【小程序】VB趣味小程序
时间：2020-09-03 08:38:21 来源：天一资源网 本文已影响 人 
VB 趣味小程序
1. 空心三角形
Dim i%, j%
Print Space(20); "*"
For i = 2 To 9
Print Space(21 - i); "*"; Space(2 * i - 3); "*"
Next
Print Space(10);
For i = 1 To 10
Print Space(1); "*";
Next
扩展程序
Const n = 15
Dim a(1 To n) As Integer
Dim i%, j%, t%
Randomize
For i = 1 To n
a(i) = Int(100 * Rnd)
'生成 15 个 0～100 的随机整数存入
数组
Next
Print "排序前："
For i = 1 To n
Print a(i);
Next
For i = 1 To n - 1
For j = i + 1 To n
If a(j) < a(i) Then t = a(j): a(j) = a(i): a(i) = t
Next
Next
Print "排序后："
For i = 1 To n
Print a(i);
Next
2. 六角星
Dim i%, j%, k%
For i = 1 To 10
If i < 4 Or i > 6 Then
Print Space(20 - i);
For j = 1 To i
Print "○";
Next j
Else
Print Space(6 + i);
For k = 14 - i To 1 Step -1
Print "○";
Next k
End If
Next i
For i = 3 To 1 Step -1
Print Space(20 - i);
For j = 1 To i
Print "○";
Next j
Next i
3. 球来回弹
在窗体上添加一 shape 空间，shape 为 circle，计时器空间 inteval=10
通用
Dim bz
Private Sub Timer1_Timer()
If Shape1.Left >= Form1.ScaleWidth - Shape1.Width Then bz = 1
If Shape1.Left <= 0 Then bz = 0
If bz = 0 Then Shape1.Left = Shape1.Left + 10
If bz = 1 Then Shape1.Left = Shape1.Left - 10
End Sub
注意：bz 的使用（bz 为一临时标志，用于判断移动方向）
4. 从大到小再从小到大变化
在窗体添加一标签 label1，autosize=true，caption="★",添加一计时器
空间 timer1，inteval=100
通用：
Dim bz
Private Sub Timer1_Timer()
If Label1.FontSize >= 72 Then bz = 1
If Label1.FontSize <= 8 Then bz = 0
If bz = 0 Then Label1.FontSize = Label1.FontSize + 2
If bz = 1 Then Label1.FontSize = Label1.FontSize - 2
End Sub
5. 在 VB 中用画圆
Dim x, y, i As Single
Cls
Scale (-15, 15)-(15, -15)
'定义笛卡儿坐标系
For i = 0 To 6.28 Step 0.05
y = 10 * Sin(i)
x = 10 * Cos(i)
CurrentX = x
CurrentY = y
Print "*"
Next
6. 四周循环移动
创建一个窗体，在上面添加“开始”和“停止”两个按钮，添加一个
计时器控件 timer1
在窗体上添加一个 shape 控件，设置背景不透明，红色，调整大小
程序代码如下：
Option Explicit
Dim bz%
Private Sub Command1_Click() '开始按钮
Timer1 = True
End Sub
Private Sub Command2_Click() '停止按钮
Timer1 = False
End Sub
Private Sub Form_Load()
Shape1.Left = 0
Shape1.Top = 0
Timer1 = False
Timer1.Interval = 10
End Sub
Private Sub Timer1_Timer()
If Shape1.Left >= Form1.ScaleWidth - Shape1.Width And
Shape1.Top <= 0 Then bz = 1
If Shape1.Top >= Form1.ScaleHeight - Shape1.Height Then
bz = 2
If Shape1.Left <= 0 Then bz = 3
If Shape1.Top <= 0 And Shape1.Left <= 0 Then bz = 0
Select Case bz
Case 0
Shape1.Left = Shape1.Left + 10
Case 1
Shape1.Top = Shape1.Top + 10
Case 2
Shape1.Left = Shape1.Left - 10
Case 3
Shape1.Top = Shape1.Top - 10
End Select
End Sub
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