![]() Fortunately knowledge of the layout classes is not required to arrange widgets with Qt Designer. These classes solve the challenge of laying out widgets automatically, providing a user interface that behaves predictably. Qt provides a number of classes to automatically handle layouts – QHBoxLayout, QVBoxLayout, QGridLayout, and QFormLayout. Open a context menu over a widget to change its name or remove it from the scratch pad.Ī layout is used to arrange and manage the elements that make up a user interface. These widgets can be used in the same way as any other widgets, but they can also contain child widgets. The scratch pad category can be filled with any widget currently displayed in a form by dragging them from the form and dropping them onto the widget box. Qt Designer provides a scratch pad feature that allows you to collect frequently used objects in a separate category. When in Widget Editing Mode, you can add objects to a form by dragging the appropriate items from the widget box onto the form, and dropping them in the required locations. You can display all of the available objects in a category by clicking on the handle next to the category label. Each of the categories in the widget box contain widgets with similar uses or related features. The widget box provides a selection of standard Qt widgets, layouts, and other objects that can be used to create user interfaces on forms. The main window consists of a menu bar, a tool bar, and a widget box that contains the widgets you can use to create your user interface. In multi-window mode, you can arrange each of the tool windows to suit your working style. You can switch modes in the Preferences dialog from the Edit menu. ![]() When used from within an integrated development environment (IDE) only the multi-window user interface is available. When used as a standalone application, Qt Designer's user interface can be configured to provide either a multi-window user interface (the default mode), or it can be used in docked window mode. If you have large forms that do not fit in the Qt Creator Design mode, you can open them in the stand-alone Qt Designer. For more information about the differences, see the Qt Creator Manual. Generally, the integrated Qt Designer contains the same functions as the standalone Qt Designer. ui files in the integrated Qt Designer, in Design mode. You can also launch Qt Designer directly from Qt Creator. Once you have installed Qt, you can start Qt Designer in the same way as any other application on the development host.
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