by Raghuraja.C (12 Submissions)
Category: Custom Controls/Forms/Menus
Compatability: VB 6.0
Difficulty: Unknown Difficulty
Originally Published: Thu 6th February 2003
Date Added: Mon 8th February 2021
Rating: 
(1 Votes)
To Store and Retrive Values to Registry
API Declarations
Dim datInActiveDate As Date
Dim datNotValid As Date
Dim datStarted As Date
Dim datFinished As Date
VBcoders
'First Get the Value from the Registry
strStoredFromRegistry = GetSetting("Win32rgc", "WhenGoingToInActive", "WhichDateStarted")
'If the Registry Value is not set then Set he Value
If Len(Trim(strStoredFromRegistry)) < 1 Then
SaveSetting "Win32rgc", "WhenGoingToInActive", "WhichDateStarted", Date
'Add 50 days to the Current Date
datInActiveDate = DateAdd("d", 50, Date)
'Here I have Given 15 days for expiration of the Software You can Give 'n' no of days as you like
SaveSetting "Win32rgc", "WhenGoingToInActive", "WhichDateStarted", datInActiveDate
Else
'If this Registry Value is not Set then
datNotValid = GetSetting("Win32rgc", "WhenGoingToInActive", "WhichDateStarted")
If Len(Trim(datNotValid)) < 1 Then
'Get the Previously set Initial Value from the Registry
strStoredFromRegistry = GetSetting("Win32rgc", "WhenGoingToInActive", "WhichDateStarted")
datStarted = CDate(strStoredFromRegistry)
'Get the Expiry Value from the Registry
datFinished = GetSetting("Win32rgc", "WhenGoingToInActive", "WhichDateStarted")
datInActiveDate = CDate(datInActiveDate)
'Compare Registry Values with the Date, if they are bound with in the Initial Value of the Software and Expiry Value of the SOftware then only the Program will run
If Date > datInActiveDate Or Date < datStarted Then
'Now set the Used Date value to True
SaveSetting "Win32rgc", "Expiry", "Used Date", "True"
MsgBox "Your Application has Expired; You cannot run this Application.", vbExclamation, "Application Expired"
End
Else
MsgBox " " & datFinished - Date & " days of evaluation period is remaining", vbExclamation, "Application Expired"
End If
Else
MsgBox "Application has Expired; You cannot run this Application.", vbExclamation, "Application Expired"
End
End If
End If
