Some improvements to accessibility behaviour

[wxWidgets.git] / src / msw / utils.cpp

diff --git a/src/msw/utils.cpp b/src/msw/utils.cpp
index 117a19c12d6347d751480fa91b53b5f9d3f1e35c..986e6602bfc713e5e4e46590a338429b4e75c68d 100644 (file)
--- a/src/msw/utils.cpp
+++ b/src/msw/utils.cpp
@@ -38,22 +38,17 @@
 #endif
 #endif  //WX_PRECOMP
 
-// In some mingws there is a missing extern "C" int the winsock header,
-// so we put it here just to be safe. Note that this must appear _before_
-// #include "wx/msw/private.h" which itself includes <windows.h>, as this
-// one in turn includes <winsock.h> unless we define WIN32_LEAN_AND_MEAN.
-//
-#if defined(__WIN32__) && !defined(__TWIN32__) && !defined(__WXMICROWIN__) && ! (defined(__GNUWIN32__) && !defined(__MINGW32__))
-extern "C" {
-    #include <winsock.h>    // we use socket functions in wxGetFullHostName()
-}
-#endif
-
 #include "wx/msw/private.h"     // includes <windows.h>
 
+#ifdef __GNUWIN32_OLD__
+    // apparently we need to include winsock.h to get WSADATA and other stuff
+    // used in wxGetFullHostName() with the old mingw32 versions
+    #include <winsock.h>
+#endif
+
 #include "wx/timer.h"
 
-#if !defined(__GNUWIN32__) && !defined(__WXWINE__) && !defined(__SALFORDC__) && !defined(__WXMICROWIN__)
+#if !defined(__GNUWIN32__) && !defined(__SALFORDC__) && !defined(__WXMICROWIN__)
     #include <direct.h>
 
     #ifndef __MWERKS__
@@ -83,8 +78,10 @@ extern "C" {
     #include <lm.h>
 #endif // USE_NET_API
 
-#if defined(__WIN32__) && !defined(__WXWINE__) && !defined(__WXMICROWIN__)
-    #include <io.h>
+#if defined(__WIN32__) && !defined(__WXMICROWIN__)
+    #ifndef __UNIX__
+        #include <io.h>
+    #endif
 
     #ifndef __GNUWIN32__
         #include <shellapi.h>
@@ -178,6 +175,11 @@ bool wxGetFullHostName(wxChar *buf, int maxSize)
 {
 #if defined(__WIN32__) && !defined(__TWIN32__) && !defined(__WXMICROWIN__) && ! (defined(__GNUWIN32__) && !defined(__MINGW32__))
     // TODO should use GetComputerNameEx() when available
+
+    // the idea is that if someone had set wxUSE_SOCKETS to 0 the code
+    // shouldn't use winsock.dll (a.k.a. ws2_32.dll) at all so only use this
+    // code if we link with it anyhow
+#if wxUSE_SOCKETS
     WSADATA wsa;
     if ( WSAStartup(MAKEWORD(1, 1), &wsa) == 0 )
     {
@@ -194,25 +196,27 @@ bool wxGetFullHostName(wxChar *buf, int maxSize)
                 if ( pHostEnt )
                 {
                     // Windows will use DNS internally now
-                    pHostEnt = gethostbyaddr(pHostEnt->h_addr, 4, PF_INET);
+                    pHostEnt = gethostbyaddr(pHostEnt->h_addr, 4, AF_INET);
                 }
 
                 if ( pHostEnt )
                 {
-                    host = pHostEnt->h_name;
+                    host = wxString::FromAscii(pHostEnt->h_name);
                 }
             }
         }
 
         WSACleanup();
 
-        if ( !!host )
+        if ( !host.empty() )
         {
             wxStrncpy(buf, host, maxSize);
 
             return TRUE;
         }
     }
+#endif // wxUSE_SOCKETS
+
 #endif // Win32
 
     return wxGetHostName(buf, maxSize);
@@ -598,14 +602,16 @@ bool wxGetEnv(const wxString& var, wxString *value)
 {
 #ifdef __WIN16__
     const wxChar* ret = wxGetenv(var);
-    if (ret)
+    if ( !ret )
+        return FALSE;
+
+    if ( value )
     {
         *value = ret;
-        return TRUE;
     }
-    else
-        return FALSE;
-#else
+
+    return TRUE;
+#else // Win32
     // first get the size of the buffer
     DWORD dwRet = ::GetEnvironmentVariable(var, NULL, 0);
     if ( !dwRet )
@@ -621,7 +627,7 @@ bool wxGetEnv(const wxString& var, wxString *value)
     }
 
     return TRUE;
-#endif
+#endif // Win16/32
 }
 
 bool wxSetEnv(const wxString& var, const wxChar *value)
@@ -658,6 +664,8 @@ struct wxFindByPidParams
 
     // the PID we're looking from
     DWORD pid;
+
+    DECLARE_NO_COPY_CLASS(wxFindByPidParams)
 };
 
 // wxKill helper: EnumWindows() callback which is used to find the first (top
@@ -838,7 +846,7 @@ int wxKill(long pid, wxSignal sig, wxKillError *krc)
             return 0;
         }
     }
-#else // Win15
+#else // Win16
     wxFAIL_MSG( _T("not implemented") );
 #endif // Win32/Win16
 
@@ -851,7 +859,7 @@ bool wxShell(const wxString& command)
 {
     wxChar *shell = wxGetenv(wxT("COMSPEC"));
     if ( !shell )
-        shell = wxT("\\COMMAND.COM");
+        shell = (wxChar*) wxT("\\COMMAND.COM");
 
     wxString cmd;
     if ( !command )
@@ -865,7 +873,67 @@ bool wxShell(const wxString& command)
         cmd.Printf(wxT("%s /c %s"), shell, command.c_str());
     }
 
-    return wxExecute(cmd, TRUE /* sync */) != 0;
+    return wxExecute(cmd, wxEXEC_SYNC) == 0;
+}
+
+// Shutdown or reboot the PC 
+bool wxShutdown(wxShutdownFlags wFlags)
+{
+#ifdef __WIN32__
+    bool bOK = TRUE;
+
+    if ( wxGetOsVersion(NULL, NULL) == wxWINDOWS_NT ) // if is NT or 2K
+    {
+        // Get a token for this process. 
+        HANDLE hToken; 
+        bOK = ::OpenProcessToken(GetCurrentProcess(),
+                                 TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY,
+                                 &hToken) != 0;
+        if ( bOK )
+        {
+            TOKEN_PRIVILEGES tkp; 
+
+            // Get the LUID for the shutdown privilege. 
+            ::LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,
+                                   &tkp.Privileges[0].Luid); 
+
+            tkp.PrivilegeCount = 1;  // one privilege to set    
+            tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED; 
+
+            // Get the shutdown privilege for this process. 
+            ::AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,
+                                    (PTOKEN_PRIVILEGES)NULL, 0); 
+
+            // Cannot test the return value of AdjustTokenPrivileges. 
+            bOK = ::GetLastError() == ERROR_SUCCESS;
+        }
+    }
+
+    if ( bOK )
+    {
+        UINT flags = EWX_SHUTDOWN | EWX_FORCE;
+        switch ( wFlags )
+        {
+            case wxSHUTDOWN_POWEROFF:
+                flags |= EWX_POWEROFF;
+                break;
+
+            case wxSHUTDOWN_REBOOT:
+                flags |= EWX_REBOOT;
+                break;
+
+            default:
+                wxFAIL_MSG( _T("unknown wxShutdown() flag") );
+                return FALSE;
+        }
+
+        bOK = ::ExitWindowsEx(EWX_SHUTDOWN | EWX_FORCE | EWX_REBOOT, 0) != 0; 
+    }
+
+    return bOK;
+#else // Win16
+    return FALSE;
+#endif // Win32/16
 }
 
 // ----------------------------------------------------------------------------
@@ -885,6 +953,15 @@ long wxGetFreeMemory()
 #endif
 }
 
+unsigned long wxGetProcessId()
+{
+#ifdef __WIN32__
+    return ::GetCurrentProcessId();
+#else
+    return 0;
+#endif
+}
+
 // Emit a beeeeeep
 void wxBell()
 {
@@ -1099,12 +1176,12 @@ void wxDebugMsg(const wxChar *fmt ...)
   static wxChar buffer[512];
 
   if (!wxTheApp->GetWantDebugOutput())
-    return ;
+    return;
 
   va_start(ap, fmt);
 
-  wvsprintf(buffer,fmt,ap) ;
-  OutputDebugString((LPCTSTR)buffer) ;
+  wvsprintf(buffer,fmt,ap);
+  OutputDebugString((LPCTSTR)buffer);
 
   va_end(ap);
 }