IltmmTargetFormat::HasCacheDialog

Summary

Queries whether the specified property dialog for the caching filter is available.

Syntax

#include "ltmm.h"

Language Syntax
C HRESULT IltmmTargetFormat_HasCacheDialog(pTargetFormat, Dialog, pHasDialog)
C++ HRESULT HasCacheDialog(Dialog, pHasDialog)

Parameters

IltmmTargetFormat *pTargetFormat

Pointer to the IltmmTargetFormat interface that references the target format object.

long Dialog

Value that specifies which dialog to display. Must be one of the ltmmTargetFormat_Dlg constants.

VARIANT_BOOL *pHasDialog

Pointer to a variable to be updated with a value that indicates whether the specified property dialog is available. Possible values are:

Value Meaning
VARIANT_TRUE The dialog is available.
VARIANT_FALSE The dialog is not available.

Returns

Value Meaning
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 caching filters. It returns the value that was set using the IltmmTargetFormat::put_UserFilterCache. 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::ShowCacheDialog function 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

Platforms

Win32, x64.

See Also

Functions

Topics

Example

Language Example
C IltmmTargetFormat::CreateTargetFormats
C++ IltmmTargetFormat::CreateTargetFormats
Help Version 22.0.2023.1.26
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© 1991-2023 LEAD Technologies, Inc. All Rights Reserved.