2 files changed, 14 insertions, 2 deletions
diff --git a/src/plugins/platforms/qnx/qqnxrasterwindow.cpp b/src/plugins/platforms/qnx/qqnxrasterwindow.cpp
index b075690e3d..7f11de228e 100644
--- a/src/plugins/platforms/qnx/qqnxrasterwindow.cpp
+++ b/src/plugins/platforms/qnx/qqnxrasterwindow.cpp
@@ -178,7 +178,7 @@ void QQnxRasterWindow::adjustBufferSize()
 {
     // When having a raster window we don't need any buffers, since
     // Qt will draw to the parent TLW backing store.
-    const QSize windowSize = window()->parent() ? QSize(1,1) : window()->size();
+    const QSize windowSize = window()->parent() ? QSize(0,0) : window()->size();
     if (windowSize != bufferSize())
         setBufferSize(windowSize);
 }
@@ -194,6 +194,13 @@ void QQnxRasterWindow::resetBuffers()
     m_currentBufferIndex = -1;
     m_previousDirty = QRegion();
     m_scrolled = QRegion();
+    if (window()->parent() && bufferSize() == QSize(1,1)) {
+        // If we have a parent then we're not really rendering.  But if we don't render we'll
+        // be invisible and any children won't show up.  This should be harmless since we're
+        // rendering into a 1x1 window that has transparency set to discard.
+        renderBuffer();
+        post(QRegion(0,0,1,1));
+    }
 }
 
 void QQnxRasterWindow::blitPreviousToCurrent(const QRegion &region, int dx, int dy, bool flush)
diff --git a/src/plugins/platforms/qnx/qqnxwindow.cpp b/src/plugins/platforms/qnx/qqnxwindow.cpp
index e04f16db92..f4e6ca9804 100644
--- a/src/plugins/platforms/qnx/qqnxwindow.cpp
+++ b/src/plugins/platforms/qnx/qqnxwindow.cpp
@@ -386,7 +386,12 @@ void QQnxWindow::setBufferSize(const QSize &size)
     // Set the transparency. According to QNX technical support, setting the window
     // transparency property should always be done *after* creating the window
     // buffers in order to guarantee the property is paid attention to.
-    if (window()->requestedFormat().alphaBufferSize() == 0) {
+    if (size.isEmpty()) {
+        // We can't create 0x0 buffers and instead make them 1x1.  But to allow these windows to
+        // still be 'visible' (thus allowing their children to be visible), we need to allow
+        // them to be posted but still not show up.
+        val[0] = SCREEN_TRANSPARENCY_DISCARD;
+    } else if (window()->requestedFormat().alphaBufferSize() == 0) {
         // To avoid overhead in the composition manager, disable blending
         // when the underlying window buffer doesn't have an alpha channel.
         val[0] = SCREEN_TRANSPARENCY_NONE;