windows下的复制文件程序

我刚看的时候很晕：

《windows系统编程》这本书需要巨量的google...

 

#include <windows.h>
#include <stdio.h>
#define BUF_SIZE 256
int main(int argc, LPTSTR argv[]) {
  HANDLE hIn, hOut;
  DWORD nIn, nOut;
  CHAR Buffer[BUF_SIZE];
  if(argc != 3) {
    printf("usage: cpw file1 file2\n");
    return 1;
  }

  hIn = createFile(argv[1], GENERIC_READ, 0, NULL, OPEN_EXISTING, 0, NULL);
  if(hIn == INVALID_HANDLE_VALUE) {
    printf("cannot open input file, Error: %x\n", GetLastError());
    return 2;
  }
  hOut = CreateFile(argv[2], GENERIC_WRITE, 0, NULL, CREATE_ALWAYS,
         FILE_ATTRIBUTE_NORMAL, NULL);
  if(hOut == INVALID_HANDLE_VALUE) {
    printf("cannot open output file. Error: %x\n", GetLastError());
    return 3;
  }

  while(ReadFile(hIn, Buffer, BUF_SIZE, &nIn, NULL) && nIn > 0) {
    WriteFile(hOut, Buffer, nIn, &nOut, NULL);
    if(nIn != nOut) {
      printf("Fatal write error: %x\n", GetLastError());
      return 4;
    }
  }

  CloseHandle(hIn);
  CloseHandle(hOut);
  return 0;
}