Examples: fix compile without printsupport

Checking for QT_CONFIG(printdialog) is not enough when printsupport is
completely disabled since then the macro will throw an error. Therefore
add an additional check 'defined(QT_PRINTSUPPORT_LIB)' before using the
QT_CONFIG macro.

Fixes: QTBUG-81626
Change-Id: Ie9898f057cdd6bf9daf4ba9135987cb6e901e7bf
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>

examples/widgets/dialogs/licensewizard/licensewizard.cpp

@@ -369,7 +369,7 @@ void ConclusionPage::setVisible(bool visible)
 
 void ConclusionPage::printButtonClicked()
 {
-#if QT_CONFIG(printdialog)
+#if defined(QT_PRINTSUPPORT_LIB) && QT_CONFIG(printdialog)
     QPrinter printer;
     QPrintDialog dialog(&printer, this);
     if (dialog.exec())

examples/widgets/graphicsview/chip/view.cpp

@@ -264,7 +264,7 @@ void View::toggleAntialiasing()
 
 void View::print()
 {
-#if QT_CONFIG(printdialog)
+#if defined(QT_PRINTSUPPORT_LIB) && QT_CONFIG(printdialog)
     QPrinter printer;
     QPrintDialog dialog(&printer, this);
     if (dialog.exec() == QDialog::Accepted) {

examples/widgets/itemviews/pixelator/mainwindow.cpp

@@ -167,7 +167,7 @@ void MainWindow::openImage(const QString &fileName)
 
 void MainWindow::printImage()
 {
-#if QT_CONFIG(printdialog)
+#if defined(QT_PRINTSUPPORT_LIB) && QT_CONFIG(printdialog)
     if (model->rowCount(QModelIndex())*model->columnCount(QModelIndex()) > 90000) {
         QMessageBox::StandardButton answer;
         answer = QMessageBox::question(this, tr("Large Image Size"),

examples/widgets/mainwindows/dockwidgets/mainwindow.cpp

@@ -128,7 +128,7 @@ void MainWindow::newLetter()
 //! [3]
 void MainWindow::print()
 {
-#if QT_CONFIG(printdialog)
+#if defined(QT_PRINTSUPPORT_LIB) && QT_CONFIG(printdialog)
     QTextDocument *document = textEdit->document();
     QPrinter printer;
 

examples/widgets/richtext/orderform/mainwindow.cpp

@@ -248,7 +248,7 @@ void MainWindow::openDialog()
 //! [17]
 void MainWindow::printFile()
 {
-#if QT_CONFIG(printdialog)
+#if defined(QT_PRINTSUPPORT_LIB) && QT_CONFIG(printdialog)
     QTextEdit *editor = static_cast<QTextEdit*>(letters->currentWidget());
 //! [18]
     QPrinter printer;

examples/widgets/richtext/textedit/textedit.cpp

@@ -545,7 +545,7 @@ bool TextEdit::fileSaveAs()
 
 void TextEdit::filePrint()
 {
-#if QT_CONFIG(printdialog)
+#if defined(QT_PRINTSUPPORT_LIB) && QT_CONFIG(printdialog)
     QPrinter printer(QPrinter::HighResolution);
     QPrintDialog *dlg = new QPrintDialog(&printer, this);
     if (textEdit->textCursor().hasSelection())

examples/widgets/touch/fingerpaint/scribblearea.cpp

@@ -170,7 +170,7 @@ void ScribbleArea::resizeImage(QImage *image, const QSize &newSize)
 //! [21]
 void ScribbleArea::print()
 {
-#if QT_CONFIG(printdialog)
+#if defined(QT_PRINTSUPPORT_LIB) && QT_CONFIG(printdialog)
     QPrinter printer(QPrinter::HighResolution);
 
     QPrintDialog printDialog(&printer, this);

examples/widgets/tutorials/notepad/notepad.cpp

@@ -92,7 +92,7 @@ Notepad::Notepad(QWidget *parent) :
     connect(ui->actionAbout, &QAction::triggered, this, &Notepad::about);
 
 // Disable menu actions for unavailable features
-#if !QT_CONFIG(printer)
+#if !defined(QT_PRINTSUPPORT_LIB) || !QT_CONFIG(printer)
     ui->actionPrint->setEnabled(false);
 #endif
 
@@ -171,7 +171,7 @@ void Notepad::saveAs()
 
 void Notepad::print()
 {
-#if QT_CONFIG(printer)
+#if defined(QT_PRINTSUPPORT_LIB) && QT_CONFIG(printer)
     QPrinter printDev;
 #if QT_CONFIG(printdialog)
     QPrintDialog dialog(&printDev, this);

examples/widgets/widgets/imageviewer/imageviewer.cpp

@@ -201,7 +201,7 @@ void ImageViewer::print()
 //! [5] //! [6]
 {
     Q_ASSERT(imageLabel->pixmap());
-#if QT_CONFIG(printdialog)
+#if defined(QT_PRINTSUPPORT_LIB) && QT_CONFIG(printdialog)
 //! [6] //! [7]
     QPrintDialog dialog(&printer, this);
 //! [7] //! [8]

examples/widgets/widgets/scribble/scribblearea.cpp

@@ -210,7 +210,7 @@ void ScribbleArea::resizeImage(QImage *image, const QSize &newSize)
 //! [21]
 void ScribbleArea::print()
 {
-#if QT_CONFIG(printdialog)
+#if defined(QT_PRINTSUPPORT_LIB) && QT_CONFIG(printdialog)
     QPrinter printer(QPrinter::HighResolution);
 
     QPrintDialog printDialog(&printer, this);