fix layout problems

examples/example1/example1.visualdproj

@@ -72,7 +72,7 @@
   <debuglevel>0</debuglevel>
   <debugids />
   <versionlevel>0</versionlevel>
-  <versionids>Unicode  USE_FREETYPE USE_SDL USE_OPENGL</versionids>
+  <versionids>Unicode  USE_FREETYPE USE_OPENGL</versionids>
   <dump_source>0</dump_source>
   <mapverbosity>3</mapverbosity>
   <createImplib>0</createImplib>

src/dlangui/core/events.d

@@ -505,6 +505,13 @@ struct ButtonDetails {
 
     static final long DOUBLE_CLICK_THRESHOLD_MS = 200;
 
+
+    void reset() {
+        _downTs = _upTs = 0;
+        _downFlags = 0;
+        _downX = _downY = 0;
+    }
+
 	/// update for button down
 	void down(short x, short y, ushort flags) {
         //Log.d("Button down ", x, ",", y, " _downTs=", _downTs, " _upTs=", _upTs);

src/dlangui/platforms/windows/winapp.d

@@ -556,6 +556,15 @@ class Win32Window : Window {
 	protected ButtonDetails _mbutton;
 	protected ButtonDetails _rbutton;
 
+    private void updateButtonsState(uint flags) {
+        if (!(flags & MK_LBUTTON) && _lbutton.isDown)
+            _lbutton.reset();
+        if (!(flags & MK_MBUTTON) && _mbutton.isDown)
+            _mbutton.reset();
+        if (!(flags & MK_RBUTTON) && _rbutton.isDown)
+            _rbutton.reset();
+    }
+
     private bool _mouseTracking;
 	private bool onMouse(uint message, uint flags, short x, short y) {
 		debug(DebugMouseEvents) Log.d("Win32 Mouse Message ", message, " flags=", flags, " x=", x, " y=", y);
@@ -566,6 +575,7 @@ class Win32Window : Window {
         switch (message) {
             case WM_MOUSEMOVE:
                 action = MouseAction.Move;
+                updateButtonsState(flags);
                 break;
             case WM_LBUTTONDOWN:
                 action = MouseAction.ButtonDown;

src/dlangui/widgets/layouts.d

@@ -413,6 +413,17 @@ class ResizerWidget : Widget {
         if (event.action == MouseAction.FocusOut && _dragging) {
             return true;
         }
+        if ((event.action == MouseAction.ButtonUp && event.button == MouseButton.Left) || (!event.lbutton.isDown && _dragging)) {
+            resetState(State.Pressed);
+            if (_dragging) {
+                //sendScrollEvent(ScrollAction.SliderReleased, _position);
+                _dragging = false;
+				if (resizeListener.assigned) {
+					resizeListener(this, ResizerEventType.EndDragging, _orientation == Orientation.Vertical ? event.y : event.x);
+				}
+            }
+            return true;
+        }
         if (event.action == MouseAction.Move && _dragging) {
             int delta = _orientation == Orientation.Vertical ? event.y - _dragStart.y : event.x - _dragStart.x;
 			if (resizeListener.assigned) {
@@ -459,17 +470,6 @@ class ResizerWidget : Widget {
             //onIndicatorDragging(_dragStartPosition, position);
             return true;
         }
-        if (event.action == MouseAction.ButtonUp && event.button == MouseButton.Left) {
-            resetState(State.Pressed);
-            if (_dragging) {
-                //sendScrollEvent(ScrollAction.SliderReleased, _position);
-                _dragging = false;
-				if (resizeListener.assigned) {
-					resizeListener(this, ResizerEventType.EndDragging, _orientation == Orientation.Vertical ? event.y : event.x);
-				}
-            }
-            return true;
-        }
         if (event.action == MouseAction.Move && trackHover) {
             if (!(state & State.Hovered)) {
                 Log.d("Hover ", id);