Timer

  + Object
    + Timer

The Timer class implements the necessary functionality to raise an event at regular intervals. This class is instantiable but not derivable or cloneable.

To use this object, instantiate it, set the time interval required between events using the Interval property then activate the timer using the Enabled property. From this moment Timer events are raised. The following example which should be copied onto a form containing a Label control shows how this works :

Private tm as New Timer
Private iCount as Integer

Private Sub Form_Load()
  tm.Interval = 500
  tm.Enabled = True
End Sub

Private Sub Form_Unload()
  tm.Enabled = False
End Sub

Private Sub tm_Timer()
  iCount = iCount + 1
  Label1.Caption = iCount
End Sub

You can access different properties of this class when you handle the Timer event. The following example which should be copied onto a form containing a Button control shows how to create a one shot timer :

Private tm as New Timer

Private Sub Button1_Click()
  tm.Interval = 1000
  tm.Enabled = True
End Sub

Private Sub tm_Timer()
  tm.Enabled = False
  MsgBox "One shot timer"
End Sub

Note that to correctly receive events raised by a Timer object, its Recipient property should be correctly initialized. Refer to the documentation of this property for further information.

Members	Description

Enabled	Indicates if a Timer object is active or not.
Interval	Number of milliseconds between two events.
Timer	Occurs when the preset interval has elapsed.

Inherited from Object	Description

ClassID	Returns the type identifier corresponding to the actual class of the object.
Implements	Determines whether the object implements the features of a given class.
Iterate	Event raised to iterate over the elements of a container object.
Recipient	Recipient of events sent by the object.
Serialize	Event raised to serialize the object content into a stream.

System	Minimal version	Remarks

Palm OS	Palm OS 3.0	N/A