Package com.sun.jna.platform.win32

# Interface OleAuto

All Superinterfaces:
  `AltCallingConvention`, `Library`, `StdCall`, `StdCallLibrary`

public interface OleAuto extends StdCallLibrary
Oleaut32.dll Interface.

Author:
  scott.palmer

## Nested Class Summary

Nested Classes
Modifier and Type
Interface
Description
`static class`
`OleAuto.DISPPARAMS`
The Class DISPPARAMS.

## Nested classes/interfaces inherited from interface com.sun.jna.Library

`Library.Handler`

## Nested classes/interfaces inherited from interface com.sun.jna.win32.StdCallLibrary

`StdCallLibrary.StdCallCallback`

## Field Summary

Fields
Modifier and Type
Field
Description
`static final int`
`DISPATCH_METHOD`
The Constant DISPATCH_METHOD.
`static final int`
`DISPATCH_PROPERTYGET`
The Constant DISPATCH_PROPERTYGET.
`static final int`
`DISPATCH_PROPERTYPUT`
The Constant DISPATCH_PROPERTYPUT.
`static final int`
`DISPATCH_PROPERTYPUTREF`
The Constant DISPATCH_PROPERTYPUTREF.
`static final int`
`FADF_AUTO`
An array that is allocated on the stac.
`static final int`
`FADF_BSTR`
An array of BSTRs.
`static final int`
`FADF_DISPATCH`
An array of IDispatch*.
`static final int`
`FADF_EMBEDDED`
An array that is embedded in a structure.
`static final int`
`FADF_FIXEDSIZE`
An array that is embedded in a structure.
`static final int`
`FADF_HAVEIID`
An array that is embedded in a structure.
`static final int`
`FADF_HAVEVARTYPE`
An array that has a variant type.
`static final int`
`FADF_RECORD`
An array that is embedded in a structure.
`static final int`
`FADF_RESERVED`
Bits reserved for future use.
`static final int`
`FADF_STATIC`
An array that is statically allocated.
`static final int`
`FADF_UNKNOWN`
An array of IUnknown*.
`static final int`
`FADF_VARIANT`
An array of VARIANTs.
`static final OleAuto`
`INSTANCE`
The instance.
`static final short`
`VARIANT_ALPHABOOL`
For VT_BOOL to VT_BSTR conversions, convert to "True"/"False" instead of "-1"/"0"
`static final short`
`VARIANT_CALENDAR_GREGORIAN`
SOUTHASIA calendar support
`static final short`
`VARIANT_CALENDAR_HIJRI`
`static final short`
`VARIANT_CALENDAR_THAI`
SOUTHASIA calendar support
`static final short`
`VARIANT_LOCALBOOL`
For VT_BOOL to VT_BSTR and back, convert to local language rather than English
`static final short`
`VARIANT_NOUSEROVERRIDE`
For conversions to/from VT_BSTR, passes LOCALE_NOUSEROVERRIDE to core coercion routines
`static final short`
`VARIANT_NOVALUEPROP`
`static final short`
`VARIANT_USE_NLS`
NLS function call support

### Fields inherited from interface com.sun.jna.Library

`OPTION_ALLOW_OBJECTS, OPTION_CALLING_CONVENTION, OPTION_CLASSLOADER, OPTION_FUNCTION_MAPPER, OPTION_INVOCATION_MAPPER, OPTION_OPEN_FLAGS, OPTION_STRING_ENCODING, OPTION_STRUCTURE_ALIGNMENT, OPTION_SYMBOL_PROVIDER, OPTION_TYPE_MAPPER`

### Fields inherited from interface com.sun.jna.win32.StdCallLibrary

`FUNCTION_MAPPER, STDCALL_CONVENTION`

## Method Summary

Modifier and Type
Method
Description
`WinNT.HRESULT`
`GetActiveObject(Guid.GUID rclsid, WinDef.PVOID pvReserved, PointerByReference ppunk)`
Retrieves a pointer to a running object that has been registered with OLE.
`WinNT.HRESULT`
`LoadRegTypeLib(Guid.GUID rguid, int wVerMajor, int wVerMinor, WinDef.LCID lcid, PointerByReference pptlib)`
Uses registry information to load a type library.
`WinNT.HRESULT`
`LoadTypeLib(String szFile, PointerByReference pptlib)`
Loads and registers a type library.
`WinNT.HRESULT`
`SafeArrayAccessData(OaIdl.SAFEARRAY psa, PointerByReference ppvData)`
Lock array and retrieve pointer to data
`OaIdl.SAFEARRAY.ByReference`
`SafeArrayCreate(WTypes.VARTYPE vt, WinDef.UINT cDims, OaIdl.SAFEARRAYBOUND[] rgsabound)`
Creates a new array descriptor, allocates and initializes the data for the array, and returns a pointer to the new array descriptor.
`WinNT.HRESULT`
`SafeArrayDestroy(OaIdl.SAFEARRAY psa)`
Destroys an existing array descriptor and all of the data in the array.
`WinDef.UINT`
`SafeArrayGetDim(OaIdl.SAFEARRAY psa)`
Return number of dimensions of the SAFEARRAY
`WinNT.HRESULT`
`SafeArrayGetElement(OaIdl.SAFEARRAY psa, WinDef.LONG[] rgIndices, Pointer pv)`
Retrieves a single element of the array.
`WinDef.UINT`
`SafeArrayGetElemsize(OaIdl.SAFEARRAY psa)`
Get size of one element in bytes
`WinNT.HRESULT`
`SafeArrayGetLBound(OaIdl.SAFEARRAY psa, WinDef.UINT nDim, WinDef.LONGByReference bound)`
Retrieve the lower bound for the specified dimension of the supplied array
`WinNT.HRESULT`
`SafeArrayGetUBound(OaIdl.SAFEARRAY psa, WinDef.UINT nDim, WinDef.LONGByReference bound)`
Retrieve the upper bound for the specified dimension of the supplied array
`WinNT.HRESULT`
`SafeArrayGetVartype(OaIdl.SAFEARRAY psa, WTypes.VARTYPEByReference pvt)`
Return VARTYPE of the SAFEARRAY
`WinNT.HRESULT`
`SafeArrayLock(OaIdl.SAFEARRAY psa)`
Increments the lock count of an array, and places a pointer to the array data in pvData of the array descriptor.
`WinNT.HRESULT`
`SafeArrayPtrOfIndex(OaIdl.SAFEARRAY psa, WinDef.LONG[] rgIndices, PointerByReference ppv)`
Retrieves the pointer to a single element of the array.
`WinNT.HRESULT`
`SafeArrayPutElement(OaIdl.SAFEARRAY psa, WinDef.LONG[] idx, Pointer pv)`
Stores the data element at the specified location in the array.
`WinNT.HRESULT`
`SafeArrayRedim(OaIdl.SAFEARRAY psa, OaIdl.SAFEARRAYBOUND psaboundNew)`
Changes the right-most (least significant) bound of the specified safe array.
`WinNT.HRESULT`
`SafeArrayUnaccessData(OaIdl.SAFEARRAY psa)`
Unlock array and invalidate the pointer retrieved via SafeArrayAccessData
`WinNT.HRESULT`
`SafeArrayUnlock(OaIdl.SAFEARRAY psa)`
Decrements the lock count of an array so it can be freed or resized.
`WTypes.BSTR`
`SysAllocString(String sz)`
This function allocates a new string and copies the passed string into it.
`void`
`SysFreeString(WTypes.BSTR bstr)`
This function frees a string allocated previously by SysAllocString, SysAllocStringByteLen, SysReAllocString, SysAllocStringLen, or SysReAllocStringLen.
`int`
`SysStringByteLen(WTypes.BSTR bstr)`
Returns the length (in bytes) of a BSTR.
`int`
`SysStringLen(WTypes.BSTR bstr)`
Returns the length of a BSTR.
`int`
`SystemTimeToVariantTime(WinBase.SYSTEMTIME lpSystemTime, DoubleByReference pvtime)`
Converts a system time to a variant representation.
`WinNT.HRESULT`
`VariantChangeType(Variant.VARIANT.ByReference pvargDest, Variant.VARIANT.ByReference pvarSrc, short wFlags, WTypes.VARTYPE vt)`
Converts a variant from one type to another.
`WinNT.HRESULT`
`VariantChangeType(Variant.VARIANT pvargDest, Variant.VARIANT pvarSrc, short wFlags, WTypes.VARTYPE vt)`
Converts a variant from one type to another.
`WinNT.HRESULT`
`VariantClear(Variant.VARIANT pvarg)`
Use this function to clear variables of type VARIANTARG (or VARIANT) before the memory containing the VARIANTARG is freed (as when a local variable goes out of scope).
`WinNT.HRESULT`
`VariantCopy(Pointer pvargDest, Variant.VARIANT pvargSrc)`
First, free any memory that is owned by pvargDest, such as VariantClear (pvargDest must point to a valid initialized variant, and not simply to an uninitialized memory location).
`void`
`VariantInit(Variant.VARIANT pvarg)`
The VariantInit function initializes the VARIANTARG by setting the vt field to VT_EMPTY.
`void`
`VariantInit(Variant.VARIANT.ByReference pvarg)`
The VariantInit function initializes the VARIANTARG by setting the vt field to VT_EMPTY.
`int`
`VariantTimeToSystemTime(double vtime, WinBase.SYSTEMTIME lpSystemTime)`
Converts a variant representation of time to a system time.

## Field Details

### INSTANCE

static final OleAuto INSTANCE
The instance.

### DISPATCH_METHOD

static final int DISPATCH_METHOD
The Constant DISPATCH_METHOD.

See Also:
  - Constant Field Values

### DISPATCH_PROPERTYGET

static final int DISPATCH_PROPERTYGET
The Constant DISPATCH_PROPERTYGET.

See Also:
  - Constant Field Values

### DISPATCH_PROPERTYPUT

static final int DISPATCH_PROPERTYPUT
The Constant DISPATCH_PROPERTYPUT.

See Also:
  - Constant Field Values

### DISPATCH_PROPERTYPUTREF

static final int DISPATCH_PROPERTYPUTREF
The Constant DISPATCH_PROPERTYPUTREF.

See Also:
  - Constant Field Values

### FADF_AUTO

static final int FADF_AUTO
An array that is allocated on the stac.

See Also:
  - Constant Field Values

### FADF_STATIC

static final int FADF_STATIC
An array that is statically allocated.

See Also:
  - Constant Field Values

### FADF_EMBEDDED

static final int FADF_EMBEDDED
An array that is embedded in a structure.

See Also:
  - Constant Field Values

### FADF_FIXEDSIZE

static final int FADF_FIXEDSIZE
An array that is embedded in a structure.

See Also:
  - Constant Field Values

### FADF_RECORD

static final int FADF_RECORD
An array that is embedded in a structure.

See Also:
  - Constant Field Values

### FADF_HAVEIID

static final int FADF_HAVEIID
An array that is embedded in a structure.

See Also:
  - Constant Field Values

### FADF_HAVEVARTYPE

static final int FADF_HAVEVARTYPE
An array that has a variant type. The variant type can be retrieved with SafeArrayGetVartype.

See Also:
  - Constant Field Values

### FADF_BSTR

static final int FADF_BSTR
An array of BSTRs.

See Also:
  - Constant Field Values

### FADF_UNKNOWN

static final int FADF_UNKNOWN
An array of IUnknown*.

See Also:
  - Constant Field Values

### FADF_DISPATCH

static final int FADF_DISPATCH
An array of IDispatch*.

See Also:
  - Constant Field Values

### FADF_VARIANT

static final int FADF_VARIANT
An array of VARIANTs.

See Also:
  - Constant Field Values

### FADF_RESERVED

static final int FADF_RESERVED
Bits reserved for future use.

See Also:
  - Constant Field Values

### VARIANT_NOVALUEPROP

static final short VARIANT_NOVALUEPROP

See Also:
  - Constant Field Values

### VARIANT_ALPHABOOL

static final short VARIANT_ALPHABOOL
For VT_BOOL to VT_BSTR conversions, convert to "True"/"False" instead of "-1"/"0"

See Also:
  - Constant Field Values

### VARIANT_NOUSEROVERRIDE

static final short VARIANT_NOUSEROVERRIDE
For conversions to/from VT_BSTR, passes LOCALE_NOUSEROVERRIDE to core coercion routines

See Also:
  - Constant Field Values

### VARIANT_CALENDAR_HIJRI

static final short VARIANT_CALENDAR_HIJRI

See Also:
  - Constant Field Values

### VARIANT_LOCALBOOL

static final short VARIANT_LOCALBOOL
For VT_BOOL to VT_BSTR and back, convert to local language rather than English

See Also:
  - Constant Field Values

### VARIANT_CALENDAR_THAI

static final short VARIANT_CALENDAR_THAI
SOUTHASIA calendar support

See Also:
  - Constant Field Values

### VARIANT_CALENDAR_GREGORIAN

static final short VARIANT_CALENDAR_GREGORIAN
SOUTHASIA calendar support

See Also:
  - Constant Field Values

### VARIANT_USE_NLS

static final short VARIANT_USE_NLS
NLS function call support

See Also:
  - Constant Field Values

## Method Details

### SysAllocString

WTypes.BSTR SysAllocString(String sz)
This function allocates a new string and copies the passed string into it.

Parameters:
  `sz` - Null-terminated UNICODE string to copy.
Returns:
  Null if there is insufficient memory or if a null pointer is passed in.

### SysFreeString

void SysFreeString(WTypes.BSTR bstr)
This function frees a string allocated previously by SysAllocString, SysAllocStringByteLen, SysReAllocString, SysAllocStringLen, or SysReAllocStringLen.

Parameters:
  `bstr` - Unicode string that was allocated previously, or NULL. Setting this parameter to NULL causes the function to simply return.

### SysStringByteLen

int SysStringByteLen(WTypes.BSTR bstr)
Returns the length (in bytes) of a BSTR.

Parameters:
  `bstr` - Unicode string that was allocated previously.

### SysStringLen

int SysStringLen(WTypes.BSTR bstr)
Returns the length of a BSTR.

Parameters:
  `bstr` - Unicode string that was allocated previously.

### VariantInit

void VariantInit(Variant.VARIANT.ByReference pvarg)
The VariantInit function initializes the VARIANTARG by setting the vt field to VT_EMPTY. Unlike VariantClear, this function does not interpret the current contents of the VARIANTARG. Use VariantInit to initialize new local variables of type VARIANTARG (or VARIANT).

Parameters:
  `pvarg` - The variant to initialize.

### VariantInit

void VariantInit(Variant.VARIANT pvarg)
The VariantInit function initializes the VARIANTARG by setting the vt field to VT_EMPTY. Unlike VariantClear, this function does not interpret the current contents of the VARIANTARG. Use VariantInit to initialize new local variables of type VARIANTARG (or VARIANT).

Parameters:
  `pvarg` - The variant to initialize.

### VariantCopy

WinNT.HRESULT VariantCopy(Pointer pvargDest, Variant.VARIANT pvargSrc)
First, free any memory that is owned by pvargDest, such as VariantClear (pvargDest must point to a valid initialized variant, and not simply to an uninitialized memory location). Then pvargDest receives an exact copy of the contents of pvargSrc.

If pvargSrc is a VT_BSTR, a copy of the string is made. If pvargSrcis a VT_ARRAY, the entire array is copied. If pvargSrc is a VT_DISPATCH or VT_UNKNOWN, AddRef is called to increment the object's reference count.

If the variant to be copied is a COM object that is passed by reference, the vtfield of the pvargSrcparameter is VT_DISPATCH | VT_BYREF or VT_UNKNOWN | VT_BYREF. In this case, VariantCopy does not increment the reference count on the referenced object. Because the variant being copied is a pointer to a reference to an object, VariantCopy has no way to determine if it is necessary to increment the reference count of the object. It is therefore the responsibility of the caller to call IUnknown::AddRef on the object or not, as appropriate.

Note The VariantCopy method is not threadsafe.

Parameters:
  `pvargDest` - [out] The destination variant.
  `pvargSrc` - [in] The source variant.
Returns:
  the hresult

### VariantClear

WinNT.HRESULT VariantClear(Variant.VARIANT pvarg)
Use this function to clear variables of type VARIANTARG (or VARIANT) before the memory containing the VARIANTARG is freed (as when a local variable goes out of scope).

The function clears a VARIANTARG by setting the vt field to VT_EMPTY. The current contents of the VARIANTARG are released first. If the vtfield is VT_BSTR, the string is freed. If the vtfield is VT_DISPATCH, the object is released. If the vt field has the VT_ARRAY bit set, the array is freed.

If the variant to be cleared is a COM object that is passed by reference, the vtfield of the pvargparameter is VT_DISPATCH | VT_BYREF or VT_UNKNOWN | VT_BYREF. In this case, VariantClear does not release the object. Because the variant being cleared is a pointer to a reference to an object, VariantClear has no way to determine if it is necessary to release the object. It is therefore the responsibility of the caller to release the object or not, as appropriate.

In certain cases, it may be preferable to clear a variant in code without calling VariantClear. For example, you can change the type of a VT_I4 variant to another type without calling this function. Safearrays of BSTR will have SysFreeString called on each element not VariantClear. However, you must call VariantClear if a VT_type is received but cannot be handled. Safearrays of variant will also have VariantClear called on each member. Using VariantClear in these cases ensures that code will continue to work if Automation adds new variant types in the future.

Do not use VariantClear on unitialized variants; use VariantInit to initialize a new VARIANTARG or VARIANT.

Variants containing arrays with outstanding references cannot be cleared. Attempts to do so will return an HRESULT containing DISP_E_ARRAYISLOCKED.

Parameters:
  `pvarg` - [in, out] The variant to clear.
Returns:
  the hresult

### VariantChangeType

WinNT.HRESULT VariantChangeType(Variant.VARIANT pvargDest, Variant.VARIANT pvarSrc, short wFlags, WTypes.VARTYPE vt)
Converts a variant from one type to another.

Parameters:
  `pvargDest` - [out] The destination variant. If this is the same as pvarSrc, the variant will be converted in place.
  `pvarSrc` - [in] The variant to convert.
  `wFlags` - Combination of the following flags

  wFlags | Value | Meaning
  --- | --- | ---
  | `VARIANT_NOVALUEPROP` | Prevents the function from attempting to coerce an object to a fundamental type by getting the Value property. Applications should set this flag only if necessary, because it makes their behavior inconsistent with other applications.
  | `VARIANT_ALPHABOOL` | Converts a `VT_BOOL` value to a string containing either "True" or "False".
  | `VARIANT_NOUSEROVERRIDE` | For conversions to or from `VT_BSTR`, passes LOCALE_NOUSEROVERRIDE to the core coercion routines.
  | `VARIANT_LOCALBOOL` | For conversions from `VT_BOOL` to `VT_BSTR` and back, uses the language specified by the locale in use on the local computer.

  `vt` - The type to convert to. If the return code is `S_OK`, the vt field of the vargDest is guaranteed to be equal to this value.
Returns:
  This function can return one of these values:

  Return code | Description
  --- | ---
  `S_OK` | Success.
  `DISP_E_BADVARTYPE` | The variant type is not a valid type of variant.
  `DISP_E_OVERFLOW` | The data pointed to by pvarSrc does not fit in the destination type.
  `DISP_E_TYPEMISMATCH` | The argument could not be coerced to the specified type.
  `E_INVALIDARG` | One of the arguments is not valid.
  `E_OUTOFMEMORY` | Insufficient memory to complete the operation.

  Remarks The VariantChangeType function handles coercions between the fundamental types (including numeric-to-string and string-to-numeric coercions). The pvarSrc argument is changed during the conversion process. For example, if the source variant is of type `VT_BOOL` and the destination is of type `VT_UINT`, the pvarSrc argument is first converted to `VT_I2` and then the conversion proceeds. A variant that has `VT_BYREF` set is coerced to a value by obtaining the referenced value. An object is coerced to a value by invoking the object's Value property (`DISPID_VALUE`). Typically, the implementor of `IDispatch.Invoke` determines which member is being accessed, and then calls VariantChangeType to get the value of one or more arguments. For example, if the IDispatch call specifies a SetTitle member that takes one string argument, the implementor would call VariantChangeType to attempt to coerce the argument to `VT_BSTR`. If VariantChangeType does not return an error, the argument could then be obtained directly from the `bstrVal` field of the `VARIANT`. If VariantChangeType returns `DISP_E_TYPEMISMATCH`, the implementor would set `Invoke` `puArgErr` parameter referenced value to 0 (indicating the argument in error) and return DISP_E_TYPEMISMATCH from Invoke. Arrays of one type cannot be converted to arrays of another type with this function. Note The type of a `VARIANT` should not be changed in the `rgvarg` array in place.

### VariantChangeType

WinNT.HRESULT VariantChangeType(Variant.VARIANT.ByReference pvargDest, Variant.VARIANT.ByReference pvarSrc, short wFlags, WTypes.VARTYPE vt)
Converts a variant from one type to another.

Parameters:
  `pvargDest` - [out] The destination variant. If this is the same as pvarSrc, the variant will be converted in place.
  `pvarSrc` - [in] The variant to convert.
  `wFlags` - Combination of the following flags

  wFlags | Value | Meaning
  --- | --- | ---
  | `VARIANT_NOVALUEPROP` | Prevents the function from attempting to coerce an object to a fundamental type by getting the Value property. Applications should set this flag only if necessary, because it makes their behavior inconsistent with other applications.
  | `VARIANT_ALPHABOOL` | Converts a `VT_BOOL` value to a string containing either "True" or "False".
  | `VARIANT_NOUSEROVERRIDE` | For conversions to or from `VT_BSTR`, passes LOCALE_NOUSEROVERRIDE to the core coercion routines.
  | `VARIANT_LOCALBOOL` | For conversions from `VT_BOOL` to `VT_BSTR` and back, uses the language specified by the locale in use on the local computer.

  `vt` - The type to convert to. If the return code is `S_OK`, the vt field of the vargDest is guaranteed to be equal to this value.
Returns:
  This function can return one of these values:

  Return code | Description
  --- | ---
  `S_OK` | Success.
  `DISP_E_BADVARTYPE` | The variant type is not a valid type of variant.
  `DISP_E_OVERFLOW` | The data pointed to by pvarSrc does not fit in the destination type.
  `DISP_E_TYPEMISMATCH` | The argument could not be coerced to the specified type.
  `E_INVALIDARG` | One of the arguments is not valid.
  `E_OUTOFMEMORY` | Insufficient memory to complete the operation.

  Remarks The VariantChangeType function handles coercions between the fundamental types (including numeric-to-string and string-to-numeric coercions). The pvarSrc argument is changed during the conversion process. For example, if the source variant is of type `VT_BOOL` and the destination is of type `VT_UINT`, the pvarSrc argument is first converted to `VT_I2` and then the conversion proceeds. A variant that has `VT_BYREF` set is coerced to a value by obtaining the referenced value. An object is coerced to a value by invoking the object's Value property (`DISPID_VALUE`). Typically, the implementor of `IDispatch.Invoke` determines which member is being accessed, and then calls VariantChangeType to get the value of one or more arguments. For example, if the IDispatch call specifies a SetTitle member that takes one string argument, the implementor would call VariantChangeType to attempt to coerce the argument to `VT_BSTR`. If VariantChangeType does not return an error, the argument could then be obtained directly from the `bstrVal` field of the `VARIANT`. If VariantChangeType returns `DISP_E_TYPEMISMATCH`, the implementor would set `Invoke` `puArgErr` parameter referenced value to 0 (indicating the argument in error) and return DISP_E_TYPEMISMATCH from Invoke. Arrays of one type cannot be converted to arrays of another type with this function. Note The type of a `VARIANT` should not be changed in the `rgvarg` array in place.

### SafeArrayCreate

OaIdl.SAFEARRAY.ByReference SafeArrayCreate(WTypes.VARTYPE vt, WinDef.UINT cDims, OaIdl.SAFEARRAYBOUND[] rgsabound)
Creates a new array descriptor, allocates and initializes the data for the array, and returns a pointer to the new array descriptor.

Parameters:
  `vt` - [in] The base type of the array (the VARTYPE of each element of the array). The VARTYPE is restricted to a subset of the variant types. Neither the VT_ARRAY nor the VT_BYREF flag can be set. VT_EMPTY and VT_NULL are not valid base types for the array. All other types are legal. cDims
  `cDims` - the number of dims
  `rgsabound` - the rgsabound
Returns:
  Return value A safe array descriptor, or null if the array could not be created.

### SafeArrayPutElement

WinNT.HRESULT SafeArrayPutElement(OaIdl.SAFEARRAY psa, WinDef.LONG[] idx, Pointer pv)
Stores the data element at the specified location in the array.

Parameters:
  `psa` - [in] An array descriptor created by SafeArrayCreate.
  `idx` - the idx
  `pv` - [in] The data to assign to the array. The variant types VT_DISPATCH, VT_UNKNOWN, and VT_BSTR are pointers, and do not require another level of indirection.
Returns:
  Return value This function can return one of these values.
  S_OK
    Success.
  DISP_E_BADINDEX
    The specified index is not valid.
  E_INVALIDARG
    One of the arguments is not valid.
  E_OUTOFMEMORY
    Memory could not be allocated for the element.

### SafeArrayGetUBound

WinNT.HRESULT SafeArrayGetUBound(OaIdl.SAFEARRAY psa, WinDef.UINT nDim, WinDef.LONGByReference bound)
Retrieve the upper bound for the specified dimension of the supplied array

Parameters:
  `psa` - [in] An array descriptor created by SafeArrayCreate.
  `nDim` - [in] the dimension, one based
  `bound` - [out] upper bound for the supplied dimension
Returns:
  Return value This function can return one of these values.
  S_OK
    Success.
  DISP_E_BADINDEX
    The specified index is not valid.
  E_INVALIDARG
    One of the arguments is not valid.

### SafeArrayGetLBound

WinNT.HRESULT SafeArrayGetLBound(OaIdl.SAFEARRAY psa, WinDef.UINT nDim, WinDef.LONGByReference bound)
Retrieve the lower bound for the specified dimension of the supplied array

Parameters:
  `psa` - [in] An array descriptor created by SafeArrayCreate.
  `nDim` - [in] the dimension, one based
  `bound` - [out] lower bound for the supplied dimension
Returns:
  Return value This function can return one of these values.
  S_OK
    Success.
  DISP_E_BADINDEX
    The specified index is not valid.
  E_INVALIDARG
    One of the arguments is not valid.

### SafeArrayGetElement

WinNT.HRESULT SafeArrayGetElement(OaIdl.SAFEARRAY psa, WinDef.LONG[] rgIndices, Pointer pv)
Retrieves a single element of the array.

The array is automaticly locked via SafeArrayLock and SafeArrayUnlock.

Parameters:
  `psa` - [in] An array descriptor created by SafeArrayCreate.
  `rgIndices` - [in] A vector of indexes for each dimension of the array. The right-most (least significant) dimension is rgIndices[0]. The left-most dimension is stored at rgIndices[psa->cDims - 1].
  `pv` - [out] The element of the array.
Returns:
  Return value This function can return one of these values.
  S_OK
    Success.
  DISP_E_BADINDEX
    The specified index is not valid.
  E_INVALIDARG
    One of the arguments is not valid.
  E_OUTOFMEMORY
    Memory could not be allocated for the element.

### SafeArrayPtrOfIndex

WinNT.HRESULT SafeArrayPtrOfIndex(OaIdl.SAFEARRAY psa, WinDef.LONG[] rgIndices, PointerByReference ppv)
Retrieves the pointer to a single element of the array.

The caller is responsible for locking.

Parameters:
  `psa` - [in] An array descriptor created by SafeArrayCreate.
  `rgIndices` - [in] A vector of indexes for each dimension of the array. The right-most (least significant) dimension is rgIndices[0]. The left-most dimension is stored at rgIndices[psa->cDims - 1].
  `ppv` - [out] The element of the array.
Returns:
  Return value This function can return one of these values.
  S_OK
    Success.
  DISP_E_BADINDEX
    The specified index is not valid.
  E_INVALIDARG
    One of the arguments is not valid.

### SafeArrayLock

WinNT.HRESULT SafeArrayLock(OaIdl.SAFEARRAY psa)
Increments the lock count of an array, and places a pointer to the array data in pvData of the array descriptor.

Parameters:
  `psa` - [in] An array descriptor created by SafeArrayCreate.
Returns:
  Return value This function can return one of these values.
  S_OK
    Success.
  E_INVALIDARG
    The argument psa is not valid.
  E_UNEXPECTED
    The array could not be locked.

### SafeArrayUnlock

WinNT.HRESULT SafeArrayUnlock(OaIdl.SAFEARRAY psa)
Decrements the lock count of an array so it can be freed or resized.

Parameters:
  `psa` - [in] An array descriptor created by SafeArrayCreate.
Returns:
  Return value This function can return one of these values.
  S_OK
    Success.
  E_INVALIDARG
    The argument psa is not valid.
  E_UNEXPECTED
    The array could not be locked.

### SafeArrayDestroy

WinNT.HRESULT SafeArrayDestroy(OaIdl.SAFEARRAY psa)
Destroys an existing array descriptor and all of the data in the array. If objects are stored in the array, Release is called on each object in the array.

Parameters:
  `psa` - [in] An array descriptor created by SafeArrayCreate.
Returns:
  Return value This function can return one of these values.
  S_OK
    Success.
  E_INVALIDARG
    The argument psa is not valid.
  DISP_E_ARRAYISLOCKED
    The array could not be locked.

### SafeArrayRedim

WinNT.HRESULT SafeArrayRedim(OaIdl.SAFEARRAY psa, OaIdl.SAFEARRAYBOUND psaboundNew)
Changes the right-most (least significant) bound of the specified safe array.

Parameters:
  `psa` - [in, out] An array descriptor created by SafeArrayCreate.
  `psaboundNew` - [in] New bounds for the least significant dimension
Returns:
  Return value This function can return one of these values.
  S_OK
    Success.
  E_INVALIDARG
    The argument psa is not valid.
  DISP_E_ARRAYISLOCKED
    The array could not be locked.

### SafeArrayGetVartype

WinNT.HRESULT SafeArrayGetVartype(OaIdl.SAFEARRAY psa, WTypes.VARTYPEByReference pvt)
Return VARTYPE of the SAFEARRAY

Parameters:
  `psa` - [in] An array descriptor created by SafeArrayCreate.
  `pvt` - [in] Vartype of the SAFEARRAY
Returns:
  Return value This function can return one of these values.
  S_OK
    Success.
  E_INVALIDARG
    The argument psa is not valid.

### SafeArrayGetDim

WinDef.UINT SafeArrayGetDim(OaIdl.SAFEARRAY psa)
Return number of dimensions of the SAFEARRAY

Parameters:
  `psa` - [in] An array descriptor created by SafeArrayCreate.
Returns:
  Return count of dimensions

### SafeArrayAccessData

WinNT.HRESULT SafeArrayAccessData(OaIdl.SAFEARRAY psa, PointerByReference ppvData)
Lock array and retrieve pointer to data

Parameters:
  `psa` - [in] An array descriptor created by SafeArrayCreate.
  `ppvData` - [in] pointer to the data array
Returns:
  Return value This function can return one of these values.
  S_OK
    Success.
  E_INVALIDARG
    The argument psa is not valid.
  E_UNEXPECTED
    The array could not be locked.

### SafeArrayUnaccessData

WinNT.HRESULT SafeArrayUnaccessData(OaIdl.SAFEARRAY psa)
Unlock array and invalidate the pointer retrieved via SafeArrayAccessData

Parameters:
  `psa` - [in] An array descriptor created by SafeArrayCreate.
Returns:
  Return value This function can return one of these values.
  S_OK
    Success.
  E_INVALIDARG
    The argument psa is not valid.
  E_UNEXPECTED
    The array could not be locked.

### SafeArrayGetElemsize

WinDef.UINT SafeArrayGetElemsize(OaIdl.SAFEARRAY psa)
Get size of one element in bytes

Parameters:
  `psa` - [in] An array descriptor created by SafeArrayCreate.
Returns:
  size in bytes

### GetActiveObject

WinNT.HRESULT GetActiveObject(Guid.GUID rclsid, WinDef.PVOID pvReserved, PointerByReference ppunk)
Retrieves a pointer to a running object that has been registered with OLE.

Parameters:
  `rclsid` - [in] The class identifier (CLSID) of the active object from the OLE registration database.
  `pvReserved` - Reserved for future use. Must be null.
  `ppunk` - [out] The requested active object.
Returns:
  Return value If this function succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code.

### LoadRegTypeLib

WinNT.HRESULT LoadRegTypeLib(Guid.GUID rguid, int wVerMajor, int wVerMinor, WinDef.LCID lcid, PointerByReference pptlib)
Uses registry information to load a type library.

Parameters:
  `rguid` - The GUID of the library.
  `wVerMajor` - The major version of the library.
  `wVerMinor` - The minor version of the library.
  `lcid` - The national language code of the library.
  `pptlib` - The loaded type library. This function can return one of these values: S_OK Success. E_INVALIDARG One or more of the arguments is not valid. E_OUTOFMEMORY Insufficient memory to complete the operation. TYPE_E_IOERROR The function could not write to the file. TYPE_E_INVALIDSTATE The type library could not be opened. TYPE_E_INVDATAREAD The function could not read from the file. TYPE_E_UNSUPFORMAT The type library has an older format. TYPE_E_UNKNOWNLCID The LCID could not be found in the OLE-supported DLLs. TYPE_E_CANTLOADLIBRARY The type library or DLL could not be loaded.
Returns:
  status

### LoadTypeLib

WinNT.HRESULT LoadTypeLib(String szFile, PointerByReference pptlib)
Loads and registers a type library.

Parameters:
  `szFile` - The name of the file from which the method should attempt to load a type library.
  `pptlib` - The loaded type library. Return value This function can return one of these values. S_OK Success. E_INVALIDARG One or more of the arguments is not valid. E_OUTOFMEMORY Insufficient memory to complete the operation. TYPE_E_IOERROR The function could not write to the file. TYPE_E_INVALIDSTATE The type library could not be opened. TYPE_E_INVDATAREAD The function could not read from the file. TYPE_E_UNSUPFORMAT The type library has an older format. TYPE_E_UNKNOWNLCID The LCID could not be found in the OLE-supported DLLs. TYPE_E_CANTLOADLIBRARY The type library or DLL could not be loaded.
Returns:
  status

### SystemTimeToVariantTime

int SystemTimeToVariantTime(WinBase.SYSTEMTIME lpSystemTime, DoubleByReference pvtime)
Converts a system time to a variant representation.

Parameters:
  `lpSystemTime` - [in] The system time.
  `pvtime` - [out] The variant time.
Returns:
  The function returns TRUE on success and FALSE otherwise.

### VariantTimeToSystemTime

int VariantTimeToSystemTime(double vtime, WinBase.SYSTEMTIME lpSystemTime)
Converts a variant representation of time to a system time.

Parameters:
  `vtime` - [in] The variant time.
  `lpSystemTime` - [out] The system time.
Returns:
  The function returns TRUE on success and FALSE otherwise.