db populates model based QTreeView, rowclicked populates QTextBrowser but...

[ChrisW67]

I suggest you read the error messages again. The compiler is not issuing them out of spite: ui and model are not valid where you are trying to use them.

If your code actually looks like:

void rowClicked(const QModelIndex& ...) {
  // E:\Bird\splash1\mainwindow.cpp:-1: In function 'void rowClicked(const QModelIndex&)':
  // E:\Bird\splash1\mainwindow.cpp:181: error: 'model' was not declared in this scope
  // E:\Bird\splash1\mainwindow.cpp:186: error: 'ui' was not declared in this scope
  // E:\Bird\splash1\mainwindow.cpp:181: warning: unused variable 'id' [-Wunused-variable]
  ...
}

void rowClicked(const QModelIndex& ...) {
  // E:\Bird\splash1\mainwindow.cpp:-1: In function 'void rowClicked(const QModelIndex&)':
  // E:\Bird\splash1\mainwindow.cpp:181: error: 'model' was not declared in this scope
  // E:\Bird\splash1\mainwindow.cpp:186: error: 'ui' was not declared in this scope
  // E:\Bird\splash1\mainwindow.cpp:181: warning: unused variable 'id' [-Wunused-variable]
  ...
}

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then the issue is that rowClicked() is a free function and not part of the MainWindow class (i.e. void MainWindow::rowClicked()).

[eutectoid]

Hi,
Thank you for your time and suggestions.
I did read the error messages and googled as to what they meant but as a newbie, I did not understand.
This part of the program works now and I won't make this mistake a second time.
Thanks once again for your input