GtkDialog mapped without a transient parent.

[ITwrx]

I'm getting:

Gtk-CRITICAL **: 13:49:51.217: gtk_window_set_transient_for: assertion 'parent == NULL || GTK_IS_WINDOW (parent)' failed
Gtk-Message: 13:49:51.223: GtkDialog mapped without a transient parent. This is discouraged.

when i click on the button that opens my custom_dialog. From reading around, it seems gtk needs to be told what the Parent Window of the Dialog is, but i'm not sure if it needs it's immediate upstream viewable, or the actual top-level (and currently only) upstream Window, and i'm not sure how, or where, to specify either.

My structure is:

main.nim:
which imports views/loans/list_loans_view,
and includes/uses

LoanListView:
  loans = app.loan_model.loans

/views/loans/list_loans_view.nim:
which imports add_loan_dialog
and includes/uses:

Button {.expand: false.}:
            text = "+ Loan"
            style = {ButtonSuggested}
            proc clicked() =
              let (res, state) = loanListView.open(gui(AddLoanDialog()))
              if res.kind == DialogAccept:
                addNewLoanToLoans(AddLoanDialogState(state).newLoan) 
                loanListView.loans = getAllLoans()

/views/loans/add_loan_dialog :
which has the AddLoanDialog viewable and associated view.

thanks

[can-lehmann]

From reading around, it seems gtk needs to be told what the Parent Window of the Dialog is, but i'm not sure if it needs it's immediate upstream viewable, or the actual top-level (and currently only) upstream Window, and i'm not sure how, or where, to specify either.

You are correct, GTK needs the "parent window" for the dialog. This means that you need to pass the toplevel viewable to the open function. This is actually pretty simple to do, since every viewable has the toplevel viewable stored in the Viewable.app field. Try using loanListView.app.open instead of loanListView.open.

[ITwrx]

Thanks a lot! That fixed it.