The CxTrend object contains the following events:
EventBeginProcessing runs at the beginning of retrieving values to be trended from the Value History Service (VHS) and updating the trend display.
CxTrend_EventBeginProcessing()
EventClick runs when the user clicks the left mouse button once on the object.
CxTrend_EventClick(SelectedTime)
| Parameter | Description |
|---|---|
| SelectedTime |
EventEndProcessing runs at the end after processing is finished, or retrieving values to be trended from the Value History Service (VHS) and updating the trend display.
CxTrend_EventEndProcessing()
EventInitialize runs when TheView is started in Run or Preview mode to allow further initialization for the control.
CxTrend_EventInitialize()
EventMaximize is run when the user selects Maximize from the right-click menu in Run mode or calls the CxTrend.Maximize method from script. When entering maximization mode, the Maximize parameter value passed in is "True." When exiting maximization mode, the Maximize parameter value passed in is "False."
CxTrend_EventMaximize(Maximize) As Boolean
| Parameter | Description |
|---|---|
| Maximize | A modifiable boolean that enlarges a trend to fill the computer screen (True) or returns the trend to its original size (False). |
EventNoteCreated is run before a note is created. This event can be triggered by selecting the Add Note menu option on a trend in Run mode.
CxTrend_EventNoteCreated(ByRef ShowNoteEditor as Boolean, ByRef CreateNote as Boolean, ByRef Note as Note)
| Parameter | Description |
|---|---|
|
ShowNoteEditor |
A modifiable boolean that determines whether the Note Editor will be displayed (True) or not (False) for the note being edited. This parameter could be used to suppress the invocation of the standard Note Editor allowing a custom Note Editor to be displayed when the event is fired. |
|
CreateNote |
A modifiable boolean that determines whether to create (True) the note in CygNet or not (False). Does nothing if ShowNoteEditor is set to True. |
|
Note |
A modifiable CxNote.Note object that represents the note being created. |
EventNoteEdited is run before a note is edited. This event can be triggered by double-clicking an annotation on a trend in Run mode.
CxTrend_EventNoteEdited(ByRef ShowNoteEditor as Boolean, ByRef UpdateNote as Boolean, ByRef Note as Note)
| Parameter | Description |
|---|---|
|
ShowNoteEditor |
A modifiable boolean that determines whether the Note Editor will be displayed (True) or not (False) for the note being edited. This parameter could be used to suppress the invocation of the standard Note Editor allowing a custom Note Editor to be displayed when the event is fired. |
|
UpdateNote |
A modifiable boolean that determines whether to update (True) the note in CygNet or not (False). Does nothing if ShowNoteEditor is set to True. |
|
Note |
A modifiable CxNote.Note object that represents the note being created. |
EventNotesChanged is run every time the number of note labels within a Trend Tool view window changes.
CxTrend_EventNotesChanged()
EventNoteSelected is run after a note label is selected or cleared.
CxTrend_EventNoteSelected(NoteTag As String, SelectState As Boolean)
| Parameter | Description |
|---|---|
| NoteTag | Returns the unique identifier of the (de)selected note in the format SITE.SERVICE~NOTENUMBER. A note's database key with no preceding zeroes makes up NOTENUMBER. |
| SelectState | Returns a value that indicates that a note label was selected (True) or cleared (False). Both parameters are required. |
(Obsolete)
EventZoom runs when the user left-clicks on a trend and continues to hold down the mouse button while drawing a zoom area.
CxTrend_EventZoom(MinTime As Date, MaxTime As Date, double MinValue, double MaxValue, MinAxis As Integer, MaxAxis As Integer)
| Parameter | Description |
|---|---|
| MinTime | |
| MaxTime | |
| MinValue | |
| MaxValue | |
| MinAxis | |
| MaxAxis |
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