Form blocked in minimized state

Hello,

Back to share a new strange and very annoying bug.

How to reproduce :

• Just compile MaterialSkinExample project
• Go in bin folder and run as administrator MaterialSkinExample.exe
• Application is displaying
• Click in taskbar on the app to minimize it
• Click in task on the app to show it again

And here is the issue, the window will never come back to normal state It is only happening when you launch your app in admin, it is very important to reproduce the case.

For now all verification, checks, and investigation gave me nothing. A colleague had also a look on it without more result.

The only thing that I know is that’s probably an issue with the TabControl component. I’m not able to reproduce it on MaterialSkinExample project but on the project on which I’m working when I’ve removed the line this.DrawerTabControl = this.materialTabControl; in Main.Designer.cs it was making minimize/normal state change working again.

Running on Win10 64bits

[muzsor]

Here is a piece of code that worked for me, I think this is not a great solution.

// Form.cs
private const int WM_ACTIVATEAPP = 0x001C;

protected override void WndProc(ref Message m)
{
    base.WndProc(ref m);
    if (WindowState == FormWindowState.Minimized && m.Msg == WM_ACTIVATEAPP && m.WParam == IntPtr.Zero)
    {
        BringToFront();
    }
}

Running on .Net Framework 4.7.2 Win10 1903

[leocb]

Hi, thanks for reporting, you keep surprising me with these bug reports hahah

Probably not a problem with the tabControl, but with how I handle the Drawer (hamburguer menu) with 2 extras forms. I’ve never seen administrator rights causing weird behavior in the interface messages.