ILayoutStorage::LayoutScript method (objidl.h)
The LayoutScript method provides explicit directions for reordering the storages, streams, and controls in a compound file to match the order in which they are accessed during the download.
HRESULT LayoutScript( [in] StorageLayout *pStorageLayout, [in] DWORD nEntries, [in] DWORD glfInterleavedFlag );
Pointer to an array of StorageLayout structures.
Number of entries in the array of StorageLayout structures.
Reserved for future use.
This function supports the standard return values E_OUTOFMEMORY, E_UNEXPECTED, E_INVALIDARG, and E_FAIL, as well as the following:
|STG_E_INVALIDPOINTER||The storage layout pointer is invalid.|
|STG_E_INVALIDFLAG||The value of glfInterleavedFlag is invalid.|
|STG_E_PATHNOTFOUND||The new document file name specified is invalid.|
|STG_E_INSUFFICIENTMEMORY||There is not enough memory to complete the operation.|
|STG_E_INVALIDPARAMETER||One of the parameters is invalid.|
|STG_E_INUSE||The BeginMonitor method was called while ILayoutStorage was already monitoring.|
To provide explicit layout instructions, the application calls ILayoutStorage::LayoutScript, passing an array of StorageLayout structures. Each structure defines a single storage or stream data block and specifies where the block is to be written in the ILockBytes byte array.
An application can combine scripted layout with monitoring, as the structure of a particular compound file may dictate.
When the optimal data-layout pattern of an entire compound file has been determined, the application calls ILayoutStorage::ReLayoutDocfile to restructure the compound file to match the order in which its data sectors were accessed.
|Minimum supported client||Windows 2000 Professional [desktop apps | UWP apps]|
|Minimum supported server||Windows 2000 Server [desktop apps | UWP apps]|