TdxRangeControlCustomDateTimeClientProperties.PrimaryScale Property

Specifies the primary scale on the range control‘s ruler provided by the date/time header client.

Declaration

delphi

property PrimaryScale: TdxRangeControlDateTimeScale read; write;

Property Value

Type
TdxRangeControlDateTimeScale

Remarks

The primary scale determines the measurement unit corresponding to the minimum date/time range that can be selected by using a range control integrated with the date/time header client. To change the current primary scale on the range control’s ruler, you can assign one of the scales supported by the client to the PrimaryScale property:

Value	Scale’s Measurement Unit	Synchronized with the Property Value
Scales.Day	rcduDay	Scales.Day.Active
Scales.Hour	rcduHour	Scales.Hour.Active
Scales.Minute	rcduMinute	Scales.Minute.Active
Scales.Month	rcduMonth	Scales.Month.Active
Scales.Quarter	rcduQuarter	Scales.Quarter.Active
Scales.Week	rcduWeek	Scales.Week.Active
Scales.Year	rcduYear	Scales.Year.Active

The following code example sets the minimal selectable date/time range to one hour. Note that the primary scale does not become visible automatically.

Delphi
C++

delphi

var
  ADateTimeHeaderProperties: TdxRangeControlDateTimeHeaderClientProperties;
//...
  ADateTimeHeaderProperties := dxRangeControl1.ClientProperties as TdxRangeControlDateTimeHeaderClientProperties;
  ADateTimeHeaderProperties.PrimaryScale := ADateTimeHeaderProperties.Scales.Hour;
  ADateTimeHeaderProperties.PrimaryScale.Visible := True; // Display the new primary scale on the range control's ruler if the "Hour" scale is not already visible

cpp

TdxRangeControlDateTimeHeaderClientProperties *ADateTimeHeaderProperties;
//...
  ADateTimeHeaderProperties = dynamic_cast<TdxRangeControlDateTimeHeaderClientProperties*>(dxRangeControl1->ClientProperties);
  ADateTimeHeaderProperties->PrimaryScale = ADateTimeHeaderProperties->Scales->Hour;
  ADateTimeHeaderProperties->PrimaryScale->Visible = true; // Display the new primary scale on the range control's ruler if the "Hour" scale is not already visible

Alternatively, you can set the corresponding synchronized property to True.

Note

To identify the minimum range that can be selected by using the range control integrated with the date/time header client, use the PrimaryScale.ScaleUnit property