detect if pressing a mouse button and wich WinForm c# : I don't want to click on a button or the form, I just want to know if user is pressing the left mouse button while the cursor is in the form.
I've tried this:

    private void PlayForm_KeyDown(object sender, KeyEventArgs e)
            {
                if(e.KeyCode == Keys.LButton)
                {
                    ...
                }
             }
but it doesn't work.
I also tried `PlayForm_Click()` but it works only when the click is on the 'canvas' if there's something else on top it won't work
