optimize get title code, Fixed #165 and typo

robotgo.go

@@ -1498,25 +1498,26 @@ func GetBHandle() int {
 	return ghwnd
 }
 
+func cgetTitle(hwnd, isHwnd int32) string {
+	title := C.get_title(C.uintptr(hwnd), C.uintptr(isHwnd))
+	gtitle := C.GoString(title)
+
+	return gtitle
+}
+
 // GetTitle get the window title
 func GetTitle(args ...int32) string {
 	if len(args) <= 0 {
 		title := C.get_main_title()
-		gtittle := C.GoString(title)
-		return gtittle
+		gtitle := C.GoString(title)
+		return gtitle
 	}
 
-	var hwnd, isHwnd int32
-	if len(args) > 0 {
-		hwnd = args[0]
-	}
 	if len(args) > 1 {
-		isHwnd = args[1]
+		return internalGetTitle(args[0], args[1])
 	}
-	title := C.get_title(C.uintptr(hwnd), C.uintptr(isHwnd))
-	gtittle := C.GoString(title)
 
-	return gtittle
+	return internalGetTitle(args[0])
 }
 
 // GetPID get the process id

robotgo_mac_win.go

@@ -22,6 +22,17 @@ func GetBounds(pid int32, args ...int) (int, int, int, int) {
 	return internalGetBounds(pid, hwnd)
 }
 
+// internalGetTitle get the window title
+func internalGetTitle(pid int32, args ...int32) string {
+	var isHwnd int32
+	if len(args) > 0 {
+		isHwnd = args[0]
+	}
+	gtitle := cgetTitle(pid, isHwnd)
+
+	return gtitle
+}
+
 // ActivePID active the window by PID,
 //
 // If args[0] > 0 on the Windows platform via a window handle to active

robotgo_unix.go

@@ -41,6 +41,24 @@ func GetBounds(pid int32, args ...int) (int, int, int, int) {
 	return internalGetBounds(int32(xid), hwnd)
 }
 
+// internalGetTitle get the window title
+func internalGetTitle(pid int32, args ...int) string {
+	var hwnd int
+	if len(args) > 0 {
+		hwnd = args[0]
+
+		return cgetTitle(pid, hwnd)
+	}
+
+	xid, err := GetXId(xu, pid)
+	if err != nil {
+		log.Println("GetXidFromPid errors is: ", err)
+		return ""
+	}
+
+	return cgetTitle(int32(xid), hwnd)
+}
+
 // ActivePIDC active the window by PID,
 // If args[0] > 0 on the unix platform via a xid to active
 func ActivePIDC(pid int32, args ...int) {