vb移动窗体的代码
Option Explicit
Private Declare Function ReleaseCapture Lib "user32" () As Long
Private Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Long) As Long
Const HTCAPTION = 2
Const WM_NCLBUTTONDOWN = &HA1
Private Sub Form_MouseDown(Button As Integer, Shift As Integer, x As Single, Y As Single)
If Button = 1 Then ' Checking for Left Button only
Dim ReturnVal As Long
x = ReleaseCapture()
ReturnVal = SendMessage(hwnd, WM_NCLBUTTONDOWN, HTCAPTION, 0)
End If
End Sub
Private Sub Form_MouseDown(Button As Integer, Shift As Integer, X As Single, Y As Single)
If Button And vbLeftButton Then
mX = X: mY = Y
End If
End Sub
Private Sub Form_MouseMove(Button As Integer, Shift As Integer, X As Single, Y As Single)
If Button And vbLeftButton Then
Me.Move Me.Left - mX + X, Me.Top - mY + Y
End If
End Sub
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http://www.planet-source-code.co ......
3,Return without GoSub
5,Invalid procedure call
6,Overflow
7,Out of memory
9,Subscript out of range
10,This array is fixed or temporarily locked
11,Division by zero
13,Type mismatch
14,Out of string space
16,Expression too complex
17,Cant perform requested operation
18,User int ......
该方法不需要使用API及第三方控件
这里使用的是VB的UserControl控件的AsyncRead方法
步骤如下:
1、添加一个用户控件，设置InvisibleAtRuntime属性为true，目的是运行时该控件不显示用户界面，就象Timer控件一样。
2、到自定义控件的代码窗口，添加如下代码
Option Explicit
'下载结果枚举
Public Enum Downloa ......
如何让幻灯片在vb的框架里播放
'Microsoft PowerPoint 9.0(Office 2000的，如果是97则是8.0) Object Library)
''Microsoft PowerPoint 11.0(Office 2003) Object Library)
Private Declare Sub Sleep Lib "kernel32" (ByVal dwMilliseconds As Long) '延时API声明
Private Sub Form_Load()
Dim ppt As New PowerPoint. ......
