Chrome与Windows UI通信

查看网上有较多的进程间通信处理，这里使用两种方式进行处理
1，MappingFile的处理
这种方式存在一个不足是进程间更新无法实时
传递的结构体

struct ShareMappingInfo {int uiHandle;int chromeHandle;int other;	
};

进程1创建mapping

static void CreateMappingFile(HWND hWnd) {HANDLE hMySharedMapFile = CreateFileMapping((HANDLE)0xFFFFFFFF, NULL, PAGE_READWRITE, 0, sizeof(ShareMappingInfo), L"ShareMemWithChrome");LPSTR pszMySharedMapView = (LPSTR)MapViewOfFile(hMySharedMapFile, FILE_MAP_READ | FILE_MAP_WRITE, 0, 0, 0);ShareMappingInfo data = { (int)hWnd,100,50 };if (0 > memcpy_s(pszMySharedMapView, sizeof(ShareMappingInfo), &data, sizeof(ShareMappingInfo))) {printf("mapping file error");}}

进程2读取

static void GetMappingFileData() {HANDLE hMySharedMapFileRcv = OpenFileMapping(FILE_MAP_READ | FILE_MAP_WRITE, FALSE, L"ShareMemWithChrome");if (hMySharedMapFileRcv) {LPTSTR lpMapAddr = (LPTSTR)MapViewOfFile(hMySharedMapFileRcv, FILE_MAP_READ | FILE_MAP_WRITE, 0, 0, 0);ShareMappingInfo result;memcpy_s(&result, sizeof(ShareMappingInfo), lpMapAddr, sizeof(ShareMappingInfo));printf("get mapping file data: uiHandle=%d,%d,%d\n", result.uiHandle, result.chromeHandle, result.other);if (!UnmapViewOfFile(lpMapAddr)) {printf("could not unmap view of file\n");}}}

2， SendMessage/PostMessage
发送端chrome 通过FindWindow查询到对应windowsUI的句柄，使用句柄使用SendMessage/PostMessage进行发送
chrome：

#define UI_CHROME 2000 // 自定义消息ID，需与UI保持一致HWND hd = FindWindow(L"Windows_UI_Name", L"Windows_UI_Name");if (hd) {PostMessage(hd, WM_COMMAND, UI_CHROME , 10);// 或者 SendMessage(hd, WM_COMMAND, UI_CHROME , 10);// 两者差异在意post将消息放入处理队列后立即返回进行其他处理，send需要等待返回}

UI:
UI对应有自己的消息处理函数WndProc

static LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam) {switch (message){case WM_COMMAND:{int wmId = LOWORD(wParam);switch (wmId){case UI_CHROME : {cout << "Handle the message:" <<(int)lParam<< endl; // 输出应该是10break;		}}}}
}