Clear QPixmapCache if style/palette changes (Qt should do this really)

qrenderdoc/Windows/MainWindow.cpp

@@ -28,6 +28,7 @@
 #include <QFileInfo>
 #include <QMimeData>
 #include <QMouseEvent>
+#include <QPixmapCache>
 #include <QProgressBar>
 #include <QProgressDialog>
 #include <QToolButton>
@@ -1690,6 +1691,12 @@ void MainWindow::closeEvent(QCloseEvent *event)
   SaveLayout(0);
 }
 
+void MainWindow::changeEvent(QEvent *event)
+{
+  if(event->type() == QEvent::PaletteChange || event->type() == QEvent::StyleChange)
+    QPixmapCache::clear();
+}
+
 QString MainWindow::dragFilename(const QMimeData *mimeData)
 {
   if(mimeData->hasUrls())