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); 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
KEYEVENTF_UNICODE expects UTF-16 input, and separate INPUT down/up pairs for UTF-16 surrogate pairs. If you need to send non-ASCII strings, you need to convert them to this format.
for loop into a normal for loop: for(size_t i = 0; i < msg.size(); ++i) { ... input.ki.wScan = (WORD) msg[i]; ... }Check this out: SendInput() Keyboard letters C/C++
You can't really just pass a entire string to it.
INPUT at a time, it's supposed to send an array.