file
The Origin C file class provides read/write access to binary files using unbuffered io (immediate disk access) similar to the MFC CFile class. See also the stdioFile class for buffered stream io to text files.
EX1
//generate a binary file with 4 integer void file_ex1() { char szTemp[MAXFULLPATH]; GetTempPath(MAXFULLPATH, szTemp); // Get temp folder path. string strFile = szTemp + "\\test.Dat"; file ff(strFile, file::modeCreate | file::modeWrite); // Create a new write only file. int bb[4] = {1, 2, 3, 4}; int iSize = sizeof(bb); ff.Write(bb,iSize); ff.Close(); }
EX2
//generate a binary file of unsigned short in the form of cell=r + c //you can read this type of file into Origin with the impbin2d X-Function void file_ex2(int nCols = 128, int nRows = 10) { string strFile = GetAppPath() + "test" + nCols + "x" + nRows + ".img"; file ff; if(ff.Open(strFile, file::modeCreate | file::modeWrite)) { for(int ii = 0; ii < nRows; ii++) { for(int jj = 0; jj < nCols; jj++) { unsigned short us = ii + jj; ff.Write(&us, 2); } } ff.Close(); printf("file successfully created:\n%s\n", strFile); } else printf("failed to create file:%s\n", strFile); }
origin.h
Name | Brief | Example |
---|---|---|
Close | Close the file associated with the indicated file object. | Examples |
file | Set the public data member m_hFile to a null value. | Examples |
Flush | Force data remaining in the file buffer to be written to the file. | Examples |
GetHandle | Get the handle of current open file. | Examples |
GetLastError | Get the value of the last error that occured. | Examples |
GetLength | Obtains the current logical length of the file in bytes. | Examples |
GetPosition | Get the current value of the file pointer which is an offset from the beginning of the file. | Examples |
IsOpen | Check file object is open or not, when use a method of File object which is not open will lead a runtime error. Use this function before you call the method of File object. | Examples |
Open | Open a file returning FALSE or 0 on failure and TRUE or a non-zero on success. | Examples |
Read | Read data into a buffer from the file associated with the file object. | Examples |
ReadFloat | Read a set of float data from file | Examples |
ReadInt | It is used to support Little Endian and Big Endian read and write binary data. | Examples |
Seek | Moves the pointer to the current file position as specified. Seek enables random access within a file. | Examples |
SeekToBegin | Sets the file pointer value to the beginning of the file. This is the same as file::Seek(0, file::begin). | Examples |
SeekToEnd | Sets the file pointer value to the end of the file. This is the same as file::Seek(0, file::end). | Examples |
Write | Write data from a buffer into the file associated with the file object. | Examples |
WriteFloat | Write a set of float data into file | Examples |
WriteInt | Write a set of integer data into file | Examples |