IFilterGraph::Reconnect
A version of this page is also available for
4/8/2010
This method disconnects this and the pin to which it connects and then reconnects it to the same pin. This allows the details of the connection, such as media type and allocator, to be renegotiated.
Syntax
HRESULT Reconnect(
IPin* ppin
);
Parameters
- ppin
[in] Pin to disconnect and reconnect.
Return Value
Returns an HRESULT value that depends on the implementation. HRESULT can be one of the following standard constants, or other values not listed.
| Value | Description |
|---|---|
E_FAIL |
Failure. |
E_POINTER |
Null pointer argument. |
E_INVALIDARG |
Invalid argument. |
E_NOTIMPL |
Method is not supported. |
S_OK or NOERROR |
Success. |
Remarks
This method performs its operation on a separate thread that will not hold any relevant locks. It can be called by a pin or filter to allow renegotiation of the connection. When a transform filter has its input connected, it must agree upon some media type. When the output is connected, it might discover that, to please both its upstream and downstream connections, it would have been better to have chosen a different media type for the upstream connection. The solution is to reconnect the input pin. The caller of this method should ensure (for example, by calling IPin::QueryAccept) that the resulting renegotiation will succeed, because the reconnection process is performed asynchronously and there is no mechanism for reporting or correcting errors.
Requirements
| Windows Embedded CE | Windows CE 2.12 and later |
| Windows Mobile | Pocket PC for Windows Mobile Version 5.0 and later, Smartphone for Windows Mobile Version 5.0 and later |
| Note | Microsoft DirectShow applications and DirectShow filters have different include file and Library requirements For more information, see Setting Up the Build Environment, Windows CE 2.12 requires DXPAK 1.0 or later |