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package ole
// Connection contains IUnknown for fluent interface interaction.
//
// Deprecated. Use oleutil package instead.
type Connection struct {
Object *IUnknown // Access COM
}
// Initialize COM.
func (*Connection) Initialize() (err error) {
return coInitialize()
}
// Uninitialize COM.
func (*Connection) Uninitialize() {
CoUninitialize()
}
// Create IUnknown object based first on ProgId and then from String.
func (c *Connection) Create(progId string) (err error) {
var clsid *GUID
clsid, err = CLSIDFromProgID(progId)
if err != nil {
clsid, err = CLSIDFromString(progId)
if err != nil {
return
}
}
unknown, err := CreateInstance(clsid, IID_IUnknown)
if err != nil {
return
}
c.Object = unknown
return
}
// Release IUnknown object.
func (c *Connection) Release() {
c.Object.Release()
}
// Load COM object from list of programIDs or strings.
func (c *Connection) Load(names ...string) (errors []error) {
var tempErrors []error = make([]error, len(names))
var numErrors int = 0
for _, name := range names {
err := c.Create(name)
if err != nil {
tempErrors = append(tempErrors, err)
numErrors += 1
continue
}
break
}
copy(errors, tempErrors[0:numErrors])
return
}
// Dispatch returns Dispatch object.
func (c *Connection) Dispatch() (object *Dispatch, err error) {
dispatch, err := c.Object.QueryInterface(IID_IDispatch)
if err != nil {
return
}
object = &Dispatch{dispatch}
return
}
// Dispatch stores IDispatch object.
type Dispatch struct {
Object *IDispatch // Dispatch object.
}
// Call method on IDispatch with parameters.
func (d *Dispatch) Call(method string, params ...interface{}) (result *VARIANT, err error) {
id, err := d.GetId(method)
if err != nil {
return
}
result, err = d.Invoke(id, DISPATCH_METHOD, params)
return
}
// MustCall method on IDispatch with parameters.
func (d *Dispatch) MustCall(method string, params ...interface{}) (result *VARIANT) {
id, err := d.GetId(method)
if err != nil {
panic(err)
}
result, err = d.Invoke(id, DISPATCH_METHOD, params)
if err != nil {
panic(err)
}
return
}
// Get property on IDispatch with parameters.
func (d *Dispatch) Get(name string, params ...interface{}) (result *VARIANT, err error) {
id, err := d.GetId(name)
if err != nil {
return
}
result, err = d.Invoke(id, DISPATCH_PROPERTYGET, params)
return
}
// MustGet property on IDispatch with parameters.
func (d *Dispatch) MustGet(name string, params ...interface{}) (result *VARIANT) {
id, err := d.GetId(name)
if err != nil {
panic(err)
}
result, err = d.Invoke(id, DISPATCH_PROPERTYGET, params)
if err != nil {
panic(err)
}
return
}
// Set property on IDispatch with parameters.
func (d *Dispatch) Set(name string, params ...interface{}) (result *VARIANT, err error) {
id, err := d.GetId(name)
if err != nil {
return
}
result, err = d.Invoke(id, DISPATCH_PROPERTYPUT, params)
return
}
// MustSet property on IDispatch with parameters.
func (d *Dispatch) MustSet(name string, params ...interface{}) (result *VARIANT) {
id, err := d.GetId(name)
if err != nil {
panic(err)
}
result, err = d.Invoke(id, DISPATCH_PROPERTYPUT, params)
if err != nil {
panic(err)
}
return
}
// GetId retrieves ID of name on IDispatch.
func (d *Dispatch) GetId(name string) (id int32, err error) {
var dispid []int32
dispid, err = d.Object.GetIDsOfName([]string{name})
if err != nil {
return
}
id = dispid[0]
return
}
// GetIds retrieves all IDs of names on IDispatch.
func (d *Dispatch) GetIds(names ...string) (dispid []int32, err error) {
dispid, err = d.Object.GetIDsOfName(names)
return
}
// Invoke IDispatch on DisplayID of dispatch type with parameters.
//
// There have been problems where if send cascading params..., it would error
// out because the parameters would be empty.
func (d *Dispatch) Invoke(id int32, dispatch int16, params []interface{}) (result *VARIANT, err error) {
if len(params) < 1 {
result, err = d.Object.Invoke(id, dispatch)
} else {
result, err = d.Object.Invoke(id, dispatch, params...)
}
return
}
// Release IDispatch object.
func (d *Dispatch) Release() {
d.Object.Release()
}
// Connect initializes COM and attempts to load IUnknown based on given names.
func Connect(names ...string) (connection *Connection) {
connection.Initialize()
connection.Load(names...)
return
}
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