/// <summary>
/// Send message to Snarl.
/// </summary>
/// <param name="msg"></param>
/// <returns>Return zero on failure.</returns>
private Int32 Send(SnarlMessage msg)
{
Int32 nReturn = 0; // Failure
localError = 0;
IntPtr hWnd = GetSnarlWindow();
if (!IsWindow(hWnd))
{
localError = SnarlStatus.ErrorNotRunning;
return(0);
}
IntPtr nSendMessageResult = IntPtr.Zero;
IntPtr ptrToSnarlMessage = IntPtr.Zero;
IntPtr ptrToCds = IntPtr.Zero;
try
{
COPYDATASTRUCT cds = new COPYDATASTRUCT();
cds.dwData = (IntPtr)0x534E4C02; // "SNL",2
cds.cbData = Marshal.SizeOf(typeof(SnarlMessage));
ptrToSnarlMessage = Marshal.AllocHGlobal(cds.cbData);
Marshal.StructureToPtr(msg, ptrToSnarlMessage, false);
cds.lpData = ptrToSnarlMessage;
ptrToCds = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(COPYDATASTRUCT)));
Marshal.StructureToPtr(cds, ptrToCds, false);
if (SendMessageTimeout(hWnd,
(uint)WindowsMessage.WM_COPYDATA,
(IntPtr)GetCurrentProcessId(),
ptrToCds,
SendMessageTimeoutFlags.SMTO_ABORTIFHUNG | SendMessageTimeoutFlags.SMTO_NOTIMEOUTIFNOTHUNG,
500,
out nSendMessageResult) == IntPtr.Zero)
{
// return zero on failure
localError = SnarlStatus.ErrorTimedOut;
return(0);
}
// return result and cache LastError
nReturn = unchecked ((Int32)nSendMessageResult.ToInt64()); // Avoid aritmetic overflow error
localError = (SnarlStatus)GetProp(hWnd, "last_error");
}
finally
{
Marshal.FreeHGlobal(ptrToCds);
Marshal.FreeHGlobal(ptrToSnarlMessage);
}
return(nReturn);
}
/// <summary>
/// Returns the version of Snarl running.
/// </summary>
/// <returns></returns>
public Int32 GetVersion()
{
localError = 0;
IntPtr hWnd = GetSnarlWindow();
if (!IsWindow(hWnd))
{
localError = SnarlStatus.ErrorNotRunning;
return(0);
}
return(GetProp(hWnd, "_version").ToInt32());
}
public CallbackEventArgs(SnarlStatus snarlEvent, UInt16 parameter, int msgToken)
{
SnarlEvent = snarlEvent;
MessageToken = msgToken;
Parameter = parameter;
}
public CallbackEventArgs(SnarlStatus snarlEvent, UInt16 parameter, int msgToken)
{
SnarlEvent = snarlEvent;
MessageToken = msgToken;
Parameter = parameter;
}
/// <summary>
/// Send message to Snarl.
/// </summary>
/// <param name="msg"></param>
/// <returns>Return zero on failure.</returns>
private Int32 Send(SnarlMessage msg)
{
Int32 nReturn = 0; // Failure
localError = 0;
IntPtr hWnd = GetSnarlWindow();
if (!IsWindow(hWnd))
{
localError = SnarlStatus.ErrorNotRunning;
return 0;
}
IntPtr nSendMessageResult = IntPtr.Zero;
IntPtr ptrToSnarlMessage = IntPtr.Zero;
IntPtr ptrToCds = IntPtr.Zero;
try
{
COPYDATASTRUCT cds = new COPYDATASTRUCT();
cds.dwData = (IntPtr)0x534E4C02; // "SNL",2
cds.cbData = Marshal.SizeOf(typeof(SnarlMessage));
ptrToSnarlMessage = Marshal.AllocHGlobal(cds.cbData);
Marshal.StructureToPtr(msg, ptrToSnarlMessage, false);
cds.lpData = ptrToSnarlMessage;
ptrToCds = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(COPYDATASTRUCT)));
Marshal.StructureToPtr(cds, ptrToCds, false);
if (SendMessageTimeout(hWnd,
(uint)WindowsMessage.WM_COPYDATA,
(IntPtr)GetCurrentProcessId(),
ptrToCds,
SendMessageTimeoutFlags.SMTO_ABORTIFHUNG | SendMessageTimeoutFlags.SMTO_NOTIMEOUTIFNOTHUNG,
500,
out nSendMessageResult) == IntPtr.Zero)
{
// return zero on failure
localError = SnarlStatus.ErrorTimedOut;
return 0;
}
// return result and cache LastError
nReturn = unchecked((Int32)nSendMessageResult.ToInt64()); // Avoid aritmetic overflow error
localError = (SnarlStatus)GetProp(hWnd, "last_error");
}
finally
{
Marshal.FreeHGlobal(ptrToCds);
Marshal.FreeHGlobal(ptrToSnarlMessage);
}
return nReturn;
}
/// <summary>
/// Returns the version of Snarl running.
/// </summary>
/// <returns></returns>
public Int32 GetVersion()
{
localError = 0;
IntPtr hWnd = GetSnarlWindow();
if (!IsWindow(hWnd))
{
localError = SnarlStatus.ErrorNotRunning;
return 0;
}
return GetProp(hWnd, "_version").ToInt32();
}
