diff --git a/README.md b/README.md
index 11526cd..f4177af 100644
--- a/README.md
+++ b/README.md
@@ -12,11 +12,11 @@
 
   
   >Golang Desktop Automation, Control the mouse, keyboard, bitmap,read the screen,Window Handle and global event listener.
-  [warn]This is a work in progress.
+This is a work in progress.
 
 ##Supported platforms
 
-MacOS, Windows, and Linux(with X11)
+MacOS, Windows, Linux(with X11)
 
 ##API Docs
 
@@ -24,7 +24,7 @@ MacOS, Windows, and Linux(with X11)
 
 ##Requirements install
 
-Before RobotGo installation, make sure Golang/GCC/zlib & libpng have been installed correctly.
+Before RobotGo installation, make sure Golang/GCC/zlib/libpng have been installed correctly.
 
 ####Under MacOS
 ```
diff --git a/README_zh.md b/README_zh.md
index 77f0db0..5731df0 100644
--- a/README_zh.md
+++ b/README_zh.md
@@ -14,27 +14,16 @@ RobotGo 支持 Mac, Windows, and Linux(X11).
 提Issues请到[Github](https://github.com/go-vgo/robotgo),便于统一管理和即时更新
 
 
-##[中文文档](https://github.com/go-vgo/robotgo/blob/master/doc_zh.md)   [API Document](https://github.com/go-vgo/robotgo/blob/master/doc.md) 
+##[中文文档](https://github.com/go-vgo/robotgo/blob/master/docs/doc_zh.md)   [API Document](https://github.com/go-vgo/robotgo/blob/master/docs/doc.md) 
  英文文档请点击API Document.
 
+- [Requirements](#requirements)
 - [Installation](#installation)
 - [Update](#update)
-- [Requirements](#requirements)
 - [Examples](#examples)
 - [Future](#future)
 - [Contributors](#contributors)
 
-
-##Installation:
-```
-go get github.com/go-vgo/robotgo
-```
-  It's that easy!
-
-##Update:
-```
-go get -u github.com/go-vgo/robotgo   
-```
 ###Requirements:
 (环境要求)
 
@@ -86,6 +75,17 @@ sudo apt-get install libxkbcommon-dev
 
 ```
 
+##Installation:
+```
+go get github.com/go-vgo/robotgo
+```
+  It's that easy!
+
+##Update:
+```
+go get -u github.com/go-vgo/robotgo   
+```
+
 ##[Examples:](https://github.com/go-vgo/robotgo/blob/master/example/main.go)
 
 ###鼠标
diff --git a/doc.md b/docs/doc.md
similarity index 98%
rename from doc.md
rename to docs/doc.md
index f7be2b6..52f19d2 100644
--- a/doc.md
+++ b/docs/doc.md
@@ -64,6 +64,7 @@
 #####[SetHandle](#SetHandle)
 #####[GetHandle](#GetHandle)
 #####[GetTitle](#GetTitle)
+#####[GetPID](#GetPID)
 
 ###<h3 id="GetVersion">.GetVersion()</h3>
     get robotgo version
@@ -525,5 +526,15 @@ func main() {
            
 
 ####Return:
-    Returns Window Title           
+    Returns Window Title      
+
+###<h3 id="GetPID">.GetPID()</h3>
+
+   Get the process id
+
+####Arguments:
+           
+
+####Return:
+    Returns the process id         
      
diff --git a/doc_zh.md b/docs/doc_zh.md
similarity index 98%
rename from doc_zh.md
rename to docs/doc_zh.md
index 9e39ef5..46c8f37 100644
--- a/doc_zh.md
+++ b/docs/doc_zh.md
@@ -67,6 +67,7 @@
 #####[SetHandle](#SetHandle)
 #####[GetHandle](#GetHandle)
 #####[GetTitle](#GetTitle)
+#####[GetPID](#GetPID)
 
 
 ##<h2 id="Keyboard">键盘</h2>
@@ -540,4 +541,14 @@ func main() {
            
 
 ####返回值:
-    返回窗口标题     
\ No newline at end of file
+    返回窗口标题  
+
+###<h3 id="GetPID">.GetPID()</h3>
+
+   获取进程id
+
+####参数:
+           
+
+####返回值:
+    返回进程id        
\ No newline at end of file
diff --git a/event/goEvent.h b/event/goEvent.h
index 3028911..556e3de 100644
--- a/event/goEvent.h
+++ b/event/goEvent.h
@@ -42,7 +42,7 @@
 int aStop();
 int aEvent(char *aevent);
 
-bool logger_proc(unsigned int level, const char *format, ...) {
+bool loggerProc(unsigned int level, const char *format, ...) {
 	bool status = false;
 
 	va_list args;
@@ -101,18 +101,18 @@ void dispatch_proc(iohook_event * const event) {
 				switch (status) {
 					// System level errors.
 					case IOHOOK_ERROR_OUT_OF_MEMORY:
-						logger_proc(LOG_LEVEL_ERROR, "Failed to allocate memory. (%#X)", status);
+						loggerProc(LOG_LEVEL_ERROR, "Failed to allocate memory. (%#X)", status);
 						break;
 
 					case IOHOOK_ERROR_X_RECORD_GET_CONTEXT:
 						// NOTE This is the only platform specific error that occurs on hook_stop().
-						logger_proc(LOG_LEVEL_ERROR, "Failed to get XRecord context. (%#X)", status);
+						loggerProc(LOG_LEVEL_ERROR, "Failed to get XRecord context. (%#X)", status);
 						break;
 
 					// Default error.
 					case IOHOOK_FAILURE:
 					default:
-						logger_proc(LOG_LEVEL_ERROR, "An unknown hook error occurred. (%#X)", status);
+						loggerProc(LOG_LEVEL_ERROR, "An unknown hook error occurred. (%#X)", status);
 						break;
 				}
 			}
@@ -210,7 +210,7 @@ int aEvent(char *aevent) {
 	// (uint16_t *)
 	cevent=aevent;
 	// Set the logger callback for library output.
-	hook_set_logger_proc(&logger_proc);
+	hookSetlogger(&loggerProc);
 
 	// Set the event callback for IOhook events.
 	hook_set_dispatch_proc(&dispatch_proc);
@@ -225,63 +225,63 @@ int aEvent(char *aevent) {
 
 		// System level errors.
 		case IOHOOK_ERROR_OUT_OF_MEMORY:
-			logger_proc(LOG_LEVEL_ERROR, "Failed to allocate memory. (%#X)", status);
+			loggerProc(LOG_LEVEL_ERROR, "Failed to allocate memory. (%#X)", status);
 			break;
 
 
 		// X11 specific errors.
 		case IOHOOK_ERROR_X_OPEN_DISPLAY:
-			logger_proc(LOG_LEVEL_ERROR, "Failed to open X11 display. (%#X)", status);
+			loggerProc(LOG_LEVEL_ERROR, "Failed to open X11 display. (%#X)", status);
 			break;
 
 		case IOHOOK_ERROR_X_RECORD_NOT_FOUND:
-			logger_proc(LOG_LEVEL_ERROR, "Unable to locate XRecord extension. (%#X)", status);
+			loggerProc(LOG_LEVEL_ERROR, "Unable to locate XRecord extension. (%#X)", status);
 			break;
 
 		case IOHOOK_ERROR_X_RECORD_ALLOC_RANGE:
-			logger_proc(LOG_LEVEL_ERROR, "Unable to allocate XRecord range. (%#X)", status);
+			loggerProc(LOG_LEVEL_ERROR, "Unable to allocate XRecord range. (%#X)", status);
 			break;
 
 		case IOHOOK_ERROR_X_RECORD_CREATE_CONTEXT:
-			logger_proc(LOG_LEVEL_ERROR, "Unable to allocate XRecord context. (%#X)", status);
+			loggerProc(LOG_LEVEL_ERROR, "Unable to allocate XRecord context. (%#X)", status);
 			break;
 
 		case IOHOOK_ERROR_X_RECORD_ENABLE_CONTEXT:
-			logger_proc(LOG_LEVEL_ERROR, "Failed to enable XRecord context. (%#X)", status);
+			loggerProc(LOG_LEVEL_ERROR, "Failed to enable XRecord context. (%#X)", status);
 			break;
 
 
 		// Windows specific errors.
 		case IOHOOK_ERROR_SET_WINDOWS_HOOK_EX:
-			logger_proc(LOG_LEVEL_ERROR, "Failed to register low level windows hook. (%#X)", status);
+			loggerProc(LOG_LEVEL_ERROR, "Failed to register low level windows hook. (%#X)", status);
 			break;
 
 
 		// Darwin specific errors.
 		case IOHOOK_ERROR_AXAPI_DISABLED:
-			logger_proc(LOG_LEVEL_ERROR, "Failed to enable access for assistive devices. (%#X)", status);
+			loggerProc(LOG_LEVEL_ERROR, "Failed to enable access for assistive devices. (%#X)", status);
 			break;
 
 		case IOHOOK_ERROR_CREATE_EVENT_PORT:
-			logger_proc(LOG_LEVEL_ERROR, "Failed to create apple event port. (%#X)", status);
+			loggerProc(LOG_LEVEL_ERROR, "Failed to create apple event port. (%#X)", status);
 			break;
 
 		case IOHOOK_ERROR_CREATE_RUN_LOOP_SOURCE:
-			logger_proc(LOG_LEVEL_ERROR, "Failed to create apple run loop source. (%#X)", status);
+			loggerProc(LOG_LEVEL_ERROR, "Failed to create apple run loop source. (%#X)", status);
 			break;
 
 		case IOHOOK_ERROR_GET_RUNLOOP:
-			logger_proc(LOG_LEVEL_ERROR, "Failed to acquire apple run loop. (%#X)", status);
+			loggerProc(LOG_LEVEL_ERROR, "Failed to acquire apple run loop. (%#X)", status);
 			break;
 
 		case IOHOOK_ERROR_CREATE_OBSERVER:
-			logger_proc(LOG_LEVEL_ERROR, "Failed to create apple run loop observer. (%#X)", status);
+			loggerProc(LOG_LEVEL_ERROR, "Failed to create apple run loop observer. (%#X)", status);
 			break;
 
 		// Default error.
 		case IOHOOK_FAILURE:
 		default:
-			logger_proc(LOG_LEVEL_ERROR, "An unknown hook error occurred. (%#X)", status);
+			loggerProc(LOG_LEVEL_ERROR, "An unknown hook error occurred. (%#X)", status);
 			break;
 	}
 
@@ -295,18 +295,18 @@ int aStop(){
 	switch (status) {
 		// System level errors.
 		case IOHOOK_ERROR_OUT_OF_MEMORY:
-			logger_proc(LOG_LEVEL_ERROR, "Failed to allocate memory. (%#X)", status);
+			loggerProc(LOG_LEVEL_ERROR, "Failed to allocate memory. (%#X)", status);
 			break;
 
 		case IOHOOK_ERROR_X_RECORD_GET_CONTEXT:
 			// NOTE This is the only platform specific error that occurs on hook_stop().
-			logger_proc(LOG_LEVEL_ERROR, "Failed to get XRecord context. (%#X)", status);
+			loggerProc(LOG_LEVEL_ERROR, "Failed to get XRecord context. (%#X)", status);
 			break;
 
 				// Default error.
 		case IOHOOK_FAILURE:
 			default:
-			// logger_proc(LOG_LEVEL_ERROR, "An unknown hook error occurred. (%#X)", status);
+			// loggerProc(LOG_LEVEL_ERROR, "An unknown hook error occurred. (%#X)", status);
 			break;
 	}
 
diff --git a/event/hook/logger_c.h b/event/hook/logger_c.h
index ccc16ed..8752245 100644
--- a/event/hook/logger_c.h
+++ b/event/hook/logger_c.h
@@ -43,7 +43,7 @@ static bool default_logger(unsigned int level, const char *format, ...) {
 logger_t logger = &default_logger;
 
 
-IOHOOK_API void hook_set_logger_proc(logger_t logger_proc) {
+IOHOOK_API void hookSetlogger(logger_t logger_proc) {
 	if (logger_proc == NULL) {
 		logger = &default_logger;
 	}
diff --git a/example/main.go b/example/main.go
index 739e509..1e41ba0 100644
--- a/example/main.go
+++ b/example/main.go
@@ -151,7 +151,8 @@ func main() {
 		fmt.Println("ok@@@", "ok")
 	}
 	robotgo.ShowAlert("hello", "robotgo", "Ok", "Cancel")
-	// robotgo.GetPID()
+	pid := robotgo.GetPID() //Get the current process id
+	fmt.Println("pid----", pid)
 	mdata := robotgo.GetActive() //Get current Window Active
 	hwnd := robotgo.GetHandle()  //Get current Window Handle
 	fmt.Println("hwnd---", hwnd)
diff --git a/robotgo.go b/robotgo.go
index 9367c89..c433004 100644
--- a/robotgo.go
+++ b/robotgo.go
@@ -39,7 +39,7 @@ import (
 )
 
 const (
-	version string = "v0.42.0.219,Mount Ngauruhoe!"
+	version string = "v0.42.0.225,Mount Ngauruhoe!"
 )
 
 //GetVersion get version
@@ -625,15 +625,12 @@ func Convert(args ...interface{}) {
 }
 
 /*
-
------------- ---    ---  ------------ ----    ---- ------------
-************ ***    ***  ************ *****   **** ************
-----         ---    ---  ----         ------  ---- ------------
-************ ***    ***  ************ ************     ****
------------- ---    ---  ------------ ------------     ----
-****          ********   ****         ****  ******     ****
-------------   ------    ------------ ----   -----     ----
-************    ****     ************ ****    ****     ****
+ ___________    ____  _______ .__   __. .___________.
+|   ____\   \  /   / |   ____||  \ |  | |           |
+|  |__   \   \/   /  |  |__   |   \|  | `---|  |----`
+|   __|   \      /   |   __|  |  . `  |     |  |
+|  |____   \    /    |  |____ |  |\   |     |  |
+|_______|   \__/     |_______||__| \__|     |__|
 */
 
 //Map a map
@@ -777,3 +774,9 @@ func GetTitle() string {
 	// Println("title...", gtittle)
 	return gtittle
 }
+
+//GetPID Get the process id
+func GetPID() int {
+	pid := C.aGetPID()
+	return int(pid)
+}
diff --git a/window/goWindow.h b/window/goWindow.h
index fe0617b..4a7d3ca 100644
--- a/window/goWindow.h
+++ b/window/goWindow.h
@@ -57,3 +57,8 @@ char* aGetTitle(){
 	// printf("title::::%s\n",title );
 	return title;
 }
+
+int32 aGetPID(void){
+	int pid=WGetPID();
+	return pid;
+}
diff --git a/window/window.h b/window/window.h
index 3e9da69..0c082b2 100644
--- a/window/window.h
+++ b/window/window.h
@@ -867,3 +867,39 @@ char *GetTitle(){
 #endif
 }
 
+int32 WGetPID(void){
+	// Check window validity
+	if (!IsValid()) return 0;
+
+#if defined(IS_MACOSX)
+
+	pid_t pid = 0;
+	// Attempt to retrieve the window pid
+	if (AXUIElementGetPid(mData.AxID, &pid)
+			== kAXErrorSuccess) return pid;
+
+	return 0;
+
+#elif defined(USE_X11)
+
+	// Ignore X errors
+	XDismissErrors();
+
+	// Get the window PID
+	long* result = (long*)
+		GetWindowProperty(mData, WM_PID,NULL);
+
+	// Check result and convert it
+	if (result == NULL) return 0;
+	int32 pid = (int32) *result;
+	XFree (result); return pid;
+
+#elif defined(IS_WINDOWS)
+
+	DWORD  id = 0;
+	GetWindowThreadProcessId (mData.HWnd, &id);
+	return id;
+
+#endif
+}
+