QWindowsCursor: Add API for determining the cursor state.

Detect the 'suppressed' state new in Windows 8.

Change-Id: I0faa994aa7b91869cedba36b777b1784818efcce
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>

2 files changed, 23 insertions, 0 deletions

diff --git a/src/plugins/platforms/windows/qwindowscursor.cpp b/src/plugins/platforms/windows/qwindowscursor.cpp
index e0d7d0c919..d574730328 100644
--- a/src/plugins/platforms/windows/qwindowscursor.cpp
+++ b/src/plugins/platforms/windows/qwindowscursor.cpp
@@ -465,6 +465,22 @@ QPoint QWindowsCursor::mousePosition()
     return QPoint(p.x, p.y);
 }
 
+QWindowsCursor::CursorState QWindowsCursor::cursorState()
+{
+#ifndef Q_OS_WINCE
+    enum { cursorShowing = 0x1, cursorSuppressed = 0x2 }; // Windows 8: CURSOR_SUPPRESSED
+    CURSORINFO cursorInfo;
+    cursorInfo.cbSize = sizeof(CURSORINFO);
+    if (GetCursorInfo(&cursorInfo)) {
+        if (cursorInfo.flags & CursorShowing)
+            return CursorShowing;
+        if (cursorInfo.flags & cursorSuppressed)
+            return CursorSuppressed;
+    }
+#endif // !Q_OS_WINCE
+    return CursorHidden;
+}
+
 void QWindowsCursor::setPos(const QPoint &pos)
 {
     SetCursorPos(pos.x(), pos.y());
diff --git a/src/plugins/platforms/windows/qwindowscursor.h b/src/plugins/platforms/windows/qwindowscursor.h
index b366d9a06a..31da4e367d 100644
--- a/src/plugins/platforms/windows/qwindowscursor.h
+++ b/src/plugins/platforms/windows/qwindowscursor.h
@@ -93,6 +93,12 @@ private:
 class QWindowsCursor : public QPlatformCursor
 {
 public:
+    enum CursorState {
+        CursorShowing,
+        CursorHidden,
+        CursorSuppressed // Cursor suppressed by touch interaction (Windows 8).
+    };
+
     QWindowsCursor() {}
 
     virtual void changeCursor(QCursor * widgetCursor, QWindow * widget);
@@ -102,6 +108,7 @@ public:
     static HCURSOR createPixmapCursor(const QPixmap &pixmap, int hotX, int hotY);
     static HCURSOR createSystemCursor(const QCursor &c);
     static QPoint mousePosition();
+    static CursorState cursorState();
 
     QWindowsWindowCursor standardWindowCursor(Qt::CursorShape s = Qt::ArrowCursor);
     QWindowsWindowCursor pixmapWindowCursor(const QCursor &c);