Fix QMessageBox deprecations.

Qt6 complains about the versions of the static function signatures
we’re using for generating various QMessageBoxes.

Except for the “Show plaintext board” dialog, which seems to
be having some “special” issues in Qt6.

1 files changed, 14 insertions, 11 deletions

diff --git a/quacker/letterbox.cpp b/quacker/letterbox.cpp
index 91c2ad9..2df5e55 100644
--- a/quacker/letterbox.cpp
+++ b/quacker/letterbox.cpp
@@ -65,16 +65,17 @@ bool Letterbox::tryToClose()
 	{
 		switch (askToSave())
 		{
-		case 0:
+		case QMessageBox::Save:
 			qApp->processEvents();
 			writeFile();
 
 			// fall through
 
-		case 1:
+		case QMessageBox::Discard:
 			return true;
 
-		case 2:
+		case QMessageBox::Cancel:
+		default:
 			return false;
 		}
 	}
@@ -115,13 +116,14 @@ void Letterbox::open()
 	{
 		switch (askToSave())
 		{
-		case 0:
+		case QMessageBox::Save:
 			writeFile();
 
-		case 1:
+		case QMessageBox::Discard:
 			break;
 
-		case 2:
+		case QMessageBox::Cancel:
+		default:
 			return;
 		}
 	}
@@ -145,13 +147,14 @@ void Letterbox::openParticularFile(const QString &filename)
 		{
 			switch (askToSave())
 			{
-				case 0:
+				case QMessageBox::Save:
 					writeFile();
 
-				case 1:
+				case QMessageBox::Discard:
 					break;
 
-				case 2:
+				case QMessageBox::Cancel:
+				default:
 					return;
 			}
 		}
@@ -186,9 +189,9 @@ bool Letterbox::dictCheck()
 	return true;
 }
 
-int Letterbox::askToSave()
+QMessageBox::StandardButton Letterbox::askToSave()
 {
-	return QMessageBox::warning(this, tr("Unsaved Results - Quackle Letterbox"), tr("There are unsaved results in the current Letterbox list. Save them?"), tr("&Save"), tr("&Discard"), tr("&Cancel"), 0, 2);
+	return QMessageBox::warning(this, tr("Unsaved Results - Quackle Letterbox"), tr("There are unsaved results in the current Letterbox list. Save them?"), QMessageBox::Save | QMessageBox::Discard | QMessageBox::Cancel, QMessageBox::Save);
 }
 
 void Letterbox::generateList()