IltmmTargetFormat::get_UseFilterCache

#include "ltmm.h"

C Syntax

HRESULT IltmmTargetFormat_get_UseFilterCache(pTargetFormat, pVal)

C++ Syntax

HRESULT get_UseFilterCache(pVal)

IltmmTargetFormat * pTargetFormat;

pointer to an interface

VARIANT_BOOL *pVal;

pointer to a variable

Queries whether the toolkit is currently caching filters.

Parameter Description
pTargetFormat Pointer to the IltmmTargetFormat interface that references the target format object.
pVal Pointer to a variable to be updated with a value that indicates whether the toolkit is caching filters. Possible values are:
  Value Meaning
  VARIANT_TRUE The toolkit is caching filters.
  VARIANT_FALSE The toolkit is not caching filters. This is the default value.

Returns

S_OK

The function was successful.

<> S_OK

An error occurred. Refer to the Error Codes or the HRESULT error codes in the DirectShow documentation.

Comments

Use the IltmmTargetFormat::get_UseFilterCache function to query whether the toolkit is currently caching filters. It returns the value that was set using the IltmmTargetFormat::put_UserFilterCache function. Use the IltmmTargetFormat::put_UseFilterCache function to enable or disable caching for the target format. Use the IltmmTargetFormat::GetCacheObject function to retrieve the caching filter object. Use the IltmmTargetFormat::ShowCacheDialogfunction to display a specific property dialog for the caching filter. Use the IltmmTargetFormat::HasCacheDialog function to query whether the specified property dialog for the caching filter is available.

Required DLLs and Libraries

LTMM

For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application.

Platforms

Win32, x64

See Also

Elements:

IltmmTargetFormat::put_UseFilterCache, IltmmTargetFormat::GetCacheObject, IltmmTargetFormat::HasCacheDialog, IltmmTargetFormat::ShowCacheDialog, IltmmCapture::GetSubObject, IltmmConvert::GetSubObject

Topics:

Multimedia Function Group

Example

For a C example, refer to IltmmTargetFormat::CreateTargetFormats.

For a C example, refer to IltmmTargetFormat::put_UseFilterCache.

For a C++ example, refer to IltmmTargetFormat::CreateTargetFormats.

For a C++ example, refer to IltmmTargetFormat::put_UseFilterCache.

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