private void about() {
QMessageBox.about(
this,
tr("About Icons"),
tr(
"The <b>Icons</b> example illustrates how Qt renders an icon in "
+ "different modes (active, normal, disabled, and selected) and "
+ "states (on and off) based on a set of images."));
}
private void about() {
QMessageBox.about(
this,
tr("About Scribble"),
tr(
"<p>The <b>Scribble</b> example shows how to use QMainWindow as the "
+ "base widget for an application, and how to reimplement some of "
+ "QWidget's event handlers to receive the events generated for "
+ "the application's widgets:</p><p> We reimplement the mouse event "
+ "handlers to facilitate drawing, the paint event handler to "
+ "update the application and the resize event handler to optimize "
+ "the application's appearance. In addition we reimplement the "
+ "close event handler to intercept the close events before "
+ "terminating the application.</p><p> The example also demonstrates "
+ "how to use QPainter to draw an image in real time, as well as "
+ "to repaint widgets.</p>"));
}
private boolean maybeSave() {
if (scribbleArea.isModified()) {
QMessageBox.StandardButton ret;
ret =
QMessageBox.warning(
this,
tr("Scribble"),
tr("The image has been modified.\n" + "Do you want to save your changes?"),
new QMessageBox.StandardButtons(
QMessageBox.StandardButton.Save, QMessageBox.StandardButton.Discard));
if (ret == QMessageBox.StandardButton.Save) {
return saveFile("png");
} else if (ret == QMessageBox.StandardButton.Cancel) {
return false;
}
}
return true;
}