RichEditControl.MeasureSingleLineString(String, CharacterPropertiesBase) Method

Calculates the length of a formatted string.

Namespace: DevExpress.XtraRichEdit

Assembly: DevExpress.XtraRichEdit.v24.2.dll

Declaration

C#

public SizeF MeasureSingleLineString(
    string text,
    CharacterPropertiesBase properties
)

VB.NET

Public Function MeasureSingleLineString(
    text As String,
    properties As CharacterPropertiesBase
) As SizeF

Parameters

Name	Type	Description
text	String	A string to measure.
properties	CharacterPropertiesBase	A CharacterPropertiesBase interface specifying formatting used to display a string.

Returns

Type	Description
SizeF	A SizeF object that is the rectangle required to display a string.

Remarks

The following code snippet illustrates the use of a MeasureSingleLineString method, to calculate required size of a tab stop. Tab stop position is specified by the TabInfo.Position property and measured in units of a current document (Document.Unit value). To provide a uniform tab stops for a certain number of characters, we specify a monospaced font as the default document font and measure the length of a string containing required number of characters.

Form1.cs

using DevExpress.XtraRichEdit.API.Native;
using DevExpress.XtraRichEdit.Utils;
using DevExpress.Office.Utils;
            Document document = richEditControl1.Document;
            SizeF tabSize = richEditControl1.MeasureSingleLineString(new String(' ', 4), document.DefaultCharacterProperties);
            TabInfoCollection tabs = document.Paragraphs[0].BeginUpdateTabs(true);
            try {
                for (int i = 1; i <= 30; i++) {
                    DevExpress.XtraRichEdit.API.Native.TabInfo tab = new DevExpress.XtraRichEdit.API.Native.TabInfo();
                    tab.Position = i * tabSize.Width;
                    tabs.Add(tab);
                }
            }
            finally {
                document.Paragraphs[0].EndUpdateTabs(tabs);
            }

Form1.vb

Imports DevExpress.XtraRichEdit.API.Native
Imports DevExpress.XtraRichEdit.Utils
Imports DevExpress.Office.Utils
            Dim document As Document = richEditControl1.Document
            Dim tabSize As SizeF = richEditControl1.MeasureSingleLineString(New String(" "c, 4), document.DefaultCharacterProperties)
            Dim tabs As TabInfoCollection = document.Paragraphs(0).BeginUpdateTabs(True)
            Try
                For i As Integer = 1 To 30
                    Dim tab As New DevExpress.XtraRichEdit.API.Native.TabInfo()
                    tab.Position = i * tabSize.Width
                    tabs.Add(tab)
                Next i
            Finally
                document.Paragraphs(0).EndUpdateTabs(tabs)
            End Try