为何所有鼠标按键均可调节vertical_speed，而非仅按键9？

问题原因 #

你的脚本逻辑存在结构错误：Shift和Alt的参数调节分支没有嵌套在「鼠标按键9按下」的判断条件内。当ScrollLock开启时，只要触发任意鼠标按键按下事件，即使不是按键9，代码也会执行后续的Shift/Alt判断，导致所有鼠标按键都能修改vertical_speed。

修复后的代码 #

local vertical_speed = 1

function OnEvent(event, arg)
    if IsKeyLockOn("scrolllock") then
        EnablePrimaryMouseButtonEvents(true)

        if event == "MOUSE_BUTTON_PRESSED" and arg == 1 and IsMouseButtonPressed(3) then
            local frac, x, y = 0, 2

            repeat
                Sleep(10)
                x, y, frac = -x, math.modf(frac + vertical_speed)
                MoveMouseRelative(x * 2, y)
            until x > 0 and not IsMouseButtonPressed(1)
        end

        if event == "MOUSE_BUTTON_PRESSED" and arg == 9 then
            if IsModifierPressed("lshift") then
                vertical_speed = vertical_speed + 1
            elseif IsModifierPressed("lalt") then
                vertical_speed = 1
            end
        end
    end
end

修改说明 #

将Shift和Alt的状态判断代码移至if event == "MOUSE_BUTTON_PRESSED" and arg == 9 then的代码块内部，确保只有按下鼠标按键9时，才会根据Shift/Alt的按住状态调整vertical_speed参数。

内容的提问来源于stack exchange，提问作者AXIOM