树莓派如何获取wifi信号强度具体数值

现在WIFI热点越来越多，以下是通过C++ wlanapi来获取当前可检测到的SID的信号强度。

void WifiQual()

{

DWORD dwError = ERROR_SUCCESS;

DWORD dwNegotiatedVersion;

HANDLE hClientHandle = NULL;

dwError = WlanOpenHandle(WLAN_API_VERSION_1_0, NULL, dwNegotiatedVersion, hClientHandle);