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Asked: 2026-05-27T15:57:32+00:00

I create two windows in my app class as follows: var presentationWindow = new

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I create two windows in my app class as follows:

var presentationWindow = new PresentationWindow();
var interactionWindow = new InteractionWindow();

MainWindow = presentationWindow;
MainWindow.Show();
interactionWindow.Owner = MainWindow;
interactionWindow.Show();

Another application uses ::ShowWindow to hide my application.

::ShowWindow(PresentationWindowHwnd, SW_HIDE);

This causes the presentation window to hide itself, but it does not hide the interaction window.

I have a number of solutions for making sure both windows hide, solving that is not a problem per say. I would like to know why interaction window is not hidden along with presentation window given that it’s owner property is set to presentation window.

Windows 7 64/32bit
Visual Studio 2010
.NET 4.0

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1 Answer

  1. Editorial Team

    Minimize/Maximize/Close all propagate to the owned windows of a parent; Hide however does not.

    There is nothing within the MSDN documentation that leads me to believe it should behave any other way.

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