XTextStyle CharSpacing Property. The inter-character spacing. ABCpdf .NET PDF Library.

This property controls the spacing between each character. It is sometimes called tracking but should not be confused with kerning which is slightly different.

Each character in a string of text has a width which is used for positioning the next character. The CharSpacing is added to the width of each character.

In the horizontal writing mode, specifying a positive value has the effect of stretching out the text. Specifying negative values has the effect of condensing the text. In the vertical writing mode, positive values condense the text, and negative values stretch out the text. See the FontObject.WritingMode property. 

Because this property is measured as an absolute value the visual effect will be greater if your text is smaller.

In this example we add three blocks of text to a document. The first block uses the default spacing. The second block uses a positive value to stretch out the text. The last block uses a negative value to condense the text.

[C#]
Doc theDoc = new Doc();
theDoc.TextStyle.Size = 96;
theDoc.AddText("Zero CharSpacing");
theDoc.Rect.Move(0, -300);
theDoc.TextStyle.CharSpacing = 10;
theDoc.AddText("Positive CharSpacing");
theDoc.Rect.Move(0, -300);
theDoc.TextStyle.CharSpacing = -10;
theDoc.AddText("Negative CharSpacing");
theDoc.Save(Server.MapPath("stylecspace.pdf"));
theDoc.Clear();

[Visual Basic]
Dim theDoc As Doc = New Doc()
theDoc.TextStyle.Size = 96
theDoc.AddText("Zero CharSpacing")
theDoc.Rect.Move(0, -300)
theDoc.TextStyle.CharSpacing = 10
theDoc.AddText("Positive CharSpacing")
theDoc.Rect.Move(0, -300)
theDoc.TextStyle.CharSpacing = -10
theDoc.AddText("Negative CharSpacing")
theDoc.Save(Server.MapPath("stylecspace.pdf"))
theDoc.Clear()



stylecspace.pdf