将字符串传递到SendInput（）（C ++）

Question

Due To The Inconvenience, I've moved to C# for this project, no further comments needed

I've encountered an issue during the development of a C++ tidbit, which sends keystrokes based on user input.

Upon trying to send the actual keystrokes, I am greeted with an error.

<error-type> message

I have posted a code snippet down below. Any help is very much appreciated.

/*Code snippet from program that handles actual keypresses*/
string message;
getline(cin, message);

SendInput(message);

Answer 1

Look at documentation for SendInput

You have to setup the INPUT structure, then pass array of INPUT .

#include <iostream>
#include <string>
#include <vector>
#include <Windows.h>

int main()
{
    std::wstring msg = L"ΨΦΩ, ελη, ABC, abc, 123";
    //or std::string msg = "ABCD - abcd - 1234";

    std::vector<INPUT> vec;
    for(auto ch : msg)
    {
        INPUT input = { 0 };
        input.type = INPUT_KEYBOARD;
        input.ki.dwFlags = KEYEVENTF_UNICODE;
        input.ki.wScan = ch;
        vec.push_back(input);

        input.ki.dwFlags |= KEYEVENTF_KEYUP;
        vec.push_back(input);
    }

    //Find a notepad window or another window for send
    HWND hwnd = FindWindow("Notepad", 0);
    if (hwnd)
        SetForegroundWindow(hwnd);
    else
        std::cout << "no window!\n";

    SendInput(vec.size(), vec.data(), sizeof(INPUT));
    return 0;
}

Note that ANSI is deprecated in Windows. This code with std::string works only for ASCII characters. For UNICODE compatibility use std::wstring

Answer 2

Check this out: SendInput() Keyboard letters C/C++

You can't really just pass a entire string to it.