C语言IWord文件下载.docx
- 文档编号:21010545
- 上传时间:2023-01-26
- 格式:DOCX
- 页数:12
- 大小:19.39KB
C语言IWord文件下载.docx
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intx,y,maxx;
unsignedintsize;
/*initializegraphicsandlocalvariables*/
initgraph(&
gdriver,&
gmode,"
"
);
/*readresultofinitialization*/
errorcode=graphresult();
if(errorcode!
=grOk)
/*anerroroccurred*/
{
printf("
Graphicserror:
%s\n"
grapherrormsg(errorcode));
Pressanykeytohalt:
getch();
exit
(1);
/*terminatewithanerrorcode*/
}
maxx=getmaxx();
x=0;
y=getmaxy()/2;
/*drawtheimagetobegrabbed*/
draw_arrow(x,y);
/*calculatethesizeoftheimage*/
size=imagesize(x,y-ARROW_SIZE,x+(4*ARROW_SIZE),y+ARROW_SIZE);
/*allocatememorytoholdtheimage*/
arrow=malloc(size);
/*grabtheimage*/
getimage(x,y-ARROW_SIZE,x+(4*ARROW_SIZE),y+ARROW_SIZE,arrow);
/*repeatuntilakeyispressed*/
while(!
kbhit())
/*eraseoldimage*/
putimage(x,y-ARROW_SIZE,arrow,XOR_PUT);
x+=ARROW_SIZE;
if(x>
=maxx)
/*plotnewimage*/
/*cleanup*/
free(arrow);
closegraph();
return0;
}
voiddraw_arrow(intx,inty)
/*drawanarrowonthescreen*/
moveto(x,y);
linerel(4*ARROW_SIZE,0);
linerel(-2*ARROW_SIZE,-1*ARROW_SIZE);
linerel(0,2*ARROW_SIZE);
linerel(2*ARROW_SIZE,-1*ARROW_SIZE);
initgraph
初始化图形系统
voidfarinitgraph(intfar*graphdriver,intfar*graphmode,
charfar*pathtodriver);
/*requestautodetection*/
/*initializegraphicsmode*/
/*returnwitherrorcode*/
/*drawaline*/
line(0,0,getmaxx(),getmaxy());
inport
从硬件端口中输入
intinp(intprotid);
dos.h>
intresult;
intport=0;
/*serialport0*/
result=inport(port);
Wordreadfromport%d=0x%X\n"
port,result);
insline
在文本窗口中插入一个空行
voidinsline(void);
clrscr();
cprintf("
INSLINEinsertsanemptylineinthetextwindow\r\n"
atthecursorpositionusingthecurrenttext\r\n"
backgroundcolor.
Alllinesbelowtheemptyone\r\n"
movedownonelineandthebottomlinescrolls\r\n"
offthebottomofthewindow.\r\n"
\r\nPressanykeytocontinue:
gotoxy(1,3);
insline();
installuserdriver
安装设备驱动程序到BGI设备驱动程序表中
intfarinstalluserdriver(charfar*name,int(*detect)(void));
/*functionprototypes*/
inthugedetectEGA(void);
voidcheckerrors(void);
intgdriver,gmode;
/*installauserwrittendevicedriver*/
gdriver=installuserdriver("
EGA"
detectEGA);
/*mustforceuseofdetectionroutine*/
gdriver=DETECT;
/*checkforanyinstallationerrors*/
checkerrors();
/*checkforanyinitializationerrors*/
/*detectsEGAorVGAcards*/
inthugedetectEGA(void)
intdriver,mode,sugmode=0;
detectgraph(&
driver,&
mode);
if((driver==EGA)||(driver==VGA))
/*returnsuggestedvideomodenumber*/
returnsugmode;
else
/*returnanerrorcode*/
returngrError;
/*checkforandreportanygraphicserrors*/
voidcheckerrors(void)
interrorcode;
/*readresultoflastgraphicsoperation*/
=grOk)
installuserfont
安装未嵌入BGI系统的字体文件(CHR)
intfarinstalluserfont(charfar*name);
/*functionprototype*/
intgdriver=DETECT,gmode;
intuserfont;
intmidx,midy;
midx=getmaxx()/2;
midy=getmaxy()/2;
/*installauserdefinedfontfile*/
userfont=installuserfont("
USER.CHR"
/*selecttheuserfont*/
settextstyle(userfont,HORIZ_DIR,4);
/*outputsometext*/
outtextxy(midx,midy,"
Testing!
int86
通用8086软中断接口
intint86(intintr_num,unionREGS*inregs,unionREGS*outregs);
#defineVIDEO0x10
voidmovetoxy(intx,inty)
unionREGSregs;
regs.h.ah=2;
/*setcursorpostion*/
regs.h.dh=y;
regs.h.dl=x;
regs.h.bh=0;
/*videopage0*/
int86(VIDEO,&
regs,&
regs);
movetoxy(35,10);
Hello\n"
int86x
intint86x(intintr_num,unionREGS*insegs,unionREGS*outregs,structSREGS*segregs);
process.h>
charfilename[80];
unionREGSinregs,outregs;
structSREGSsegregs;
Enterfilename:
"
gets(filename);
inregs.h.ah=0x43;
inregs.h.al=0x21;
inregs.x.dx=FP_OFF(filename);
segregs.ds=FP_SEG(filename);
int86x(0x21,&
inregs,&
outregs,&
segregs);
Fileattribute:
%X\n"
outregs.x.cx);
intdos
通用DOS接口
intintdos(unionREGS*inregs,unionREGS*outregs);
/*deletesfilename;
returns0onsuccess,nonzeroonfailure*/
intdelete_file(charnear*filename)
intret;
regs.h.ah=0x41;
/*deletefile*/
regs.x.dx=(unsigned)filename;
ret=intdos(&
/*ifcarryflagisset,therewasanerror*/
return(regs.x.cflag?
ret:
0);
interr;
err=delete_file("
NOTEXIST.$$$"
if(!
err)
AbletodeleteNOTEXIST.$$$\n"
NotAbletodeleteNOTEXIST.$$$\n"
intdosx
通用DOS中断接口
intintdosx(unionREGS*inregs,unionREGS*outregs,structSREGS*segregs);
intdelete_file(charfar*filename)
structSREGSsregs;
regs.x.dx=FP_OFF(filename);
sregs.ds=FP_SEG(filename);
ret=intdosx(&
sregs);
intr
改变软中断接口
voidintr(intintr_num,structREGPACK*preg);
string.h>
dir.h>
#defineCF1
/*Carryflag*/
chardirectory[80];
structREGPACKreg;
Enterdirectorytochangeto:
gets(directory);
reg.r_ax=0x3B<
<
8;
/*shift3Bhinto
AH*/
reg.r_dx=FP_OFF(directory);
reg.r_ds=FP_SEG(directory);
intr(0x21,&
reg);
if(reg.r_flags&
CF)
Directorychangefailed\n"
getcwd(directory,80);
Thecurrentdirectoryis:
directory);
ioctl
控制I/O设备
intioctl(inthandle,intcmd[,int*argdx,intargcx]);
io.h>
intstat;
/*usefunc8todetermineifthedefaultdriveisremovable*/
stat=ioctl(0,8,0,0);
stat)
Drive%cisremovable.\n"
getdisk()+'
A'
Drive%cis
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