp);
closegraph();
}

Can any expert help me take a look?

I wonder whether it can be changed into something like a dialog box in Windows programming, or like a message box.

Thanks!