| 发表于：2008-01-04 17:27:17 楼主 |
大家好，我想写一段pim.vol的备份与恢复的代码。
备份的代码如下：
bool pimbackup（)
{
ceguid ceguidpim;
ceguid ceguidpimbackup;
//initialisation
create_invalidguid（&ceguidpim);
create_invalidguid（&ceguidpimbackup);
if（!cemountdbvolex（&ceguidpim, l"\\pim.vol", null, open_existing))
{
dword dwerro = getlasterror（);
return false;
}
if（!cemountdbvolex（ &ceguidpimbackup, l"\\pim_backup.vol", null, create_always ¦ edb_mount_flag))
{
return false;
}
handle hdatabaseenumhandle = invalid_handle_value;
if（（hdatabaseenumhandle = cefindfirstdatabaseex（&ceguidpim, 0)) == invalid_handle_value)
{
return false;
}
ceoid ceoidfind = 0;
while（ceoidfind = cefindnextdatabaseex（hdatabaseenumhandle, null))
{
handle hsession = cecreatesession（&ceguidpim);
handle hdbopened = invalid_handle_value;
hdbopened = ceopendatabaseinsession（
hsession,
&ceguidpim,
&ceoidfind,
null,
null,
cedb_autoincrement,
null);
if（hdbopened == invalid_handle_value)
{
dword error = getlasterror（);
return false;
}
// get informations
by_handle_db_information hdbopenedinfo;
hdbopenedinfo.wversion = 2; //must be set to 2
if（!cegetdbinformationbyhandle（hdbopened, &hdbopenedinfo))
{
dword dwerror = getlasterror（);
return false;
}
ceoidinfoex cddb;
ceoid ceoidfindrecorde;
cddb.wversion = 2 ; //20080104-add
ceoidgetinfoex2（&ceguidpim,ceoidfindrecorde, &cddb);
// create a copy
ceoid ceoiddbasecopy = 0;
cepropspec cepropspecbasecopy;
cepropspecbasecopy.wversion=1;
if（!（ceoiddbasecopy = cecreatedatabasewithprops（
&ceguidpimbackup,
&hdbopenedinfo.infdatabase,
0,
&cepropspecbasecopy)))
{
dword dwerro = getlasterror（);
return false;
}
//open the copy
handle hsession2 = cecreatesession（&ceguidpimbackup);
handle hdbasecopyhandle = invalid_handle_value;
hdbasecopyhandle = ceopendatabaseinsession（
hsession2,
&ceguidpimbackup,
&ceoiddbasecopy,
hdbopenedinfo.infdatabase.szdbasename,
null,
cedb_autoincrement,
null);
if（hdbasecopyhandle == invalid_handle_value)
{
return false;
}
// get informations
by_handle_db_information hdbopenedinfo2;
hdbopenedinfo2.wversion = 2;
if（!cegetdbinformationbyhandle（hdbasecopyhandle, &hdbopenedinfo2))
{
dword dwerror = getlasterror（);
return false;
}
dword dwcpt = 0;
ceoid ceoidfindrecord = 0;
word dwpropid = 0;
cepropval* buffer = null;
cepropval cepropvalseek;
dword dwsizeofbuffer = 0;
handle hheap = null;
hheap = getprocessheap（);
if（hheap == null)
return false;
while（ceoidfindrecord = cereadrecordpropsex（
hdbopened, // handle of the database
cedb_allowrealloc, // use localalloc to get the buffer
&dwpropid, // number of properties retrieved
null, // null means retrieve all properties.
（lpbyte*)&buffer, // buffer receives property data.
&dwsizeofbuffer, // handle to the heap for allocating the record when
// cedb_allowrealloc is specified
hheap)) // a handle to an application-created
dwcpt++;
if（getlasterror（) != error_no_more_items)
return false;
free（buffer);
buffer = null;
ceseekdatabaseex（hdbopened, cedb_seek_beginning, 0, 0, null);
ceoidfindrecord = 0;
dword dwnumberofrecordfound = 0;
while（dwnumberofrecordfound++ < dwcpt)
{
// find record
ceoidfindrecord = cereadrecordpropsex（
hdbopened, // handle of the database.
cedb_allowrealloc, // use localalloc to get the buffer.
&dwpropid, // number of properties retrieved
null, // null means retrieve all properties.
（lpbyte*)&buffer, // buffer receives property data.
&dwsizeofbuffer, // handle to the heap for allocating the record when
// cedb_allowrealloc is specified.
hheap); // a handle to an application-created
if（!ceoidfindrecord)
{
dword dwerror = getlasterror（);
return false;
}
// add property in backupdb
ceoid ceoidrecordadd;
ceoidrecordadd = cewriterecordprops（
hdbasecopyhandle, // handle to db
0, // 0=> add new record
dwpropid, // propid
buffer); // blob buffer record
// buffer
if（!ceoidrecordadd)
{
dword dwerror = getlasterror（);
messagebox（0, l"error", l"error", 1);
return false;
}
else
{
//messagebox（0, l"ok", l"ok", 1);
}
//free（temp);
//temp = null;
free（buffer);
buffer = null;
}
}
if（!ceflushdbvol（&ceguidpim))
return false;
if（!ceflushdbvol（&ceguidpimbackup))
return false;
if（!ceunmountdbvol（&ceguidpim))
return false;
if（!ceunmountdbvol（&ceguidpimbackup))
return false;
return true;
}
我想将通过函数cereadrecordpropsex得到的buffer作为函数cewriterecordprops最后一个参数的输入，可是总是不对，cewriterecordprops返回总是0，我用getlasterror得到的是5，即error_access_denied，不知该怎么改进，有哪位高手可以给我帮助？非常谢谢了。
如果有哪位大侠有pim.vol或cemail.vol的备份与恢复的源代码愿意给我学习一用，那就太感谢了。
期待各位的回答。。。。 |
|
|
|
|
