golang windows 判斷鎖屏

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golang windows 判斷是否鎖屏：

package osapiimport (    "syscall"    "unsafe"    "github.com/lxn/win")const (    DESKTOP_SWITCHDESKTOP = 0x0100 // The access to the desktop)// get desktop locked statusfunc ScreenIsLocked() bool {    // load user32.dll only once    user32 := win.MustLoadLibrary("user32.dll")    openDesktop := win.MustGetProcAddress(user32, "OpenDesktopW")    closeDesktop := win.MustGetProcAddress(user32, "CloseDesktop")    switchDesktop := win.MustGetProcAddress(user32, "SwitchDesktop")    var lpdzDesktopPtr uintptr = uintptr(unsafe.Pointer(syscall.StringToUTF16Ptr("Default"))) //string    var dwFloatsPtr uintptr = 0                                                               //uint32    var fInheritPtr uintptr = 0                                                               //boolean    var dwDesiredAccessPtr uintptr = uintptr(DESKTOP_SWITCHDESKTOP)                           //uint32    r1, _, _ := syscall.Syscall6(openDesktop, 4, lpdzDesktopPtr, dwFloatsPtr, fInheritPtr, dwDesiredAccessPtr, 0, 0)    if r1 == 0 {        panic("get desktop locked status error")    }    res, _, _ := syscall.Syscall(switchDesktop, 1, r1, 0, 0)    // clean up    syscall.Syscall(closeDesktop, 1, r1, 0, 0)    return res != 1}