C#WIndows CE Compact Framework 2.0设置系统时区

我想在windows CE Mobile中以编程方式更改系统时区？？我该怎么做

我读了一些帖子，但我没能做到

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有人能提供一个示例代码来实现它吗？

如果您通过DST，这很容易，但很棘手：

这有用吗

编辑：添加了TZ信息数据库信息： 看

为了获得TZ信息，我使用了以下C/C++代码：

...
typedef void (*INITCITYDB)(void);
typedef void (*UNINITCITYDB)(void);
typedef void (*LOADTZDATA)(void);
typedef void (*FREETZDATA)(void);
typedef int (*GETNUMZONES)(void);
typedef void * (*GETTZDATABYOFFSET)(int, int*);
typedef void * (*GETTZDATA)(int);
struct TZData
{
  TCHAR *Name;
  TCHAR *ShortName;
  TCHAR *DSTName;
  int GMTOffset;
  int DSTOffset;
};
...

然后用这个来获取信息

...
int getCityDB()
{
TZData *pTZ = NULL;
int index;

// load the library
HINSTANCE hLib = LoadLibrary(_T("CityDB.dll"));
if (hLib==NULL)
    return -1;
// load the CityDB functions
INITCITYDB InitCityDB = (INITCITYDB)GetProcAddress(
        hLib, _T("InitCityDb"));
UNINITCITYDB UninitCityDB = (UNINITCITYDB)GetProcAddress(
        hLib, _T("UninitCityDb"));
LOADTZDATA ClockLoadAllTimeZoneData = (LOADTZDATA)GetProcAddress(
        hLib, _T("ClockLoadAllTimeZoneData"));
FREETZDATA ClockFreeAllTimeZoneData = (FREETZDATA)GetProcAddress(
        hLib, _T("ClockFreeAllTimeZoneData"));
GETNUMZONES ClockGetNumTimezones = (GETNUMZONES)GetProcAddress(
        hLib, _T("ClockGetNumTimezones"));
GETTZDATABYOFFSET ClockGetTimeZoneDataByOffset =
        (GETTZDATABYOFFSET)GetProcAddress(hLib, _T("ClockGetTimeZoneDataByOffset"));
GETTZDATA ClockGetTimeZoneData = (GETTZDATA)GetProcAddress(
        hLib, _T("ClockGetTimeZoneData"));

// Init the library
InitCityDB();

// load the TZ data
ClockLoadAllTimeZoneData();

// find out how many zones are defined
int zoneCount = ClockGetNumTimezones();
...

现在，您可以遍历所有数据，有关详细信息，请参阅github代码：

...
wsprintf(wBuff, L"=================CityDB====================\n");
wcstombs(buff, wBuff, sizeof(wBuff)*sizeof(TCHAR));
WriteFile(hFile, buff, strlen(buff), &numWritten, NULL);
// interate through them all
for(int zone = 0 ; zone < zoneCount ; zone++)
{
    // these are pointers to a timezone data struct
    pTZ = (TZData*)ClockGetTimeZoneDataByOffset(zone, &index);

    wsprintf(wBuff, L"index: %i\n", index );
    wcstombs(buff, wBuff, sizeof(wBuff)*sizeof(TCHAR));
    WriteFile(hFile, buff, strlen(buff), &numWritten, NULL);

    wsprintf(wBuff, L"\tshort name: %s\n", pTZ->ShortName  );
    wcstombs(buff, wBuff, sizeof(wBuff)*sizeof(TCHAR));
    WriteFile(hFile, buff, strlen(buff), &numWritten, NULL);

    wsprintf(wBuff, L"\tname: %s\n", pTZ->Name );
    wcstombs(buff, wBuff, sizeof(wBuff)*sizeof(TCHAR));
    WriteFile(hFile, buff, strlen(buff), &numWritten, NULL);

    wsprintf(wBuff, L"\tGMT offset: %i\n", pTZ->GMTOffset  );
    wcstombs(buff, wBuff, sizeof(wBuff)*sizeof(TCHAR));
    WriteFile(hFile, buff, strlen(buff), &numWritten, NULL);

    wsprintf(wBuff, L"\tdst name: %s\n", pTZ->DSTName  );
    wcstombs(buff, wBuff, sizeof(wBuff)*sizeof(TCHAR));
    WriteFile(hFile, buff, strlen(buff), &numWritten, NULL);

    wsprintf(wBuff, L"\tDST offset: %i\n", pTZ->DSTOffset );
    wcstombs(buff, wBuff, sizeof(wBuff)*sizeof(TCHAR));
    WriteFile(hFile, buff, strlen(buff), &numWritten, NULL);
}
CloseHandle(hFile);

// unload the TZ data
ClockFreeAllTimeZoneData();

// uninit the library
UninitCityDB();
...

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另请参见我在

上的帖子，了解其工作原理。我仍然有疑问。我在哪里可以得到所有时区的所有偏差值和标准名称的列表？？

...
wsprintf(wBuff, L"=================CityDB====================\n");
wcstombs(buff, wBuff, sizeof(wBuff)*sizeof(TCHAR));
WriteFile(hFile, buff, strlen(buff), &numWritten, NULL);
// interate through them all
for(int zone = 0 ; zone < zoneCount ; zone++)
{
    // these are pointers to a timezone data struct
    pTZ = (TZData*)ClockGetTimeZoneDataByOffset(zone, &index);

    wsprintf(wBuff, L"index: %i\n", index );
    wcstombs(buff, wBuff, sizeof(wBuff)*sizeof(TCHAR));
    WriteFile(hFile, buff, strlen(buff), &numWritten, NULL);

    wsprintf(wBuff, L"\tshort name: %s\n", pTZ->ShortName  );
    wcstombs(buff, wBuff, sizeof(wBuff)*sizeof(TCHAR));
    WriteFile(hFile, buff, strlen(buff), &numWritten, NULL);

    wsprintf(wBuff, L"\tname: %s\n", pTZ->Name );
    wcstombs(buff, wBuff, sizeof(wBuff)*sizeof(TCHAR));
    WriteFile(hFile, buff, strlen(buff), &numWritten, NULL);

    wsprintf(wBuff, L"\tGMT offset: %i\n", pTZ->GMTOffset  );
    wcstombs(buff, wBuff, sizeof(wBuff)*sizeof(TCHAR));
    WriteFile(hFile, buff, strlen(buff), &numWritten, NULL);

    wsprintf(wBuff, L"\tdst name: %s\n", pTZ->DSTName  );
    wcstombs(buff, wBuff, sizeof(wBuff)*sizeof(TCHAR));
    WriteFile(hFile, buff, strlen(buff), &numWritten, NULL);

    wsprintf(wBuff, L"\tDST offset: %i\n", pTZ->DSTOffset );
    wcstombs(buff, wBuff, sizeof(wBuff)*sizeof(TCHAR));
    WriteFile(hFile, buff, strlen(buff), &numWritten, NULL);
}
CloseHandle(hFile);

// unload the TZ data
ClockFreeAllTimeZoneData();

// uninit the library
UninitCityDB();
...

index: 95
short name: GMT+1 Prague,Budapest
name: Central Europe Standard Time
GMT offset: -60
dst name: Central Europe Daylight Time
DST offset: 0
...

index: 110
short name: GMT+1 Berlin,Rome
name: W. Europe Standard Time
GMT offset: -60
dst name: W. Europe Daylight Time
DST offset: 0