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TAbTrend Members
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The following tables list the members exposed by TAbTrend.

Methods
Method 
Description 
Procedure to add a set of digit to the RecordList.
 
Procedure to add an separator at a selectable position.
 
Procedure to add a set of values to the RecordList.
 
Call BeginUpdate to inhibit refreshing until EndUpdate call. 
This method will erase all records. 
Constructor of the object.
 
deletes number of records from the begin of the list
 
Destructor of the Object. 
Converts a digit signal to a value.
 
Draws the cursor line 
Call EndUpdate to refresh the component after BeginUpdate call. 
Method to search for min-/maximum.
 
Procedure to add an record to the RecordList.
 
Method called for a full redraw of the control. 
This function will Load a record-list from file. All new item will be added to the existing trend-list.
 
This function will Load a record-list from file.
 
Procedure to move back-/forward in the list of records.
 
Use this procedure to move indicated courves up-/down.
 
Procedure to paint the selected records.
This procedure paints "RecordFrom" - "RecordTo" from the RecordList. 
Procedure to read a record in digit from the RecordList.
 
Procedure to read the DateTime of a record from the RecordList.
Reads record "RecNo" from the RecordList and returns 
Procedure to read a records "Value" from the RecordList.
 
This function will change the recording speed to Interval2 for 'NoOfRecords' times.
 
Saves the a part of the actual record-list to a file.
 
Saves the actual record-list to a file.
 
Sets the cursor line to position x + y 
Used to zoom to default range. 
Converts Value to Digital signal.
 
Used to zoom (in/out) the signals.
 
Used to zoom 'in' the signals. 
Used to zoom 'out' the signals. 
Properties
Property 
Description 
Contact and copyright notes. 
Number of the channel (1..8) used for the absolute scale indication. (right scale) 
Determines the style of the inner bevel of a component. 
Determines the style of the outer bevel of a component. 
Font for used for the caption of the component. 
Determines all information about the signal. Via this property you can set the general informations about this signal and it's used to set the value. 
Determines all information about the signal. Via this property you can set the general informations about this signal and it's used to set the value. 
Determines all information about the signal. Via this property you can set the general informations about this signal and it's used to set the value. 
Determines all information about the signal. Via this property you can set the general informations about this signal and it's used to set the value. 
Determines all information about the signal. Via this property you can set the general informations about this signal and it's used to set the value. 
Determines all information about the signal. Via this property you can set the general informations about this signal and it's used to set the value. 
Determines all information about the signal. Via this property you can set the general informations about this signal and it's used to set the value. 
Determines all information about the signal. Via this property you can set the general informations about this signal and it's used to set the value. 
Color of the cursor line. The cursor line is drawn with the Pen.Mode "pmNotMask" so that the actual color depends on the "ColorCursorLine" and the background colors. 
Color of the trend-grid. 
Color of the separation line. Used to separate parts of the records if opSeparator in Options
Color of the trend time indication. 
If true the cursor-line is shown if you move with the mouse in the trend-display. 
Pen mode of the cursor-line. 
Number of the filled channel. (0..8). You can select one channel to fill from trend-bottom until value. If you select 0 then no channel is filled. 
Flow 
This alow the curves to be displayed in a dynamic (Flow = true) or stationary state (Flow = false). In the dynamic state, the curves are updated cyclically and shifted to the left. In the stationary state, the curve is not being updated.
The property Flow has no influence to the running recording (recording is going on).
The status of the flow property has only effects if StartRecord = true. 
Number of pixel (records) between the vertical grid lines (and time indication). This number is also used if you reach the maximum records. In this case the component will erase this number of records from the begining of the record-list. 
Number of y-steps for the grid- and scale- indication 
Determines the amount of time, in milliseconds, that passes before the next record is stored. (must be >= 100) 
Determines the amount of time, in milliseconds, that passes before the next record is stored. Interval2 is used to change the record-interval for a given number of records. (must be >= 100) 
Number of the channel (1..8) used for the absolute scale indication. (left scale) 
Stores information about lower - Limit indication. 
Stores information about upper - Limit indication. 
Maximum number of records stored in the memory. Only active if Flow is true. In case that you reach the maximum the component will erase "GridXPixel" of records from the begining of the record-list. 
Occurs when the right-clicks the control or otherwise invokes the popup menu (such as using the keyboard). 
The OnInterval event occurs on interval (timer), before the trend is updated. May place routines to read/calculate the values of channel 1..8 here. 
The OnMaxRecords event occurs when the maximum number of records reached before a block of signals will be deleted. 
The OnNewCursorPos event occurs when you move the mouse to a new point within the trend. Use this event if you want to read the Value at cursor position. 
The OnRecNoChanged event occurs each time if the record-number has changed. (record(s) add, delete, load) 
 
Identifies the pop-up menu associated with the control. 
gSummary: eneral info's about record-list
These information will be updated each time if the record-number has changed. (add, delete, load) 
This property is used to start or stop recording. 
Time format string 
Property to show the Value, Time and Record number at cursor position. Read only! 
Hard-& Software A.Baecker
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