IAMLine21Decoder::SetDrawBackgroundMode
| Microsoft DirectShow 9.0 |
IAMLine21Decoder::SetDrawBackgroundMode
The SetDrawBackgroundMode method specifies whether the Line 21 Decoder filter draws the captions on a transparent background or an opaque background. By default, the caption background is opaque.
Syntax
HRESULT SetDrawBackgroundMode( AM_LINE21_DRAWBGMODE Mode );
Parameters
Mode
Specifies a member of the AM_LINE21_DRAWBGMODE enumeration.
Return Values
Returns an HRESULT value. Possible values include the following.
| Value | Description |
| E_INVALIDARG | Invalid argument |
| S_OK | Success |
Requirements
Header: Include il21dec.h.
Library: Use Strmiids.lib.
See Also