捕获鼠标和键盘的原始数据

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为了实现局域网内鼠标键盘的共享(比如你同时用两台电脑，这时就希望能共享鼠标和键盘)，需要获得主机的鼠标键盘原始信息，下面的demo演示了如何获得主机的鼠标键盘原始数据。程序运行后无论是否获得焦点，都能够得到鼠标键盘数据。

实现的关键是使用了RawInput，使用过程是先注册需要捕获的设备，然后在DefWindowProc函数中截取所需的数据。

其中注册鼠标键盘设备的代码放在一个按钮的响应函数中：

void CRawInputDlg::OnButton1() {RAWINPUTDEVICE Rid[2];        Rid[0].usUsagePage = 0x01; Rid[0].usUsage = 0x02; Rid[0].dwFlags = RIDEV_INPUTSINK;   // adds HID mouse and also ignores legacy mouse messages   RIDEV_NOLEGACY RIDEV_INPUTSINKRid[0].hwndTarget = m_hWnd;Rid[1].usUsagePage = 0x01; Rid[1].usUsage = 0x06; Rid[1].dwFlags = RIDEV_INPUTSINK;   // adds HID keyboard and also ignores legacy keyboard messages RIDEV_NOLEGACY RIDEV_INPUTSINKRid[1].hwndTarget = m_hWnd;if (RegisterRawInputDevices(Rid, 2, sizeof(Rid[0])) == FALSE) {//registration failed. Call GetLastError for the cause of the errorMessageBox("错误的注册信息");}}

数据捕获：

LRESULT CRawInputDlg::DefWindowProc(UINT message, WPARAM wParam, LPARAM lParam) {// TODO: Add your specialized code here and/or call the base classif ( message == WM_INPUT ){UINT dwSize=0;GetRawInputData((HRAWINPUT)lParam,(UINT)RID_INPUT,(LPVOID)NULL,(PUINT)&dwSize,(UINT)sizeof(RAWINPUTHEADER));LPBYTE lpbBuffer = new BYTE[dwSize];GetRawInputData(      (HRAWINPUT)lParam,(UINT)RID_INPUT,(LPVOID)lpbBuffer,(PUINT)&dwSize,(UINT)sizeof(RAWINPUTHEADER));RAWINPUT * raw = (RAWINPUT *) lpbBuffer;CString strTemp;tmTime=CTime::GetCurrentTime();CString strT;strT=tmTime.Format("%H:%M:%S");if (raw->header.dwType == RIM_TYPEMOUSE){strTemp.Format(" 鼠标: BtnState=%04x deltaX=%d deltaY=%d\r\n",             raw->data.mouse.ulButtons,             raw->data.mouse.lLastX,             raw->data.mouse.lLastY);strTemp=strT+strTemp;DisplayData(strTemp);delete[] lpbBuffer;return TRUE;}else if(raw->header.dwType == RIM_TYPEKEYBOARD){strTemp.Format(" 键盘:make=%04x Flags:%04x msg=%04x VK=%c",             raw->data.keyboard.MakeCode,             raw->data.keyboard.Flags,             raw->data.keyboard.Message,             raw->data.keyboard.VKey);strTemp=strT+strTemp;DisplayData(strTemp);delete[] lpbBuffer;return TRUE;}}return CDialog::DefWindowProc(message, wParam, lParam);}

运行效果

参考资料：

http://bbs.csdn.net/topics/330017277

Using Raw Input
http://msdn.microsoft.com/en-us/library/ms645546(v=vs.85).aspx
Using Mouse Input
msdn.microsoft.com/en-us/library/ms645602(v=vs.85).aspx
About Raw Input
http://msdn.microsoft.com/en-us/library/ms645543(v=vs.85).aspx

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