Examples of using Tvtrend object in English and their translations into Polish
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Ecclesiastic
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Computer
Existing tvTrend objects are removed.
Calling the edit box for the runtime configuration of the tvTrend object.
New tvTrend objects are created and added.
The minimum value is set by ValueMin in active tvTrend object.
Existing tvTrend objects are kept.
The event fires after receiving andprocessing the data by the tvTrend object.
Then new tvTrend objects are created and added.
The data are intended for the tvTrend object whose tvTrend. .
ID"- Returns tvTrend object whose ID property equals to ID.
DlgProperties Calling edit box for runtime configuration of tvTrend object.
If some of the tvTrend objects is not connected see.
The connection is valid until the next calling the Connect method or to deleting the tvTrend object or to closing the viewer.
Each tvTrend object is uniquely identified by its ID identifier.
Maximum number of displayed points by the tvTrend object in the viewer range.
Returns the tvTrend object(that represents the trend of a variable) from the trend container.
Variable in the group of trends server from which this tvTrend object reads the data and whose trend it displays.
If the tvTrend object is connected to a data source by calling the tvTrend. .
Default- Value axis range(minimum and maximum)is set by active trend(by tvTrend object) according to its attributes ValueMin and ValueMax.
The tvTrend object doesn't exist in the viewer by default, it is created, for example, by calling the TrendsView. AddTrend method.
This object exists always in the tvTrend object it is created on the creation of the tvTrend object. .
Every trend according to their maximum and minimum- Value axis range(minimum and maximum)is set by active trend(by tvTrend object) according to its attributes ValueMin and ValueMax.
In the viewer existing tvTrend objects are overwritten by the configuration data.
After a request for the data was sent- the onReadData event fires(e.g. scroll the time axis),the event fires so many times how many tvTrend objects are connected to a server for each tvTrend object once.
Let's have a tvTrend object(in the example it is the object with the identifier t1) that is not connected to the data source.
TrendsData;"- Save only data points currently read by the viewer of the tvTrend object without the configuration of this object. .
Each tvTrend object has at least one basis tvGraph object and an access to it is made by the tvTrend. GraphDefault property.
The object of the tvPoints type is in both cases(connected or disconnected tvTrend object) the holder of data points either set by the tvPoints. AddPoints method or read from the server.
If the tvTrend object is connected to the trends server(e.g. by means of calling the Connect method), then it is possible to set the property to the value of"$default.
The event fires on viewer start orwhen basic parameter of one of the tvTrend object type has been changed if an object of the tvTrend type is created or deleted or the change is in the properties.
If the tvTrend object has already been connected to any data source(server) before writing into this property, by writing into this property the change of the connection doesn't happen only the configuration of the object changes.
