Hint: You can resize, remove, or add elements to the Qt Designer interface that you use often to improve your work-flow. You can add hidden/closed parts of the interface via "View" menu option. I personally only have Object Inspector and Property Editor on the right side of Qt Designer. Click on the button you added to the form.

You can add a background image to your MainWindow by doing the following: create a QPixmap and give it the path to your image. create a QPalette and set it's QBrush with your pixmap and it's ColorRole to QPalette::Background. set your MainWindow palette to the palette you created. Adding a background image to an MDI area. On TheMailingList, Sarah Mount asked whether it was possible to display a non-tiled image in the background of an MDI area widget.. The following code uses the same technique that the qtconfig tool uses to place a message in the background of its preview widget. In this example, setting the centered attribute causes the image to be displayed in the ...