Keyboard injection of symbols

Question

How do I inject keyboard characters that are not alphabetical nor numerical, like the % or # ?

With the standard code below, or similar, I can inject alphabetical characters and numbers.

I have confirmed that info.ScanCode opens the possibility to inject other characters, but I can't find the way to map ScanCodes to Virtual Keys.

        foreach (char character in login0)
        {
            info.VirtualKey = (ushort)((VirtualKey)Enum.Parse(typeof(VirtualKey), character.ToString(), true));

            inputInjector.InjectKeyboardInput(new[] { info });
            await Task.Delay(40).ConfigureAwait(false);
        }

Answer 1

Hello,

Welcome to Microsoft Q&A!

Special characters cannot be directly mapped to a single VirtualKey. Taking "&" as an example, we use key combinations on most keyboards: Shift + 7. If you want to adapt to other characters, you need to write the key combination list yourself and match according to the input characters. This is a very tedious thing, and it is not universal.

But triggered from the perspective of text input, each character corresponds to a unicode, we can accurately identify each character through Unicode, no longer need to consider the combination of VirtualKey mapping.

In InputInjector, we can do this by setting KeyOptions:

InputInjector inputInjector = InputInjector.TryCreate();
foreach (var letter in "hello&yo")
{
    var info = new InjectedInputKeyboardInfo();
    info.ScanCode = (ushort)letter;
    info.KeyOptions = InjectedInputKeyOptions.Unicode;
    inputInjector.InjectKeyboardInput(new[] { info });
    info.KeyOptions = InjectedInputKeyOptions.KeyUp;
    inputInjector.InjectKeyboardInput(new[] { info });
}

In the input text, we include the special characters &, but through Unicode, there is no difference between entering special characters and entering ordinary letters, because they all have exclusive Unicode.

So this is a general method. You don't have to consider how to use VirtualKey for special characters, just use Unicode to recognize characters.

Thanks.