Alt-Shift locks up application

Hi all.

I'm having an issue with TextBoxExt, where pressing Alt-Shift to change the input language causes the application to lockup.

The process is still running and background threads in it are still running, but the gui just stops responding. Windows doesn't mark the window as Not Responding however.

Tracing the exception in CorDbg, I see the call stack go through WndProc of the derived classes, through TextBoxExt.WndProc, and into the Windows Core, where it just stops.

Is this something known? what could I possibly have done wrong?

Hi Miki,

I am not sure what be might causing this issue of application getting locked up when Alt+Shift keys are held down. I am not seeing this happening here with TextBoxExt. In any case, if you want any keys to behave as desired, then you may catch the KeyDown event of the TextBoxExt and handle the keys you want.

void textBoxExt1_KeyDown(object sender, KeyEventArgs e)
{
    if (e.Alt && e.Shift)
    {
        Console.WriteLine("ALT+SHIFT combination keys held down");
        e.Handled = true;
    }
}

Here is a sample for your reference
http://websamples.syncfusion.com/samples/Tools.Windows/F69150/main.htm

Please update us a sample with more details on this that would help us to resolve the problem at the earliest.

Thanks for using Syncfusion Products.

Regards,
Rajagopal
 

Hi Miki,

I am not sure what be might causing this issue of application getting locked up when Alt+Shift keys are held down. I am not seeing this happening here with TextBoxExt. In any case, if you want any keys to behave as desired, then you may catch the KeyDown event of the TextBoxExt and handle the keys you want.

void textBoxExt1_KeyDown(object sender, KeyEventArgs e)
{
    if (e.Alt && e.Shift)
    {
        Console.WriteLine("ALT+SHIFT combination keys held down");
        e.Handled = true;
    }
}

Here is a sample for your reference
http://websamples.syncfusion.com/samples/Tools.Windows/F69150/main.htm

Please update us a sample with more details on this that would help us to resolve the problem at the earliest.

Thanks for using Syncfusion Products.

Regards,
Rajagopal