/// <summary>
/// This method is called on contact status change.
/// </summary>
/// <param name="wParam">Handle of chagned contact.</param>
/// <param name="lParam">
/// Pointer to DBContactWriteSetting structure.
/// </param>
/// <returns>Always zero.</returns>
private int ContactSettingChanged(IntPtr wParam, IntPtr lParam)
{
IntPtr changedHContact = wParam;
if (changedHContact == hContact)
{
IntPtr pDBContactWriteSetting = lParam;
var setting = new DBContactWriteSetting();
Marshal.PtrToStructure(pDBContactWriteSetting, setting);
// TODO: Check this setting name
if (setting.szSetting == "Status" &&
setting.szModule == Protocol)
{
var newStatus = (Status)setting.value.Value.wVal;
if (StatusChanged != null)
StatusChanged(this, newStatus);
}
}
return 0;
}
/// <summary>
/// Writes setting to database.
/// </summary>
/// <param name="hContact">
/// Handle of contact whose setting must be gotten.
/// </param>
/// <param name="moduleName">
/// Name of module that wrote the setting to get.
/// </param>
/// <param name="settingName">
/// Name of setting to get.
/// <param name="value">
/// Value of one of specified types: byte, ushort, short, uint, int,
/// string, byte[].
/// </param>
private void SetSetting(IntPtr hContact, string moduleName,
string settingName, object value)
{
using (var pDBContactWriteSetting =
new AutoPtr(Marshal.AllocHGlobal(
Marshal.SizeOf(typeof (DBContactWriteSetting)))))
{
var writeSetting = new DBContactWriteSetting();
writeSetting.szModule = moduleName;
writeSetting.szSetting = settingName;
var variant = new DBVariant();
// This pointer will be set if we allocate unmanaged memory to
// store the value:
AutoPtr valuePtr = null;
if (value is byte)
{
variant.type = DBVariant.DBVT_BYTE;
variant.Value.bVal = (byte)value;
}
else if (value is ushort)
{
variant.type = DBVariant.DBVT_WORD;
variant.Value.wVal = (ushort)value;
}
else if (value is short)
{
variant.type = DBVariant.DBVT_WORD;
variant.Value.sVal = (short)value;
}
else if (value is uint)
{
variant.type = DBVariant.DBVT_DWORD;
variant.Value.dVal = (uint)value;
}
else if (value is int)
{
variant.type = DBVariant.DBVT_DWORD;
variant.Value.lVal = (int)value;
}
else if (value is string)
{
variant.type = DBVariant.DBVT_WCHAR;
valuePtr = new AutoPtr(
Marshal.StringToHGlobalUni(value as string));
variant.Value.pszVal = valuePtr;
}
else if (value is byte[])
{
var blob = value as byte[];
valuePtr = new AutoPtr(Marshal.AllocHGlobal(blob.Length));
for (int i = 0; i < blob.Length; ++i)
Marshal.WriteByte(valuePtr, i, blob[i]);
variant.Value.ByteArrayValue.cpbVal = (ushort)blob.Length;
variant.Value.ByteArrayValue.pbVal = valuePtr;
}
else
throw new ArgumentException("Type of argument not " +
"supported.", "value");
writeSetting.value = variant;
Marshal.StructureToPtr(writeSetting, pDBContactWriteSetting,
false);
IntPtr result = Plugin.m_CallService(
"DB/Contact/WriteSetting",
hContact,
pDBContactWriteSetting);
// Free allocated memory:
if (valuePtr != null)
valuePtr.Dispose();
if (result != IntPtr.Zero)
throw new DatabaseException();
}
}