如何用API32 在 VB6中创建多线程!难道vb不能创建多线程吗?

[wangxd123]

请教各位大虾:
vb是不是不能创建多线程?
如果可以,怎样创建?望给出事例,谢谢了

[jing]

vb Can Create MultiThread Application.
You can use api. or Other...
I have a Project.Need You use?

[jing]

VB dll Project can create MultiThread.
you can Create new one Object to create a Thread.

[mxp]

jing:我也想要一份可以吗，谢谢！[e-mail]

[wangxd123]

jing:
发email:[e-mail] 给我，谢谢
那个工程

[Chen_Lin]

http://www.csdn.net/visual%20basic/index.htm
vbthread.zip 在VB应用程序中使用多线程的例子 14K

[wangxd123]

http://www.csdn.net/visual%20basic/index.htm
vbthread.zip 在VB应用程序中使用多线程的例子 14K
这个例子是作了一个.dll但是我总不能用别人开发出来的东西吧,再说这个例子我看了
运行时会出现开发的信息,必须注册和著者联系,否则的话,那条信息总是显示出来,烦的很


目前我已能用 createthread()函数创建一个线程,但当我增加一个线程时,程序能够运行.
但退出时,程序出错,连vb也退了出来,我检查过了,我按退出按钮时,两个线程均已exit func , 我不明白这是怎么回事,难道是因为,标准exe工程只允许单线程的缘故?

原作者

[Chen_Lin]

在csdn上的例程确实太老了，而且实用性不大。
下面给出完全用vb实现的多线程程序。
----------以下在Main.bas中定义------------------
'这里的例子函数是开线程后的函数入口
'这里您可以定义自己的程序
Private Declare Function GetTickCount Lib "kernel32" () As Long
Public Sub FlickerTop()

Static BgColor As Long
Dim lTick As Long, lCounter As Long

On Error Resume Next
For lCounter = 0 To 5999
If BgColor <> &HFF& Then BgColor = &HFF& Else BgColor = &HFF00&
Form1.Picture1.BackColor = BgColor
lTick = GetTickCount
While GetTickCount - lTick < 1250
Wend
Next

End Sub
-------------------在cls中的定义------------------------
Private Type udtThread
Handle As Long
Enabled As Boolean
End Type

Private uThread As udtThread

Private Const CREATE_SUSPENDED As Long = &H4
Private Const THREAD_BASE_PRIORITY_IDLE As Long = -15
Private Const THREAD_BASE_PRIORITY_LOWRT As Long = 15
Private Const THREAD_BASE_PRIORITY_MAX As Long = 2
Private Const THREAD_BASE_PRIORITY_MIN As Long = -2
Private Const THREAD_PRIORITY_HIGHEST As Long = THREAD_BASE_PRIORITY_MAX
Private Const THREAD_PRIORITY_LOWEST As Long = THREAD_BASE_PRIORITY_MIN
Private Const THREAD_PRIORITY_ABOVE_NORMAL As Long = (THREAD_PRIORITY_HIGHEST - 1)
Private Const THREAD_PRIORITY_BELOW_NORMAL As Long = (THREAD_PRIORITY_LOWEST + 1)
Private Const THREAD_PRIORITY_IDLE As Long = THREAD_BASE_PRIORITY_IDLE
Private Const THREAD_PRIORITY_NORMAL As Long = 0
Private Const THREAD_PRIORITY_TIME_CRITICAL As Long = THREAD_BASE_PRIORITY_LOWRT

Private Declare Function CreateThread Lib "kernel32" (ByVal lpThreadAttributes As Any, ByVal dwStackSize As Long, ByVal lpStartAddress As Long, lpParameter As Any, ByVal dwCreationFlags As Long, lpThreadId As Long) As Long
Private Declare Function ResumeThread Lib "kernel32" (ByVal hThread As Long) As Long
Private Declare Function SetThreadPriority Lib "kernel32" (ByVal hThread As Long, ByVal nPriority As Long) As Long
Private Declare Function GetThreadPriority Lib "kernel32" (ByVal hThread As Long) As Long
Private Declare Function SuspendThread Lib "kernel32" (ByVal hThread As Long) As Long
Private Declare Function TerminateThread Lib "kernel32" (ByVal hThread As Long, ByVal dwExitCode As Long) As Long
Public Sub Initialize(ByVal lpfnBasFunc As Long)

Dim lStackSize As Long, lCreationFlags As Long, lpThreadId As Long, lNull As Long

On Error Resume Next
lNull = 0
lStackSize = 0
lCreationFlags = CREATE_SUSPENDED
uThread.Handle = CreateThread(lNull, lStackSize, lpfnBasFunc, lNull, lCreationFlags, lpThreadId)
If uThread.Handle = lNull Then MsgBox "Create thread failed!"

End Sub
Public Property Get Enabled() As Boolean

On Error Resume Next
Enabled = uThread.Enabled

End Property
Public Property Let Enabled(ByVal vNewValue As Boolean)

On Error Resume Next
If vNewValue And (Not uThread.Enabled) Then
ResumeThread uThread.Handle
uThread.Enabled = True
ElseIf uThread.Enabled Then
SuspendThread uThread.Handle
uThread.Enabled = False
End If

End Property
Public Property Get Priority() As Long

On Error Resume Next
Priority = GetThreadPriority(uThread.Handle)

End Property
Public Property Let Priority(ByVal vNewValue As Long)

On Error Resume Next
If vNewValue = -2 Then
Call SetThreadPriority(uThread.Handle, THREAD_PRIORITY_LOWEST)
ElseIf vNewValue = -1 Then
Call SetThreadPriority(uThread.Handle, THREAD_PRIORITY_BELOW_NORMAL)
ElseIf vNewValue = 0 Then
Call SetThreadPriority(uThread.Handle, THREAD_PRIORITY_NORMAL)
ElseIf vNewValue = 1 Then
Call SetThreadPriority(uThread.Handle, THREAD_PRIORITY_ABOVE_NORMAL)
ElseIf vNewValue = 2 Then
Call SetThreadPriority(uThread.Handle, THREAD_PRIORITY_HIGHEST)
End If

End Property
Private Sub Class_Terminate()

On Error Resume Next
Call TerminateThread(uThread.Handle, 0)

End Sub
---------------------在主程序中---------------------
Dim myThreadTop As New clsThreads, myThreadBottom As New clsThreads

On Error Resume Next
With myThreadTop
.Initialize AddressOf FlickerTop
.Enabled = True
End With
'处理其他程序
...

'注意使用后释放资源
Set myThreadTop = Nothing
Set myThreadBottom = Nothing