Differences

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--- desktop:desktop_dde [2021/12/21 17:40] – [Getting Data Into Excel] rob
+++ desktop:desktop_dde [2023/09/21 19:58] (current) – external edit 127.0.0.1
@@ Line 59: / Line 59: @@
 <value> is the data value of the account that you want, for example P&L. The valid values are shown below:
+<datatables>
+^ Value ^ Meaning ^
+| Description  | The name of the account.  |
+| Account  | The account number.  |
+| Firm  | The firm this account belongs to.  |
+| Status  | The status of this account, e.g. OK, Blocked etc.   |
+| PL  | The total P&L of all the positions for this account  |
+| UPL   | The total unrealized P&L of all the positions for this account.   |
+| RPL  | The total realized P&L of all the positions for this account.   |
+| Overnight_UPL   | The total unrealized P&L due to fills carried over from the previous trading day of all the positions for this account.   |
+| Cash   | The amount of available cash the account has available to trade with. Takes into consideration the Balance, P&L and Margin.  |
+| Net_Equity  | The balance of the account if all positions were closed. Takes into consideration the Balance and P&L.   |
+| Margin  | The total margin requirement for all the positions for this account. |
+| Balance   | The start of day balance of the account.   |
+</datatables>
+The DDE link format for position data in Excel is:
+=T4Screen|'POS_<accountid>_<marketid>'!<value>
+Where:
+<accountid> is the unique identifier for the account in T4. This does not match the account number or name. You can only obtain these by using the above method of copying the link for a value from T4 and pasting it into Excel or some other application.
+<marketid> is the unique identifier for the market in T4. This does not match any exchange published symbol. You can only obtain these by using the above method of copying the link for a value from T4 and pasting it into Excel or some other application.
+<value> is the data value of the position that you want, for example P&L or net position. The valid values are shown below:
+<datatables>
+^ Column A ^ Column B ^
+| Description| The name of the market this position is for.  |
+| Net  | The net position of this account in this market.   |
+| PL   | The total P&L of this position.  |
+| UPL   | The unrealized P&L from the open position.  |
+| RPL   | The realized P&L from the closed position.  |
+| Overnight_UPL | The unrealized P&L due to positions carried over from the previous trading day.  |
+| Margin  | The margin requirement for this position. |
+| Buys   | The total number of contracts bought.  |
+| Sells   | The total number of contracts sold.  |
+| Working_Buys  | The number of buy contracts that are working.   |
+| Working_Sells   | The number of sell contracts that are working.  |
+</datatables>
 ====== DDE Commands ======
+You can control some aspects of the T4 frontend via DDE commands. These are aimed at people programming applications within Excel that interact with T4.
+====== Opening a Contract Window======
+You can cause T4 to activate or open a Contract window with a specific market displayed. To do this you need to enter the following in a cell:
+=T4Screen|'CW_<MarketID>'!SHOW
+where <MarketID> is the id of the market to display.
+e.g. =T4Screen|'CW_CME_20130700_OZCN3_SPACE_C0680'!SHOW
+Sending this command will cause the frontend to look for the most recently used Contract window for that Contract and bring it on top of any other application, making the specified market the active market. If no Contract window is found for that Contract then it will open a new Contract window and display it with that market active.
+If you wish to repeatedly display the same market (e.g. user clicks a cell to display the contract window, then closes the contract window and clicks the cell again) then you need to replace the above cell contents with:
+=T4Screen|'CW_<MarketID>'!CLEAR
+where <MarketID> is the id of the market.
+This clears out the last command processed and will allow the previous command to be sent again as a new command.
+If the command succeeds then the value '<Command Succeeded>' will be returned to Excel, if the market is not found then '<Market Not Found>' is returned.
+====== Changing the DDE Advertise Interval ======
+You can change the timer interval that DDE advertisements are sent on. An advertisement is sent when a piece of data you are interested in has changed, e.g. last trade price. This is set at 10ms by default. If you want to slow down the updates then you can change this to be anything up to 60,000ms.
+To change the timer you need to enter the following into a cell:
+=T4Screen|'TMR_<Interval>'!SET
+where <Interval> is the timer interval to set, in milliseconds, between 10 and 60000.
+e.g. =T4Screen|'TMR_500'!SET will set the timer interval to be 500ms.
+If the command succeeds then the value '<Command Succeeded>' will be returned to Excel.
+If you close T4 desktop and reopen it then you would need to execute this command again for it to take effect.
 ====== Breaking DDE Links ======
+Excel will allow a user to manually edit excel links. This provides the opportunity for end user error in the form of a typo as Excel DDE links are case sensitive. If a typo occurs the user will have no choice but to remove the broken link and create it correctly from scratch. This is a limitation in Excel.
+An example would be if the month is changed using lower case charactors. Excel won't allow the correction of the formula and the formula will never again work.
+In Excel 2010 go to the Data tab and click Edit Links.
+A dialog will be displayed.
+Find the broken link and click "Break Link" and close the dialog.
+Use T4 to generate the correct link so that there is no chance of a typo.
+{{:desktop:breaklink.png|}}