Different approaches howto use Qt-Widgets

The next 3 section describe three different approaches for using roseQtWidgets.
They are the same as for any other Qt-Widget, so you can find a more detailed description at http://doc.qtsoftware.com/4.5/designer-using-a-ui-file.html
The following sections are a short summary of this document, and focus especially on the usage of roseQtWidgets with qrose.

Create Manually

The easiest (but not very comfortable) way to use RoseQtWidgets is by just linking against the libRoseQtWidgets.so and create the widgets yourself.

uic - Qt's Ui-Compiler (suggested)

The next approach uses Qt-Designer, therefore the plugin has to be properly installed. How to setup the integration is described here
After creating a custom widget with Qt-Designer, the ui files can be compiled with uic, which generates a .h file. The setup of autotools Makefile.am to use the uic is described here

Usage example:

        #include "ui_UiFile.h"
        ...
        {
            Ui::NameFromQtDesigner uiObject;
            QWidget * myWidget = new QWidget();
            uiObject.setupUi(myWidget);
            // Access to a subwidget:
            uiObject.myButton->setText("NewCaption");
        }

The created widget can easily be added to a QRose Window.

        QRWindow * window = new QRWindow ();
        (*window)["WindowTitle"] << myWidget;

Load .ui at runtime

There is a possibility to load .ui files at run-time, so there is no need for using the uic-compiler.

Usage example:

            QUiLoader loader;
            QFile fileStream("myUiFile.ui");
            fileStream.open(QFile::ReadOnly);

            QWidget * loadedWin = loader.load(&fileStream);

            // Access to a subwidget:
            QPushButton * myButton = loadedWin->findChild<QPushButton*>("NameOfButton");
            myButton->setText("NewCaption");

Warning: On some architectures there may be problems with the initialization of static variables in the dynamic loaded lib. So there a crash when using NodeInfoWidget to display file information which is stored in static vars in librose.

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