Windows和c++检测屏幕上的手指触摸？

#include <Windows.h>

LRESULT CALLBACK WindowProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
    switch (uMsg)
    {
        case WM_TOUCH:
        {
            UINT numInputs = LOWORD(wParam);
            PTOUCHINPUT pInputs = new TOUCHINPUT[numInputs];

            if (GetTouchInputInfo((HTOUCHINPUT)lParam, numInputs, pInputs, sizeof(TOUCHINPUT)))
            {
                for (UINT i = 0; i < numInputs; ++i)
                {
                    TOUCHINPUT touch = pInputs[i];
                    // 处理手指触摸事件
                    // 可以获取触摸点的坐标、压力等信息
                }

                CloseTouchInputHandle((HTOUCHINPUT)lParam);
            }

            delete[] pInputs;
            return 0;
        }
        // 其他消息处理...

        default:
            return DefWindowProc(hwnd, uMsg, wParam, lParam);
    }
}

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
{
    // 创建窗口
    HWND hwnd = CreateWindowEx(0, L"WindowClass", L"Touch Detection", WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, 800, 600, NULL, NULL, hInstance, NULL);

    // 注册触摸设备
    RegisterTouchWindow(hwnd, 0);

    // 显示窗口
    ShowWindow(hwnd, nCmdShow);

    // 消息循环
    MSG msg = {};
    while (GetMessage(&msg, NULL, 0, 0))
    {
        TranslateMessage(&msg);
        DispatchMessage(&msg);
    }

    return 0;
}