例子:新建工程,放入一個Frame控件Frame1,再在Frame1 中放入4個復(fù)選框checkbox1、checkbox2、checkbox3、checkbox4
在form_load()子過程中加入一句:ArrangeChildren frame1 運行結(jié)果為4個復(fù)選框等間距整齊地排列在其容器frame1 中。在設(shè)計窗口中,你可以任意調(diào)整它們的上下位置,運行后將按它們設(shè)計時的上下順序整齊排列,并且它們的索引順序按由下到大排列。(索引順序的作用大家知道吧——讓你的程序支持鍵盤操作)。更妙的是,你可在容器中任意增加、減少控件數(shù)量(類型要一樣),運行后它們都能整齊排列,從而一勞永逸。
以下是具體的子過程代碼
Public Sub ArrangeChildren(Father As Control) ´Father為容器控件
´功能:(1)對容器控件內(nèi)的子控件的TabIndex值進行排序
´排序依據(jù)是:由上到下(.Top值由小到大),TabIndex小到大
´(2)對容器控件內(nèi)的子控件等間距整齊排列
Dim Child As Control ´窗體中的任一控件
Dim Children() As Control ´屬于容器中的控件數(shù)組
Dim Tags() As Integer ´元素的值記錄了控件的TabIndex值
Dim TempChild As Control ´臨時控件
Dim i As Integer, j As Integer
Dim x As Integer, Y As Integer
Dim wChild As Integer, hChild As Integer
Dim num As Integer
Dim strTemp As String
Const ADJUST as integer=150 ’微調(diào)(可適當(dāng)增減)
num = 0
For Each Child In Father.Parent.Controls ‘搜索容器所在窗體中的每一個控件
If TypeOf Child Is CheckBox Then ‘這個判斷是為了提高效率,可不要
If Child.Container Is Father Then
ReDim Preserve Children(num)
ReDim Preserve Tags(num)
Set Children(num) = Child
Children(num).Tag = num
Tags(num) = Children(num).TabIndex
num = num + 1
End If
End If
Next
If num < 1 Then Exit Sub ‘當(dāng)容器中一個子控件也沒有時,退出
num = UBound(Children)
SortProc Tags ‘將數(shù)組Tags()按由小到大順序排序
ArrayTagProc Children ‘越在屏幕上面的控件,其<.top>值越小,故讓其<.tag>值也小
For i = 0 To num
Children(i).TabIndex = Tags(Children(i).Tag)
Next i ‘越在屏幕上面的控件,其索引值?。▽崿F(xiàn)索引值的排序)
ArrayTabIndexProc Children ´
x = 200 ‘控件在其容器中的起始位置
wChild = 4000 ‘控件寬度
hChild = 255 ‘控件高度
Y = (Father.Height - ADJUST - (num + 1) * hChild) / (num + 2)
For j = 0 To num
Children(j).Move x, (j + 1) * Y + j * hChild + ADJUST, wChild, hChild
Next j
End Sub
Public Sub SortProc(ArrInt() As Integer) ´對整數(shù)數(shù)組進行排序
Dim i As Integer, j As Integer
Dim temp As Integer
Dim num As Integer ´數(shù)組大小
num = UBound(ArrInt)
For i = 0 To num
For j = i + 1 To UBound(ArrInt)
If ArrInt(i) > ArrInt(j) Then
temp = ArrInt(i)
ArrInt(i) = ArrInt(j)
ArrInt(j) = temp
End If
Next j
Next i
End Sub
Public Sub ArrayTabIndexProc(ArrControl() As Control) ´對控件數(shù)組進行排序
´控件數(shù)組 ArrControl(0),ArrControl(1),ArrControl(2),.....ArrControl(n)
´的TabIndex值按由低到高順序排列
Dim i As Integer, j As Integer
Dim temp As Control
Dim num As Integer
num = UBound(ArrControl)
For i = 0 To num
For j = i + 1 To UBound(ArrControl)
If ArrControl(i).TabIndex > ArrControl(j).TabIndex Then
Set temp = ArrControl(i)
Set ArrControl(i) = ArrControl(j)
Set ArrControl(j) = temp
End If
Next j
Next i
End Sub
Public Sub ArrayTagProc(arr() As Control) ´對控件的<.tag>屬性進行排序
´越在屏幕上面的控件,其<.top>值越小,故讓其<.tag>值也小(最綜的目的是讓其索引值?。?br> Dim i As Integer, j As Integer
Dim temp As Variant
Dim num As Integer
Dim arrTop() As Integer ´存儲控件<.Top屬性>數(shù)組
num = UBound(arr)
ReDim arrTop(num)
For i = 0 To num
arrTop(i) = arr(i).Top
Next
SortProc arrTop ´按照由小到大順序
For i = 0 To num
For j = 0 To num
If arr(i).Top = arrTop(j) Then arr(i).Tag = j
Next j
Next i
End Sub
以上程序在Vb5.0、Vb6.0中調(diào)試通過。讀者可以用到自己的程序中,今后再也不用為調(diào)整位置和索引順序而作一些簡單重復(fù)勞動了。