func Invoke(this *ole.IDispatch, dispid int, riid *ole.GUID, lcid int, flags int16, dispparams *ole.DISPPARAMS, result *ole.VARIANT, pexcepinfo *ole.EXCEPINFO, nerr *uint) uintptr {
switch dispid {
case 0:
log.Println("DataArrival")
winsock := (*EventReceiver)(unsafe.Pointer(this)).host
var data ole.VARIANT
ole.VariantInit(&data)
oleutil.CallMethod(winsock, "GetData", &data)
s := string(data.ToArray().ToByteArray())
println()
println(s)
println()
case 1:
log.Println("Connected")
winsock := (*EventReceiver)(unsafe.Pointer(this)).host
oleutil.CallMethod(winsock, "SendData", "GET / HTTP/1.0\r\n\r\n")
case 3:
log.Println("SendProgress")
case 4:
log.Println("SendComplete")
case 5:
log.Println("Close")
this.Release()
case 6:
log.Fatal("Error")
default:
log.Println(dispid)
}
return ole.E_NOTIMPL
}
func showMethodsAndProperties(i *ole.IDispatch) {
n, err := i.GetTypeInfoCount()
if err != nil {
log.Fatalln(err)
}
tinfo, err := i.GetTypeInfo()
if err != nil {
log.Fatalln(err)
}
fmt.Println("n=", n, "tinfo=", tinfo)
}
// ConnectObject creates a connection point between two services for communication.
func ConnectObject(disp *ole.IDispatch, iid *ole.GUID, idisp interface{}) (cookie uint32, err error) {
unknown, err := disp.QueryInterface(ole.IID_IConnectionPointContainer)
if err != nil {
return
}
container := (*ole.IConnectionPointContainer)(unsafe.Pointer(unknown))
var point *ole.IConnectionPoint
err = container.FindConnectionPoint(iid, &point)
if err != nil {
return
}
if edisp, ok := idisp.(*ole.IUnknown); ok {
cookie, err = point.Advise(edisp)
container.Release()
if err != nil {
return
}
}
rv := reflect.ValueOf(disp).Elem()
if rv.Type().Kind() == reflect.Struct {
dest := &stdDispatch{}
dest.lpVtbl = &stdDispatchVtbl{}
dest.lpVtbl.pQueryInterface = syscall.NewCallback(dispQueryInterface)
dest.lpVtbl.pAddRef = syscall.NewCallback(dispAddRef)
dest.lpVtbl.pRelease = syscall.NewCallback(dispRelease)
dest.lpVtbl.pGetTypeInfoCount = syscall.NewCallback(dispGetTypeInfoCount)
dest.lpVtbl.pGetTypeInfo = syscall.NewCallback(dispGetTypeInfo)
dest.lpVtbl.pGetIDsOfNames = syscall.NewCallback(dispGetIDsOfNames)
dest.lpVtbl.pInvoke = syscall.NewCallback(dispInvoke)
dest.iface = disp
dest.iid = iid
cookie, err = point.Advise((*ole.IUnknown)(unsafe.Pointer(dest)))
container.Release()
if err != nil {
point.Release()
return
}
}
container.Release()
return 0, ole.NewError(ole.E_INVALIDARG)
}
// GetProperty retrieves property from IDispatch.
func GetProperty(disp *ole.IDispatch, name string, params ...interface{}) (result *ole.VARIANT, err error) {
var dispid []int32
dispid, err = disp.GetIDsOfName([]string{name})
if err != nil {
return
}
if len(params) < 1 {
result, err = disp.Invoke(dispid[0], ole.DISPATCH_PROPERTYGET)
} else {
result, err = disp.Invoke(dispid[0], ole.DISPATCH_PROPERTYGET, params...)
}
return
}
// CallMethod calls method on IDispatch with parameters.
func CallMethod(disp *ole.IDispatch, name string, params ...interface{}) (result *ole.VARIANT, err error) {
var dispid []int32
dispid, err = disp.GetIDsOfName([]string{name})
if err != nil {
return
}
if len(params) < 1 {
result, err = disp.Invoke(dispid[0], ole.DISPATCH_METHOD)
} else {
result, err = disp.Invoke(dispid[0], ole.DISPATCH_METHOD, params...)
}
return
}