OverlayClear
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Description

Clears graphics and text from the overlay.


Syntax


[VB]
objActiveDcam.OverlayClear


[C/C++]
HRESULT OverlayClear();


Parameters

None  


Return Values


S_OK  
Success  
E_FAIL  
Failure.  

Example


The following VB example moves a red rectangle over the live image by repeatedly erasing and drawing it:

Private Sub
 Form_Load()
x = 0
ActiveDcam1.Acquire = 
True

ActiveDcam1.OverlayColor = RGB(255, 0, 0)
ActiveDcam1.Overlay = 
True
End Sub



Dim x As Integer
Private Sub ActiveDcam1_FrameAcquired()
ActiveDcam1.OverlayClear
ActiveDcam1.OverlayRectangle x, 10, x + 50, 80, 3
x = x + 2
If x = ActiveDcam1.SizeX Then
x = 0
End If
End Sub


Remarks

To create animation effects, use this method in combination with OverlayColor, OverlayPixel, OverlayLine, OverlayRectangle, OverlayEllipse, OverlayText.