Fix warnings in datavisualization examples

Injection of parameters into signal handlers
is deprecated. So those signal handlers using
parameters needed to be changed to use formal
parameters instead. Uncommented the theme in
qmlperf manual test. Added missing space to
qmlgradient manual test.

Pick-to: 6.1
Fixes: QTBUG-92995
Change-Id: I5999df841c077be63a9f01d71188c07574b2669e
Reviewed-by: Tomi Korpipää <tomi.korpipaa@qt.io>

1 files changed, 4 insertions, 6 deletions

diff --git a/examples/datavisualization/qmlspectrogram/qml/qmlspectrogram/main.qml b/examples/datavisualization/qmlspectrogram/qml/qmlspectrogram/main.qml
index 3e7478ef..35143179 100644
--- a/examples/datavisualization/qmlspectrogram/qml/qmlspectrogram/main.qml
+++ b/examples/datavisualization/qmlspectrogram/qml/qmlspectrogram/main.qml
@@ -221,12 +221,10 @@ Window {
             Layout.fillHeight: true
             text: "Toggle axis grid on top"
             onClicked: {
-                onClicked: {
-                    if (surfaceGraph.flipHorizontalGrid === true) {
-                        surfaceGraph.flipHorizontalGrid = false;
-                    } else {
-                        surfaceGraph.flipHorizontalGrid = true;
-                    }
+                if (surfaceGraph.flipHorizontalGrid === true) {
+                    surfaceGraph.flipHorizontalGrid = false;
+                } else {
+                    surfaceGraph.flipHorizontalGrid = true;
                 }
             }
         }