63 lines
1.9 KiB
Go
63 lines
1.9 KiB
Go
package kernel32
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import (
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"unsafe"
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"golang.org/x/sys/windows"
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)
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var (
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kernel32 = windows.NewLazySystemDLL("kernel32.dll")
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procGetDynamicTimeZoneInformationSys = kernel32.NewProc("GetDynamicTimeZoneInformation")
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kernelLocalFileTimeToFileTime = kernel32.NewProc("LocalFileTimeToFileTime")
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)
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// SYSTEMTIME contains a date and time.
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// 📑 https://docs.microsoft.com/en-us/windows/win32/api/minwinbase/ns-minwinbase-systemtime
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type SYSTEMTIME struct {
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WYear uint16
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WMonth uint16
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WDayOfWeek uint16
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WDay uint16
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WHour uint16
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WMinute uint16
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WSecond uint16
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WMilliseconds uint16
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}
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// DynamicTimezoneInformation contains the current dynamic daylight time settings.
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// 📑 https://docs.microsoft.com/en-us/windows/win32/api/timezoneapi/ns-timezoneapi-dynamic_time_zone_information
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type DynamicTimezoneInformation struct {
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Bias int32
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standardName [32]uint16
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StandardDate SYSTEMTIME
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StandardBias int32
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DaylightName [32]uint16
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DaylightDate SYSTEMTIME
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DaylightBias int32
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TimeZoneKeyName [128]uint16
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DynamicDaylightTimeDisabled uint8 // BOOLEAN
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}
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// GetDynamicTimeZoneInformation retrieves the current dynamic daylight time settings.
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// 📑 https://docs.microsoft.com/en-us/windows/win32/api/timezoneapi/nf-timezoneapi-getdynamictimezoneinformation
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func GetDynamicTimeZoneInformation() (DynamicTimezoneInformation, error) {
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var tzi DynamicTimezoneInformation
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r0, _, err := procGetDynamicTimeZoneInformationSys.Call(uintptr(unsafe.Pointer(&tzi)))
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if uint32(r0) == 0xffffffff {
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return tzi, err
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}
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return tzi, nil
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}
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func LocalFileTimeToFileTime(localFileTime, utcFileTime *windows.Filetime) uint32 {
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ret, _, _ := kernelLocalFileTimeToFileTime.Call(
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uintptr(unsafe.Pointer(localFileTime)),
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uintptr(unsafe.Pointer(utcFileTime)))
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return uint32(ret)
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}
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