Create the flush thread on first use

Some processes just return from the entry point; this only exits the
thread, not the process.  It seems that when ANSICON created its flush
thread in DllMain, that became the primary thread, so when the entry
point returned the process was still waiting for the flush thread to
exit.  Creating the flush thread the first time it is used avoids this
problem, letting the process exit.

ANSI.c

@@ -193,6 +193,9 @@
     flush and invalidate the cache on CloseHandle;
     make IsConsoleHandle a critical section, for multithreaded processes;
     use APIConsole for all console functions (needed for Windows 10).
+
+  v1.83, 16 February, 2018:
+    create the flush thread on first use.
 */
 
 #include "ansicon.h"
@@ -212,7 +215,7 @@ WORD	orgattr;		// original attributes
 DWORD	orgmode;		// original mode
 CONSOLE_CURSOR_INFO orgcci;	// original cursor state
 HANDLE	hHeap;			// local memory heap
-HANDLE	hBell;
+HANDLE	hBell, hFlush;
 
 #define CACHE	5
 struct Cache
@@ -2528,6 +2531,8 @@ ParseAndPrintString( HANDLE hDev,
     {
       LARGE_INTEGER due;
       due.QuadPart = -150000;
+      if (hFlush == NULL)
+	hFlush = CreateThread( NULL, 4096, FlushThread, NULL, 0, NULL );
       SetWaitableTimer( hFlushTimer, &due, 0, NULL, NULL, FALSE );
     }
   }
@@ -3897,7 +3902,6 @@ BOOL WINAPI DllMain( HINSTANCE hInstance, DWORD dwReason, LPVOID lpReserved )
 
     InitializeCriticalSection( &CritSect );
     hFlushTimer = CreateWaitableTimer( NULL, FALSE, NULL );
-    CreateThread( NULL, 4096, FlushThread, NULL, 0, NULL );
   }
   else if (dwReason == DLL_PROCESS_DETACH)
   {

ansicon.c

@@ -91,7 +91,7 @@
     use -pu to unload from the parent.
 */
 
-#define PDATE L"13 February, 2018"
+#define PDATE L"16 February, 2018"
 
 #include "ansicon.h"
 #include "version.h"

readme.txt

@@ -3,7 +3,7 @@
 
 			 Copyright 2005-2018 Jason Hood
 
-			    Version 1.82.  Freeware
+			    Version 1.83.  Freeware
 
 
 Description
@@ -339,6 +339,9 @@ Version History
 
     Legend: + added, - bug-fixed, * changed.
 
+    1.83 - 16 February, 2018:
+    - create the flush thread on first use.
+
     1.82 - 13 February, 2018:
     - add ANSICON_WRAP for programs that expect the wrap at right margin;
     - make IsConsoleHandle a critical section, for multithreaded processes;
@@ -610,4 +613,4 @@ Distribution
 
 
 ==============================
-Jason Hood, 13 February, 2018.
+Jason Hood, 16 February, 2018.

version.h

@@ -2,11 +2,11 @@
   version.h - Version defines.
 */
 
-#define PVERS	L"1.82"         // wide string
-#define PVERSA	 "1.82"         // ANSI string (windres 2.16.91 didn't like L)
-#define PVERE	L"182"          // wide environment string
-#define PVEREA	 "182"          // ANSI environment string
-#define PVERB	1,8,2,0 	// binary (resource)
+#define PVERS	L"1.83"         // wide string
+#define PVERSA	 "1.83"         // ANSI string (windres 2.16.91 didn't like L)
+#define PVERE	L"183"          // wide environment string
+#define PVEREA	 "183"          // ANSI environment string
+#define PVERB	1,8,3,0 	// binary (resource)
 
 #ifdef _WIN64
 # define BITS L"64"