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Marble Qt Designer Plugin: Look Mom, No Code!
Tutorial Series   Marble Widget Plugin for Qt Designer
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The Marble Widget Plugin for Qt Designer

Compiling the MarbleWidget Plugin

The Marble Widget is also offered as a Qt Designer plugin. If you compile Marble yourself you probably need to enable the compilation of the Qt Designer plugin:

If your source directory is "~/marble" and your build directory is "~/marble_build" then you can enable compilation of the Qt Designer plugin via the cmake call:

Choose "-DQTONLY=ON" as a parameter if you don't have KDE installed.
Once you have compiled Marble using "make" you can install everything using "make install". This should install the file
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into Qt's designer plugin directory (please check this in case things don't work out). If you compile the Qt-Only version then the file name is called <b></b>.
Once you start Qt Designer you should spot a new "Marble Desktop Globe" category in the widget box on the left:
On Windows you must keep in mind that your MarbleWidget.dll must be in the PATH when the designer executable is called. Otherwise the marble plugins will result in a loading error.
=== Using the MarbleWidget Plugin ===
You can use this Marble Widget just like all other widgets inside Qt Designer: Once you have started Qt Designer you can choose a new form from the ready-made templates (e.g. a QWidget). Now you can just drag and drop the Marble Widget from the widget box onto your form: 
Alternatively we also provide other widget plugins that allow controlling the Marble Widget: e.g. the navigation widget plugin and the latitude-longitude widget plugin. 
The map properties of the Marble Widget can be adjusted in the Property Editor on the right: all properties get assigned and displayed immediately on the map without having to press the "Preview" menu entry.
There are two ready-made examples available inside the example directory of the Marble source code:
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The file example2.ui nicely demonstrate how signals and slots work with the MarbleWidget:
You can preview the widget by choosing "Preview" from the "Form" menu. Inside the preview it's possible to pan and zoom the map. Of course the signal-slot connections can be tested inside the preview as well.

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