src/corelib: Remove QT_WA and non-Unicode code paths, dropping Win9x and NT support

Also: QString::fromUtf16() -> QString::fromWCharArray()
      WCHAR & TCHAR -> wchar_t
      LPTSTR/LPCTSTR -> LPWSTR/LPCWSTR
      Documentation update

Merge-request: 604
Reviewed-by: Marius Storm-Olsen <marius@trolltech.com>

3 files changed, 10 insertions, 48 deletions

diff --git a/src/corelib/thread/qmutex_win.cpp b/src/corelib/thread/qmutex_win.cpp
index f2022a5..1d247fc 100644
--- a/src/corelib/thread/qmutex_win.cpp
+++ b/src/corelib/thread/qmutex_win.cpp
@@ -50,19 +50,7 @@ QT_BEGIN_NAMESPACE
 QMutexPrivate::QMutexPrivate(QMutex::RecursionMode mode)
     : recursive(mode == QMutex::Recursive), contenders(0), lastSpinCount(0), owner(0), count(0)
 {
-    if (QSysInfo::WindowsVersion == 0) {
-        // mutex was created before initializing WindowsVersion. this
-        // can happen when creating the resource file engine handler,
-        // for example. try again with just the A version
-#ifdef Q_OS_WINCE
-        event = CreateEventW(0, FALSE, FALSE, 0);
-#else
-        event = CreateEventA(0, FALSE, FALSE, 0);
-#endif
-    } else {
-        event = QT_WA_INLINE(CreateEventW(0, FALSE, FALSE, 0),
-                             CreateEventA(0, FALSE, FALSE, 0));
-    }
+    event = CreateEvent(0, FALSE, FALSE, 0);
     if (!event)
         qWarning("QMutexPrivate::QMutexPrivate: Cannot create event");
 }
diff --git a/src/corelib/thread/qthread_win.cpp b/src/corelib/thread/qthread_win.cpp
index b5bdba3..6c24784 100644
--- a/src/corelib/thread/qthread_win.cpp
+++ b/src/corelib/thread/qthread_win.cpp
@@ -163,8 +163,7 @@ void qt_watch_adopted_thread(const HANDLE adoptedThreadHandle, QThread *qthread)
     // Start watcher thread if it is not already running.
     if (qt_adopted_thread_watcher_handle == 0) {
         if (qt_adopted_thread_wakeup == 0) {
-            qt_adopted_thread_wakeup = QT_WA_INLINE(CreateEventW(0, false, false, 0),
-                                                    CreateEventA(0, false, false, 0));
+            qt_adopted_thread_wakeup = CreateEvent(0, false, false, 0);
             qt_adopted_thread_handles.prepend(qt_adopted_thread_wakeup);
         }
 
@@ -364,11 +363,10 @@ int QThread::idealThreadCount()
 void QThread::yieldCurrentThread()
 {
 #ifndef Q_OS_WINCE
-    if (QSysInfo::WindowsVersion & QSysInfo::WV_NT_based)
-        SwitchToThread();
-    else
+    SwitchToThread();
+#else
+    ::Sleep(0);
 #endif
-        ::Sleep(0);
 }
 
 void QThread::sleep(unsigned long secs)
@@ -419,17 +417,11 @@ void QThread::start(Priority priority)
         return;
     }
 
-    // Since Win 9x will have problems if the priority is idle or time critical
-    // we have to use the closest one instead
     int prio;
     d->priority = priority;
     switch (d->priority) {
     case IdlePriority:
-        if (QSysInfo::WindowsVersion & QSysInfo::WV_DOS_based) {
-            prio = THREAD_PRIORITY_LOWEST;
-        } else {
-            prio = THREAD_PRIORITY_IDLE;
-        }
+        prio = THREAD_PRIORITY_IDLE;
         break;
 
     case LowestPriority:
@@ -453,11 +445,7 @@ void QThread::start(Priority priority)
         break;
 
     case TimeCriticalPriority:
-        if (QSysInfo::WindowsVersion & QSysInfo::WV_DOS_based) {
-            prio = THREAD_PRIORITY_HIGHEST;
-        } else {
-            prio = THREAD_PRIORITY_TIME_CRITICAL;
-        }
+        prio = THREAD_PRIORITY_TIME_CRITICAL;
         break;
 
     case InheritPriority:
@@ -563,17 +551,11 @@ void QThread::setPriority(Priority priority)
 
     // copied from start() with a few modifications:
 
-    // Since Win 9x will have problems if the priority is idle or time critical
-    // we have to use the closest one instead
     int prio;
     d->priority = priority;
     switch (d->priority) {
     case IdlePriority:
-        if (QSysInfo::WindowsVersion & QSysInfo::WV_DOS_based) {
-            prio = THREAD_PRIORITY_LOWEST;
-        } else {
-            prio = THREAD_PRIORITY_IDLE;
-        }
+        prio = THREAD_PRIORITY_IDLE;
         break;
 
     case LowestPriority:
@@ -597,11 +579,7 @@ void QThread::setPriority(Priority priority)
         break;
 
     case TimeCriticalPriority:
-        if (QSysInfo::WindowsVersion & QSysInfo::WV_DOS_based) {
-            prio = THREAD_PRIORITY_HIGHEST;
-        } else {
-            prio = THREAD_PRIORITY_TIME_CRITICAL;
-        }
+        prio = THREAD_PRIORITY_TIME_CRITICAL;
         break;
 
     case InheritPriority:
diff --git a/src/corelib/thread/qwaitcondition_win.cpp b/src/corelib/thread/qwaitcondition_win.cpp
index 9129fb6..b0146d2 100644
--- a/src/corelib/thread/qwaitcondition_win.cpp
+++ b/src/corelib/thread/qwaitcondition_win.cpp
@@ -64,11 +64,7 @@ class QWaitConditionEvent
 public:
     inline QWaitConditionEvent() : priority(0), wokenUp(false)
     {
-        QT_WA ({
-            event = CreateEvent(NULL, TRUE, FALSE, NULL);
-        }, {
-            event = CreateEventA(NULL, TRUE, FALSE, NULL);
-        });
+        event = CreateEvent(NULL, TRUE, FALSE, NULL);
     }
     inline ~QWaitConditionEvent() { CloseHandle(event); }
     int priority;