IC Imaging Control ActiveX

OverlayBitmap.ReleaseDC Method

OverlayBitmap.ReleaseDC Method

This method releases the device context of the OverlayBitmap object.
Syntax:

Public Sub ReleaseDC( hdc As Long )
Parameter Description
hdc

Specifies the DC to release.

Limitations:

Run time only. Only after ICImagingControl.LiveStart has been called once.

Remarks:

If a device context is no longer used, an application must call ReleaseDC to release it. Not releasing a device context causes handle leaks.

Example:

This Basic example demonstrates how to retrieve and release the device context used by the OverlayBitmap object

Dim ob As OverlayBitmap
Dim obDC As Long
Set ob = ICImagingControl1.OverlayBitmap
obDC = ob.GetDC
If obDC <> 0 Then
    ' Some GDI graphic functions can be performed now.
    ob.ReleaseDC obDC
End If
See also: OverlayBitmap, OverlayBitmap.GetDC

<< ICImagingControl.OverlayBitmap

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