#include "windows.h"
#include <stdio.h>

void Main(int argc, char** argv)
{
	HANDLE hFile;
	char buffer[64000];
	BOOL b;
	unsigned long bytes;
	long lastError;

	hFile = CreateFile(argv[1] ? argv[1] : argv[0], GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);

	bytes = 1;
	SetFilePointer(hFile, 0, NULL, FILE_END);
	b = ReadFile(hFile, buffer, 10, &bytes, NULL);
	lastError = GetLastError();
	printf("ReadFile:%s,%lu bytes, GetLastError:%ld\n", b ? "true" : "false", bytes, lastError);

	bytes = 2;
	b = ReadFile(hFile, buffer, 30000, &bytes, NULL);
	lastError = GetLastError();
	printf("ReadFile:%s,%lu bytes, GetLastError:%ld\n", b ? "true" : "false", bytes, lastError);

	bytes = 3;
	b = ReadFile(hFile, buffer, 40000, &bytes, NULL);
	lastError = GetLastError();
	printf("ReadFile:%s,%lu bytes, GetLastError:%ld\n", b ? "true" : "false", bytes, lastError);
}

int main(int argc, char** argv)
{
	Main(argc, argv);
	return 0;
}