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//C ½Ó¿Ú
extern "C"
{
  TESSDLL_API int __cdecl GetTessText(const char *imagefile, char *text);  
}

//ÎÒÔÚC#ÖÐÉùÃ÷
//µ÷ÓÃC DLL Öеĺ¯Êý
[DllImport("OCRapi.dll", EntryPoint = "GetTessText", CharSet = CharSet.Ansi,
  CallingConvention = CallingConvention.Cdecl)]
 public static extern int GetTessText(char[] imagefile, char[] text);


µ÷ÓôúÂ룺
char[] imagefile = "D:\\My Documents\\\baidu\\1.bmp".ToCharArray();
char[] textResult = new char[256];
int i = OCRAPI.GetTessText(imagefile, textResult);

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textResult µÃ²»µ½·µ»ØÖµ



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C# code:
[DllImport("OCRapi.dll", EntryPoint = "GetTessText", CharSet = CharSet.Ansi,
CallingConvention = CallingConvention.Cdecl)]
public static extern int GetTessText(string imagefile, string text);

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main()
{
int a,b,sum;
a=1;b=2;
sum=a+b;
printf("sum is %d\n");
}


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