Does anyone know how to center a KDE window either in the constructor or in before widget->show() is run in main()?

I tried this,

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mainWindow->move(KApplication::desktop()->screen()->rect().center() - mainWindow->rect().center());

But it gives me an error at "KApplication::desktop()",

<snip>/main.cpp:44:45: error: invalid use of incomplete type ‘struct QDesktopWidget’
/usr/include/QtGui/qapplication.h:73:7: error: forward declaration of ‘struct QDesktopWidget’

lin-unix wrote:

<snip>/main.cpp:44:45: error: invalid use of incomplete type ‘struct QDesktopWidget’
/usr/include/QtGui/qapplication.h:73:7: error: forward declaration of ‘struct QDesktopWidget’

This is telling you it does not know about QDesktopWidget. Easy to solve, just:

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#include <QDesktopWidget>

You need to #include <QDesktopWidget> for the given code to compile. You may also need QRect.