Spread Windows Forms 7.0 Product Documentation
Setting a Rich Text Cell
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Spread Windows Forms 7.0 Product Documentation > Developer's Guide > Customizing Interaction with Cell Types > Working with Graphical Cell Types > Setting a Rich Text Cell

Glossary Item Box

You can create a rich text cell that has text with multiple colors and fonts in the cell.

The rich text cell has a run-time menu for formatting the text in a cell and for loading an RTF file (rich text formatted file). The menu also has basic edit operations such as cut, copy, paste, delete, and select all. To bring up the menu at run time the cell must be in Edit mode. Then you right-click in the cell to bring up the menu for handling the contents of that cell. Highlight the text first if you wish to set the color, font, or style of the text in the cell. An example of the use of the menu is shown in this figure.

Rich-text cell menu

Understanding Context Menu Choices

The choices in the context menu are described in this table.

Menu Item

Description

Cut Copy Paste

Standard Clipboard operations that cut, copy, and paste to and from the Clipboard the contents (text and formatting) of the cell

Delete

 Removes the selected contents (text and formatting) of the cell

Select All

 Selects the entire contents (text and formatting) of the cell

Clear All

 Clears the entire contents (text and formatting) of the cell

Load

Opens the File Open dialog to allow you to select an RTF file to load

Color

Opens a color palette to allow you to select a color that is either applied to selected text or is used as the color of subsequent text

Font

Opens a font picker to allow you to select a font face and size that is either applied to selected text or is used as the font of subsequent text

Style

Opens a menu to allow you to select a font style (bold, italics, or underline) that is either applied to selected text or is used as the font of subsequent text

Align

 Opens a menu to allow you to set the text alignment

Using the Rich-Text Cell

When the rich-text cell is first edited or text is loaded, the RTF string of data and formatting information is set in the cell. Subsequent changes to the cell, column, or row appearance settings (such as font, text color, alignment) do not affect the existing text because the formatting information for that text is already set. For the newer settings to be applied to the original string, you must completely clear the cell of both data and formatting.

Setting a property such as alignment may not apply after the cell has been modified in edit mode. Many formatting properties (HorizontalAlignment, Font, ForeColor, etc...) can be set in the hidden RTF code associated with the Value of the cell. For example, setting the HorizontalAlignment property prior to any editing may correctly set the alignment, but setting this property after editing may not have the desired effect. RTF has hidden formatting embedded in the RTF string which may be parsed or viewed through the Value property of the cell.

You can use the Value property in code to load the contents of an RTF file as a string of RTF commands, or you can set any set of RTF commands directly.

The cell width may be off several pixels if you automatically size the rich text cell and you are using multiple fonts.

Deleting the text from a rich-text cell puts a non-null string in the cell. This may cause unexpected results with the ISBLANK and COUNTBLANK formula functions since they treat the non-null string as non-blank.

If the WordWrap property is true when using the GetPreferredRowHeight method, the height may be slightly larger if the last character on a wrapped line is on the border.

Important Notes

The rich-text cell uses the Microsoft .NET RichTextBox class for editing. Text using a font with extended character sets, like MSPMincho, cannot be set to a font that does not support extended character sets, like Tahoma. The result is that RichTextBox does not allow you to change the font of a Far East script-based font to a Western font.

This font issue is a limitation of the RichTextBox for the Microsoft Windows 2000 operating system. If you try to set a font that does not support extended character sets, like Tahoma, on text with extended characters, a message box is displayed.

For more information on the properties and methods of this cell type, refer to the RichTextCellType class.

Using the Properties Window

  1. At design time, in the Properties window, select the Spread component.
  2. Select the Sheets property.
  3. Click the button to display the SheetView Collection Editor.
  4. In the Members list, select the sheet in which the cells appear.
  5. In the property list, select the Cells property and then click the button to display the Cell, Column, and Row Editor.
  6. Select the cells for which you want to set the cell type.
  7. In the property list, select the CellType property and choose the RichText cell type.
  8. Expand the list of properties under the CellType property. Select and set these specific properties as needed.
  9. Click OK to close the Cell, Column, and Row Editor.
  10. Click OK to close the SheetView Collection Editor.

Using Code (to set various properties)

  1. Define a rich text cell by creating an instance of the RichTextCellType class.
  2. Specify the properties of the RichTextCellType class.
  3. Assign the rich text cell type to a cell or range of cells by setting the CellType property for a cell, column, row, or style to the RichTextCellType object.

Example

C# Copy Code 
FarPoint.Win.Spread.CellType.RichTextCellType rtf = new FarPoint.Win.Spread.CellType.RichTextCellType();
rtf.WordWrap = true;
rtf.Multiline = true;
fpSpread1.ActiveSheet.Cells[0, 0].CellType = rtf;
fpSpread1.ActiveSheet.Columns[0].Width = 300;
fpSpread1.ActiveSheet.Rows[0].Height = 150;
fpSpread1.ActiveSheet.Cells[0, 0].Value = @"{\rtf1\ansi\ansicpg1252\deff0\deflang1033
{\fonttbl{\f0\fscript\fprq2\fcharset0 Comic Sans MS;}
{\f1\froman\fprq2\fcharset0 Times New Roman;}
{\f2\fswiss\fcharset0 Arial;}}{\colortbl ;\red128
\green0\blue128;\red0\green255\blue255;\red255\green0\
blue0;\red0\green255\blue0;\red0\green0\blue255;}
\viewkind4\uc1\pard\cf1\b\f0\fs24 Testing\cf2\b0\fs28 \cf3
\f1\fs40 1... \cf4\i 2... \cf5\ul\i0 3...\cf0\f2\fs20\par}";
VB Copy Code 
Dim rtf As New FarPoint.Win.Spread.CellType.RichTextCellType()
rtf.WordWrap = True
rtf.Multiline = True
FpSpread1.ActiveSheet.Cells(0, 0).CellType = rtf
FpSpread1.ActiveSheet.Columns(0).Width = 300
FpSpread1.ActiveSheet.Rows(0).Height = 150
FpSpread1.ActiveSheet.Cells(0, 0).Value = "{\rtf1\ansi\ansicpg1252\deff0\deflang1033" + _
"{\fonttbl{\f0\fscript\fprq2\fcharset0 Comic Sans MS;}" + _
"{\f1\froman\fprq2\fcharset0 Times New Roman;}" + _
"{\f2\fswiss\fcharset0 Arial;}}" + _
"{\colortbl ;\red128\green0\blue128;\red0\green255\blue255;" + _
"\red255\green0\blue0;" + _
"\red0\green255\blue0;\red0\green0\blue255;}" + _
"\viewkind4\uc1\pard\cf1\b\f0\fs24 Testing\cf2\b0\fs28" + _
" \cf3\f1\fs40 1... \cf4\i 2... \cf5\ul\i0 3...\cf0\f2\fs20\par" + _
"}"

Using Code (to load an RTF file)

  1. Define a rich text cell by creating an instance of the RichTextCellType class.
  2. Set the Value property of the RichTextCellType class to load an RTF file.
  3. Assign the rich text cell type to a cell or range of cells by setting the CellType property for a cell, column, row, or style to the RichTextCellType object.

Example

C# Copy Code 
System.IO.TextReader f = System.IO.File.OpenText("your_file.rtf");
string bits;
bits = f.ReadToEnd();
f.Close();
fpSpread1.ActiveSheet.Cells[0, 0].CellType = new FarPoint.Win.Spread.CellType.RichTextCellType();
fpSpread1.ActiveSheet.Cells[0, 0].Value = bits;
VB Copy Code 
Dim f as System.IO.TextReader = System.IO.File.OpenText("your_file.rtf")
Dim bits As String
bits = f.ReadToEnd()
f.Close()
FpSpread1.ActiveSheet.Cells(0, 0).CellType = New FarPoint.Win.Spread.CellType.RichTextCellType()
FpSpread1.ActiveSheet.Cells(0, 0).Value = bits

Using the Spread Designer

  1. Select the cell or cells in the work area.
  2. In the property list, in the Misc category, select CellType. From the drop-down list, choose the RichTextCellType cell type. Now expand the CellType property and various properties are available that are specific to this cell type. Select and set those properties as needed.

    Or right-click on the cell or cells and select Cell Type. From the list, select RichText. In the CellType editor, set the properties you need. Click Apply.

  3. From the File menu choose Apply and Exit to apply your changes to the component and exit Spread Designer.

See Also

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