void Transact(string itemName, int wFmt, int wType, DDETransactionCallback callback) { Client.dispatcher.BeginInvoke(new Action(delegate() { if (Handle == IntPtr.Zero) { return; } int res = 0; using (var hsz = new DdeStringHandle(Client.idInst, itemName)) { using (var hData = new DdeDataHandle(DDEML.DdeClientTransaction(null, 0, Handle, hsz.Handle, wFmt, wType, DDEML.TIMEOUT_ASYNC, ref res))) { Log.Emit("dde-transact", "hConv", this.Handle, "item", itemName, "wFmt", wFmt, "wType", DDEML.GetTypeString(wType), "callback", callback != null, "id", res); if (hData.Handle == IntPtr.Zero) { var errno = DDEML.DdeGetLastError(Client.idInst); Log.Emit("dde-transact-failed", "error", DDEML.GetErrorString(errno) + " (" + errno.ToString() + ")"); if (callback != null) { callback(itemName, false, null); } this.Disconnect(); } else { if (callback != null) { if (res == 0) { callback(itemName, false, null); } else if (callback != null & res != 0) { var id = new IntPtr(res); transactions.Add(id, new Transaction(id, callback)); } } } } } })); }
public Transaction(IntPtr id, DDETransactionCallback callback) { this.Id = id; this.Timestamp = DateTime.UtcNow; this.Callback = callback; }
void Transact(string itemName, int wFmt, int wType, DDETransactionCallback callback) { Client.dispatcher.BeginInvoke(new Action(delegate() { if(Handle == IntPtr.Zero) return; int res = 0; using(var hsz = new DdeStringHandle(Client.idInst, itemName)) { using(var hData = new DdeDataHandle(DDEML.DdeClientTransaction(null, 0, Handle, hsz.Handle, wFmt, wType, DDEML.TIMEOUT_ASYNC, ref res))) { Log.Emit("dde-transact", "hConv", this.Handle, "item", itemName, "wFmt", wFmt, "wType", DDEML.GetTypeString(wType), "callback", callback != null, "id", res); if(hData.Handle == IntPtr.Zero) { var errno = DDEML.DdeGetLastError(Client.idInst); Log.Emit("dde-transact-failed", "error", DDEML.GetErrorString(errno) + " (" + errno.ToString() + ")"); if(callback != null) callback(itemName, false, null); this.Disconnect(); } else { if(callback != null) { if(res == 0) callback(itemName, false, null); else if(callback != null & res != 0) { var id = new IntPtr(res); transactions.Add(id, new Transaction(id, callback)); } } } } } })); }
public void Request(string item, DDETransactionCallback callback) { this.Transact(item, 13, DDEML.XTYP_REQUEST, callback); }
public void AdviseStop(string item, DDETransactionCallback callback) { this.Transact(item, 13, DDEML.XTYP_ADVSTOP, callback); }
public void AdviseStart(string item, DDETransactionCallback callback) { this.Transact(item, 13, DDEML.XTYP_ADVSTART | DDEML.XTYPF_NODATA | DDEML.XTYPF_ACKREQ, callback); }