The HEAD function returns the head number assigned to the Window Container in which the Mimic or Trend is being displayed (see Assign a Head Number to a Window Container in the ClearSCADA Guide to Client Administration). The HEAD function is only of any practical use on a Multi-Monitor setup.
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Function Name |
HEAD |
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Description |
Returns the head number assigned to the Window Container in which the Mimic or Trend is being displayed. The number can be: 0 - The Mimic or Trend is being displayed in WebX. 0 is returned even if there are multiple instances of the browser open. 1—10 - The Mimic or Trend is being displayed in the Window Container that has the returned value assigned to it as a head number. |
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Arguments |
HEAD() |
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Returns |
REAL The head number assigned to the Window Container in which the Mimic or Trend is being displayed, or 0 if the Mimic or Trend is displayed in WebX. For more information on integers and real values, see Number (Integer or Real). |
Example:
IIF (HEAD () <=1,1,0)
In this example, the HEAD function is used to animate the Visible animation property of a text box on a Mimic. If the Mimic is displayed in the Window Container with a head value of 1, or the WebX client, the text box will be displayed. If the Mimic is displayed any other Window Container, the text box will not be shown.