From d8c65cf48881468f97798ac521fb93f9b8b5a293 Mon Sep 17 00:00:00 2001
From: Robin Dunn <robin@alldunn.com>
Date: Mon, 10 Mar 2003 23:38:17 +0000
Subject: [PATCH] If zero time is specified, don't try to sleep when using a
 timer.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@19545 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
---
 src/msw/utils.cpp | 28 ++++++++++++++++------------
 1 file changed, 16 insertions(+), 12 deletions(-)

diff --git a/src/msw/utils.cpp b/src/msw/utils.cpp
index 986e6602bf..2b1fc04bb0 100644
--- a/src/msw/utils.cpp
+++ b/src/msw/utils.cpp
@@ -876,7 +876,7 @@ bool wxShell(const wxString& command)
     return wxExecute(cmd, wxEXEC_SYNC) == 0;
 }
 
-// Shutdown or reboot the PC 
+// Shutdown or reboot the PC
 bool wxShutdown(wxShutdownFlags wFlags)
 {
 #ifdef __WIN32__
@@ -884,27 +884,27 @@ bool wxShutdown(wxShutdownFlags wFlags)
 
     if ( wxGetOsVersion(NULL, NULL) == wxWINDOWS_NT ) // if is NT or 2K
     {
-        // Get a token for this process. 
-        HANDLE hToken; 
+        // Get a token for this process.
+        HANDLE hToken;
         bOK = ::OpenProcessToken(GetCurrentProcess(),
                                  TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY,
                                  &hToken) != 0;
         if ( bOK )
         {
-            TOKEN_PRIVILEGES tkp; 
+            TOKEN_PRIVILEGES tkp;
 
-            // Get the LUID for the shutdown privilege. 
+            // Get the LUID for the shutdown privilege.
             ::LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,
-                                   &tkp.Privileges[0].Luid); 
+                                   &tkp.Privileges[0].Luid);
 
-            tkp.PrivilegeCount = 1;  // one privilege to set    
-            tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED; 
+            tkp.PrivilegeCount = 1;  // one privilege to set
+            tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
 
-            // Get the shutdown privilege for this process. 
+            // Get the shutdown privilege for this process.
             ::AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,
-                                    (PTOKEN_PRIVILEGES)NULL, 0); 
+                                    (PTOKEN_PRIVILEGES)NULL, 0);
 
-            // Cannot test the return value of AdjustTokenPrivileges. 
+            // Cannot test the return value of AdjustTokenPrivileges.
             bOK = ::GetLastError() == ERROR_SUCCESS;
         }
     }
@@ -927,7 +927,7 @@ bool wxShutdown(wxShutdownFlags wFlags)
                 return FALSE;
         }
 
-        bOK = ::ExitWindowsEx(EWX_SHUTDOWN | EWX_FORCE | EWX_REBOOT, 0) != 0; 
+        bOK = ::ExitWindowsEx(EWX_SHUTDOWN | EWX_FORCE | EWX_REBOOT, 0) != 0;
     }
 
     return bOK;
@@ -1108,6 +1108,8 @@ void wxUsleep(unsigned long milliseconds)
 #else // !Win32
     if (gs_inTimer)
         return;
+    if (miliseconds <= 0)
+        return;
 
     wxTheSleepTimer = new wxSleepTimer;
     gs_inTimer = TRUE;
@@ -1126,6 +1128,8 @@ void wxSleep(int nSecs)
 {
     if (gs_inTimer)
         return;
+    if (nSecs <= 0)
+         return;
 
     wxTheSleepTimer = new wxSleepTimer;
     gs_inTimer = TRUE;
-- 
2.45.2