Hello @supot.
Squish for Qt only exposes "public" APIs. You must declare the desired slots public.
As a test I added...
public slots: int GetColorCode(); QString GetRGBColorCode();...to squish_dir/examples/qt/addressbook/mainwindow.h, and...
int MainWindow::GetColorCode() { return 3; } QString MainWindow::GetRGBColorCode() { return QString("3"); }...to squish_dir/examples/qt/addressbook/mainwindow.cpp, compiled the example and loaded it in Squish.
Afterwards the "Methods" view showed these two methods when selecting the MainWindow object in the "Application Objects" view.
Regards
Clemens