Better indication of the item-selection is in SVN r4804. The only (quick) solution I found was setting a style-sheet on the QListWidget, using 'palette(dark)' for the item's background:

Code:
rene@thunder:~/src/qmc2> svn diff -r 4803:4804
Index: embedderopt.cpp
===================================================================
--- embedderopt.cpp     (revision 4803)
+++ embedderopt.cpp     (revision 4804)
@@ -33,6 +33,8 @@
   checkBoxNativeSnapshotResolution->setChecked(qmc2Config->value(QMC2_FRONTEND_PREFIX + "Embedder/NativeSnapshotResolution", true).toBool());
   spinBoxZoom->setValue(qmc2Config->value(QMC2_FRONTEND_PREFIX + "Embedder/ItemZoom", 100).toInt());
 
+  listWidgetSnapshots->setStyleSheet(listWidgetSnapshots->styleSheet() + " QListView::item:selected { background-color: palette(dark); }");
+
   adjustIconSizes();
 }



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