I have not called a Windows API from go before, so there may be other problems with your code. But looking at WlanEnumInterfaces documentation <https://msdn.microsoft.com/en-us/library/windows/desktop/ms706716(v=vs.85).aspx> the last parameter is *not *a pointer to a pointer to a WLAN_INTERFACE_INFO_LIST, it is a pointer to a PWLAN_INTERFACE_INFO_LIST. So, in C terms. it is a *WLAN_INTERFACE_INFO_LIST***. In other words, you should be passing it a *pointer *to a uintptr, then dereferencing it twice to get the actual list.
(Also, don't forget to call *WlanFreeMemory* when you are done.) Good Luck - Jake On Thursday, December 14, 2017 at 11:15:52 PM UTC-5, 流沙 wrote: > > API Address:https://msdn.microsoft.com/en-us/library/ms706716(VS.85).aspx > > Code: > > package main > > // #define WIN32_LEAN_AND_MEAN > // #include <windows.h> > > import ( > "fmt" > "syscall" > "unsafe" > "C" > ) > var ( > wlankernal,_ = syscall.LoadLibrary("Wlanapi.dll") > wlanhandle,_ = syscall.GetProcAddress(wlankernal,"WlanOpenHandle") > wlanclosehandle,_ = syscall.GetProcAddress(wlankernal,"WlanCloseHandle") > wlanenumInterfaces,_ = > syscall.GetProcAddress(wlankernal,"WlanEnumInterfaces") > wlangetprofile,_ = syscall.GetProcAddress(wlankernal,"WlanGetProfileList") > ) > type ulong int32 > > type WLAN_INTERFACE_INFO struct{ > InterfaceGuid syscall.GUID > strInterfaceDescription string > isState uint > } > > type WLAN_INTERFACE_INFO_LIST struct { > NumberOfItems uint32 > Index uint32 > InterfaceInfo WLAN_INTERFACE_INFO > } > > type WLAN_PROFILE_INFO struct{ > ProfileName C.char > Flags ulong > } > > type WLAN_PROFILE_INFO_LIST struct{ > NumberOfItems ulong > Index ulong > ProfileInfo WLAN_PROFILE_INFO > } > > func abort(funcname string, err error) { > panic(fmt.Sprintf("%s failed: %v", funcname, err)) > } > > //打开一个WLAN句柄 > func WlanOpenHandle() (result uint32) { > negotiated_version := uint32(0) > client_handle := uint32(0) > dwClientVersion := uint32(2) > var nargs uintptr = 4 > ret,_,callErr := syscall.Syscall6(uintptr(wlanhandle), > nargs, > uintptr(dwClientVersion), > 0, > uintptr(unsafe.Pointer(&negotiated_version)), > uintptr(unsafe.Pointer(&client_handle)), > 0, > 0, > ) > if ret != 0{ > abort("StartWLANHandleError", callErr) > return > } > result = uint32(client_handle) > return > } > > //关闭WLAN句柄 > func WlanCloseHandle() { > var nargs uintptr = 2 > handle :=WlanOpenHandle() > ret,_,callErr := syscall.Syscall(uintptr(wlanclosehandle), > nargs, > uintptr(handle), > 0, > 0, > ) > if ret !=0{ > abort("CloseHandleError",callErr) > return > } > fmt.Println("WlanCloseHandle Successful") > } > > > func main() { > defer syscall.FreeLibrary(wlankernal) > var nargs uintptr = 3 > handle :=WlanOpenHandle(); > var wlan_interface_info WLAN_INTERFACE_INFO_LIST; > ret,_,callErr := syscall.Syscall(uintptr(wlanenumInterfaces), > nargs, > uintptr(handle), > 0, > uintptr(unsafe.Pointer(&wlan_interface_info)), > ) > if ret !=0{ > abort("WlanEnumInterfacesError",callErr) > return > } > WlanCloseHandle() > fmt.Println(ret) > fmt.Println(wlan_interface_info) > } > > > > wlan_interface_info returns a value of {7306176 0 {{0 0 0 [0 0 0 0 0 0 0 > 0]} 0}} > This value seems to be wrong！ > May I ask how to solve this problem？ > > -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
