VB控件随窗体大小改变而改变

本人发现VB2008前版本使控件位置和大小自动适应窗体变化的提问很多。但回答的正确的不多。本人用vb6.0也遇到此问题。认真研究的一下。给出最正确的三种模式给大家借鉴。有更好方法可以在交流。代码是无需更改的。

第一种。就是最实用的，就是所有控件的width和height按比例随窗体变化，位置也是当然是按比例哦。控件的字体不变。如下复制到代码：

'改比例，字体不该。最实用


Option Explicit
Private FormOldWidth As Long '保存窗体的原始宽度
Private FormOldHeight As Long '保存窗体的原始高度
Private Sub Form_Load()
Call ResizeInit(Me) '在程序装入时必须加入
End Sub

Private Sub Form_Resize()


Call ResizeForm(Me) '确保窗体改变时控件随之改变
End Sub



'在调用ResizeForm前先调用本函数
Public Sub ResizeInit(FormName As Form)
Dim Obj As Control
FormOldWidth = FormName.ScaleWidth
FormOldHeight = FormName.ScaleHeight
On Error Resume Next
For Each Obj In FormName
Obj.Tag = Obj.Left & " " & Obj.Top & " " & Obj.Width & " " & Obj.Height & " "
Next Obj
On Error GoTo 0
End Sub

'按比例改变表单内各元件的大小，在调用ReSizeForm前先调用ReSizeInit函数
Public Sub ResizeForm(FormName As Form)
Dim Pos(4) As Double
Dim i As Long, TempPos As Long, StartPos As Long
Dim Obj As Control
Dim ScaleX As Double, ScaleY As Double
ScaleX = FormName.ScaleWidth / FormOldWidth '保存窗体宽度缩放比例
ScaleY = FormName.ScaleHeight / FormOldHeight '保存窗体高度缩放比例
On Error Resume Next
For Each Obj In FormName
StartPos = 1
For i = 0 To 4
'读取控件的原始位置与大小
TempPos = InStr(StartPos, Obj.Tag, " ", vbTextCompare)
If TempPos > 0 Then
Pos(i) = Mid(Obj.Tag, StartPos, TempPos - StartPos)
StartPos = TempPos + 1
Else
Pos(i) = 0
End If
'根据控件的原始位置及窗体改变大小的比例对控件重新定位与改变大小
Obj.Move Pos(0) * ScaleX, Pos(1) * ScaleY, Pos(2) * ScaleX, Pos(3) * ScaleY
Next i
Next Obj
On Error GoTo 0
End Sub


第二种，只位置就是控件的left和top随着变。其他都不变。如果变化大了不好看。如下复制：

Option Explicit
Private ObjOldWidth As Long '保存窗体的原始宽度
Private ObjOldHeight As Long '保存窗体的原始高度
Private ObjOldFont As Single '保存窗体的原始字体比

Private Sub Form_Resize()
'确保窗体改变时控件随之改变
Call ResizeForm(Me)
End Sub
Private

Sub Form_Load()
'在程序装入时必须加入
Call ResizeInit(Me)
End Sub



' '在调用ResizeForm前先调用本函数
Public Sub ResizeInit(FormName As Form)
Dim Obj As Control

ObjOldWidth = FormName.ScaleWidth
ObjOldHeight = FormName.ScaleHeight
ObjOldFont = FormName.Font.Size / ObjOldHeight
On Error Resume Next
For Each Obj In FormName
Obj.Tag = Obj.Left & " " & Obj.Top & " " & Obj.Width & " " & Obj.Height & " "
Next Obj

On Error GoTo 0
End Sub
'按比例改变表单内各元件的大小，
'在调用ReSizeForm前先调用ReSizeInit函数
Public Sub ResizeForm(FormName As Form)
Dim Pos(4) As Double
Dim i As Long, TempPos As Long, StartPos As Long
Dim Obj As Control
Dim ScaleX As Double, ScaleY As Double

ScaleX = FormName.ScaleWidth / ObjOldWidth
'保存窗体宽度缩放比例
ScaleY = FormName.ScaleHeight / ObjOldHeight
'保存窗体高度缩放比例
On Error Resume Next

For Each Obj In FormName
StartPos = 1
For i = 0 To 4
'读取控件的原始位置与大小
TempPos = InStr(StartPos, Obj.Tag, " ", vbTextCompare)
If TempPos > 0 Then
Pos(i) = Mid(Obj.Tag, StartPos, TempPos - StartPos)
StartPos = TempPos + 1
Else
Pos(i) = 0
End If

'根据控件的原始位置及窗体改变大
'小的比例对控件重新定位与改变大小
Obj.Move Pos(0) * ScaleX, Pos(1) * ScaleY

Next i

Next Obj

End Sub

第三种，就是所有的都按比例。包括大小。字体，位置，就像放大镜的感觉。复制如下：

Option Explicit
Private ObjOldWidth As Long '保存窗体的原始宽度
Private ObjOldHeight As Long '保存窗体的原始高度
Private ObjOldFont As Single '保存窗体的原始字体比
'窗体部分
Private Sub Form_Resize()
'确保窗体改变时控件随之改变
Call ResizeForm(Me)
End Sub
Private Sub Form_Load()
'在程序装入时必须加入
Call ResizeInit(Me)
End Sub



' '在调用ResizeForm前先调用本函数
Public Sub ResizeInit(FormName As Form)
Dim Obj As Control

ObjOldWidth = FormName.ScaleWidth
ObjOldHeight = FormName.ScaleHeight
ObjOldFont = FormName.Font.Size / ObjOldHeight
On Error Resume Next
For Each Obj In FormName
Obj.Tag = Obj.Left & " " & Obj.Top & " " & Obj.Width & " " & Obj.Height & " "
Next Obj

On Error GoTo 0
End Sub
'按比例改变表单内各元件的大小，
'在调用ReSizeForm前先调用ReSizeInit函数
Public Sub ResizeForm(FormName As Form)
Dim Pos(4) As Double
Dim i As Long, TempPos As Long, StartPos As Long
Dim Obj As Control
Dim ScaleX As Double, ScaleY As Double

ScaleX = FormName.ScaleWidth / ObjOldWidth
'保存窗体宽度缩

放比例
ScaleY = FormName.ScaleHeight / ObjOldHeight
'保存窗体高度缩放比例
On Error Resume Next

For Each Obj In FormName
StartPos = 1
For i = 0 To 4
'读取控件的原始位置与大小
TempPos = InStr(StartPos, Obj.Tag, " ", vbTextCompare)
If TempPos > 0 Then
Pos(i) = Mid(Obj.Tag, StartPos, TempPos - StartPos)
StartPos = TempPos + 1
Else
Pos(i) = 0
End If

'根据控件的原始位置及窗体改变大
'小的比例对控件重新定位与改变大小
Obj.Move Pos(0) * ScaleX, Pos(1) * ScaleY, Pos(2) * ScaleX, Pos(3) * ScaleY
Obj.Font.Size = ObjOldFont * FormName.ScaleHeight
Next i

Next Obj

End Sub