ShowColorDialog parent makes all windows modeless

Rhino Developer
1

I’m integrating Rhino dialogs into a WPF add-in and I’m hitting a strange issue with window modality.

Here’s the code I’m using:

internal static bool GetColor(System.Windows.Window owner, out Color color)
{
    var pick = new Rhino.Display.Color4f();

    if (Rhino.UI.Dialogs.ShowColorDialog(owner, ref pick, false))
    {
        var picked = pick.AsSystemColor();
        color = Color.FromArgb(255, picked.R, picked.G, picked.B);
        return true;
    }
    else
    {
        color = Color.Empty;
        return false;
    }
}

When I call this from a WPF window, the Rhino color dialog works and returns the expected color.
However, after it closes, all my dialogs lose their owner relationship they are no longer modal.
I can freely move and interact with other windows that should still be blocked by the active dialog.

Has anyone seen this behavior? Is there a reliable way to show Rhino.UI.Dialogs.ShowColorDialog from a WPF owner window without breaking window modality afterwards?

Thanks!

3

Hi @m_dev,

Try using null as the parent/owner.

– Dale