Official Go implementation of the Ethereum protocol
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go-ethereum/vendor/github.com/go-ole/go-ole/iunknown_windows.go

58 lines
1.0 KiB

// +build windows
package ole
import (
"reflect"
"syscall"
"unsafe"
)
func reflectQueryInterface(self interface{}, method uintptr, interfaceID *GUID, obj interface{}) (err error) {
selfValue := reflect.ValueOf(self).Elem()
objValue := reflect.ValueOf(obj).Elem()
hr, _, _ := syscall.Syscall(
method,
3,
selfValue.UnsafeAddr(),
uintptr(unsafe.Pointer(interfaceID)),
objValue.Addr().Pointer())
if hr != 0 {
err = NewError(hr)
}
return
}
func queryInterface(unk *IUnknown, iid *GUID) (disp *IDispatch, err error) {
hr, _, _ := syscall.Syscall(
unk.VTable().QueryInterface,
3,
uintptr(unsafe.Pointer(unk)),
uintptr(unsafe.Pointer(iid)),
uintptr(unsafe.Pointer(&disp)))
if hr != 0 {
err = NewError(hr)
}
return
}
func addRef(unk *IUnknown) int32 {
ret, _, _ := syscall.Syscall(
unk.VTable().AddRef,
1,
uintptr(unsafe.Pointer(unk)),
0,
0)
return int32(ret)
}
func release(unk *IUnknown) int32 {
ret, _, _ := syscall.Syscall(
unk.VTable().Release,
1,
uintptr(unsafe.Pointer(unk)),
0,
0)
return int32(ret)
}