Instance Checker
This simple few lines of code will give the user and error message if they are already running your program. Doesn't apply if you are in the ide!
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Source Code
Private Sub Form_Load() ' the form1 loading sub If App.PrevInstance Then ' check if running MsgBox "Error:" & vbCrLf & "Please switch to your already running app." ' error message Dim frm As Form ' set frm variable as a form For Each frm In Forms ' get all forms Unload frm ' unload the form Set frm = Nothing ' set frm variable as nothing Next frm ' go to the for each frm again End If ' end the if statement End Sub ' end the form load
Original Comments (3)
Recovered from Wayback Machine