main: Globally disable the "?" button on dialogs (#6263)

Sets the AA_DisableWindowContextHelpButton attribute to disable this useless button globally. This is disabled by default on Qt6.

src/citra_qt/cheats.cpp

@@ -17,7 +17,6 @@ CheatDialog::CheatDialog(QWidget* parent)
     : QDialog(parent), ui(std::make_unique<Ui::CheatDialog>()) {
     // Setup gui control settings
     ui->setupUi(this);
-    setWindowFlags(windowFlags() & ~Qt::WindowContextHelpButtonHint);
     ui->tableCheats->setColumnWidth(0, 30);
     ui->tableCheats->setColumnWidth(2, 85);
     ui->tableCheats->horizontalHeader()->setSectionResizeMode(0, QHeaderView::Fixed);

src/citra_qt/configuration/configure_dialog.cpp

@@ -20,8 +20,6 @@ ConfigureDialog::ConfigureDialog(QWidget* parent, HotkeyRegistry& registry, bool
 
     PopulateSelectionList();
 
-    setWindowFlags(windowFlags() & ~Qt::WindowContextHelpButtonHint);
-
     connect(ui->uiTab, &ConfigureUi::LanguageChanged, this, &ConfigureDialog::OnLanguageChanged);
     connect(ui->selectorList, &QListWidget::itemSelectionChanged, this,
             &ConfigureDialog::UpdateVisibleTabs);

src/citra_qt/configuration/configure_per_game.cpp

@@ -41,8 +41,6 @@ ConfigurePerGame::ConfigurePerGame(QWidget* parent, u64 title_id_, const QString
 
     setFocusPolicy(Qt::ClickFocus);
     setWindowTitle(tr("Properties"));
-    // remove Help question mark button from the title bar
-    setWindowFlags(windowFlags() & ~Qt::WindowContextHelpButtonHint);
 
     scene = new QGraphicsScene;
     ui->icon_view->setScene(scene);

src/citra_qt/debugger/profiler.cpp

@@ -50,9 +50,8 @@ MicroProfileDialog::MicroProfileDialog(QWidget* parent) : QWidget(parent, Qt::Di
     setObjectName(QStringLiteral("MicroProfile"));
     setWindowTitle(tr("MicroProfile"));
     resize(1000, 600);
-    // Remove the "?" button from the titlebar and enable the maximize button
-    setWindowFlags((windowFlags() & ~Qt::WindowContextHelpButtonHint) |
-                   Qt::WindowMaximizeButtonHint);
+    // Enable the maximize button
+    setWindowFlags(windowFlags() | Qt::WindowMaximizeButtonHint);
 
 #if MICROPROFILE_ENABLED
 

src/citra_qt/main.cpp

@@ -2644,6 +2644,10 @@ int main(int argc, char* argv[]) {
 #ifdef __APPLE__
     std::string bin_path = FileUtil::GetBundleDirectory() + DIR_SEP + "..";
     chdir(bin_path.c_str());
+#endif
+#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
+    // Disables the "?" button on all dialogs. Disabled by default on Qt6.
+    QCoreApplication::setAttribute(Qt::AA_DisableWindowContextHelpButton);
 #endif
     QCoreApplication::setAttribute(Qt::AA_DontCheckOpenGLContextThreadAffinity);
     QCoreApplication::setAttribute(Qt::AA_ShareOpenGLContexts);

src/citra_qt/util/sequence_dialog/sequence_dialog.cpp

@@ -9,7 +9,6 @@
 
 SequenceDialog::SequenceDialog(QWidget* parent) : QDialog(parent) {
     setWindowTitle(tr("Enter a hotkey"));
-    setWindowFlags(windowFlags() & ~Qt::WindowContextHelpButtonHint);
 
     key_sequence = new QKeySequenceEdit;