window平台下两个进程间通信

功能需求：现如今有两个进程一个进程A，一个进程B，通过Windows的消息机制实现进程A 发送消息给B，进程B也能发送消息给A。

平台：首先我们使用Win32程序实现相应的功能，使用VS2017+C++以及Windows API工具与函数惊醒开发。

方案：通过对需求（即我们只需要两个进程能够收到响应的消息，具体应用场景就是两个进程是同种属性的进程，也即都为另一种进程而生存且服务，例如，现在进程A、B都是为了开启主程序C的，如果用户通过进程A开启的，那么主程序开启过后，进程A、B就都可以关闭了，为了做到同步，进程A就要给进程B发送关闭消息，等进程B接收关闭消息就可执行销毁流程）进行分析，采用比较简单的隐藏窗口来接收相关进程发送的消息，并由自己进行后续的处理；

程序实现：

本程序提供的是其模板，并不能直接运行，需要相应的修改才行！

进程A：

#include“processA“

#include<windows>
#include"processA.h"


#define WM_CLOSEPROCESSA							(WM_USER + 0x2007)	
#define WM_CLOSEPROCESSB						    (WM_USER + 0x2008)


// 隐藏窗口句柄
HINSTANCE g_hInstance = NULL;
// 气泡系统托盘图标菜单窗口类名
LPCTSTR g_szKBubbleTrayIconMenuWindowClass = _T("QWidget");
// 气泡系统托盘图标菜单窗口标题
LPCTSTR g_szKBubbleTrayIconMenuWindowTitle = _T("1BEEF4DE-B3B3-49CA-A03A-0F2EB34920F1_mini");
// 窗口类名字符串
LPCTSTR g_szToastIconWindowClassName = _T("mini_window");
//窗口标题字符串
LPCTSTR g_szToastIconWindowTitle = _T("23A5B06E-20BB-4E7E-A0AC-6982ED6A6041_tosat");


/*
@brief 调用主程序并发送信息
*/

  BOOL sendSomeMessage()
  {

  /*
  lanch process C (or other process)
  method: ShellExecute(NULL ,L"open" , ExepathName, CommandPath , NULL , SW_NORMAL);
  then send colse message
  */

  
  HWND hwnd = FindWindow(g_szKBubbleTrayIconMenuWindowClass , g_szKBubbleTrayIconMenuWindowTitle);
  if (hwnd == NULL)
  return false;
  ::SendMessage(hwnd , WM_CLOSEPROCESSB , 0 , 0);
  return true;
  }




/*
 @brief 处理通知窗口消息
 @param uMsg包含mini发送的关闭消息通知
*/
LRESULT CALLBACK HiddenWindowProcess(__in HWND hwnd , __in UINT uMsg , __in WPARAM wParam , __in LPARAM lParam)
{
	switch (uMsg) 
	{
		case WM_CLOSEPROCESSA:
			closeHandle(g_hInstance);
                //处理关闭事宜
			break;
		default:
			return DefWindowProc(hwnd , uMsg , wParam , lParam);
	}
	return true;
}

/*
*brief 创建用于接收关闭消息的隐藏窗口
*return TRUE创建成功  FALSE创建失败
*/
BOOL CreateHiddenWindow()
{
	WNDCLASS wcMinisiteWindowClass = { 0 };
	wcMinisiteWindowClass.style = CS_HREDRAW | CS_VREDRAW;
	wcMinisiteWindowClass.lpfnWndProc = HiddenWindowProcess;
	wcMinisiteWindowClass.cbClsExtra = 0;
	wcMinisiteWindowClass.cbWndExtra = 0;
	wcMinisiteWindowClass.hInstance = g_hInstance;
	wcMinisiteWindowClass.hIcon = NULL;
	wcMinisiteWindowClass.hCursor = ::LoadCursor(NULL , IDC_ARROW);
	wcMinisiteWindowClass.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
	wcMinisiteWindowClass.lpszMenuName = NULL;
	wcMinisiteWindowClass.lpszClassName = g_szToastIconWindowClassName;
	if (::RegisterClass(&wcMinisiteWindowClass) == 0)
		return FALSE;
	::CreateWindow(g_szToastIconWindowClassName , g_szToastIconWindowTitle , WS_OVERLAPPED , 0 , 0 , 1 , 1 , NULL , NULL , g_hInstance , NULL);
	MSG msg;
	while (::GetMessage(&msg , NULL,0,0)) 
	{
		::TranslateMessage(&msg);
		::DispatchMessage(&msg);
	}
	return TRUE;
}

int WINAPI wWinMain(_In_ HINSTANCE hInstance , _In_opt_ HINSTANCE , _In_ LPWSTR cmdLineArgs , _In_ int)
{
	
	CreateHiddenWindow();
/*
do other something...........
*/

	sendSomeMessage()
	return 0;
}

进程B：

#include“processB“

#include<windows>
#include"processB.h"

#define WM_CLOSEPROCESSA							(WM_USER + 0x2007)	
#define WM_CLOSEPROCESSB						    (WM_USER + 0x2008)		


// 隐藏窗口句柄
HINSTANCE g_hInstance = NULL;
// 气泡系统托盘图标菜单窗口类名
LPCTSTR g_szKBubbleTrayIconMenuWindowClass = _T("QWidget");
// 气泡系统托盘图标菜单窗口标题
LPCTSTR g_szKBubbleTrayIconMenuWindowTitle = _T("1BEEF4DE-B3B3-49CA-A03A-0F2EB34920F1_mini");
// 窗口类名字符串
LPCTSTR g_szToastIconWindowClassName = _T("mini_window");
//窗口标题字符串
LPCTSTR g_szToastIconWindowTitle = _T("23A5B06E-20BB-4E7E-A0AC-6982ED6A6041_tosat");


/*
@brief 调用主程序并发送信息
*/

  BOOL sendSomeMessage()
  {

  /*
  lanch process C (or other process)
  method: ShellExecute(NULL ,L"open" , ExepathName, CommandPath , NULL , SW_NORMAL);
  then send colse message
  */

  
  HWND hwnd = FindWindow(g_szToastIconWindowClassName , g_szToastIconWindowTitle);
  if (hwnd == NULL)
  return false;
  ::SendMessage(hwnd , WM_CLOSEPROCESSA , 0 , 0);//发送信息
  return true;
  }




/*
 @brief 处理通知窗口消息
 @param uMsg包含mini发送的关闭消息通知
*/
LRESULT CALLBACK HiddenWindowProcess(__in HWND hwnd , __in UINT uMsg , __in WPARAM wParam , __in LPARAM lParam)
{
	switch (uMsg) //接受信息
	{
		case WM_CLOSEPROCESSB:
			closeHandle(g_hInstance);
                //处理关闭事宜
			break;
		default:
			return DefWindowProc(hwnd , uMsg , wParam , lParam);
	}
	return true;
}

/*
*brief 创建用于接收关闭消息的隐藏窗口
*return TRUE创建成功  FALSE创建失败
*/
BOOL CreateHiddenWindow()
{
	WNDCLASS wcMinisiteWindowClass = { 0 };
	wcMinisiteWindowClass.style = CS_HREDRAW | CS_VREDRAW;
	wcMinisiteWindowClass.lpfnWndProc = HiddenWindowProcess;
	wcMinisiteWindowClass.cbClsExtra = 0;
	wcMinisiteWindowClass.cbWndExtra = 0;
	wcMinisiteWindowClass.hInstance = g_hInstance;
	wcMinisiteWindowClass.hIcon = NULL;
	wcMinisiteWindowClass.hCursor = ::LoadCursor(NULL , IDC_ARROW);
	wcMinisiteWindowClass.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
	wcMinisiteWindowClass.lpszMenuName = NULL;
	wcMinisiteWindowClass.lpszClassName = g_szKBubbleTrayIconMenuWindowClass;
	if (::RegisterClass(&wcMinisiteWindowClass) == 0)
		return FALSE;
	::CreateWindow(g_szKBubbleTrayIconMenuWindowClass , g_szKBubbleTrayIconMenuWindowTitle , WS_OVERLAPPED , 0 , 0 , 1 , 1 , NULL , NULL , g_hInstance , NULL);
	MSG msg;
	while (::GetMessage(&msg , NULL,0,0)) 
	{
		::TranslateMessage(&msg);
		::DispatchMessage(&msg);
	}
	return TRUE;
}

int WINAPI wWinMain(_In_ HINSTANCE hInstance , _In_opt_ HINSTANCE , _In_ LPWSTR cmdLineArgs , _In_ int)
{
	
	CreateHiddenWindow();

/*

do other something.........
 
*/
	sendSomeMessage()

	return 0;
}

window平台下两个进程间通信

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