Simple Loop Question

I figured out all about DoEvents yesterday.

I'll try to explain:

Code:

---

Private Sub DoSomething()
  Text1 = "working"
  Do Until Text1 = "Quit"
        DoEvents
  Loop
  Text1 = "Ready"
End Sub

Private Sub Command1_Click()
    DoSomething
End Sub

Private Sub Command2_Click()
    Text1 = "Quit"
    Do Until Text1 = "Ready"
        DoEvents
    Loop
    MsgBox "Hello"
End Sub

---

It never gets out of the Do..Loop in Command2.

Any suggestions to fix this or even a different thought process would be greatly appreciated.

Looks like you haven't quite got what the use of doevents is - look at this thread : http://forums.vb-world.net/showthrea...threadid=55745

I think your code is in a kind of catch 22 situation.
Try this code :

Code:

---

Private Sub DoSomething()
  Text1 = "working"
  Do Until Text1 = "Quit"
        DoEvents
  Loop
  Text1 = "Ready"
  MsgBox "Hello"
End Sub

Private Sub Command1_Click()
    DoSomething
End Sub

Private Sub Command2_Click()
    Text1 = "Quit"
End Sub

---

- jamie

What are you trying to do?

Code:

---

'Use a boolean variable to stop a For Next Loop

Option Explicit

Dim bGetOut As Boolean 'trigger to stop loop

Private Sub Command1_Click()
bGetOut = False 'reset if you want to start again
Dim myInt As Integer 'incremen

'display a random number as form caption in a loop

Do While Not bGetOut
Randomize 'Rnd Function
myInt = myInt + CInt(Rnd * 10) + 1 'create new caption
Me.Caption = myInt
DoEvents
Loop
End Sub

Private Sub Form_DblClick()
'dbl click the form to stop the loop
bGetOut = True
End Sub

---

Both of the examples that were given is basically the same as my original code w/o the Do..Loop in Command2.

The only problem with that is I haven't verified that I'm out of the other Loop before I move on to something else.

Well the example you gave is a little silly ...
Give us something more substantial and we'll see.

- jamie

I agree, it was silly but the structure was understood.

What it's actually doing is the user keys in a stock symbol and then the program begins to download a bunch of information for that stock which takes a while. In case the user changes their mind and keys in another stock I want to cancel grabbing all the previous stock info and start downloading the new stock info.

I think someone posted this kinda thing already in here.
However,

try the following ...

Code:

---

Private Sub DownloadData_Click()
    Winsock1.Connect ...
End Sub
Private Sub Winsock1_Connect()
    Do While DoLoop
        'Download commands ...
    Loop
End Sub
Private Sub StopDownload_Click()
    DoLoop = False
End Sub

---

- jamie

the example was just to give you somthing to play with

Code:

---

Dim bReady As Boolean

Private Sub DoSomething()
    Do While bReady = False
    Me.Caption = CInt(Rnd * 120)
        DoEvents
  Loop
End Sub

Private Sub Command1_Click()
    DoSomething
End Sub

Private Sub Command2_Click()
      Do While bReady = True
        DoEvents
    Loop
    MsgBox "Hello"
End Sub

---

HeSaidJoe, you reference bReady a few times in your example but you never set it or change it. How do any of the loops exit?

Code:

---

Dim bReady As Boolean

Private Sub DoSomething()
    Do While Not bReady
    Me.Caption = CInt(Rnd * 1200)
    'reset in here when you get whatever you are looking for
    If Me.Caption = 1000 Then
      bReady = True
      Command2_Click
      Exit Do
    End If
        DoEvents
    Loop
   
End Sub

Private Sub Command1_Click()
    bReady = False
    DoSomething
End Sub

Private Sub Command2_Click()
    bReady = True
    MsgBox "Hello"
End Sub

---