我正在尝试在 dev C++ 5.7.1 中使用graphics.h。
我已经在互联网上搜索了可用的选项。
我在包含文件夹中下载了graphics.h库,并在参数选项中选择了以下内容:
-lbgi
-lgdi32
-lcomdlg32
-luuid
-loleaut32
-lole32
我仍然无法弄清楚为什么它会向我显示这些错误:
undefined reference to `initgraph'
undefined reference to `graphresult'
undefined reference to `grapherrormsg'
undefined reference to `getmaxx'
undefined reference to `getmaxy'
undefined reference to `getmaxcolor'
undefined reference to `getcolor'
undefined reference to `circle'
undefined reference to `closegraph'
[Error] ld returned 1 exit status.
这是我的代码:
#include<iostream>
#include<graphics.h>
#include<stdlib.h>
#include<stdio.h>
//#include<conio>
int main(void)
{
/* request auto detection */
int gdriver = DETECT, gmode, errorcode;
int midx, midy;
int radius = 100;
/* initialize graphics and local variables */
initgraph(&gdriver, &gmode, "C:\\Program Files (x86)\\Dev-Cpp\\MinGW64\\include\\winbgim");
/* read result of initialization */
errorcode = graphresult();
if (errorcode != grOk) /* an error occurred */
{
printf("Graphics error: %s\n", grapherrormsg(errorcode));
printf("Press any key to halt:");
getch();
exit(1); /* terminate with an error code */
}
midx = getmaxx() / 2;
midy = getmaxy() / 2;
setcolor(getmaxcolor());
/* draw the circle */
circle(midx, midy, radius);
/* clean up */
getch();
closegraph();
return 0;
}
将以下文件下载到提到的目录中:
这里我假设你安装了Dev-Cpp C:\Dev-Cpp
http://www.cs.colorado.edu/~main/bgi/dev-c++/graphics.h http://www.cs.colorado.edu/~main/bgi/dev-c++/graphics.h目录:> C:\Dev-Cpp\includehttp://www.cs.colorado.edu/~main/bgi/dev-c++/libbgi.a http://www.cs.colorado.edu/~main/bgi/dev-c++/libbgi.a目录:> C:\Dev-Cpp\lib
创建一个新的C++项目并将“Project Options->Parameters->Linker”设置为
-lbgi
-lgdi32
-lcomdlg32
-luuid
-loleaut32
-lole32
并尝试执行此示例代码;然后查找您上面发布的代码。
#include<graphics.h>
int main( ){
initwindow( 700 , 700 , "MY First Program");
circle(200, 200, 150);
getch();
return 0;
}
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