IltmmCapture::CanSaveObjectSettings

#include "ltmm.h"

C Syntax

HRESULT IltmmCapture_CanSaveObjectSettings(pCapture, Flags, Status)

C++ Syntax

HRESULT CanSaveObjectSettings(Flags, Status)

 

IltmmCapture *pCapture;

/* pointer to an interface */

long Flags;

/* flags */

VARIANT_BOOL *Status;

/* pointer to a variable */

Determines whether the specified settings can be saved.

Parameter

Description

pCapture

Pointer to an IltmmCapture interface.

Flags

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

Status

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

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

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

See Also

Elements:

IltmmCapture::SaveSettingsToFile, IltmmCapture::LoadSettingsFromFile, IltmmCapture::LoadSettingsFromStream, IltmmCapture::SaveSettingsToStream

Topics:

Multimedia Function Group

Example

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

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