如何在不聚焦的情况下在按键上进行按钮更改？

Question

I'm trying to make a program in which when you hit a key it will show a button in a keyboard like row on screen so I'm trying to make the buttons change color while pressed and go back to normal when released without focusing the button, is there a way in which I can make this?

I've been looking at a lot of tutorials and code snippets but none of them seems to work in my case.

the reason why I don't want to focus the buttons is because I have a text box in which written text is shown and changing the focus would just be a bother because you would have to click in it every time you want to write a character.

Answer 1

Force the focus back to the TextBox .

Example:

button1.Click += (sender, args) => 
{
    // where "this" is a Form, if you are inside another control,
    // try "ParentForm" (works for Panel)
    this.ActiveControl = textBox1;
};

About the colors, I usually do with Label , but you can change the following to Button

internal class LabelButton : Label
{
    public Color MouseOverColor {get; set;} = Color.Red;
    public Color MouseDownColor {get; set;} = Color.Green;
    public Color NormalColor {get; set;} = Color.Blue;

    public LabelButton() {
        MouseDown  += (sender, args) => BackColor = MouseDownColor;
        MouseUp    += (sender, args) => BackColor = NormalColor;
        MouseEnter += (sender, args) => BackColor = MouseOverColor;
        MouseLeave += (sender, args) => BackColor = NormalColor;
    }
}