IPin::QueryDirection
This method retrieves the direction for this pin.
HRESULT QueryDirection(
PIN_DIRECTION* pPinDir
);
Parameters
- pPinDir
[out] Pointer to a PIN_DIRECTION variable.
Return Values
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
The returned pPinDir parameter will contain PINDIR_INPUT if the pin is an input pin or PINDIR_OUTPUT otherwise. The same information is available by using IPin::QueryPinInfo, but this method is more direct and more efficient.
Requirements
DirectShow applications and DirectShow filters have different include file and link library requirements. See Setting Up the Build Environment for more information.
OS Versions: Windows CE 2.12 and later. Version 2.12 requires DXPAK 1.0 or later.
See Also
Last updated on Wednesday, April 13, 2005
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