Save / Set timer

[CyberCarsten]

Hi!
I'm building a program that can
shutdown the computer after a
certain time.
Then i want the user to
adjust the timer interval, but i can't
get it to work!!
The must retrieve the timer-interval
from the registry or from a file...etc...

/ CyberCarsten [^Cc^]

[Aaron Young]

Try using the Timer Function in conjunction with a Timer Control, eg.

Private tInterval As Long 'Interval in Minutes
Private Sub Timer1_Timer()
    Static tTimer As Single
    If tTimer = 0 Then tTimer = Timer
    If (Timer - tTimer) >= (tInterval * 60) Then
        'ShutDown the Computer
        Timer1.Enabled = False
    End If
End Sub

Then, to Adjust, Save/Restore the Interval, simply Modify the value of tInterval in Minutes.


------------------
Aaron Young
Analyst Programmer
[email protected]
[email protected]

[razzaj]

well .. what young proposed is fine ...
but this way when the computer starts again
the time the user set will be erased because it is in memory.
using registry is fine but here is a simpler way :

start a blanc project
- insert a timer control
- insert a text control
- insert a command button
in module :


Declare Function ExitWindowsEx Lib "user32" _
(ByVal uFlags As Long, ByVal dwReserved As Long) As Long


public Const EWX_SHUTDOWN = &H1
public timetoclose as long


in form code :

- in text_keypress
if keyascii = 13 and text1 <> "" then
open "c:\shutdown.set" for output as #1
print #1 , text1
close #1
timetoclose = val (text1) * 1000
me.hide
initcounter
end if
- in timer1_timer
timer1.enabled = false
ExitWindowsEx EWX_SHUTDOWN
end sub

- in form_load
dim a as string
open "c:\shutdown.set" for input as #1
input #1 , a
close #1
text1 = val(a)
timetoclose = text1* 1000
initcounter
end sub

- in command1_click
me.hide
initcounter
end sub


- create a sub called initcounter
public function initcounter ()
timer1.interval = timetoclose
timer1.enabled = true
end function


user's manual :
-------------------
1 - i think that is it i havent tried it
but if u have any problem just message me
back.
2 - ur aim was not too clear so i tryed to
give the most satisfying answer
3- before starting the program just go to
"c:\" and create a file called
"shutdown.set" write in it anything
a number for instance u need to do this
only the first time u run the program
. icould have given u a more complete
code but it is late now i have to sleep .
4- when the form shows input in the textbox
a number (minutes) and PRESS ENTER
5- if the next time u start the program
u dont want to change the time just press
the command button
6 - i know this is far form being the best
and efficient code but i really feel
sleepy.
7 - if u need any help again .... just
message me anytime i ll be gald to help


- Regards -
- razzaj -

[CyberCarsten]

Thanx guys!!!

[CyberCarsten]

razzaj , that didn't work...

[Aaron Young]

The Code I Posted will work, all you have to do is save/set the value of tInterval, eg.

Private tInterval As Long 'Interval in Minutes

Private Sub Timer1_Timer()
    Static tTimer As Single
    Dim lSecs As Long
    Dim iMins As Integer
    Dim iHrs As Integer
    
    If tTimer = 0 Then tTimer = Timer
    If (Timer - tTimer) >= (tInterval * 60) Then
        'ShutDown the Computer
        Timer1.Enabled = False
    End If
    lSecs = (tInterval * 60) - Int(Timer - tTimer)
    iHrs = Int((lSecs / 60) / 60)
    iMins = Int((lSecs / 60) - (iHrs * 60))
    lSecs = (lSecs - (iMins * 60) - (iHrs * 360)) Mod 60
    Caption = "Shutdown in " & _
    Right("00" & iHrs, 2) & ":" & Right("00" & iMins, 2) & ":" & Right("00" & lSecs, 2)
End Sub

Private Sub Form_Load()
    'Get the Stored Time Interval, Default to 1 Hour (60 Mins).
    tInterval = Val(GetSetting(App.Title, "Interval", "Value", "60"))
    If MsgBox("Do You Wish to Change the Time Interval?" & _
    vbCrLf & vbCrLf & _
    "It is Currently..  " & tInterval & _
    " Minutes.", vbQuestion + vbYesNo, "Timer Interval") = vbYes Then
        tInterval = Val(InputBox("Enter a new Interval in Minutes: ", "Set Interval", _
        tInterval))
    End If
    'Save the Interval to the Registry
    SaveSetting App.Title, "Interval", "Value", Trim(Str(tInterval))
    Timer1.Interval = 100
End Sub

------------------
Aaron Young
Analyst Programmer
[email protected]
[email protected]

[CyberCarsten]

Thank you Aaron!!!
That worked!! : - )