IDMLabel Interface

Version: 2.1
Dispatch interface for DMLabel Object

GUID: {673A9FFA-9A0B-11D4-B2A4-FD6847C75367}

IDMLabel interface implemented only for backward compatibility with earlier versions of DM2003. Use IDMLabel2 interface instead.

Members:
Kind Name ID Description
Text 0 Change label text
IsVisible 1 Control label visibility
LabelKind 2 Change visual label style
XAxis 3 Change X axis (top or bottom)
YAxis 4 Change Y axis (left or right)
XMin 5 Change TPlotLabel.X1 coordinate
XMax 6 Change TPlotLabel.X2 coordinate
YMin 7 Change TPlotLabel.Y1 coordinate
YMax 8 Change TPlotLabel.Y2 coordinate
Font -512 Change label font
LineType 9 Change label pen (line) type
LineWidth 10 Change label pen (line) width
Color -501 Change label pen (line) color
LabelColor 11 Change label background color
Document 12 Returns owner document object
CopyToClipboard 13 Copies label object to the clipboard
PasteFromClipboard 14 Paste label object from the clipboard
CanPaste 15 True if clipboard has label object
Select 16 Selects label (in label edit mode only)
Move 17 Changes label coordinates

Syntax:
property Text: BSTR

Applies to:
B740X, DMComboBox, DMExpressionComboBox, DMFloatEdit, DMLabel, DMListBox, DMListItems, DMNotes, DMSerie, DMSpinEdit, DMStrings, E712X, HP4191X

For DMForms ActiveX controls (DMComboBox, DMExpressionComboBox, DMListBox, DMFloatEdit, DMSpinEdit) this property changes the text in the appropriate control.

For collection objects (DMListItems, DMStrings), this property represents the contents of the collection as a single block of text. Lines are separated by standard CRLF characters.

For DMNotes, this property also operates with the editor's data as a whole.

For DMSerie and DMLabel objects, Text is just a label.

For device driver ActiveX controls (HP4191X, B740X and E712X) this property should be used to read and write data from/to the device.

Syntax:
property IsVisible: Boolean

Applies to:
CoCPortLib2, CPortLibX2, DMAxis, DMClientSocket, DMComboBox, DMComPort, DMComTerminal, DMDigitizer, DMExpressionComboBox, DMFloatEdit, DMIEEE488Port, DMLabel, DMListBox, DMSerie, DMSpinEdit

IsVisible property determines whether appropriate object is visible on the screen. Note that for ActiveX controls embedded in the HTML page, you can also change Object.style.visibility property. Some controls like DMClientSocket, DMIEEE488Port and DMComPort are invisible by design and don't implement this property.

Syntax:
property LabelKind: User_Defined

Applies to:
DMLabel

This property determines label kind. Possible values are listed in the PlotLabelType enumeration.

Syntax:
property XAxis: IDispatch

Applies to:
DMLabel, DMPlot, DMSerie

For DMPlot, XAxis returns reference to the DMAxis object that represents bottom plot axis.

For DMSerie and DMLabel, XAxis property returns reference to the DMAxis object and allows you to change horizontal axis associated with given label or series (which is used to introduce coordinate system for rendering series points or label object).

Example:

dim Plt
set Plt=Server.ActiveDocument.Plot
Plt.CurrentSerie.XAxis=Plt.XAxis2
Plt.Labels(0).XAxis=Plt.XAxis2

Syntax:
property YAxis: IDispatch

Applies to:
DMLabel, DMPlot, DMSerie

For DMPlot, YAxis returns reference to the DMAxis object that represents left plot axis.

For DMSerie and DMLabel, YAxis property returns reference to the DMAxis object and allows you to change vertical axis associated with given label or series (which is used to introduce coordinate system for rendering series points or label object).

Example:

dim Plt
set Plt=Server.ActiveDocument.Plot
Plt.CurrentSerie.YAxis=Plt.YAxis2
Plt.Labels(0).YAxis=Plt.YAxis2

Syntax:
property XMin: Double

Applies to:
DMDigitizer, DMLabel

Syntax:
property XMax: Double

Applies to:
DMDigitizer, DMLabel

Syntax:
property YMin: Double

Applies to:
DMDigitizer, DMLabel

Syntax:
property YMax: Double

Applies to:
DMDigitizer, DMLabel

Syntax:
property Font: PTR

Applies to:
DMAxis, DMComboBox, DMExpressionComboBox, DMFloatEdit, DMLabel, DMListBox, DMSpinEdit, DMWorksheet

This property should be used to change font of the selected object. It returns reference to the special IFontDisp interface pointer. See Microsoft OLE documentation for more details.

Example:

 
Server.ActiveDocument.Worksheet.Font.Name
Server.ActiveDocument.Worksheet.Font.Size
Server.ActiveDocument.Worksheet.Font.Bold
Server.ActiveDocument.Worksheet.Font.Italic
Server.ActiveDocument.Worksheet.Font.Underline
Server.ActiveDocument.Worksheet.Font.Strikethrough
Server.ActiveDocument.Worksheet.Font.Weight
Server.ActiveDocument.Worksheet.Font.Charset
Server.ActiveDocument.Worksheet.Font.Color 'absent!

Syntax:
property LineType: User_Defined

Applies to:
DMLabel, DMSerie

This property determines line type. Possible values listed in the PlotLineType enumeration.

Syntax:
property LineWidth: Long

Applies to:
DMAxis, DMLabel, DMSerie

LineWidth property determines the width of object's line or contour.

Syntax:
property Color: User_Defined

Applies to:
DMAxis, DMComboBox, DMDigitizer, DMExpressionComboBox, DMFloatEdit, DMLabel, DMListBox, DMPlot, DMSerie, DMSpinEdit, DMWorksheet

This property should be used to change color of the selected object.

Syntax:
property LabelColor: User_Defined

Applies to:
DMLabel

Syntax:
r/o property Document: IDispatch

Applies to:
DMAxis, DMContainer, DMLabel, DMPlot, DMSerie, DMWorksheet

Document property returns DMDocument object which is an owner of the given object. So that, you don't need to cycle through the object collections to determine the object's owner. Keep in mind that in DM, VCL objects may be destroyed while appropriate COM objects still alive since their lifecycle is governed by reference counting mechanism. Such COM objects with killed VCL owner become a "zombie" - they have no actual data, their methods do nothing and properties return empty data.

Examples:

sub TestSerie
dim Serie
  if Server.ActiveDocument is Nothing then
    MsgBox "NULL document"
  else
    set Serie=Server.ActiveDocument.Plot.CurrentSerie
    MsgBox Serie.Document.WindowCaption  
  end if
end sub

sub TestAxis
dim Axis
  set Axis=Server.ActiveDocument.Plot.XAxis2
  MsgBox Axis.Document.WindowCaption
end sub

sub TestContainer
dim Container
  set Container=Server.ActiveDocument.Container
  MsgBox Container.Document.WindowCaption
end sub

sub TestPlot
dim Plot
  set Plot=Server.ActiveDocument.Plot
  MsgBox Plot.Document.WindowCaption
end sub

sub TestWorksheet
dim Worksheet
  set Worksheet=Server.ActiveDocument.Worksheet
  MsgBox Worksheet.Document.WindowCaption
end sub

dim Worksheet1
set Worksheet1=Server.ActiveDocument.Worksheet

sub TestWorksheet1
  MsgBox Worksheet1.Document.WindowCaption
end sub

dim Serie1
set Serie1=Server.ActiveDocument.Plot.CurrentSerie

sub TestSerie1
  if Serie1.Document is Nothing then
    MsgBox "NULL document"
  else
    MsgBox Serie1.Document.WindowCaption  
  end if
end sub

Syntax:
function CopyToClipboard: VOID

Applies to:
DMLabel, DMNotes, DMPlot, DMSerie, DMWorksheet

For DMNotes, this method copies selected text on the clipboard as in any text editor.

For DMPlot, CopyToClipboard has a parameters. Mode parameter determine what data will be copied; possible values listed in the PlotCopyModes enumeration. UseTabs parameter defines what character will be used as separator between values: some programs can correctly paste values only if they are separated by tabstop character. Keep in mind that CopyToClipboard acts only on the data in the current plot serie, and only points whose coordinates are within the selection area are copied. If plot selection is not visible, all points or data elements are copied.

For both DMSerie and DMLabel, properties of the object are copied in the special binary format.

For DMWorksheet, it copies selected worksheet cells to the clipboard as a simple text block. UseTabs parameter also defines what character will be used as separator between values. It also puts selection data range as a serie object.

You can use system Clipboard Viewer utility to investigate what data formats are used at every case.

Syntax:
function PasteFromClipboard: VOID

Applies to:
DMDigitizer, DMLabel, DMNotes, DMPlot, DMSerie, DMWorksheet

For DMDigitizer, this method inserts into the digitizer control the picture from the clipboard.

For DMNotes, PasteFromClipboard operates like in any text editor.

For DMSerie, PasteFromClipboard has a parameter. If DataOnly=True, visual attributes like colors, point size etc. are not assigned. Keep in mind that this method can correctly paste only series copied from the same instance of DM, because it performs search to assign Container.

For DMLabel, this method is just a pair for CopyToClipboard. In addition, Rectangle - type label can paste (and display) metafiles (and bitmaps).

For DMPlot, PasteFromClipboard has Mode parameter that determines what data will be pasted; possible values defined in the PlotCopyModes enumeration. Certainly, only series and labels (or both) may be pasted; new objects are created and initialized by data from the clipboard.

For DMWorksheet, this method also has a parameters. Text in the clipboard must contain lines of values separated by spaces, commas or tabstops. Data is pasted from topleft selected cell. If InsertLines is true, new lines will be added, else existing lines will be modified according to second parameter. If Overwrite mode specified, cell contents are replaced else data from clipboard will be inserted at selected position.

For all objects, this method does nothing if there's no suitable data on the clipboard. Use CanPaste method to determine whether clipboard has appropriate data formats.

Syntax:
function CanPaste: Boolean

Applies to:
DMApplication, DMDigitizer, DMInternalApplication, DMLabel, DMNotes, DMPlot, DMSerie, DMWorksheet

CanPaste method returns True if clipboard has valid data for PasteFromClipboard method. Use it to monitor controls associated with "Paste" command. Notice: for IDMApplication3 interface, this method has a parameter whose value allows to test whether desirable clipboard format is available.

Syntax:
function Select: VOID

Applies to:
DMLabel, DMNotes, DMPlot, DMSerie, DMWorksheet

For DMNotes object, this method should be used to select text in the editor. SelStart and SelEnd parameters are first and last character positions.

For DMPlot object, Select() changes numeric (double precision) coordinates of the plot selection area. This area may be visualized using SelectionVisible property and affects on some plot editing commands.

For DMWorksheet, this method defines integer coordinates of the worksheet selection. Left and Right ranges are (1..26), Top and Bottom are (0..Container.ItemCount-1).

For DMSerie, Select() has almost the same meaning as for DMWorksheet. Columns are ranged from 1 to 26, lines - from 0 to Container.ItemCount-1. However, XCol and YCol must represent valid data, that is, all items in the selected data range must have appropriate number of columns.

For DMLabel, this method allows you programmatically select label object. Notice that Select() has no effect until IDMPlot2.MouseMode<>pmmLabelEdit.

Syntax:
function Move(XMin, YMin, XMax, YMax): VOID

Applies to:
DMLabel, DMSerie

For DMLabel object, Move changes label coordinates. However, for DMSerie objects, this method changes its position in the list of plot series, so that order of series painting also changes.