In w32api, the definition of WTS_CURRENT_SESSION in wtsapi32.h is #define WTS_CURRENT_SESSION 0
However, from the Microsoft Windows SDK for Windows Server 2008 and .NET Framework 3.5 (http://www.microsoft.com/downloads/details.aspx?FamilyId=E6E1C3DF-A74F- 4207-8586-711EBE331CDC&displaylang=en), the definition is /* * Specifies the current session (SessionId) */ #define WTS_CURRENT_SESSION ((DWORD)-1) This results in the wrong session being referenced when used in WTS API calls such as WTSQuerySessionInformation. The following small example demonstrates the problem: when I run this over an RDP connection to my Windows box (logged in as an admin user), it prints Is a remote connection: 0 which is obviously incorrect. If the "WTS_CURRENT_SESSION" is changed to "-1", then the expected result Is a remote connection: 1 is returned. /* Compile with gcc -Wall -DWINVER=0x0501 -o test-wts test-wts.c -lwtsapi32 */ #include <windows.h> #include <wtsapi32.h> #include <stdio.h> int main(void) { USHORT *clnProto; DWORD size; if (WTSQuerySessionInformation(WTS_CURRENT_SERVER_HANDLE, WTS_CURRENT_SESSION, WTSClientProtocolType, (LPTSTR *)&clnProto, &size)) { printf("Is a remote connection: %d\n", (*clnProto != 0)); WTSFreeMemory(clnProto); } return 0; } Linton -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/
