Update

vendor/github.com/dblohm7/wingoes/com/automation/types.go

@@ -50,8 +50,8 @@ func (bs *BSTR) String() string {
 	return windows.UTF16ToString(bs.toUTF16())
 }
 
-// toUTF16 is unsafe for general use because it returns a pointer that is
-// not managed by the Go GC.
+// toUTF16 is unsafe for general use because it returns a slice referencing a
+// pointer that is not managed by the Go GC.
 func (bs *BSTR) toUTF16() []uint16 {
 	return unsafe.Slice(bs.toUTF16Ptr(), bs.Len())
 }
@@ -67,7 +67,7 @@ func (bs *BSTR) toUTF16Ptr() *uint16 {
 	return (*uint16)(unsafe.Pointer(*bs))
 }
 
-// ToUTF16 returns the contents of bs as C-style string pointer to UTF-16 code units.
+// ToUTF16Ptr returns the contents of bs as C-style string pointer to UTF-16 code units.
 func (bs *BSTR) ToUTF16Ptr() *uint16 {
 	return unsafe.SliceData(bs.ToUTF16())
 }

vendor/github.com/dblohm7/wingoes/com/automation/zsyscall_windows.go

@@ -47,24 +47,24 @@ var (
 )
 
 func sysAllocString(str *uint16) (ret BSTR) {
-	r0, _, _ := syscall.Syscall(procSysAllocString.Addr(), 1, uintptr(unsafe.Pointer(str)), 0, 0)
+	r0, _, _ := syscall.SyscallN(procSysAllocString.Addr(), uintptr(unsafe.Pointer(str)))
 	ret = BSTR(r0)
 	return
 }
 
 func sysAllocStringLen(str *uint16, strLen uint32) (ret BSTR) {
-	r0, _, _ := syscall.Syscall(procSysAllocStringLen.Addr(), 2, uintptr(unsafe.Pointer(str)), uintptr(strLen), 0)
+	r0, _, _ := syscall.SyscallN(procSysAllocStringLen.Addr(), uintptr(unsafe.Pointer(str)), uintptr(strLen))
 	ret = BSTR(r0)
 	return
 }
 
 func sysFreeString(bstr BSTR) {
-	syscall.Syscall(procSysFreeString.Addr(), 1, uintptr(bstr), 0, 0)
+	syscall.SyscallN(procSysFreeString.Addr(), uintptr(bstr))
 	return
 }
 
 func sysStringLen(bstr BSTR) (ret uint32) {
-	r0, _, _ := syscall.Syscall(procSysStringLen.Addr(), 1, uintptr(bstr), 0, 0)
+	r0, _, _ := syscall.SyscallN(procSysStringLen.Addr(), uintptr(bstr))
 	ret = uint32(r0)
 	return
 }