IFillLockBytes::SetFillSize method (objidl.h)
The SetFillSize method sets the expected size of the byte array.
Syntax
HRESULT SetFillSize(
[in] ULARGE_INTEGER ulSize
);
Parameters
[in] ulSize
Size in bytes of the byte array object that is to be filled in subsequent calls to IFillLockBytes::FillAppend.
Return value
This function supports the standard return values E_OUTOFMEMORY, E_UNEXPECTED, E_INVALIDARG, and E_FAIL.
Remarks
If SetFillSize has not been called, any call to ILockBytes::ReadAt that attempts to access data that has not yet been written using IFillLockBytes::FillAppend or IFillLockBytes::FillAt will return a new error message, E_PENDING. After SetFillSize has been called, any call to ReadAt that attempts to access data beyond the current size, as set by SetFillSize, returns E_FAIL instead of E_PENDING.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 2000 Professional [desktop apps | UWP apps] |
| Minimum supported server | Windows 2000 Server [desktop apps | UWP apps] |
| Target Platform | Windows |
| Header | objidl.h |
| Library | Uuid.lib |
| DLL | Ole32.dll |