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IltmmPlay::CanSaveObjectSettings

Summary

Determines whether the specified settings can be saved.

Syntax

#include "ltmm.h"

Language	Syntax
C	HRESULT IltmmPlay_CanSaveObjectSettings(pPlay, flags, pVal)
C++	HRESULT CanSaveObjectSettings(flags, pVal)

Parameters

IltmmPlay *pCapture

Pointer to an IltmmPlay interface.

long flags

Flags that indicate the settings to check. For a list of possible values, refer to the ltmmPlay_Settings constants.

VARIANT_BOOL *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

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

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

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

It may be helpful to call IltmmPlay::CanSaveObjectSettings before calling either IltmmPlay::SaveSettingsToFile or IltmmPlay::SaveSettingsToStream, to make sure the settings you want to save can be saved. If either IltmmPlay::SaveSettingsToFile or IltmmPlay::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.