Question

I am receiving a keystroke in a Form object’s OnKeyDown. When some conditions are met (such as the keystroke is a printable character and not a hotkey) I want to forward the key to a text control on the form and set focus to the text control so the user can continue typing. I am able to decode the character typed using MapVirtualKey but I get only the “unshifted” character (always upper case). Using ToUnicodeEx seems like too much of a PITA.

What is the best way to do this? Isn’t there a way to simply forward the Windows message itself?

Can’t I intercept the ProcessKeyPreview or some such and forward it to the text control’s ProcessKeyPreview? Any ideas along similar lines?

Bump: No answers!

Answer 1

I did this on a single form with the following

private void MyFunkyForm_KeyDown(object sender, KeyEventArgs e)
{
    // to avoid duplicate letters in textbox :-)
    if (textBox2.Focused == false)
    {

        // get the char from the Keycode
        char inputChar = (char)e.KeyCode;
        if (char.IsLetterOrDigit(inputChar))
        {
            // if letter or number then add it to the textbox
            textBox2.Text += inputChar;
        }

        // set focus
        textBox2.Focus();
        // set cursor to the end of text, no selection
        textBox2.SelectionStart = textBox2.Text.Length;
    }
}