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本帖最后由 happysxyf 于 2017-2-12 22:53 编辑
FPLOT.EXE函数绘图工具,一直开源,从不保留。
下载:
fplot源码.zip
(23.95 KB, 下载次数: 18)
摘要:
=============================================================================
数学函数绘图工具,支持几乎所有的数学函数表达式绘制,支持标准直角坐标、
极坐标、参数方程、参数极方程的绘制。
采用剪枝算法,具备极高绘制精度、速度,同时自动过滤间断点、无穷点。自动上色、
自动编号、自动筛选有效定义域。这是一个完全媲美GNU PLOT的工具,纯命令行操作,
更少的开关,简约而不简单。
=============================================================================
用法:
-----------------------------------------------------------------------------
fplot [options] {arguments}...
-----------------------------------------------------------------------------
/zoom [x-zoom] [y-zoom] //设置水平缩放、垂直缩放率
/move [x-move] [y-move] //设置水平偏移、垂直偏移值
/plo(t|p) [indvar] [expression] //待绘制自变量、因变量字串
-----------------------------------------------------------------------------
注意: 绘直角坐标用/plot,绘极坐标用/plop。
示例:
-----------------------------------------------------------------------------
fplot /zoom 30 30 /plot x sin(x) //放大30倍,自变量为x,绘制sin(x)
fplot /zoom 300 300 /plop x sin(x) //放大300倍,按照极坐标方式绘制
fplot /zoom 0 0 //清除图像
fplot /zoom 0 1 //隐藏光标
fplot /zoom 1 0 //显示光标
-----------------------------------------------------------------------------
备注:
-----------------------------------------------------------------------------
常数类
pi 3.1415926535897932
e 2.7182818284590452
通用类
rand 随机数
round 四舍五入
int 取整
ceil 向上舍入
floor 向下舍入
abs 绝对值
sqrt 开方
lg 常用对数,以10为底
ln 自然对数
exp e的次幂
gamma 伽玛函数
torad 度转弧度
+ 加
- 减
* 乘
/ 除
% 取余数
^ 次方
! 阶乘
三角函数类
sin、cos、tan
arcsin、arccos、arctan
双曲函数类
sinh、cosh、tanh
arcsinh、arccosh、arctanh
-----------------------------------------------------------------------------
英译:
-----------------------------------------------------------------------------
CONSOLE FUNCTION DRAWING TOOL, COPYRIGHT@2017~2019 BY HAPPY
-----------------------------------------------------------------------------
fplot [options] {arguments}...
-----------------------------------------------------------------------------
/zoom [x-zoom] [y-zoom]
/move [x-move] [y-move]
/plo(t|p) [indvar] [expression]
-----------------------------------------------------------------------------
2017-02-11 VERSION 1.7"
原创代码:(仅支持g++编译器)
- /*
- CONSOLE FUNCTION DRAWING TOOL, COPYRIGHT@2017~2019 BY HAPPY, VERSION 1.0
- FPLOT.EXE
- LINK GDIPLUS.LIB GDI32.LIB
- */
- #include <math.h>
- #include <time.h>
- #include <stdio.h>
- #include <windows.h>
- #include <gdiplus\gdiplus.h>
- //使用GDI+
- using namespace Gdiplus;
- //申明函数
- extern "C" HWND WINAPI GetConsoleWindow();
- //定义帮助说明
- #define HELP_INFORMATION "\
- -----------------------------------------------------------------\n\
- CONSOLE FUNCTION DRAWING TOOL, COPYRIGHT@2017~2019 BY HAPPY\n\
- -----------------------------------------------------------------\n\
- fplot [options] {arguments}...\n\
- -----------------------------------------------------------------\n\
- /zoom [x-zoom] [y-zoom]\n\
- /move [x-move] [y-move]\n\
- /plo(t|p) [indvar] [expression]\n\
- -----------------------------------------------------------------\n\
- 2017-02-12 VERSION 1.7"
- /***************定义全局变量*************/
- //定义开关词目
- #define SENSITIVE_NUM 7
- static const char* SENSITIVE_WORDS[]={"/ZOOM", "/MOVE", "/PLOT", "/PLOP", "/HELP", "/H", "/?"};
- static const char SENSITIVE_ARGVS[]={ 2, 2, 2, 2, 0, 0, 0};
- //数学函数词目
- static const char* KEY_WORDS[]={"E", "PI", "SQRT", "LG", "LN", "SIN", "COS", "TAN", "ARCSIN", "ARCCOS", "ARCTAN", "TORAD", "ABS", "ROUND", "FLOOR", "CEIL", "EXP", "SINH", "COSH", "TANH", "ARCSINH", "ARCCOSH", "ARCTANH", "INT", "GAMMA", "X", NULL};
- //堆栈尺寸
- #define STACK_SIZE 1024
- //运算符栈
- static char STACK1[STACK_SIZE]={0};
- //逆波兰栈
- static char STACK2[STACK_SIZE]={0};
- //浮点数栈
- static float STACK3[STACK_SIZE]={0};
- //定义绘线属性
- static float xZOOM=50, yZOOM=50, xMOVE=0, yMOVE=0, hCOLOR=0, hPREC=1000, hMARK=12, xOFFSET=0, yOFFSET=0;
- //主窗区域
- RECT winRECT={0};
- LPRECT lrRECT;
- //字符串存储容器
- static WCHAR Tainer[1024]={0};
- static CHAR FTainer[32] ={0};
- //定义颜色结构体
- typedef struct{
- BYTE R;
- BYTE G;
- BYTE B;
- COLORREF VALUE;
- }STRGB;
- //十六色系数组
- static const STRGB PARGB[15]={
- {255, 0, 0,RGB(255, 0, 0)}, //红色
- { 33,198,239,RGB( 33,198,239)}, //未蓝
- {255,255, 0,RGB(255,255, 0)}, //黄色
- {238,130,238,RGB(238,130,238)}, //紫兰
- {165, 42, 42,RGB(165, 42, 42)}, //棕色
- {144,238,144,RGB(144,238,144)}, //浅绿
- { 0, 0,255,RGB( 0, 0,255)}, //蓝色
- {255, 0,255,RGB(255, 0,255)}, //洋紫
- {169,169,169,RGB(169,169,169)}, //深灰
- {173,216,230,RGB(173,216,230)}, //淡蓝
- {248, 29, 56,RGB(248, 29, 56)}, //亮红
- { 0,255, 0,RGB( 0,255, 0)}, //绿色
- {224,255,255,RGB(224,255,255)}, //淡青
- { 0,255,255,RGB( 0,255,255)}, //青色
- {255,255,255,RGB(255,255,255)} //白色
- };
- //创建绘图字体
- FontFamily* fontFAMILY;
- //设置字体属性
- Font* tFONT, *nFONT;
- //创建字体画刷
- SolidBrush* tBRUSH;
-
- /***************逆波兰核心***************/
- float RevPolishCore(const char* expression, float varV)
- {
- char *op=(char*)expression, *S1=STACK1, *S2=STACK2, **key, *cp, *kp;
- float *S3=STACK3, di, ni;
- int brackets=0;
- STACK3[0]=0;
-
- //生成逆波兰
- while(*op!='\0'){
- switch(*op){
- case ' ' :
- case '\t':
- case '\r':
- case '\n':
- //过滤空字符
- op++;
- continue;
-
- case '(':
- brackets++;
- *(++S1)=*op;
- if(*(op+1)=='-' || *(op+1)=='+'){
- *(S2++)='0', *(S2++)=' ';
- }
- break;
- case ')':
- //验证括号是否闭合
- if(brackets ==0){
- fputs("The brackets or ')' are not need", stderr);
- exit(1);
- }
- brackets--;
- while(*S1!='(')
- {
- *(S2++)=*(S1--);
- }
- //舍弃'('
- S1--;
- break;
- case '+':
- case '-':
- while(S1!=STACK1 && *S1!='(')
- {
- *(S2++)=*(S1--);
- }
- *(++S1)=*op;
- break;
- case '^':
- //指数符
- while( ('A'<=(*S1) && (*S1)<='Z') )
- {
- *(S2++)=*(S1--);
- }
- *(++S1)=*op;
- break;
- case '!':
- //阶乘符
- *(S2++)=*op;
- break;
- case '%':
- case '*':
- case '/':
- while(('A'<=(*S1) && (*S1)<='Z') ||*S1=='%' ||*S1=='*' ||*S1=='/' ||*S1=='^'){
- *(S2++)=*(S1--);
- }
- *(++S1)=*op;
- break;
- default :
- if(
- ('a'<=*op && *op<='z') ||
- ('A'<=*op && *op<='Z')
- ){
- //识别数学函数关键词
- key=(char**)KEY_WORDS;
- while(*key !=NULL){
- cp=op, kp=*key;
- //比对关键词字母
- while((*cp==*kp||*cp==*kp+32) && *kp!='\0'){
- cp++, kp++;
- }
- //验证关键词结尾
- if( ((*cp<'A')||('Z'<*cp && *cp<'a')||(*cp>'z')) && (*kp=='\0') ){
- op=cp;
- break;
- }
- key++;
- }
- //构建伪双目
- *(S2++)='.';
- *(S2++)=' ';
- //伪双目入栈
- while( ('A'<=(*S1) && (*S1)<='Z') ){
- *(S2++)=*(S1--);
- }
- if(*key !=NULL){
- *(++S1)=key-(char**)KEY_WORDS+65;
- }else{
- while(
- ('a'<=*op && *op<='z') ||
- ('A'<=*op && *op<='Z')
- ){op++;}
- *(++S1)='Z';
- }
- continue;
- }else if(('0'<=*op && *op<='9') || (*op=='.')){
- //浮点数入栈
- while(('0'<=*op && *op<='9') || (*op=='.')){
- *(S2++)=*(op++);
- }
- if(
- ('a'<=*op && *op<='z') ||
- ('A'<=*op && *op<='Z')
- ){
- //缺少必要的运算符
- fputs("Missing required operator\n", stderr);
- exit(1);
- }
- op--;
- *(S2++)=' ';
- }else{
- //无法识别的运算符
- fputs("Unrecognized operator\n", stderr);
- exit(1);
- }
- break;
- }
- op++;
- }
- //验证括号是否闭合
- if(brackets !=0){
- fputs("The brackets '(' are not closed", stderr);
- exit(1);
- }
- //收尾逆波兰
- while(S1 !=STACK1){*(S2++)=*(S1--);}
- *S2=' ';
- //计算逆波兰
- op=STACK2;
- while(*op!=' '){
- switch(*op){
- case 'A':
- *S3=2.7182818284590452;
- break;
- case 'B':
- *S3=3.1415926535897932;
- break;
- case 'C':
- *(S3-1)=sqrtf(*S3);
- S3--;
- break;
- case 'D':
- *(S3-1)=log10f(*S3);
- S3--;
- break;
- case 'E':
- *(S3-1)=logf(*S3);
- S3--;
- break;
- case 'F':
- *(S3-1)=sinf(*S3);
- S3--;
- break;
- case 'G':
- *(S3-1)=cosf(*S3);
- S3--;
- break;
- case 'H':
- *(S3-1)=tanf(*S3);
- S3--;
- break;
- case 'I':
- *(S3-1)=asinf(*S3);
- S3--;
- break;
- case 'J':
- *(S3-1)=acosf(*S3);
- S3--;
- break;
- case 'K':
- *(S3-1)=atanf(*S3);
- S3--;
- break;
- case 'L':
- *(S3-1)=(*S3)*3.1415926535897932/180.0;
- S3--;
- break;
- case 'M':
- *(S3-1)=fabsf(*S3);
- S3--;
- break;
- case 'N':
- *(S3-1)=roundf(*S3);
- S3--;
- break;
- case 'O':
- *(S3-1)=floorf(*S3);
- S3--;
- break;
- case 'P':
- *(S3-1)=ceilf(*S3);
- S3--;
- break;
- case 'Q':
- *(S3-1)=expf(*S3);
- S3--;
- break;
- case 'R':
- *(S3-1)=sinhf(*S3);
- S3--;
- break;
- case 'S':
- *(S3-1)=coshf(*S3);
- S3--;
- break;
- case 'T':
- *(S3-1)=tanhf(*S3);
- S3--;
- break;
- case 'U':
- *(S3-1)=asinhf(*S3);
- S3--;
- break;
- case 'V':
- *(S3-1)=acoshf(*S3);
- S3--;
- break;
- case 'W':
- *(S3-1)=atanhf(*S3);
- S3--;
- break;
- case 'X':
- *(S3-1)=(int)(*S3);
- S3--;
- break;
- case 'Y':
- *(S3-1)=tgammaf(*S3);
- S3--;
- break;
- case 'Z':
- *S3=varV;
- break;
- case '+':
- *(S3-1)+=*S3;
- S3--;
- break;
- case '-':
- *(S3-1)-=*S3;
- S3--;
- break;
- case '*':
- *(S3-1)*=*S3;
- S3--;
- break;
- case '%':
- case '/':
- if(*op=='%'){
- //取余数
- *(S3-1)=(int)*(S3-1) % (int)*S3;
- }else{
- *(S3-1)/=*S3;
- }
- S3--;
- break;
- case '^':
- *(S3-1)=powf(*(S3-1), *S3);
- S3--;
- break;
- case '!':
- *S3=tgammaf(*S3+1);
- break;
- default :
- //字符串转浮点
- di=0, ni=1;
- while('0'<=*op && *op<='9'){
- di=10*di+(*op)-'0';
- op++;
- }
- if(*op=='.'){
- op++;
- while('0'<=*op && *op<='9'){
- di=10*di+(*op)-'0';
- op++, ni*=10;
- }
- }
- *(++S3)=di/ni;
- break;
- }
- op++;
- }
- //返回计算结果
- return *S3;
- }
- /***************功能函数群***************/
- //光标函数
- BOOL DispyCursor(int size,bool mode)
- {
- CONSOLE_CURSOR_INFO cinfo ={(DWORD)size, mode};
- return SetConsoleCursorInfo(GetStdHandle(STD_OUTPUT_HANDLE), &cinfo);
- }
- //转码函数
- WCHAR* L(const CHAR* str)
- {
- if(!str){return NULL;}
- int wLen=MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, str, -1, NULL, 0);
- MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, str, -1, Tainer, wLen);
- Tainer[wLen]='\0';
- return Tainer;
- }
- //辨关键词
- int itifyWORDS(const char* strARGV)
- {
- int i, SN;
- for(SN=0; SN<SENSITIVE_NUM; SN++){
- char *op=(char*)strARGV, *kp=(char*)SENSITIVE_WORDS[SN];
- while(*kp!='\0'){
- if( (('a'<= *op && *op<='z')?*op-32:*op) != (('a'<= *kp && *kp<='z')?*kp-32:*kp) ){break;}
- op++;kp++;
- }
- if( (*kp=='\0') && (*op==' '||*op=='\t'||*op=='\r'||*op=='\n'||*op=='\0') ){return SN;}
- }
- return -1;
- }
- //显示数字
- void drawNUMS(Graphics *graph, float fnum, float px, float py)
- {
- sprintf(FTainer, "%.5g", fnum);
- graph->DrawString(L(FTainer), -1, tFONT, PointF(px,py), tBRUSH);
- }
- //绘制刻度
- void drawAXY(Graphics *graph)
- {
- //设置坐标字体
- Font fontp(fontFAMILY, 12, FontStyleRegular, UnitPixel);
- tFONT=&fontp;
- //设置曲线光滑
- graph->SetSmoothingMode(SmoothingModeHighQuality);
- //创建白色画笔
- Pen *pen, pez(Color(160, 255, 255, 255), 1), pep(Color(160, 255, 255, 255), 1);
- //设置虚线画笔
- pez.SetDashStyle(DashStyleDash);
- for(int i=0; i<=lrRECT->right*2; i+=50){
- //绘制坐标
- if(i==0){
- //绘制坐标原点
- drawNUMS(graph, 0, xOFFSET, yOFFSET);
- }else{
- //绘制坐标刻度
- drawNUMS(graph, i/xZOOM, xOFFSET+i, yOFFSET);
- drawNUMS(graph, 0-i/xZOOM, xOFFSET-i, yOFFSET);
- drawNUMS(graph, 0-i/yZOOM, xOFFSET, yOFFSET+i);
- drawNUMS(graph, i/yZOOM, xOFFSET, yOFFSET-i);
- }
- //绘制网格
- if(i==0){
- pen=&pep;
- }else{
- pen=&pez;
- }
- graph->DrawLine(pen, PointF(0, yOFFSET+i), PointF(lrRECT->right, yOFFSET+i));
- graph->DrawLine(pen, PointF(0, yOFFSET-i), PointF(lrRECT->right, yOFFSET-i));
- graph->DrawLine(pen, PointF(xOFFSET+i, 0), PointF(xOFFSET+i,lrRECT->bottom));
- graph->DrawLine(pen, PointF(xOFFSET-i, 0), PointF(xOFFSET-i,lrRECT->bottom));
- }
- //清理对象
- DeleteObject(pen);
- DeleteObject(&pez);
- DeleteObject(&pep);
- DeleteObject(&fontp);
- }
- //绘制曲线
- void drawFUN(Graphics *graph, BOOL penMODE, const char* varression, const char* expression)
- {
- //设置绘图曲线光滑
- graph->SetSmoothingMode(SmoothingModeHighQuality);
- //创建彩色画笔
- STRGB* penRGB=(STRGB*)&PARGB[(int)hCOLOR];
- Pen pep(Color(255,penRGB->R,penRGB->G,penRGB->B), 2), *pen=&pep;
- //设置注释字体
- Font fontp(fontFAMILY, 13, FontStyleBold, UnitPixel);
- tFONT=&fontp;
- //绘制函数注释
- graph->DrawLine(pen, PointF(2, hMARK+6), PointF(20, hMARK+6));
- graph->DrawString(L(expression), -1, tFONT, PointF(20,hMARK), tBRUSH);
- hMARK+=16;
- //绘制函数曲线
- float t, x1, y1, x2, y2, t_start=(-lrRECT->right/2.0-xMOVE)/xZOOM, t_end=(lrRECT->right/2.0-xMOVE)/xZOOM, add=lrRECT->right/xZOOM/hPREC, y_start=2*(-lrRECT->bottom/2.0-yMOVE)/yZOOM, y_end=2*(lrRECT->bottom/2.0-yMOVE)/yZOOM;
- if(penMODE){
- //直角坐标
- x1=RevPolishCore(varression, t_start), y1=RevPolishCore(expression, t_start);
- for(t=t_start; t<=t_end; t+=add){
- x2=RevPolishCore(varression, t+add), y2=RevPolishCore(expression, t+add);
- if((t!=t_start) && (y_start<y1 && y1<y_end) && (y_start<y2 && y2<y_end)){
- graph->DrawLine(pen, PointF(xZOOM*x1+xOFFSET, -yZOOM*y1+yOFFSET), PointF(xZOOM*x2+xOFFSET, -yZOOM*y2+yOFFSET));
- }
- x1=x2, y1=y2;
- }
- }else{
- //极轴坐标
- x1=RevPolishCore(varression, t_start), y1=RevPolishCore(expression, t_start);
- for(t=t_start; t<=t_end*5; t+=add){
- x2=RevPolishCore(varression, t+add), y2=RevPolishCore(expression, t+add);
- if((t!=t_start) && (y_start<y1 && y1<y_end) && (y_start<y2 && y2<y_end)){
- graph->DrawLine(pen, PointF(xZOOM*y1*cos(x1)+xOFFSET, -yZOOM*y1*sin(x1)+yOFFSET), PointF(xZOOM*y2*cos(x2)+xOFFSET, -yZOOM*y2*sin(x2)+yOFFSET));
- }
- x1=x2, y1=y2;
- }
- }
-
- //清理对象
- DeleteObject(pen);
- DeleteObject(&pep);
- DeleteObject(&fontp);
- }
- //开关解析
- void OptRE(int argc, char** argv)
- {
- //计算有效参数数目
- int oargc=argc-1, anum;
- if(oargc==0){
- //无参数,则抛出使用说明
- fputs(HELP_INFORMATION, stderr);
- exit(1);
- }
- //获取CMD窗口句柄
- HWND hCMD=GetConsoleWindow();
- HDC hDC =GetDC(hCMD);
- //获取CMD窗口大小
- lrRECT=&winRECT;
- GetClientRect(hCMD, lrRECT);
- //获取像素坐标基值
- xOFFSET=lrRECT->right/2, yOFFSET=lrRECT->bottom/2;
- //创建加速内存画布
- HWND hWND2=NULL;
- HDC hDC2=CreateCompatibleDC(hDC);
- HBITMAP hBitmap2=CreateCompatibleBitmap(hDC, lrRECT->right, lrRECT->bottom);
- SelectObject(hDC2, hBitmap2);
-
- //创建绘图工具
- Graphics graphicsp(hDC), *graph=&graphicsp;
- //创建绘图字体
- FontFamily fontf(L"SimSun");
- fontFAMILY=&fontf;
- //创建字体画刷
- SolidBrush brushp(Color(255, 255, 255, 255));
- tBRUSH=&brushp;
-
- //初始化线条颜色
- int srCOLOR=0;
-
- //参数接收针
- char** oargv=argv;
-
- //参数累加器
- int i=0;
-
- //坐标绘制态
- BOOL dMARK=FALSE;
- //临时变量
- float tp1, tp2;
- //开启主循环
- while((++i)<=oargc){
- int SN=itifyWORDS(argv[i]);
- if(SN!=-1){
- if(i+SENSITIVE_ARGVS[SN]>oargc){
- //缺少必要参数
- fprintf(stderr, "The option '%s' needs %d parameters\n", argv[i], SENSITIVE_ARGVS[SN]);
- exit(1);
- }
- for(anum=1; anum<=SENSITIVE_ARGVS[SN]; anum++){
- if(oargv[i+anum][0]==SENSITIVE_WORDS[0][0]){
- //缺少必要参数
- fprintf(stderr, "Only %d parameters, the option '%s' needs %d parameters\n", anum-1, argv[i], SENSITIVE_ARGVS[SN]);
- exit(1);
- }
- }
-
- //执行开关命令
- switch(SN)
- {
- case 0:
- //ZOOM
- tp1=fabsf(atof(argv[i+1])), tp2=fabsf(atof(argv[i+2]));
- //解析ZOOM开关的隐藏功能
- if(tp1*tp2==0){
- if(tp2!=0){
- DispyCursor((DWORD)25, FALSE);
- }else if(tp1!=0){
- DispyCursor((DWORD)25, TRUE );
- }else{
- InvalidateRect(hCMD, NULL, FALSE);
- dMARK=FALSE;
- }
- break;
- }
- InvalidateRect(hCMD, NULL, FALSE);
- dMARK=FALSE, srCOLOR=0, hMARK=12;
- xZOOM=tp1, yZOOM=tp2;
- break;
- case 1:
- //MOVE
- if(dMARK){
- InvalidateRect(hCMD, NULL, FALSE);
- dMARK=FALSE, srCOLOR=0, hMARK=12;
- }
- xMOVE=atof(argv[i+1]), yMOVE=atof(argv[i+2]);
- xOFFSET+=xMOVE, yOFFSET-=yMOVE;
- break;
- case 2:
- case 3:
- //PLOP||PLOT
- if(!dMARK){
- //调用坐标绘制函数
- drawAXY(graph);
- dMARK=TRUE;
- }
- hCOLOR=(srCOLOR++)%15;
- drawFUN(graph, (SN==2)?TRUE:FALSE, argv[i+1], argv[i+2]);
- break;
- default:
- //HELP
- fputs(HELP_INFORMATION, stderr);
- exit(1);
- }
- i+=SENSITIVE_ARGVS[SN];
-
- //无法识别的参数
- }else{
- fprintf(stderr, "An error occurred near '%s'\n", argv[i]);
- exit(1);
- }
- }
- //从内存画布复制到CMD画布
- //BitBlt(hDC,0,0,lrRECT->right,lrRECT->bottom, hDC2,0,0,SRCCOPY);
- //清理绘图工具
- DeleteObject(graph);
- DeleteObject(tBRUSH);
- DeleteObject(tFONT);
- DeleteObject(fontFAMILY);
- //释放内存画布
- ReleaseDC(NULL, hDC2);
- DeleteDC(hDC2);
- DeleteObject(hBitmap2);
- //释放CMD 画布
- ReleaseDC(hCMD, hDC);
- DeleteDC(hDC);
- }
- /*************MAIN主函数入口*************/
- int main(int argc, char** argv)
- {
- //初始化GdiPlus
- ULONG_PTR gdipludToken;
- GdiplusStartupInput gdiplusInput;
- GdiplusStartup(&gdipludToken,&gdiplusInput,NULL);
-
- //解析开关
- OptRE(argc, argv);
- //关闭Gdiplus
- GdiplusShutdown(gdipludToken);
- return 0;
- }
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