Assertion Failed! Handle has not been created.

Hey,

I have recently been working on a tutorial application using C#, and between each "slide", I need to fade out the current slide's controls and fade in the next slide's controls. To do this, I created a new control, and added a FadeIn and a FadeOut command.

I successfully added the fadeout command, and I escentially mirrored it to make a fadein command by copying the code and switching out the variables.

Now, here is the problem that I am having.
At program execution, this code is called to fade in my first screen:

[CODE]
Debug.WriteLine("Fadein() Called");
        Debug.WriteLine("Fadein() line1");
        animD_FadeIn = new AnimatedDouble( this.Visual.Alpha );

        Debug.WriteLine("Fadein() line2");
        this.animD_FadeIn.FinalValue = 255.00;

        Debug.WriteLine("Fadein() line3");
        this.animD_FadeIn.Speed = 0.85;
        Debug.WriteLine("Fadein() line4");
        this.animD_FadeIn.Epsilon = 0.5;

        Debug.WriteLine("Fadein() line5");
        if ( this.timer_fadeout == null )
        {
            this.timer_fadein= new PlayerTimer();
            this.timer_fadein.Tick += new EventHandler(fadeIn_Timer);
            this.timer_fadein.Start();
        }
[/CODE]

Now. Below where it says "Line 1" is where I have traced the problem. Apparently, C# doesn't like me putting this.Visual.Alpha there.

Any help

P.S, It shouldn't make a difference, but I am using a C# to SWF compilor called neoswiff.
www.globfx.com/products/neoswiff

It allows you to program in C# and it compiles it into a flash movie.

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Assertion Failed! Handle has not been created.

S Krishna

the first post says

'Now. Below where it says "Line 1" is where I have traced the problem. Apparently, C# doesn't like me putting this.Visual.Alpha there.'

the second post says "i am referring to that control's properties / methods / whatyoumaycallit." Actually, you are calling the constructor for AnimatedDouble.

the second also says "it works".

But it's NOT working, right So please tell us more about HOW it's NOT working: any error messages error numbers Is it a C# problem, or a problem with the call to the library

Altho one can refer to documentation, it may be wrong; the final arbiter is always The Code.

Suggestion: put this line of code
this.animD_FadeOut = new AnimatedDouble(this.Visual.Alpha);
in a try/catch and see if an exception is thrown.

Sorry i cant be more definite than that, but there's not much info to go on here...
mac314
Erm..

It's part of a control class, so by this i am referring to that control's properties / methods / whatyoumaycallit.

Inside the control is the "Visual" class (inherited), and I need to pass the property "Alpha" to AnimatedDouble so it can animate a fadein/fadeout.

This code for Fade Out is exactly the same, but with the variables named to fadein and not fade out. It works:

public void FadeOut ()
    {
        this.animD_FadeOut = new AnimatedDouble(this.Visual.Alpha);

        this.animD_FadeOut.FinalValue = 0.00;

        this.animD_FadeOut.Speed = 0.85;
        this.animD_FadeOut.Epsilon = 0.5;

        if ( this.timer_fadeout == null )
        {
            this.timer_fadeout= new PlayerTimer();
            this.timer_fadeout.Tick += new EventHandler(fadeOut_Timer);
            this.timer_fadeout.Start();
        }
    }

Now, as for he animated double's overrides (if I get you correctly)
Then look here:

http://www.globfx.com/products/neoswiff/sdk/System.Animation.EasyOut/AnimatedDouble.html

Also, I noticed that this only happens in debug mode.
jonchicoine
Hey Ex -

What arguments to the AnimatedDouble ctor do you permit
Ingo Muschenetz
It is only failing in debug mode as assertions are obviously being disabled in release mode. So it is still failing, but just quietly.

I think it actuallly looks like an issue with neoswiff and would try contacting them. There is not a lot anyone here can do without having had experience with neoswiff.

This is also more a Windows Forms issue rather than a C# Language issue, so I am moving forums.
Assertion Failed! Handle has not been created.

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