OverlayBitmap.ReleaseDC Method |
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This method releases the device context of the OverlayBitmap object. | ||||||||||||||
Syntax: | Public Sub ReleaseDC( hdc As Long ) |
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Limitations: | Run time only. Only after ICImagingControl.LiveStart has been called once. |
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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. |
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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 |
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See also: | OverlayBitmap, OverlayBitmap.GetDC |