Comments on: Immediate GUIs in XNA: Scrollbars

By: Roy Triesscheijn

Roy Triesscheijn — Mon, 30 May 2011 19:15:40 +0000

Hey Zuhrias, I don’t know what it’s exactly that you did, but it seems that you are trying to call a method on a class instance that hasn’t been initiated. Or in short did you do:

MyClass c;
c = new MyClass(); //double check this is here
c.DoSomething();

Or did you you forgot the second line?

By: Zuhrias

Zuhrias — Mon, 30 May 2011 04:04:40 +0000

Hi, Roy…

I tried the sample code above, and I got an error on the part imgui.update ()
I’ve put it in the update ().
But still the error.
the following error “Object reference not set to an instance of an object.”.
Can you give an explanation, I am still a newbie in this.

thank’s
Zuhrias

By: Roy Triesscheijn

Roy Triesscheijn — Sun, 27 Feb 2011 11:41:06 +0000

Hmm tough question, you will have to create a proper Viewer (MVC) with abstraction like screens and stuff, It would be hard todo in ‘pure’ immediate form.

By: Esente

Esente — Mon, 21 Feb 2011 12:47:35 +0000

Hi Roy,

How would you implement a layout based on different events? For example, in a RTS game, a selection of single unit will have different buttons and labels than the selection of multiple units together, and totally different than the selection of a building.

Hard coding the positions for those controls in every single event seems weird to me.

By: Roy Triesscheijn’s Weblog » Blog Archive » Immediate GUIs in XNA: Setup and a button

Tue, 30 Mar 2010 19:59:28 +0000

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