Improved: Updated to Visual Studio 2019 and Qt 5.15.2. Running Equalizer APO requires Universal CRT now, which means that Windows versions before 10 may need additional Windows updates or the Visual C++ Redistributable for Visual Studio 2015 - 2019 needs to be installed (installer provides assistance).

Editor/widgets/ResizingLineEdit.cpp

@@ -40,8 +40,8 @@ QSize ResizingLineEdit::sizeHint() const
 	QSize originalSize = QLineEdit::sizeHint();
 
 	QFontMetrics metrics = fontMetrics();
-	QSize contentSize(metrics.width(text()), metrics.height());
-	QStyleOptionFrameV2 opt;
+	QSize contentSize(metrics.size(0, text()));
+	QStyleOptionFrame opt;
 	initStyleOption(&opt);
 
 	QSize size = style()->sizeFromContents(QStyle::CT_LineEdit, &opt, contentSize, this);