Control.KeyDown Problem

[Jerome Terry]

Hi,

Why don't UserControl's received Key events for the arrow keys? Further,
when a user control is added to a Form, why does the form stop receiving Key
events for the arrow keys? I have tried setting IsInputKey(Keys.Left,
Keys.Right, Keys.Up, Keys.Down), but that doesn't work.

Regards,
Jerome.

 

[Daisy]

Why don't UserControl's received Key events for the arrow keys? Further,
when a user control is added to a Form, why does the form stop receiving Key
events for the arrow keys? I have tried setting IsInputKey(Keys.Left,
Keys.Right, Keys.Up, Keys.Down), but that doesn't work.

Works for me, but my control has a scrollbar, and that also picks them up

See:

My code looks like:

[constructor]
this.KeyDown += new KeyEventHandler(Event_KeyDown);

[then]
public void Event_KeyDown(object sender, KeyEventArgs e)
{

// 37, 38, 39, 40, left, up, right, down
switch ((int)e.KeyCode)
{

case 37:
((Message)this.Messages[this.SelectedIndex]).Expanded = false;
break;

case 39:
((Message)this.Messages[this.SelectedIndex]).Expanded = true;
break;

case 38:
this.SelectedIndex--;
break;

case 40:
this.SelectedIndex++;
break;

}

this.Invalidate();

}

 

[Daisy]

Hi,

Why don't UserControl's received Key events for the arrow keys? Further,
when a user control is added to a Form, why does the form stop receiving Key
events for the arrow keys? I have tried setting IsInputKey(Keys.Left,
Keys.Right, Keys.Up, Keys.Down), but that doesn't work.

Well, I've fixed mine, or gotten it to the same stage as you. KeyDown works
for character keys, but not cursor keys. My scrollbar seems to have stopped
stealing the focus, but I really need cursour keys to work :O(

 

[Daisy]

<snip>

Here you go

http://www.ondotnet.com/pub/a/dotnet/2002/04/29/keys.html?page=2

Seems to get cursor keys, we can use KeyUp, or ProcessDialogKey

Worth a try...