从热键启动时,将输入发送到Ctrl+C文本不起作用

当前正在使用此代码在Windows 10中当前打开的窗口中复制选定的文本。如果我在目标程序(记事本)有焦点时自行运行此代码,则此代码工作正常。记事本中选定的文本被复制到数据变量OK中。

wchar_t title[MAX_PATH];
HWND target_window = GetForegroundWindow();
GetWindowText(target_window, title, MAX_PATH);
std::wcout << "Target window is '" << title << "'" << std::endl;

// Send Control + C
int key_count = 4;

INPUT* input = new INPUT[key_count];
for (int i = 0; i < key_count; i++)
{
    input[i].ki.dwFlags = 0;
    input[i].type = INPUT_KEYBOARD;
}

input[0].ki.wVk = VK_CONTROL;
input[0].ki.wScan = MapVirtualKey(VK_CONTROL, MAPVK_VK_TO_VSC);
input[1].ki.wVk = 0x43; // Virtual key code for 'c'
input[1].ki.wScan = MapVirtualKey(0x43, MAPVK_VK_TO_VSC);
input[2].ki.dwFlags = KEYEVENTF_KEYUP;
input[2].ki.wVk = input[0].ki.wVk;
input[2].ki.wScan = input[0].ki.wScan;

input[3].ki.dwFlags = KEYEVENTF_KEYUP;
input[3].ki.wVk = input[1].ki.wVk;
input[3].ki.wScan = input[1].ki.wScan;

if (!SendInput(key_count, (LPINPUT)input, sizeof(INPUT)))
{
    // TODO: error handling
}
else
{
    // not ideal but not sure of another way to wait for SendInput to complete
    Sleep(100); 
    if (OpenClipboard(NULL))
    {
        HGLOBAL hglb = GetClipboardData(CF_UNICODETEXT);
        LPWSTR lpwstr = (LPWSTR)(GlobalLock(hglb));
        std::wstring data(lpwstr);
        GlobalUnlock(hglb);
        CloseClipboard();
        // do something with selected text in data
    }
    else
    {
        // TODO: error handling
    }
}

if (RegisterHotKey(
    NULL,
    1,
    MOD_CONTROL | MOD_ALT | MOD_NOREPEAT,
    VK_OEM_2))  // back slash question mark key
{
    std::cout << "Hotkey 'Ctrl+Alt+/' registered, using MOD_NOREPEAT flag\n";
}

MSG msg = { 0 };
while (GetMessage(&msg, NULL, 0, 0) != 0)
{
    if (msg.message == WM_HOTKEY)
    {
        std::cout << "WM_HOTKEY received\n";

        // Call function to COPY TEXT here

        if (RegisterHotKey(
            NULL,
            1,
            MOD_CONTROL | MOD_ALT | MOD_NOREPEAT,
            VK_OEM_2))  // back slash question mark key
        {
            std::cout << "Hotkey 'Ctrl+Alt+/' registered, using MOD_NOREPEAT flag\n";
        }
    }
}

现在,在这两种情况下, GetWindowText()

Ctrl+C 正在被传递到窗口,它就是。看起来像 Ctrl+C 正在传递,但没有复制。