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IWMDMOperation::GetObjectTotalSize

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The GetObjectTotalSize method retrieves the total size of an object, in bytes.

Syntax

HRESULT GetObjectTotalSize(
  DWORD*  pdwSize,
  DWORD*  pdwSizeHigh
);

Parameters

pdwSize

[out]  Pointer to a DWORD that, on return, contains the low-order bits of the object size in bytes.

pdwSizeHigh

[out]  Pointer to a DWORD that, on return, contains the high-order bits of the object size in bytes.

Return Values

The method returns an HRESULT. All the interface methods in Windows Media Device Manager and service provider can return any of the following classes of error codes:

  • Standard COM error codes
  • Windows error codes converted to HRESULT values
  • Windows Media Device Manager error codes

For a complete list of possible error codes, see Error Codes.

Possible values include, but are not limited to, those in the following table.

Return code Description
S_OK The method succeeded.
WMDM_E_USER_CANCELLED The application instructs Windows Media Device Manager to cancel the current operation without waiting for it to finish.
E_FAIL An unspecified error occurred.

Remarks

This method is called after the GetObjectAttributes method has been called. When transferring, the object implementing this interface is passed the total size of the content being sent.

If either E_FAIL or WMDM_E_USER_CANCELLED is returned from this call, the operation is cancelled and the End method is called. If the application is using block mode and returns WMDM_E_USER_CANCELLED, then Windows Media Device Manager will return this same error to the application.

Requirements

Header: Defined in wmdm.idl.

Library: mssachlp.lib

See Also