Cannot access Window controls from App.AppearanceChanged

ptotushek

Summary

I can't find a way to update my canvas controls when changing color modes while application is running. When I try and access the controls from App.AppearanceChanged Event, I get an error '[Error] App.AppearanceChanged Line 3: Type 'Window_Main' has no member 'Controls'. Is this the way that I'm supposed to be able to do this?

Also, I also can't access any controls properties, etc. from outside the window by using 'Window_Main.Canvas1', etc.

Objo Studio Version

Operating System

Steps To Reproduce

Expected Result

Actual Result

Screenshots, Logs, Or Sample Project

Garry

Thanks for reporting this. You’re not missing anything - this is an embarrassing limitation in Objo Studio 26.7.2.

In this example, Window_Main refers to the window class, not the running window instance. Controls() and designer controls such as Canvas1 are instance members, so they cannot be accessed through Window_Main. The compiler message was technically correct, but Studio did not provide a clean way to reach the automatically created window instance.

This has been fixed for the next release: https://feedback.objo.dev/bug/770

Windows now have their own AppearanceChanged() event:

Event AppearanceChanged()
    Canvas1.Refresh()

    For Each child As Control In Me.Controls()
        child.Refresh()
    Next child
End Event

App.AppearanceChanged() remains available for application-wide state. It runs first, after which every open window receives its own AppearanceChanged() event.

I’ve also improved the compiler diagnostic so attempts to access instance members through a class name will now explain that a window instance is required.