Don't hide "OK" on message timer, just disable it

src/debug_functions.cpp

@@ -1,7 +1,10 @@
 #include <QCoreApplication>
+#include <QDialogButtonBox>
 #include <QElapsedTimer>
 #include <QMessageBox>
+#include <QPushButton>
 #include <QTimer>
+
 #include <functional>
 
 #include "debug_functions.h"
@@ -22,16 +25,38 @@ void call_error(QString p_message)
 
 void call_notice(QString p_message)
 {
-  QMessageBox *msgBox = new QMessageBox;
+  auto *msgBox = new QMessageBox;
 
   msgBox->setAttribute(Qt::WA_DeleteOnClose);
   msgBox->setText(p_message);
   msgBox->setWindowTitle(
       QCoreApplication::translate("debug_functions", "Notice"));
 
-  msgBox->setStandardButtons(QMessageBox::NoButton);
+  msgBox->setStandardButtons(QMessageBox::Ok);
+  msgBox->setDefaultButton(QMessageBox::Ok);
+  msgBox->defaultButton()->setEnabled(false);
 
-  QTimer::singleShot(3000, msgBox, std::bind(&QMessageBox::setStandardButtons,msgBox,QMessageBox::Ok));
+  QTimer intervalTimer;
+  intervalTimer.setInterval(1000);
+
+  int counter = 3;
+  const auto updateCounter = [msgBox, &counter] {
+    if (counter <= 0)
+      return;
+    msgBox->defaultButton()->setText(
+        QString("%1 (%2)").arg(QDialogButtonBox::tr("OK")).arg(counter));
+    counter--;
+  };
+
+  QObject::connect(&intervalTimer, &QTimer::timeout, msgBox, updateCounter);
+  intervalTimer.start();
+  updateCounter();
+
+  QTimer::singleShot(3000, msgBox, [msgBox, &intervalTimer] {
+    msgBox->defaultButton()->setEnabled(true);
+    msgBox->defaultButton()->setText(QDialogButtonBox::tr("OK"));
+    intervalTimer.stop();
+  });
 
   msgBox->exec();