1 files changed, 20 insertions, 8 deletions
diff --git a/src/gui/kernel/qcocoaview_mac.mm b/src/gui/kernel/qcocoaview_mac.mm
index 1cbc960..838f751 100644
--- a/src/gui/kernel/qcocoaview_mac.mm
+++ b/src/gui/kernel/qcocoaview_mac.mm
@@ -791,10 +791,22 @@ extern "C" {
     bool wheelOK = false;
     Qt::KeyboardModifiers keyMods = qt_cocoaModifiers2QtModifiers([theEvent modifierFlags]);
 
+    QWidget *widgetToGetMouse = qwidget;
+    if (widgetToGetMouse->testAttribute(Qt::WA_TransparentForMouseEvents)) {
+        // Simulate passing the event through since Cocoa doesn't do that for us.
+        // Start by building a tree up.
+        NSView *candidateView = [self viewUnderTransparentForMouseView:self
+                                                       widget:widgetToGetMouse
+                                                       withWindowPoint:windowPoint];
+        if (candidateView != nil) {
+            widgetToGetMouse = QWidget::find(WId(candidateView));
+        }
+    }
+
     // Mouse wheel deltas seem to tick in at increments of 0.1. Qt widgets
-    // expect the delta to be a multiple of 120. 
+    // expect the delta to be a multiple of 120.
     const int ScrollFactor = 10 * 120;
-    //                                              The qMax(...) factor reduces the 
+    //                                              The qMax(...) factor reduces the
     //                                              acceleration for large wheel deltas.
     int deltaX = [theEvent deltaX] * ScrollFactor * qMax(0.6, 1.1 - qAbs([theEvent deltaX]));
     int deltaY = [theEvent deltaY] * ScrollFactor * qMax(0.6, 1.1 - qAbs([theEvent deltaY]));
@@ -802,10 +814,10 @@ extern "C" {
 
     if (deltaX != 0) {
         QWheelEvent qwe(qlocal, qglobal, deltaX, buttons, keyMods, Qt::Horizontal);
-        qt_sendSpontaneousEvent(qwidget, &qwe);
+        qt_sendSpontaneousEvent(widgetToGetMouse, &qwe);
         wheelOK = qwe.isAccepted();
         if (!wheelOK && QApplicationPrivate::focus_widget
-            && QApplicationPrivate::focus_widget != qwidget) {
+            && QApplicationPrivate::focus_widget != widgetToGetMouse) {
             QWheelEvent qwe2(QApplicationPrivate::focus_widget->mapFromGlobal(qglobal), qglobal,
                              deltaX, buttons, keyMods, Qt::Horizontal);
             qt_sendSpontaneousEvent(QApplicationPrivate::focus_widget, &qwe2);
@@ -815,10 +827,10 @@ extern "C" {
 
     if (deltaY) {
         QWheelEvent qwe(qlocal, qglobal, deltaY, buttons, keyMods, Qt::Vertical);
-        qt_sendSpontaneousEvent(qwidget, &qwe);
+        qt_sendSpontaneousEvent(widgetToGetMouse, &qwe);
         wheelOK = qwe.isAccepted();
         if (!wheelOK && QApplicationPrivate::focus_widget
-            && QApplicationPrivate::focus_widget != qwidget) {
+            && QApplicationPrivate::focus_widget != widgetToGetMouse) {
             QWheelEvent qwe2(QApplicationPrivate::focus_widget->mapFromGlobal(qglobal), qglobal,
                              deltaY, buttons, keyMods, Qt::Vertical);
             qt_sendSpontaneousEvent(QApplicationPrivate::focus_widget, &qwe2);
@@ -830,10 +842,10 @@ extern "C" {
         // Qt doesn't explicitly support wheels with a Z component. In a misguided attempt to
         // try to be ahead of the pack, I'm adding this extra value.
         QWheelEvent qwe(qlocal, qglobal, deltaZ, buttons, keyMods, (Qt::Orientation)3);
-        qt_sendSpontaneousEvent(qwidget, &qwe);
+        qt_sendSpontaneousEvent(widgetToGetMouse, &qwe);
         wheelOK = qwe.isAccepted();
         if (!wheelOK && QApplicationPrivate::focus_widget
-            && QApplicationPrivate::focus_widget != qwidget) {
+            && QApplicationPrivate::focus_widget != widgetToGetMouse) {
             QWheelEvent qwe2(QApplicationPrivate::focus_widget->mapFromGlobal(qglobal), qglobal,
                              deltaZ, buttons, keyMods, (Qt::Orientation)3);
             qt_sendSpontaneousEvent(QApplicationPrivate::focus_widget, &qwe2);