Generating the source

In this tutorial, we use KDevelop subclassing tool in Automake Manager. If you have KDevelop version which has not that capability, then please go to Chapter 7 where I explain this step without the subclass tool.

Here we start with the KDE simple project named SigCreate and the sigcreatedlg.ui that we have added in our project. In the Automake Manager, in the section sigcreate (Program in bin) you must have three files: sigcreatedlg.ui, sigcreate.cpp and main.cpp. The project must compile and give the main window as in picture 3 (creating.html).

As the sigcreate class is no use for us, we will remove it and use it for subclassing the sigcreatedlg.ui file. In the Automake Manager, right click on sigcreate.cpp and select Remove and a dialog pops up. Please check 'Also Remove it from disk'. Then do the same with sigcreate.h. This is the way to remove obsolete files from your project and the Makefile.am will be updated. Remember to run automake & friends and configure before compiling your project again. We will not do it right now because we will make other changes. We will now use the class name SigCreate for the subclass.

In the Automake Manager, in sigcreate (program in bin), right click on sigcreatedlg.ui and choose Subclass Widget... from the context menu that appears. Then fill in the subclass name which is SigCreate. Check the box: Reformat source and click on OK. Say No then about adding these files in cvs as we did not enable this in our project.

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We have to suppress some lines in main.cpp as the KDE simple project template refers to a KMainWindow which is usually the base class used. But here, SigCreate is based on QWidget. You have to remove all the lines between KApplication app; and return app.exec(); except the ones I keep here:

	SigCreate *mainWin = 0;

        mainWin = new SigCreate();
        app.setMainWidget( mainWin );
        mainWin->show();