diff --git a/robotgo.go b/robotgo.go
index 048a32f..3e07475 100644
--- a/robotgo.go
+++ b/robotgo.go
@@ -820,6 +820,19 @@ func TostringBitmap(bit C.MMBitmapRef) *C.char {
 	return strBit
 }
 
+// ToBitmap trans C.MMBitmapRef to Bitmap
+func ToBitmap(bit C.MMBitmapRef) Bitmap {
+	bitmap := Bitmap{
+		ImageBuffer:   (*uint8)(bit.imageBuffer),
+		Width:         int(bit.width),
+		Height:        int(bit.height),
+		Bytewidth:     int(bit.bytewidth),
+		BitsPerPixel:  uint8(bit.bitsPerPixel),
+		BytesPerPixel: uint8(bit.bytesPerPixel),
+	}
+	return bitmap
+}
+
 // GetPortion get portion
 func GetPortion(bit C.MMBitmapRef, x, y, w, h C.size_t) C.MMBitmapRef {
 	var rect C.MMRect
diff --git a/test/main.go b/test/main.go
index 9fdce95..4b999af 100644
--- a/test/main.go
+++ b/test/main.go
@@ -12,6 +12,7 @@ package main
 
 import (
 	"fmt"
+	"reflect"
 
 	"github.com/go-vgo/robotgo"
 )
@@ -58,6 +59,11 @@ func aRobotgo() {
 
 	robotgo.SaveBitmap(bitmap, "test.png", 1)
 
+	var bitmapTest robotgo.Bitmap
+	bitTest := robotgo.OpenBitmap("test.png")
+	bitmapTest = robotgo.ToBitmap(bitTest)
+	fmt.Println("...type", reflect.TypeOf(bitTest), reflect.TypeOf(bitmapTest))
+
 	// robotgo.MouseClick()
 	robotgo.ScrollMouse(10, "up")
 }