Merge pull request #45 from mholt/master

Implement CallMethod for calling WMI class methods

wmi.go

diff --git a/wmi.go b/wmi.go
index 528d0cf..107529d 100644
--- a/wmi.go
+++ b/wmi.go
@@ -364,7 +364,7 @@
 		}
 		defer prop.Clear()
 
-		if prop.Value() == nil {
+		if prop.VT == 0x1 { //VT_NULL
 			continue
 		}
 
@@ -466,7 +466,7 @@
 						}
 						f.Set(fArr)
 					}
-				case reflect.Uint8:
+				case reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uint:
 					safeArray := prop.ToArray()
 					if safeArray != nil {
 						arr := safeArray.ToValueArray()
@@ -477,6 +477,17 @@
 						}
 						f.Set(fArr)
 					}
+				case reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Int:
+					safeArray := prop.ToArray()
+					if safeArray != nil {
+						arr := safeArray.ToValueArray()
+						fArr := reflect.MakeSlice(f.Type(), len(arr), len(arr))
+						for i, v := range arr {
+							s := fArr.Index(i)
+							s.SetInt(reflect.ValueOf(v).Int())
+						}
+						f.Set(fArr)
+					}
 				default:
 					return &ErrFieldMismatch{
 						StructType: of.Type(),