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IltmmConvert::CanSaveObjectSettings

#include "ltmm.h"

C Syntax	HRESULT IltmmConvert_CanSaveObjectSettings(pConvert, flags, pVal)
C++ Syntax	HRESULT CanSaveObjectSettings(flags, pVal)

IltmmConvert pConvert;	pointer to an interface
long flags;	flags
VARIANT_BOOL pVal;	pointer to a variable

Determines whether the specified settings can be saved.

Parameter	Description
pConvert	Pointer to an IltmmConvert interface.
flags	Flags that indicate the settings to check. For a list of possible values, refer to the ltmmConvert_Settings constants.
pVal	Pointer to a variable to be updated with a value that indicates whether the specified settings can be saved. Possible values are:
	Value	Meaning
	VARIANT_TRUE	The specified settings can be saved.
	VARIANT_FALSE	The specified settings can not be saved.

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

The convert object's settings can be saved to a stream by calling IltmmConvert::SaveSettingsToStream. The convert object's settings can be saved to a file by calling IltmmConvert::SaveSettingsToFile.

Settings saved to a file can be loaded using IltmmConvert::LoadSettingsFromFile. Settings saved to a stream can be loaded using IltmmConvert::LoadSettingsFromStream.

It may be helpful to call IltmmConvert::CanSaveObjectSettings before calling either IltmmConvert::SaveSettingsToFile or IltmmConvert::SaveSettingsToStream, to make sure the settings you want to save can be saved. If either IltmmConvert::SaveSettingsToFile or IltmmConvert::SaveSettingsToStream is called for settings that cannot be saved, the save function will fail.

Multiple settings can be combined in the Flags parameter using the OR operator. However, please note that if settings are combined in the Flags parameter, all those settings must be capable of being saved in order for the CanSaveObjectSettings function to update the Status parameter with VARIANT_TRUE. If even one of those settings cannot be saved, then CanSaveObjectSettings will update the Status parameter with VARIANT_FALSE.

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

Example

For a C example, refer to IltmmConvert::CanSaveObjectSettings Example for C.

For a C++ example, refer to IltmmConvert::CanSaveObjectSettings Example for C++.

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Elements:	IltmmConvert::SaveSettingsToFile, IltmmConvert::LoadSettingsFromFile, IltmmConvert::LoadSettingsFromStream, IltmmConvert::SaveSettingsToStream
Topics:	Multimedia Function Group