C 图形界面编程
说心里话,我以前也喜欢c的,不过太难了.这是一点东西.你可以实验以下的.c里的函数太多,你可以到新华书店去找书的,很多那方面的书.都很好,不过建议你学其他的语言,
函数名:line
功能:在指定两点间画一直线
用法:voidfarline(intx0,inty0,intx1,inty1);
#include
#include
#include
#include
intmain(void)
/*requestautodetection*/
intgdriver=DETECT,gmode,errorcode;
intxmax,ymax;
/*initializegraphicsandlocalvariables*/
initgraph(&gdriver,&gmode,"");
/*readresultofinitialization*/
errorcode=graphresult();
/*anerroroccurred*/
if(errorcode!=grOk)
printf("Graphicserror:%s\n",
grapherrormsg(errorcode));
printf("Pressanykeytohalt:");
getch();
exit(1);
setcolor(getmaxcolor());
xmax=getmaxx();
ymax=getmaxy();
/*drawadiagonalline*/
line(0,0,xmax,ymax);
/*cleanup*/
getch();
closegraph();
return0;
函数名:linerel
功能:从当前位置点(CP)到与CP有一给定相对距离的点画一直线
用法:voidfarlinerel(intdx,intdy);
#include
#include
#include
#include
intmain(void)
/*requestautodetection*/
intgdriver=DETECT,gmode,errorcode;
charmsg[80];
/*initializegraphicsandlocalvariables*/
initgraph(&gdriver,&gmode,"");
/*readresultofinitialization*/
errorcode=graphresult();
if(errorcode!=grOk)
printf("Graphicserror:%s\n",
grapherrormsg(errorcode));
printf("Pressanykeytohalt:");
getch();
exit(1);
/*movetheC.P.tolocation(20,30)*/
moveto(20,30);
/*createandoutputa
messageat(20,30)*/
sprintf(msg,"(%d,%d)",getx(),gety());
outtextxy(20,30,msg);
/*drawalinetOApointarelative
distanceawayfromthecurrent
valueofC.P.*/
linerel(100,100);
/*createandoutputamessageatC.P.*/
sprintf(msg,"(%d,%d)",getx(),gety());
outtext(msg);
/*cleanup*/
getch();
closegraph();
return0;
函数名:circle
功能:在给定半径以(x,y)为圆心画圆
用法:voidfarcircle(intx,inty,intradius);
#include
#include
#include
#include
intmain(void)
/*requestautodetection*/
intgdriver=DETECT,gmode,errorcode;
intmidx,midy;
intradius=100;
/*initializegraphicsandlocalvariables*/
initgraph(&gdriver,&gmode,"");
/*readresultofinitialization*/
errorcode=graphresult();
if(errorcode!=grOk)/*anerroroccurred*/
printf("Graphicserror:%s\n",grapherrormsg(errorcode));
printf("Pressanykeytohalt:");
getch();
exit(1);/*terminatewithanerrorcode*/
midx=getmaxx()/2;
midy=getmaxy()/2;
setcolor(getmaxcolor());
/*drawthecircle*/
circle(midx,midy,radius);
/*cleanup*/
getch();
closegraph();
return0;
函数名:cleardevice
功能:清除图形屏幕
用法:voidfarcleardevice(void);
#include
#include
#include
#include
intmain(void)
/*requestautodetection*/
intgdriver=DETECT,gmode,errorcode;
intmidx,midy;
/*initializegraphicsandlocalvariables*/
initgraph(&gdriver,&gmode,"");
/*readresultofinitialization*/
errorcode=graphresult();
if(errorcode!=grOk)/*anerroroccurred*/
printf("Graphicserror:%s\n",grapherrormsg(errorcode));
printf("Pressanykeytohalt:");
getch();
exit(1);/*terminatewithanerrorcode*/
midx=getmaxx()/2;
midy=getmaxy()/2;
setcolor(getmaxcolor());
/*forcenteringscreenmessages*/
settextjustify(CENTER_TEXT,CENTER_TEXT);
/*outputamessagetothescreen*/
outtextxy(midx,midy,"pressanykeytoclearthescreen:");
/*waitforakey*/
getch();
/*clearthescreen*/
cleardevice();
/*outputanothermessage*/
outtextxy(midx,midy,"pressanykeytoquit:");
/*cleanup*/
getch();
closegraph();
return0;
C语言编程 绘制曲线，会的来
TC下调试通过/********************************************************Author:Wacs5*Date:20090105(YYYY-MM-DD)*Function:画简易的曲线图 *********************************************************/#include #include #include #include #include #define n 8int main()int i,j;float data[]={7,3,12,6,9,5,8,11};char str[40];int gdrive=DETECT,gmode,errorcode;int maxx,maxy;int perx,pery;int x0,x1,y0,y1;int coLoraxis=2,colorline=3;float mindata,maxdata,ndata;initgraph(&gdrive,&gmode,"");/*初始化设备*/if ((errorcode=graphresult())!=grOk)/*查错*/printf("Graphics error:%s\nPress any key to exit:",grapherrormsg(errorcode));getch();exit(1);maxx=getmaxx();maxy=getmaxy();mindata=maxdata=data[0];for (i=1;idata[i])mindata=data[i];if (maxdata
