• Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 1005
  • Last Modified:

Need VB6 DELAY func/sub to delay hundreths of a sec

Tho old dos PowerBasic had a DELAY stmt whose only operand was 'seconds.hundredths'. I need one for VB6. It's application is for slowing down pixel setting so you can see each pixel as it is set. Without a machine-independent delay its a blur. The pixels are rendering geometric equations.
0
shifty12
Asked:
shifty12
1 Solution
 
nffvrxqgrcfqvvcCommented:
sleep(1)
0
 
Mark_FreeSoftwareCommented:
with this declaration:

Declare Sub Sleep Lib "kernel32" Alias "Sleep" (ByVal dwMilliseconds As Long)

and the above statement you have a delay
0
 
[ fanpages ]IT Services ConsultantCommented:
The "Sleep()" API routine suspends all use of the application for the specified duration of time.

If you fancy trawling through a PAQ that I contributed to (although I don't recommend you do as it was quite a headache!):

"Setting VB code to listen on com port for input"
[ http://www.experts-exchange.com/Applications/MS_Office/Excel/Q_21582596.html ]

Here you'll find alternate code I provided to replace the Sleep() API call [using the same syntax, so interchangeable] that allows the use of the application (for example, minimizing, closing, moving the main window, etc) during the "pause" routine:

Private Function Sleep(ByVal lngMilliseconds As Long)

' Stub routine to call Pause() instead of "Sleep()" API...

  On Error Resume Next
 
  Call Pause(CDbl(lngMilliseconds / 1000&))
 
End Function
Private Function dblTimeStamp(Optional ByVal dblSeconds As Double = 0#) As Double

  On Error Resume Next
 
  dblTimeStamp = CDbl(Int(Now()) + (Timer + dblSeconds) / 86400)    ' 86400 = 60 seconds * 60 minutes * 24 hours
 
End Function
Private Sub Pause(ByVal dblSeconds As Double)

  Dim blnWend                                           As Boolean
  Dim dblTime                                           As Double
 
  On Error Resume Next
 
  dblTime = dblTimeStamp(dblSeconds)
 
  blnWend = (dblTimeStamp >= dblTime)
 
  While Not (blnWend)
 
      DoEvents
     
      blnWend = (dblTimeStamp >= dblTime)
     
  Wend
 
End Sub


BFN,

fp.
0
 
fostejoCommented:
shifty12,

Following on from fanpages' post, the similar routine I usually use is:

Function Pause(tmpSeconds As Single)
    t = Timer
    While t + tmpSeconds > Timer
        DoEvents
    Wend
End Function

This, again, allows the application to be used as normal rather than 'suspending' it.

cheers
0

Featured Post

Prep for the ITIL® Foundation Certification Exam

December’s Course of the Month is now available! Enroll to learn ITIL® Foundation best practices for delivering IT services effectively and efficiently.

Tackle projects and never again get stuck behind a technical roadblock.
Join Now