OnKeyDown()

[Radical]

I think this is outside the scope of NT support, but if anyone else knows how this would work, it would be great if you could give me a hint. I'm trying to have a strategy detect a keystroke, and after spending some time reading I came up with the following:

protected void OnKeyDown(KeyEventArgs keyEvent)
            {
            if (keyEvent.KeyCode == Keys.Insert)
                Print("ins!");
            } 

This compiles fine, but when I press the insert key while the strategy is running, nothing happens. Another thing I noticed is that NOTHING seems to work inside this method, like I added a line to print some text if Close[0] > 0, and nothing prints. So does anyone have any ideas as to why this isn't working? I have included the System.Windows.Forms namespace, which I guess is required. Thanks.

[bukkan]

I think this is outside the scope of NT support, but if anyone else knows how this would work, it would be great if you could give me a hint. I'm trying to have a strategy detect a keystroke, and after spending some time reading I came up with the following:

protected void OnKeyDown(KeyEventArgs keyEvent)
            {
            if (keyEvent.KeyCode == Keys.Insert)
                Print("ins!");
            } 

This compiles fine, but when I press the insert key while the strategy is running, nothing happens. Another thing I noticed is that NOTHING seems to work inside this method, like I added a line to print some text if Close[0] > 0, and nothing prints. So does anyone have any ideas as to why this isn't working? I have included the System.Windows.Forms namespace, which I guess is required. Thanks.

you have to assign the event. like in OnStartUp

ChartControl.ChartPanel.KeyDown += new KeyEventHandler(OnKeyDown);

do remove the event at OnTermination.

coding from memory so there can be syntax err

[Radical]

Thanks for the tip. When I add that to my code:

        protected override void OnStartUp()
        {
        ChartControl.ChartPanel.KeyDown += new KeyEventHandler(OnKeyDown);
        }
        
        protected void OnKeyDown(KeyEventArgs keyEvent)
            {
            if (keyEvent.KeyCode == Keys.Insert)
                Print("ins!");
            }   
       protected override void OnTermination()
        {
            ChartControl.ChartPanel.KeyDown -= new KeyEventHandler(OnKeyDown);
        } 

I get the error "No overload for 'OnKeyDown' matches delegate 'System.Windows.Forms.KeyEventHandler' for the line where I assign it and the line where I remove it.

[bukkan]

the method should be like

private void OnKeyDown(object sender, KeyEventArgs e)
{
//do your stuff
}

[Radical]

Wow, that worked, thanks! I had seen the "object sender, KeyEventArgs e" on the MSDN website and I tried putting them in various places, but I didn't try it in OnKeyDown. Thanks again.

[overflowing]

Note using "new KeyEventHandler" as above is superfluous. You can just use the method name directly as the compiler will figure it out.

protected override void OnStartUp()
{
ChartControl.ChartPanel.KeyDown += MyEventHandlerMethod;
}

protected override void OnTermination()
{
ChartControl.ChartPanel.KeyDown -= MyEventHandlerMethod;
}

public void MyEventHandlerMethod(object sender, KeyEventArgs e)
{
Print("It works!");
}