/// <summary>
/// 开窗设置
/// </summary>
/// <param name="info">窗口操作信息</param>
/// <returns>TRUE：成功 FALSE：失败</returns>
public static bool WallSetWinCfg(WinCtrlInfo info)
{
NET_DVR_VIDEOWALLWINDOWPOSITION m_struWinCfg = new NET_DVR_VIDEOWALLWINDOWPOSITION();
uint m_dwWallNo = info.WallNo;
uint m_dwRes = 0;
uint m_dwWinNo = info.WinNo;
//窗口号(组合)：1字节电视墙号+1字节保留+2字节窗口号
uint dwWinNum = ((m_dwWallNo & 0xff) << 24) + ((m_dwRes & 0xff) << 16) + (m_dwWinNo & 0xff);
///////////////////////////////////////////////////////////////////////////////
//输入参数
NET_DVR_IN_PARAM struInputParam = new NET_DVR_IN_PARAM();
IntPtr lpBuf = Marshal.AllocHGlobal(4);
Marshal.StructureToPtr(dwWinNum, lpBuf, false);
struInputParam.struCondBuf.pBuf = lpBuf; //输入参数缓冲区，开窗的电视墙号，窗口号由设备自动分配
struInputParam.struCondBuf.nLen = 4;
//窗口参数，包括使能、位置坐标等
m_struWinCfg.dwSize = (uint)Marshal.SizeOf(m_struWinCfg);
m_struWinCfg.byEnable = info.IsEnable;
m_struWinCfg.struRect.dwXCoordinate = ushort.Parse((info.IndexX * winBaseX).ToString());
m_struWinCfg.struRect.dwYCoordinate = ushort.Parse((info.IndexY * winBaseY).ToString());
m_struWinCfg.struRect.dwWidth = winBaseX;
m_struWinCfg.struRect.dwHeight = winBaseY;
Int32 nSize = Marshal.SizeOf(m_struWinCfg);
IntPtr lpInBuf = Marshal.AllocHGlobal(nSize);
Marshal.StructureToPtr(m_struWinCfg, lpInBuf, false);
struInputParam.struInParamBuf.pBuf = lpInBuf; //输入参数缓冲区，开窗的窗口参数
struInputParam.struInParamBuf.nLen = (uint)nSize;
struInputParam.dwRecvTimeOut = 0; //数据接收超时时间，0表示接口默认超时
/////////////////////////////////////////////////////////////////////////////
//输出参数
NET_DVR_OUT_PARAM struOutParam = new NET_DVR_OUT_PARAM();
//输出参数缓冲区，dwCount个窗口号(组合)，dwCount为0
IntPtr lpOutBuf = Marshal.AllocHGlobal(4);
Marshal.StructureToPtr(dwWinNum, lpOutBuf, false);
struOutParam.struOutBuf.pBuf = lpOutBuf;
struOutParam.struOutBuf.nLen = 4;
//状态参数
UInt32 dwStatusList = 0;
IntPtr lpStatusList = Marshal.AllocHGlobal(4);
Marshal.StructureToPtr(dwStatusList, lpStatusList, false);
bool b = NET_DVR_SetDeviceConfigEx(info.UserId, NET_DVR_SET_VIDEOWALLWINDOWPOSITION, 1, ref struInputParam, ref struOutParam);
if (!b)
{
iLastErr = NET_DVR_GetLastError();
strErr = "NET_DVR_SET_VIDEOWALLWINDOWPOSITION failed, error code= " + iLastErr;
//设置窗口参数失败，输出错误号 Failed to set the window parameters of device and output the error code
}
Marshal.FreeHGlobal(lpBuf);
Marshal.FreeHGlobal(lpInBuf);
Marshal.FreeHGlobal(lpOutBuf);
Marshal.FreeHGlobal(lpStatusList);
return(b);
}
public static extern bool NET_DVR_SetDeviceConfigEx(Int32 lUserID, uint dwCommand, uint dwCount, ref NET_DVR_IN_PARAM lpInParam, ref NET_DVR_OUT_PARAM lpOutParam);
