FindDBCallback(object sender, System.EventArgs e)
{
INVOKE_ENUMDB it = this.m_thrdFindDB.itReason;
string strIn = m_thrdFindDB.strBuffer;
switch (it)
{
case INVOKE_ENUMDB.ENUMDB_NEWVOLUME:
this.lboxDatabases.Items.Add(strIn);
break;
case INVOKE_ENUMDB.ENUMDB_NEWDATABASE:
this.lboxDatabases.Items.Add(strIn);
break;
case INVOKE_ENUMDB.ENUMDB_COMPLETE:
// Enable Find buttons.
this.cmdFindDatabases.Enabled = true;
this.cmdFindVolumes.Enabled = true;
break;
case INVOKE_ENUMDB.STATUS_MESSAGE:
MessageBox.Show(strIn, m_strAppName);
break;
}
}
private void ThreadMainEnumDB()
{
if (m_bVolume) // Enumerate volumes.
{
Guid guid = new Guid("ffffffffffffffffffffffffffffffff");
int cch = 32;
string str = new String('\0', cch);
while (Rapi.CeEnumDBVolumes(ref guid, str, cch) ==
Rapi.RAPI_TRUE && m_bContinue)
{
strBuffer = str;
itReason = INVOKE_ENUMDB.ENUMDB_NEWVOLUME;
m_ctlInvokeTarget.Invoke(m_deleCallback);
}
}
else // Enumerate databases.
{
short cRecords = 0;
IntPtr pfdbAll = IntPtr.Zero;
Rapi.CeFindAllDatabases(0,
Rapi.FAD.FAD_NAME | Rapi.FAD.FAD_NUM_RECORDS,
ref cRecords,
ref pfdbAll);
IntPtr pfdb = pfdbAll;
while (cRecords > 0)
{
// Set pointer to next record.
Rapi.CEDB_FIND_DATA dbfd =
(Rapi.CEDB_FIND_DATA)
Marshal.PtrToStructure(
pfdb, typeof(Rapi.CEDB_FIND_DATA));
// Post name to listbox.
strBuffer = dbfd.DbInfo.szDbaseName + " (" +
dbfd.DbInfo.wNumRecords + " records)";
itReason = INVOKE_ENUMDB.ENUMDB_NEWDATABASE;
m_ctlInvokeTarget.Invoke(m_deleCallback);
// Get ready for next loop.
pfdb = (IntPtr)((int)pfdb + Marshal.SizeOf(dbfd));
cRecords--;
} // while
// Free memory returned by CeFindAllDatabases.
Rapi.CeRapiFreeBuffer(pfdbAll);
} // if
// Notify main thread that we are done.
itReason = INVOKE_ENUMDB.ENUMDB_COMPLETE;
m_ctlInvokeTarget.Invoke(m_deleCallback);
// Mark thread as done.
m_thrd = null;
}
