How to use three different keys e.g. (Ctrl Shift O) to open a form in vb.net?

问题

I need to use three different keys e.g, (Ctrl + Shift + F12) to open another form in vb.net.

Please help me.

回答1:

In the keydown event you can access these keys. For example, in this handler...

Private Sub keyDown(ByVal Sender As Object, ByVal e As KeyEventArgs) handles me.keydown

...you can use the booleans e.Alt, e.Control, and e.Shift to tell whether those control keys are down. Then you can do something like this:

Select case CInt(e.keycode)
  case Keys.F12
    if e.Control andalso e.Shift then frm.ShowDialog
    ...

回答2:

Define this function:

Private Declare Function GetKeyState Lib "user32" (ByVal nVirtKey As IntPtr) As Short

So you can check wich keys are pressed at the same moment:

'For example, keys "arrow up" and letter "W"
If GetKeyState(87) < 0 AndAlso GetKeyState(38) < 0 Then
     'Do something
End If

And you can check the keys in a KeyDown event or with a Timer or anything. Hope this helps.

回答3:

You can handle it with key events as in xpda's answer, or, if you already have a MenuItem to do the same action, you can set the ShortcutKeys property of the ToolStripMenuItem.

来源：https://stackoverflow.com/questions/14373100/how-to-use-three-different-keys-e-g-ctrl-shift-o-to-open-a-form-in-vb-net