我的目标是让input.txt中的每一行将它们加载到一个向量中，然后每隔1秒将每个向量复制到剪贴板。
到目前为止，我可以使用getFileContent(std::string fileName, std::vector<std::string> & vecOfStrs)
如果我替换，我也可以将字符串复制到剪贴板：
cout << "Lines Copying " << endl;
与
cout << "Please enter sentence: "; cin >> AAA;
使用用户输入...
但是，当我尝试加载名为line的向量时，我将0 char(s)复制到剪贴板？
我做错了什么？任何指针或建议将不胜感激..
是：
Windows 10 64x
Microsoft Visual Studio Community 2015
Version 14.0.23107.0 D14REL
Microsoft .NET Framework
Version 4.7.02046
Visual C++ 2015 00322-20000-00000-AA355
Microsoft Visual C++ 2015
input.txt中：
The
Brown
Fox
Jumps
脚本：
// copyfilelines.cpp : Defines the entry point for the console application.
//
#include "stdafx.h"
#include <iostream>
#include <windows.h>
#include <fstream>
#include <string>
#include <vector>
#include <direct.h>
#include <conio.h>
#include <stdio.h>
#include <cstdlib>
#include <winuser.h>
#include <cmath>
#include <iomanip>
#include <complex>
void toClipboard(HWND hwnd, const std::string &s);
/*
* It will iterate through all the lines in file and
* put them in given vector then copy vector to clipboard.
*/
//1. Open file and put each line into a vector.
bool getFileContent(std::string fileName, std::vector<std::string> & vecOfStrs)
{
// Open the File
std::ifstream in(fileName.c_str());
// Check if object is valid.
if (!in)
{
std::cerr << "Cannot open the File : " << fileName << std::endl;
return false;
}
std::string str;
// Read the next line from File untill it reaches the end.
while (std::getline(in, str))
{
// Line contains string of length > 0 then save it in vector.
if (str.size() > 0)
vecOfStrs.push_back(str);
}
// Close The File.
in.close();
return true;
}
//2. Declare clipboard functions at file scope.
void toClipboard(HWND hwnd, const std::string &s) {
OpenClipboard(hwnd);
EmptyClipboard();
HGLOBAL hg = GlobalAlloc(GMEM_MOVEABLE, s.size() + 1);
if (!hg) {
CloseClipboard();
return;
}
memcpy(GlobalLock(hg), s.c_str(), s.size() + 1);
GlobalUnlock(hg);
SetClipboardData(CF_TEXT, hg);
CloseClipboard();
GlobalFree(hg);
}
int main()
{
std::vector<std::string> vecOfStr;
// Get the contents of file in a vector.
bool result = getFileContent("input.txt", vecOfStr);
if (result)
{
// Print the vector contents.
for (std::string & line : vecOfStr)
std::cout << line << std::endl;
// Copy vector to clipboard.
using namespace std;
string line;
cout << endl;
cout << endl;
cout << "Lines Copying " << endl;
cout << endl;
cout << endl;
cout << "Lines Copied To The Clipboard: ";
cout << endl;
cout << line << endl;
// 1. Strlen takes a const char*, so have to call the strings c_str() method
// (but it would be better to use len = line.length() instead)
size_t len = strlen(line.c_str());
cout << len << " char(s)" << endl;
// Get desktop windows and the call toClipboard.
HWND hwnd = GetDesktopWindow();
toClipboard(hwnd, line);
//User input processing.
//cin.clear();
//cin.ignore(255, '\n');
//cin.get();
}
return 0;
}
修改
更新了脚本
我添加了std::ostream_iterator以允许传输矢量：
std::stringstream ss;
// Populate
std::copy(vecOfStr.begin(), vecOfStr.end(), std::ostream_iterator<std::string>(ss, "\n"));
// Display
std::cout << ss.str() << std::endl;
// Copy vector to clipboard.
size_t len = strlen(ss.str().c_str());
完整更新的脚本：
流式传输input.txt的内容，并将所有流式内容复制到剪贴板。
// copyfilelines.cpp : Defines the entry point for the console application.
//
#include "stdafx.h"
#include <windows.h>
#include <fstream>
#include <string>
#include <vector>
#include <direct.h>
#include <conio.h>
#include <stdio.h>
#include <cstdlib>
#include <winuser.h>
#include <cmath>
#include <iomanip>
#include <complex>
#include <iostream>
#include <sstream>
#include <iterator>
void toClipboard(HWND hwnd, const std::string &s);
/*
* It will iterate through all the lines in file and
* put them in given vector then copy vector to clipboard.
*/
//1. Open file and put each line into a vector.
bool getFileContent(std::string fileName, std::vector<std::string> & vecOfStrs)
{
// Open the File
std::ifstream in(fileName.c_str());
// Check if object is valid.
if (!in)
{
std::cerr << "Cannot open the File : " << fileName << std::endl;
return false;
}
std::string str;
// Read the next line from File untill it reaches the end.
while (std::getline(in, str))
{
// Line contains string of length > 0 then save it in vector.
if (str.size() > 0)
vecOfStrs.push_back(str);
}
// Close The File.
in.close();
return true;
}
//2. Declare clipboard functions at file scope.
void toClipboard(HWND hwnd, const std::string &s) {
OpenClipboard(hwnd);
EmptyClipboard();
HGLOBAL hg = GlobalAlloc(GMEM_MOVEABLE, s.size() + 1);
if (!hg) {
CloseClipboard();
return;
}
memcpy(GlobalLock(hg), s.c_str(), s.size() + 1);
GlobalUnlock(hg);
SetClipboardData(CF_TEXT, hg);
CloseClipboard();
GlobalFree(hg);
}
int main()
{
std::vector<std::string> vecOfStr;
// Get the contents of file in a vector.
bool result = getFileContent("input.txt", vecOfStr);
if (result)
{
std::stringstream ss;
// Populate
std::copy(vecOfStr.begin(), vecOfStr.end(), std::ostream_iterator<std::string>(ss, "\n"));
// Display
std::cout << ss.str() << std::endl;
// Copy vector to clipboard.
size_t len = strlen(ss.str().c_str());
// Get desktop windows and the call toClipboard.
HWND hwnd = GetDesktopWindow();
toClipboard(hwnd, ss.str());
Sleep(100000);
}
return 0;
}
答案 0 :(得分：2)
忽略对cout的所有无关打印，您的代码为：
if (result)
{
// Copy vector to clipboard.
using namespace std;
string line;
size_t len = strlen(line.c_str());
// Get desktop windows and the call toClipboard.
HWND hwnd = GetDesktopWindow();
toClipboard(hwnd, line);
}
您有一个名为string的默认构造line，并将其复制到剪贴板。毫不奇怪，它不包含任何字符。我认为你需要创建一个stringstream并打印向量，然后将那个复制到剪贴板。