MsFlexGrid使用总结

最近看到我们群里和论坛里关于MsFlexGrid的讨论很多,搜集了一点这方面的资料供大家参考.大家可以继续添加

VB中MsFlexGrid控件的使用细则(收集)

>> 将文本赋值给MsFlexGrid的单元格
MsFlexGrid.TextMatrix(3,1)="Hello"

>> 在MsFlexGrid控件单元格中插入背景图形
Set MsFlexGrid.CellPicture=LoadPicture("C:\temp\1.bmp")

>>选中某个单元
MsFlexGrid.Row=1
MsFlexGrid.Col=1

>>用粗体格式化当前选中单元
MsFlexGrid.CellFontBold=True

>> 添加新的一行
使用AddItem方法,用Tab字符分开不同单元格的内容
dim row as string
row="AAA"&vbtab&"bbb"
MsFlexFrid1.addItem row

>>怎样来实现MSFlexGrid控件单数行背景为白色，双数的行背景为蓝色?
Dim i As Integer
With MSFlexGrid1
.AllowBigSelection = True ' 设置网格样式
.FillStyle = flexFillRepeat
For i = 0 To .Rows - 1
.Row = i: .Col = .FixedCols
.ColSel = .Cols() - .FixedCols - 1
If i Mod 2 = 0 Then
.CellBackColor = &HC0C0C0 ' 浅灰
Else
.CellBackColor = vbBlue ' 兰色
End If
Next i
End With

>> MSFlexGrid控件如何移到最后一行
MSFlexGrid1.TopRow = MSFlexGrid1.Rows � 1

>>如何判断msflexgrid有无滚动条
Declare Function GetScrollRange Lib "user32" (ByVal hWnd As Long, ByVal nBar As Long, lpMinPos As

Long, lpMaxPos As Long) As Long
Public Const SB_HORZ = &H0
Public Const SB_VERT = &H1

Public Function VsScroll(MshGrid As MSHFlexGrid) As Boolean '判断水平滚动条的可见性
Dim i As Long
VsScroll = False
i = GetScrollRange(MshGrid.hWnd, SB_HORZ, lpMinPos, lpMaxPos)
If lpMaxPos <> lpMinPos Then VsScroll = True
End Function

Public Function HeScroll(MshGrid As MSHFlexGrid) As Boolean '判断垂直滚动条的可见性
Dim i As Long
HeScroll = False
i = GetScrollRange(MshGrid.hWnd, SB_VERT, lpMinPos, lpMaxPos)
If lpMaxPos <> lpMinPos Then HeScroll = True
End Function

>>程序运行时，想动态增加MSFlexgrid的列数
在第2列后插入一列：
Private Sub Form_Load()
Me.MSHFlexGrid1.Cols = 5
MSHFlexGrid1.Rows = 2
For i = 0 To Me.MSHFlexGrid1.Cols - 1
Me.MSHFlexGrid1.TextMatrix(0, i) = i
Me.MSHFlexGrid1.TextMatrix(1, i) = i
Next
End Sub

Private Sub Command1_Click()
Me.MSHFlexGrid1.Cols = Me.MSHFlexGrid1.Cols + 1
Me.MSHFlexGrid1.ColPosition(5) = 3
End Sub

>> 请教MSFlexGrid中的对齐功能的使用
设置MSFlexGrid1.ColAlignment(index)=n


>>得到MSFlexGrid控件中当前选中的一行
msflexgrid1.rowsel就是当前选中行

>> 如何通过代码调节列宽度
msflexgrid1.colwidth(i)=4000
将MsFlexGrid控件的内容输出到文本

'OutDataToText
'将MsFlexGrid控件中显示的内容输出到文本文件
Public Sub OutDataToText(Flex As MSFlexGrid)
Dim s As String
Dim i As Integer
Dim j As Integer
Dim k As Integer
Dim strTemp As String
On Error GoTo Ert
Me.MousePointer = 11
On Error Resume Next
DoEvents
Dim FileNum As Integer
FileNum = FreeFile
Open "d:aa.txt" For Output As #FileNum
With Flex
k = .Rows
For i = 0 To k - 1
strTemp = ""
For j = 0 To .Cols - 1
DoEvents
strTemp = strTemp & .TextMatrix(i, j) & ","
Next j
Print #FileNum, Left(strTemp, Len(strTemp) - 1)
Next i
End With
Close #FileNum
Me.MousePointer = 0
MsgBox "导出成功"
Ert:
MsgBox Err.Description
Me.MousePointer = 0
End Sub

增加 MsFlexGrid 的编辑功能
概述
MsFlexGrid 控件没有提供文本编辑的功能，下面的例子演示了如何利用一个TextBox 实现编辑当前网格的功能.在按下一个键后， 就把TextBox 移动到当前的位置， 并激活。 在键入回车或移动到其他网格时，就把TextBox 中的内容放到网格中。

实现步骤
1 打开 VB5， 开启一个新的工程。
2 在菜单"工程" 中选择 "部件"， 在列表中选中 "Microsoft FlexGrid Control .."
3 放一个 MsFlexGrid 控件和一个TextBox 控件(Text1)到 Form1。 修改MsFlexGrid 控件的名称为 Grid1， 设置Grid1 的行，列 为 4， 固定行，列为 0。 设置 Text1 的 Visiable 为 False， BorderStyle 为 None(0)。
4 在Form1 的代码中增加声明：

Const ASC_ENTER = 13 '回车
Dim gRow As Integer
Dim gCol As Integer

5 增加代码到 Grid_KeyPress 过程：

Private Sub Grid1_KeyPress(KeyAscii As Integer)
' Move the text box to the current grid cell:
Text1.Top = Grid1.CellTop + Grid1.Top
Text1.Left = Grid1.CellLeft + Grid1.Left
' Save the position of the grids Row and Col for later:
gRow = Grid1.Row
gCol = Grid1.Col
' Make text box same size as current grid cell:
Text1.Width = Grid1.CellWidth - 2 * Screen.TwipsPerPixelX
Text1.Height = Grid1.CellHeight - 2 * Screen.TwipsPerPixelY
' Transfer the grid cell text:
Text1.Text = Grid1.Text
' Show the text box:
Text1.Visible = True
Text1.ZOrder 0 ' 把 Text1 放到最前面！
Text1.SetFocus
' Redirect this KeyPress event to the text box:
If KeyAscii <> ASC_ENTER Then
SendKeys Chr$(KeyAscii)
End If
End Sub

6 增加代码到 Text1_KeyPress 过程：

Private Sub Text1_KeyPress(KeyAscii As Integer)
If KeyAscii = ASC_ENTER Then
Grid1.SetFocus ' Set focus back to grid, see Text_LostFocus.
KeyAscii = 0 ' Ignore this KeyPress.
End If
End Sub

7 增加代码到 Text1_LostFocus 过程：

Private Sub Text1_LostFocus()
Dim tmpRow As Integer
Dim tmpCol As Integer
' Save current settings of Grid Row and col. This is needed only if
' the focus is set somewhere else in the Grid.
tmpRow = Grid1.Row
tmpCol = Grid1.Col
' Set Row and Col back to what they were before Text1_LostFocus:
Grid1.Row = gRow
Grid1.Col = gCol
Grid1.Text = Text1.Text ' Transfer text back to grid.
Text1.SelStart = 0 ' Return caret to beginning.
Text1.Visible = False ' Disable text box.
' Return row and Col contents:
Grid1.Row = tmpRow
Grid1.Col = tmpCol
End Sub

8 好了。 按 F5 开始测试。 您可以自由地在 Grid 中移动， 按回车可以开始或结束编辑。

使用MsFlexGrid控件的几个函数

在VB处理数据显示的时候,使用表格是一种好的方法,虽然DataGrid可以与数据源绑定,但是总有美中不足,就是外观不好看,所以有时应用MsFlexGrid显示数据还是一种比较好的方法,以下几个函数是用来控制MsFlexGrid的程序

(本人语言表达能力有限,还请见谅)

''MsFlexGrid操作函数

''合并列
Public Function MergeCol(GridObj As Object, ByVal StartCol As Long, ByVal EndCol As Long, ByVal ColValue As String, ByVal CurrentRow As Long) As Boolean
If StartCol > EndCol Or StartCol > GridObj.Cols Or CurrentRow > GridObj.Rows Then
MsgBox "对不起，行列设置错误！", vbOKOnly, App.Title
MergeCol = False
Exit Function
End If

For I = StartCol To EndCol
GridObj.MergeCol(I) = True
GridObj.TextArray(faIndex(GridObj, CurrentRow, I)) = ColValue
GridObj.ColAlignment(I) = flexAlignCenterCenter
Next I


GridObj.MergeRow(CurrentRow) = True

MergeCol = True

End Function

''合并行
Public Function MergeRow(GridObj As Object, ByVal StartRow As Long, ByVal EndRow As Long, ByVal RowValue As String, ByVal CurrentCol As Long) As Boolean
If StartRow > EndRow Or StartRow > GridObj.Rows Or CurrentCol > GridObj.Cols Then
MsgBox "对不起，行列设置错误！", vbOKOnly, App.Title
MergeRow = False
Exit Function
End If

For I = StartRow To EndRow
GridObj.MergeRow(I) = True
GridObj.TextArray(faIndex(GridObj, I, CurrentCol)) = RowValue
GridObj.ColAlignment(CurrentCol) = flexAlignCenterCenter

Next I
GridObj.MergeCol(CurrentCol) = True
MergeRow = True

End Function

''转换索引
Public Function faIndex(GridObj As Object, ByVal row As Integer, ByVal col As Integer) As Long
If row > GridObj.Rows Or row < 0 Or col > GridObj.Cols Or col < 0 Then
MsgBox "对不起，行列设置错误！", vbOKOnly, App.Title
faIndex = -1

Exit Function
End If

faIndex = row * GridObj.Cols + col

End Function


''插入行
Public Function SetItem(GridObj As Object, ByVal row As Integer, ByVal col As Integer, ByVal

SetValue As String) As Boolean
If row > GridObj.Rows Or row < 0 Or col > GridObj.Cols Or col < 0 Then
MsgBox "对不起，行列设置错误！", vbOKOnly, App.Title
SetItem = False
Exit Function
End If
GridObj.TextArray(faIndex(GridObj, row, col)) = SetValue

SetItem = True
End Function

''得到单元格值
Public Function GetItem(GridObj As Object, ByVal row As Integer, ByVal col As Integer) As String

If row > GridObj.Rows Or row < 0 Or col > GridObj.Cols Or col < 0 Then
MsgBox "对不起，行列设置错误！", vbOKOnly, App.Title
GetItem = ""
Exit Function
End If
GetItem = GridObj.TextArray(faIndex(GridObj, row, col))
End Function

在msflexgrid控件中每一个cell格的内容是不可以由用户直接编辑的但是我们可以通过一些小技巧来方便的实现这编辑功能来扩展msflexgrid的应用（在实际应用中这是很常用的功能）。
你只需按下面的做即可轻松实现编辑msflexgrid控件数据的功能
例在窗体上放一文本框txtvalue，和一msflexgrid控件grid

'文本框控件的keypress事件
private sub txtvalue_keypress(keyascii as integer)
'放入一些处理过程，如只需输入数字时的处理

dim i
i=1
end sub

private sub txtvalue_change()
grid.text = txtvalue.text
end sub


'在grid的entercell事件中加入下例代码
private sub grid_entercell()
txtvalue.text = grid.text
txtvalue.selstart = 0
txtvalue.sellength = len(txtvalue.text)
end sub

'当用户输入数据时直接调用文本框的keypress事件
private sub grid_keypress(keyascii as integer)
txtvalue_keypress keyascii
end sub

ok,这样一个可编辑的msflexgrid控件就完成了，简单吧!!

原理
当用户点击msflexgrid中的某个cell格要输入数据时,产生entercell事件，在这里我们对文本
框进行初始化，输入当前cell格中的内容，并且选中所有文本。当用户要按下按键进行输入时，就直
接调用txtvalue的事件，由文本框来处理.

处理的结果同grid的当前cell同步，使用户编辑cell格就象使用文本框一样方便。

 

如何实现网格单元格中文字的多行显示?

网格单元格中文字的多行显示很简单，只要把WordWarp属性改为True就可以了。