Win32 SendInput 鼠标移动延迟和冻结

Question

我尝试在执行物理鼠标单击时使用 SendInput 移动鼠标（在 Windows 10 上）。如果我单击一次或两次它工作正常，但如果快速连续单击示例 6 次鼠标滞后几秒钟然后程序停止响应。发生这种情况有什么明显的原因吗？

（已编辑）

#define WIN32_LEAN_AND_MEAN
#include <windows.h>

LRESULT CALLBACK MouseHook(int, WPARAM, LPARAM);

int WINAPI wWinMain(HINSTANCE hInstance, HINSTANCE, LPWSTR, int)
{
    HHOOK hook = SetWindowsHookEx(WH_MOUSE_LL, MouseHook, NULL, 0);
    MessageBox(NULL, L"Hello", L"Hello", MB_OK);
    UnhookWindowsHookEx(hook);

    return 0;
}

LRESULT CALLBACK MouseHook(int nCode, WPARAM wParam, LPARAM lParam) {
    if (nCode == HC_ACTION) {
        switch (wParam) {
        case WM_RBUTTONUP:
            INPUT buffer;
            ZeroMemory(&buffer, sizeof(buffer));
            buffer.type = INPUT_MOUSE;
            buffer.mi.dx = 0;
            buffer.mi.dy = 10;
            buffer.mi.mouseData = 0;
            buffer.mi.dwFlags = MOUSEEVENTF_MOVE;
            buffer.mi.time = 0;
            buffer.mi.dwExtraInfo = 0;
            SendInput(1, &buffer, sizeof(INPUT));
        }
    }

    return CallNextHookEx(NULL, nCode, wParam, lParam);
}

Answer 1

使用原始输入示例：

#include <windows.h>
#include <iostream>

using namespace std;
BOOL registerTouchpadForInput(HWND hWnd)
{
    RAWINPUTDEVICE rid;
    rid.dwFlags = RIDEV_NOLEGACY | RIDEV_INPUTSINK;
    rid.usUsagePage = 1;                            
    rid.usUsage = 2;
    rid.hwndTarget = hWnd;
    return RegisterRawInputDevices(&rid, 1, sizeof(rid));
}
void getinputdata(LPARAM lparam)
{
    HRAWINPUT hInput = (HRAWINPUT)lparam;
    RAWINPUT input = { 0 };

    UINT size = sizeof(RAWINPUT);
    GetRawInputData(hInput, RID_INPUT,&input, &size,sizeof(RAWINPUTHEADER));
    if (RIM_TYPEMOUSE == input.header.dwType)
    {
        if (input.data.mouse.usButtonFlags & RI_MOUSE_RIGHT_BUTTON_DOWN)
        {
            INPUT buffer;
            ZeroMemory(&buffer, sizeof(buffer));
            buffer.type = INPUT_MOUSE;
            buffer.mi.dx = 0;
            buffer.mi.dy = 10;
            buffer.mi.mouseData = 0;
            buffer.mi.dwFlags = MOUSEEVENTF_MOVE;
            buffer.mi.time = 0;
            buffer.mi.dwExtraInfo = 0;
            SendInput(1, &buffer, sizeof(INPUT));
        }
    }
    return;
}

static LRESULT CALLBACK NVTouch_WindowProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    BOOL  registrationStatus = false;
    switch (message)
    {
    case WM_CREATE:
        registrationStatus = registerTouchpadForInput(hwnd);
        break;
    case WM_DESTROY:
        PostQuitMessage(0);
        break;
    case WM_INPUT:
        getinputdata(lParam);
        return DefWindowProc(hwnd, message, wParam, lParam);
    default:
        return DefWindowProc(hwnd, message, wParam, lParam);
    }
    return 0;
}

int main()
{
    WNDCLASSEX wndclass = {
        sizeof(WNDCLASSEX),
        CS_DBLCLKS,
        NVTouch_WindowProc,
        0,
        0,
        GetModuleHandle(0),
        LoadIcon(0,IDI_APPLICATION),
        LoadCursor(0,IDC_ARROW),
        HBRUSH(COLOR_WINDOW + 1),
        0,
        L"myclass",
        LoadIcon(0,IDI_APPLICATION)
    };
    bool isClassRegistered = false;
    isClassRegistered = RegisterClassEx(&wndclass);
    if (isClassRegistered)
    {
        HWND window = CreateWindow(wndclass.lpszClassName, NULL, 0, 0, 0, 0, 0, HWND_MESSAGE, NULL, GetModuleHandle(0), NULL);
        if (window)
        {
            ShowWindow(window, SW_SHOWDEFAULT);
            MSG msg;
            while (GetMessage(&msg, 0, 0, 0))
            {
                TranslateMessage(&msg);
                DispatchMessage(&msg);
            }
        }
    }
}

Win32 SendInput 鼠标移动延迟和冻结

Win32 SendInput mousemove lag and freeze

c++

winapi

sendinput