Make it run with Qt6

This is a huge commit. Changes:
* Obviously, make it compile
* Make it run (only scarcely tested)
* get rid of most of clang's warnings

Let's see what surprises are in store...

1 files changed, 3 insertions, 3 deletions

diff --git a/shemov.cpp b/shemov.cpp
index 119a6aa..cf20386 100644
--- a/shemov.cpp
+++ b/shemov.cpp
@@ -111,7 +111,7 @@ SheMov::SheMov(QWidget *parent, Qt::WindowFlags flags) : QMainWindow(parent, fla
     mFileWidget = new FSWidget;
     mTab->addTab(mFileWidget, tr("FS"));
     connect(mFileWidget, &FSWidget::message, this, &SheMov::statusbarMessage);
-    connect(mFileWidget, &FSWidget::selectionChanged, [=](int count, qint64 size, qint64 duration) {
+    connect(mFileWidget, &FSWidget::selectionChanged, this, [=](int count, qint64 size, qint64 duration) {
        updateSelectedCount(count);
        setSize(size);
        setDuration(duration, false);
@@ -293,9 +293,9 @@ void SheMov::setSize(qint64 size){
     QString selectedSize = l.toString(size);
     QString freeSize = l.toString(free);
     if(size < DVDSIZE){
-        val = QString("<span style=\"color:%1\">%2 (%3)</span>").arg(QColor(Qt::green).name()).arg(selectedSize).arg(freeSize);
+        val = QString("<span style=\"color:%1\">%2 (%3)</span>").arg(QColor(Qt::green).name(), selectedSize, freeSize);
 	}else{
-        val = QString("<span style=\"color:%1\">%2 (%3)</span>").arg(QColor(Qt::red).name()).arg(selectedSize).arg(freeSize);
+        val = QString("<span style=\"color:%1\">%2 (%3)</span>").arg(QColor(Qt::red).name(), selectedSize, freeSize);
 	}
 	mSelectedSize->setText(val);
 }