函數名: setdta

功 能: 設置磁盤傳輸區地址

用 法: void setdta(char far *dta);

程序例:

#include

#include

#include

#include

int main(void)

{

char line[80], far *save_dta;

char buffer[256] = "SETDTA test!";

struct fcb blk;

int result;

printf("Enter a file name to create:");

gets(line);

parsfnm(line, &blk, 1);

printf("%d %s\n", blk.fcb_drive, blk.fcb_name);

if (bdosptr(0x16, &blk, 0) == -1)

{

perror("Error creating file");

exit(1);

}

save_dta = getdta();

setdta(buffer);

blk.fcb_recsize = 256;

blk.fcb_random = 0L;

result = randbwr(&blk, 1);

printf("result = %d\n", result);

if (!result)

printf("Write OK\n");

else

{

perror("Disk error");

exit(1);

}

if (bdosptr(0x10, &blk, 0) == -1)

{

perror("Error closing file");

exit(1);

}

setdta(save_dta);

return 0;

}

函數名: setfillpattern

功 能: 選擇用戶定義的填充模式

用 法: void far setfillpattern(char far *upattern, int color);

程序例:

#include

#include

#include

#include

int main(void)

{

int gdriver = DETECT, gmode, errorcode;

int maxx, maxy;

char pattern[8] = {0x00, 0x70, 0x20, 0x27, 0x24, 0x24, 0x07,

0x00};

initgraph(&gdriver, &gmode,

"");

errorcode = graphresult();

if (errorcode != grOk)

{

printf("Graphics error: %s\n", grapherrormsg(errorcode));

printf("Press any key to halt:");

getch();

exit(1);

}

maxx = getmaxx();

maxy = getmaxy();

setcolor(getmaxcolor());

setfillpattern(pattern, getmaxcolor());

bar(0, 0, maxx, maxy);

getch();

closegraph();

return 0;

}

函數名: setfillstyle

功 能: 設置填充模式和顏色

用 法: void far setfillstyle(int pattern, int color);

程序例:

#include

#include

#include

#include

#include

char *fname[] = { "EMPTY_FILL",

"SOLID_FILL",

"LINE_FILL",

"LTSLASH_FILL",

"SLASH_FILL",

"BKSLASH_FILL",

"LTBKSLASH_FILL",

"HATCH_FILL",

"XHATCH_FILL",

"INTERLEAVE_FILL",

"WIDE_DOT_FILL",

"CLOSE_DOT_FILL",

"USER_FILL"

};

int main(void)

{

int gdriver = DETECT, gmode, errorcode;

int style, midx, midy;

char stylestr[40];

initgraph(&gdriver, &gmode,

"");

errorcode = graphresult();

if (errorcode != grOk)

{

printf("Graphics error: %s\n", grapherrormsg(errorcode));

printf("Press any key to halt:");

getch();

exit(1);

}

midx = getmaxx() / 2;

midy = getmaxy() / 2;

for (style = EMPTY_FILL; style < USER_FILL;

style++)

{

setfillstyle(style, getmaxcolor());

strcpy(stylestr, fname[style]);

bar3d(0, 0, midx-10, midy, 0, 0);

outtextxy(midx, midy, stylestr);

getch();

cleardevice();

}

getch();

closegraph();

return 0;

}

函數名: setftime

功 能: 設置文件日期和時間

用 法: int setftime(int handle, struct ftime *ftimep);

程序例:

#include

#include

#include

#include

int main(void)

{

struct ftime filet;

FILE *fp;

if ((fp = fopen("TEST.$$$", "w")) == NULL)

{

perror("Error:");

exit(1);

}

fprintf(fp, "testing...\n");

filet.ft_tsec = 1;

filet.ft_min = 1;

filet.ft_hour = 1;

filet.ft_day = 1;

filet.ft_month = 1;

filet.ft_year = 21;

system("dir TEST.$$$");

setftime(fileno(fp), &filet);

fclose(fp);

system("dir TEST.$$$");

unlink("TEST.$$$");

return 0;

}

函數名: setgraphbufsize

功 能: 改變內部圖形緩沖區的大小

用 法: unsigned far setgraphbufsize(unsigned bufsize);

程序例:

#include

#include

#include

#include

#define BUFSIZE 1000

int main(void)

{

int gdriver = DETECT, gmode, errorcode;

int x, y, oldsize;

char msg[80];

oldsize = setgraphbufsize(BUFSIZE);

initgraph(&gdriver, &gmode,

"");

errorcode = graphresult();

if (errorcode != grOk)

{

printf("Graphics error: %s\n", grapherrormsg(errorcode));

printf("Press any key to halt:");

getch();

exit(1);

}

x = getmaxx() / 2;

y = getmaxy() / 2;

sprintf(msg, "Graphics buffer size: %d", BUFSIZE);

settextjustify(CENTER_TEXT, CENTER_TEXT);

outtextxy(x, y, msg);

sprintf(msg, "Old graphics buffer size: %d", oldsize);

outtextxy(x, y+textheight("W"), msg);

getch();

closegraph();

return 0;

}

函數名: setgraphmode

功 能: 將系統設置成圖形模式且清屏

用 法: void far setgraphmode(int mode);

程序例:

#include

#include

#include #include

int main(void)

{

int gdriver = DETECT, gmode, errorcode;

int x, y;

initgraph(&gdriver, &gmode,

"");

errorcode = graphresult();

if (errorcode != grOk)

{

printf("Graphics error: %s\n", grapherrormsg(errorcode));

printf("Press any key to halt:");

getch();

exit(1);

}

x = getmaxx() / 2;

y = getmaxy() / 2;

settextjustify(CENTER_TEXT, CENTER_TEXT);

outtextxy(x, y, "Press any key to exit graphics:");

getch();

restorecrtmode();

printf("We're now in text mode.\n");

printf("Press any key to return to graphics mode:");

getch();

setgraphmode(getgraphmode());

settextjustify(CENTER_TEXT, CENTER_TEXT);

outtextxy(x, y, "We're back in graphics mode.");

outtextxy(x, y+textheight("W"), "Press any key to halt:");

getch();

closegraph();

return 0;

}

函數名: setjmp

功 能: 非局部轉移

用 法: int setjmp(jmp_buf env);

程序例:

#include

#include

#include

void subroutine(void);

jmp_buf jumper;

int main(void)

{

int value;

value = setjmp(jumper);

if (value != 0)

{

printf("Longjmp with value %d\n", value);

exit(value);

}

printf("About to call subroutine ... \n");

subroutine();

return 0;

}

void subroutine(void)

{

longjmp(jumper,1);

}

函數名: setlinestyle

功 能: 設置當前畫線寬度和類型

用 法: void far setlinestyle(int linestype, unsigned upattern);

程序例:

#include

#include

#include

#include

#include

char *lname[] = {

"SOLID_LINE",

"DOTTED_LINE",

"CENTER_LINE",

"DASHED_LINE",

"USERBIT_LINE"

};

int main(void)

{

int gdriver = DETECT, gmode, errorcode;

int style, midx, midy, userpat;

char stylestr[40];

initgraph(&gdriver, &gmode,

"");

errorcode = graphresult();

if (errorcode != grOk)

{

printf("Graphics error: %s\n", grapherrormsg(errorcode));

printf("Press any key to halt:");

getch();

exit(1);

}

midx = getmaxx() / 2;

midy = getmaxy() / 2;

userpat = 1;

for (style=SOLID_LINE; style<=USERBIT_LINE;

style++)

{

setlinestyle(style, userpat, 1);

strcpy(stylestr, lname[style]);

line(0, 0, midx-10, midy);

rectangle(0, 0, getmaxx(), getmaxy());

outtextxy(midx, midy, stylestr);

getch();

cleardevice();

}

closegraph();

return 0;

}

函數名: setmem

功 能: 存值到存儲區

用 法: void setmem(void *addr, int len, char value);

程序例:

#include

#include

#include

int main(void)

{

char *dest;

dest = calloc(21, sizeof(char));

setmem(dest, 20, 'c');

printf("%s\n", dest);

return 0;

}

函數名: setmode

功 能: 設置打開文件方式

用 法: int setmode(int handle, unsigned mode);

程序例:

#include

#include

#include

int main(void)

{

int result;

result = setmode(fileno(stdprn), O_TEXT);

if (result == -1)

perror("Mode not available\n");

else

printf("Mode successfully switched\n");

return 0;

}

函數名: setpalette

功 能: 改變調色板的顏色

用 法: void far setpalette(int index, int actural_color);

程序例:

#include

#include

#include

#include

int main(void)

{

int gdriver = DETECT, gmode, errorcode;

int color, maxcolor, ht;

int y = 10;

char msg[80];

initgraph(&gdriver, &gmode,

"");

errorcode = graphresult();

if (errorcode != grOk)

{

printf("Graphics error: %s\n", grapherrormsg(errorcode));

printf("Press any key to halt:");

getch();

exit(1);

}

maxcolor = getmaxcolor();

ht = 2 * textheight("W");

for (color=1; color<=maxcolor; color++)

{

setcolor(color);

sprintf(msg, "Color: %d", color);

outtextxy(1, y, msg);

y += ht;

}

getch();

for (color=1; color<=maxcolor; color++)

{

setpalette(color, BLACK);

getch();

}

closegraph();

return 0;

}

函數名: setrgbpalette

功 能: 定義IBM8514圖形卡的顏色

用 法: void far setrgbpalette(int colornum, int red, int green, int

blue);

程序例:

#include

#include

#include

#include

int main(void)

{

int gdriver = VGA, gmode = VGAHI, errorcode;

struct palettetype pal;

int i, ht, y, xmax;

initgraph(&gdriver, &gmode,

"");

errorcode = graphresult();

if (errorcode != grOk)

{

printf("Graphics error: %s\n", grapherrormsg(errorcode));

printf("Press any key to halt:");

getch();

exit(1);

}

getpalette(&pal);

for (i=0; i

setrgbpalette(pal.colors[i], i*4, i*4, i*4);

ht = getmaxy() / 16;

xmax = getmaxx();

y = 0;

for (i=0; i

{

setfillstyle(SOLID_FILL, i);

bar(0, y, xmax, y+ht);

y += ht;

}

getch();

closegraph();

return 0;

}

函數名: settextjustify

功 能: 為圖形函數設置文本的對齊方式

用 法: void far settextjustify(int horiz, int vert);

程序例:

#include

#include

#include

#include

void xat(int x, int y);

char *hjust[] = { "LEFT_TEXT",

"CENTER_TEXT",

"RIGHT_TEXT"

};

char *vjust[] = { "LEFT_TEXT",

"CENTER_TEXT",

"RIGHT_TEXT"

};

int main(void)

{

int gdriver = DETECT, gmode, errorcode;

int midx, midy, hj, vj;

char msg[80];

initgraph(&gdriver, &gmode,

"");

errorcode = graphresult();

if (errorcode != grOk)

{

printf("Graphics error: %s\n", grapherrormsg(errorcode));

printf("Press any key to halt:");

getch();

exit(1);

}

midx = getmaxx() / 2;

midy = getmaxy() / 2;

for (hj=LEFT_TEXT; hj<=RIGHT_TEXT; hj++)

for (vj=LEFT_TEXT; vj<=RIGHT_TEXT; vj++)

{

cleardevice();

settextjustify(hj, vj);

sprintf(msg, "%s %s", hjust[hj], vjust[vj]);

xat(midx, midy);

outtextxy(midx, midy, msg);

getch();

}

closegraph();

return 0;

}

void xat(int x, int y)

{

line(x-4, y, x+4, y);

line(x, y-4, x, y+4);

}

函數名: settextstyle

功 能: 為圖形輸出設置當前的文本屬性

用 法: void far settextstyle (int font, int direction, char

size);

程序例:

#include

#include

#include

#include

char *fname[] = { "DEFAULT font",

"TRIPLEX font",

"SMALL font",

"SANS SERIF font",

"GOTHIC font"

};

int main(void)

{

int gdriver = DETECT, gmode, errorcode;

int style, midx, midy;

int size = 1;

initgraph(&gdriver, &gmode,

"");

errorcode = graphresult();

if (errorcode != grOk)

{

printf("Graphics error: %s\n", grapherrormsg(errorcode));

printf("Press any key to halt:");

getch();

exit(1);

}

midx = getmaxx() / 2;

midy = getmaxy() / 2;

settextjustify(CENTER_TEXT, CENTER_TEXT);

for (style=DEFAULT_FONT; style<=GOTHIC_FONT;

style++)

{

cleardevice();

if (style == TRIPLEX_FONT)

size = 4;

settextstyle(style, HORIZ_DIR, size);

outtextxy(midx, midy, fname[style]);

getch();

}

closegraph();

return 0;

}

函數名: settextstyle

功 能: 為圖形輸出設置當前的文本屬性

用 法: void far settextstyle (int font, int direction, char

size);

程序例:

#include

#include

#include

#include

char *fname[] = { "DEFAULT font",

"TRIPLEX font",

"SMALL font",

"SANS SERIF font",

"GOTHIC font"

};

int main(void)

{

int gdriver = DETECT, gmode, errorcode;

int style, midx, midy;

int size = 1;

initgraph(&gdriver, &gmode,

"");

errorcode = graphresult();

if (errorcode != grOk)

{

printf("Graphics error: %s\n", grapherrormsg(errorcode));

printf("Press any key to halt:");

getch();

exit(1);

}

midx = getmaxx() / 2;

midy = getmaxy() / 2;

settextjustify(CENTER_TEXT, CENTER_TEXT);

for (style=DEFAULT_FONT; style<=GOTHIC_FONT;

style++)

{

cleardevice();

if (style == TRIPLEX_FONT)

size = 4;

settextstyle(style, HORIZ_DIR, size);

outtextxy(midx, midy, fname[style]);

getch();

}

closegraph();

return 0;

}

函數名: settime

功 能: 設置系統時間

用 法: void settime(struct time *timep);

程序例:

#include

#include

int main(void)

{

struct time t;

gettime(&t);

printf("The current minute is: %d\n", t.ti_min);

printf("The current hour is: %d\n", t.ti_hour);

printf("The current hundredth of a second is: %d\n",

t.ti_hund);

printf("The current second is: %d\n", t.ti_sec);

t.ti_min++;

settime(&t);

return 0;

}

函數名: setusercharsize

功 能: 為矢量字體改變字符寬度和高度

用 法: void far setusercharsize(int multx, int dirx, int multy, int

diry);

程序例:

#include

#include

#include

#include

int main(void)

{

int gdriver = DETECT, gmode, errorcode;

initgraph(&gdriver, &gmode,

"");

errorcode = graphresult();

if (errorcode != grOk)

{

printf("Graphics error: %s\n", grapherrormsg(errorcode));

printf("Press any key to halt:");

getch();

exit(1);

}

settextstyle(TRIPLEX_FONT, HORIZ_DIR, 4);

moveto(0, getmaxy() / 2);

outtext("Norm ");

setusercharsize(1, 3, 1, 1);

outtext("Short ");

setusercharsize(3, 1, 1, 1);

outtext("Wide");

getch();

closegraph();

return 0;

}

函數名: setvbuf

功 能: 把緩沖區與流相關

用 法: int setvbuf(FILE *stream, char *buf, int type, unsigned

size);

程序例:

#include

int main(void)

{

FILE *input, *output;

char bufr[512];

input = fopen("file.in", "r+b");

output = fopen("file.out", "w");

if (setvbuf(input, bufr, _IOFBF, 512) != 0)

printf("failed to set up buffer for input file\n");

else

printf("buffer set up for input file\n");

if (setvbuf(output, NULL, _IOLBF, 132) != 0)

printf("failed to set up buffer for output file\n");

else

printf("buffer set up for output file\n");

fclose(input);

fclose(output);

return 0;

}

函數名: setvect

功 能: 設置中斷矢量入口

用 法: void setvect(int intr_num, void interrupt(*isr)());

程序例:

#include

#include

#include

#define INTR 0X1C

void interrupt ( *oldhandler)(void);

int count=0;

void interrupt handler(void)

{

count++;

oldhandler();

}

int main(void)

{

oldhandler = getvect(INTR);

setvect(INTR, handler);

while (count < 20)

printf("count is %d\n",count);

setvect(INTR, oldhandler);

return 0;

}

函數名: setverify

功 能: 設置驗證狀態

用 法: void setverify(int value);

程序例:

#include

#include

#include

int main(void)

{

int verify_flag;

printf("Enter 0 to set verify flag off\n");

printf("Enter 1 to set verify flag on\n");

verify_flag = getch() - 0;

setverify(verify_flag);

if (getverify())

printf("DOS verify flag is on\n");

else

printf("DOS verify flag is off\n");

return 0;

}

函數名: setviewport

功 能: 為圖形輸出設置當前視口

用 法: void far setviewport(int left, int top, int right,

int bottom, int clipflag);

程序例:

#include

#include

#include

#include

#define CLIP_ON 1

int main(void)

{

int gdriver = DETECT, gmode, errorcode;

initgraph(&gdriver, &gmode,

"");

errorcode = graphresult();

if (errorcode != grOk)

{

printf("Graphics error: %s\n", grapherrormsg(errorcode));

printf("Press any key to halt:");

getch();

exit(1);

}

setcolor(getmaxcolor());

outtextxy(0, 0, "*

viewport");

setviewport(50, 50, getmaxx()-50, getmaxy()-50, CLIP_ON);

outtextxy(0, 0, "*

viewport");

getch();

closegraph();

return 0;

}

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