Microsoft KB Archive/178127

= How To Adjust RowHeight of MSFlexGrid to Accommodate WordWrap =

Article ID: 178127

Article Last Modified on 6/29/2004

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APPLIES TO


 * Microsoft Visual Basic 5.0 Professional Edition
 * Microsoft Visual Basic 6.0 Professional Edition
 * Microsoft Visual Basic 5.0 Enterprise Edition
 * Microsoft Visual Basic 6.0 Enterprise Edition

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This article was previously published under Q178127



SUMMARY
The MSFlexGrid included with Visual Basic 5.0 has a WordWrap property that allows the user to determine whether text in a cell of the MSFlexGrid should be continued on a new line in the same cell if one or more words extends beyond the edge of the cell. However, the MSFlexGrid does not automatically adjust the RowHeight to accommodate the extra lines. This article illustrates how you can adjust the RowHeight of cells in the MSFlexGrid to accommodate text that wraps.



MORE INFORMATION
This example uses the SendMessage API function with the EM_GETLINECOUNT constant as an argument. When you use the EM_GETLINECOUNT message, SendMessage returns the number of lines an edit control (or TextBox) is currently displaying. This does not work directly on the MSFlexGrid because the MSFlexGrid is not intrinsic to Windows, as is the edit box. However, by using an edit box with the MSFlexGrid, you can use SendMessage to extend the functionality of the MSFlexGrid.

Step-by-Step Example
 Create a new Standard EXE project.Form1 is created by default. Click Components on the Project menu and check "Microsoft FlexGrid Control 5.0." Add a Data control, a TextBox, an MSFlexGrid control and a CommandButton to the default form.  Set the following properties for the controls on the default form:   Name               Property                       Value -  Data1              DatabaseName                   NWIND.MDB Data1             RecordSource                   Employees MSFlexGrid1       AllowUserResizing              3 - flexResizeBoth MSFlexGrid1       DataSource                     Data1 MSFlexGrid1       WordWrap                       True Text1             MultiLine                      True Text1             Visible                        False NOTE: The database NWIND.MDB is installed into your Visual Basic directory.   Add the following code to the code window of the default form: Option Explicit

Private Declare Function SendMessage Lib "user32" Alias _ "SendMessageA" _ (ByVal hwnd As Long, _         ByVal wMsg As Long, _          ByVal wParam As Long, _          lParam As Any) As Long

Const EM_GETLINECOUNT = &HBA

Private Sub Command1_Click Dim ColLoop As Long Dim RowLoop As Long

'Turn off redrawing to avoid flickering MSFlexGrid1.Redraw = False

For ColLoop = 0 To MSFlexGrid1.Cols - 1 MSFlexGrid1.ColWidth(ColLoop) = 2500

For RowLoop = 0 To MSFlexGrid1.Rows - 1 ReSizeCellHeight RowLoop, ColLoop Next RowLoop Next ColLoop

'Turn redrawing back on        MSFlexGrid1.Redraw = True End Sub

Public Sub ReSizeCellHeight(MyRow As Long, MyCol As Long) Dim LinesOfText As Long Dim HeightOfLine As Long

'Set MSFlexGrid to appropriate Cell MSFlexGrid1.Row = MyRow MSFlexGrid1.Col = MyCol

'Set textbox width to match current width of selected cell Text1.Width = MSFlexGrid1.ColWidth(MyCol)

'Set font info of textbox to match FlexGrid control Text1.Font.Name = MSFlexGrid1.Font.Name Text1.Font.Size = MSFlexGrid1.Font.Size Text1.Font.Bold = MSFlexGrid1.Font.Bold Text1.Font.Italic = MSFlexGrid1.Font.Italic Text1.Font.Strikethrough = MSFlexGrid1.Font.Strikethrough Text1.Font.Underline = MSFlexGrid1.Font.Underline

'Set font info of form to match FlexGrid control Me.Font.Name = MSFlexGrid1.Font.Name Me.Font.Size = MSFlexGrid1.Font.Size Me.Font.Bold = MSFlexGrid1.Font.Bold Me.Font.Italic = MSFlexGrid1.Font.Italic Me.Font.Strikethrough = MSFlexGrid1.Font.Strikethrough Me.Font.Underline = MSFlexGrid1.Font.Underline

'Put the text from the selected cell into the textbox Text1.Text = MSFlexGrid1.Text

'Get the height of the text in the textbox HeightOfLine = Me.TextHeight(Text1.Text)

'Call API to determine how many lines of text are in text box LinesOfText = SendMessage(Text1.hWnd, EM_GETLINECOUNT, 0&, 0&)

'Check to see if row is not tall enough If MSFlexGrid1.RowHeight(MyRow) < (LinesOfText*HeightOfLine) Then 'Adjust the RowHeight based on the number of lines in textbox MSFlexGrid1.RowHeight(MyRow) = LinesOfText * HeightOfLine End If     End Sub  Press the F5 key to run the project.</li> Click Command1.

RESULT: Before clicking the button, all cells of the MSFlexGrid are the default size. Clicking the button runs code that processes each cell of the MSFlexGrid and increases the cell's height if necessary to display all of it's text. In this example, this is most apparent in the "Notes" column of the MSFlexGrid control.

NOTE: In order to receive the best results, you may also need to adjust the ColWidth property.</li></ol>

Keywords: kbhowto kbcontrol KB178127

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