多显示器环境下跨屏切换鼠标指针形状及大小的实现方案咨询

Hey there! Let's tackle your multi-monitor cursor customization questions step by step:

1. Can it be done with Windows settings? #

Short answer: No. Windows' native cursor settings are global—you can't set different cursor sizes or shapes for individual monitors directly through System Settings or Control Panel. All monitors will use the same cursor configuration you set system-wide.

2. Is there a mouse event/trigger to activate a script when crossing monitor borders? #

Absolutely! The most flexible and lightweight way to do this is with a tool like AutoHotkey. Here's a breakdown of the approach:

• First, retrieve the position and boundaries of each monitor using AutoHotkey's built-in SysGet command.
• Set up a timer to check your mouse position at short intervals (like every 50ms—this is barely noticeable in terms of resource usage).
• When the mouse crosses from one monitor's boundary to another, trigger a system API call to adjust the cursor size or load a different cursor file.

Here's a simple sample script to get you started (for dual monitors; you can extend this to triple easily):

; Fetch boundaries for Monitor 1 and Monitor 2
SysGet, Monitor1, Monitor, 1
SysGet, Monitor2, Monitor, 2

; Set up a timer to check mouse position every 50ms
SetTimer, CheckCursorLocation, 50

CheckCursorLocation:
    MouseGetPos, currentX, currentY
    ; Check if mouse is on Monitor 1
    if (currentX >= Monitor1Left && currentX <= Monitor1Right && currentY >= Monitor1Top && currentY <= Monitor1Bottom) {
        ; Set cursor size to 16px (adjust as needed)
        DllCall("SystemParametersInfo", UInt, 0x0057, UInt, 0, UInt, 16, UInt, 0x0002)
    }
    ; Check if mouse is on Monitor 2
    else if (currentX >= Monitor2Left && currentX <= Monitor2Right && currentY >= Monitor2Top && currentY <= Monitor2Bottom) {
        ; Set cursor size to 24px (adjust as needed)
        DllCall("SystemParametersInfo", UInt, 0x0057, UInt, 0, UInt, 24, UInt, 0x0002)
    }
return

This script runs in the background, uses almost no system resources, and switches cursor sizes instantly when you move between monitors. To change cursor shapes instead of just size, you can modify the script to load custom cursor files using similar API calls.

3. Any other light-on-resources methods? #

If you don't want to write a script, there are lightweight third-party tools designed specifically for multi-monitor cursor customization. These tools let you set different cursor sizes/shapes per monitor through a simple GUI, and they run quietly in the background with minimal resource overhead.

For the absolute lightest solution though, the AutoHotkey script above is hard to beat—it's just a tiny text file that uses a fraction of a MB of memory when running.

备注：内容来源于stack exchange，提问作者Berry Tsakala