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程序間通訊之檔案對映

send.cpp的內容如下:

#include <Windows.h>
#include <iostream>

int main()
{
	// 建立一個命名的檔案對映控制代碼
	 HANDLE hMapping = CreateFileMapping((HANDLE)0xFFFFFFFF, NULL, PAGE_READWRITE, 0, 0x100, "COMMUNICATION");
	if (hMapping == NULL)
	{
		std::cout << "建立檔案映像物件失敗" << std::endl;
		return 0;
	}

	// 將檔案對映控制代碼關聯到程序的地址空間上  
	LPSTR StrData = (LPSTR)MapViewOfFile(hMapping, FILE_MAP_ALL_ACCESS, 0, 0, 0);
	if (StrData == NULL)
	{
		std::cout << "檔案對映失敗" << std::endl;
		return 0;
	}

	// 向對映記憶體寫資料  
	do
	{
		std::cout << "請輸入內容: ";
		std::cin >> StrData;
	} while (strcmp(StrData, "exit") != 0);
	
	//釋放映像記憶體  
	UnmapViewOfFile(StrData);

	std::cout << "press any key to exit." << std::endl;
	std::cin.get();
	return 0;
}


recv.cpp的內容如下:

#include <iostream>
#include <Windows.h>

int main()
{
	 HANDLE hMapping = OpenFileMapping(FILE_MAP_ALL_ACCESS, FALSE, "COMMUNICATION");
	if (hMapping == NULL)
	{
		std::cout << "開啟檔案映像物件失敗" << std::endl;
		std::cin.get();
		return 0;
	}
	LPSTR StrData = (LPSTR)MapViewOfFile(hMapping, FILE_MAP_ALL_ACCESS, 0, 0, 0);
	if (StrData == NULL)
	{
		std::cout << "檔案對映失敗" << std::endl;
		std::cin.get();
		return 0;
	}

	//獲取映像記憶體的資料量  
	std::cout << "等待接收資料..." << std::endl;
	while (true)
	{
		if (strlen(StrData) == 0)
		{
			Sleep(1);
			continue;
		}
		std::cout << "recv data: " << StrData << std::endl;
		StrData[0] = '\0';
	}
	
	//釋放映像記憶體  
	UnmapViewOfFile(StrData);

	std::cout << "press any key to exit." << std::endl;
	std::cin.get();
	return 0;
}