My code matches code in the book, but it doesn't work. I keep getting erros

[ZZxZukaxZZ]

I like to follow the book and write the code in it, but I always get errors. Whenever i check it with the sources in the book though, it matches. has anybody else had this problem?

[J. Harbour]

What errors are you getting?

[ZZxZukaxZZ]

This is for the WalkAbout program in Chapter 11. This has also happened with the programs before, most of them if i can recall, but I figured it would fix itself once i progressed farther in the book.

Error   1   Type 'Direct3D.Sprite' is not defined.   C:\Users\Zuka\Documents\Visual Studio 2008\Projects\CH 10\WalkAboutAO\WalkAboutAO\CDirect3D.vb   9   25   WalkAboutAO
Error   2   Type 'Direct3D.Sprite' is not defined.   C:\Users\Zuka\Documents\Visual Studio 2008\Projects\CH 10\WalkAboutAO\WalkAboutAO\CDirect3D.vb   18   42   WalkAboutAO
Error   3   Name 'SpriteFlags' is not declared.   C:\Users\Zuka\Documents\Visual Studio 2008\Projects\CH 10\WalkAboutAO\WalkAboutAO\CDirect3D.vb   45   24   WalkAboutAO
Error   4   Type 'Direct3D.Sprite' is not defined.   C:\Users\Zuka\Documents\Visual Studio 2008\Projects\CH 10\WalkAboutAO\WalkAboutAO\CDirect3D.vb   80   24   WalkAboutAO
Error   5   Name 'TextureLoader' is not declared.   C:\Users\Zuka\Documents\Visual Studio 2008\Projects\CH 10\WalkAboutAO\WalkAboutAO\CSprite.vb   113   20   WalkAboutAO
Error   6   Name 'SurfaceLoader' is not declared.   C:\Users\Zuka\Documents\Visual Studio 2008\Projects\CH 10\WalkAboutAO\WalkAboutAO\CTileScroller.vb   128   9   WalkAboutAO
Error   7   Overload resolution failed because no accessible 'Filter' accepts this number of arguments.   C:\Users\Zuka\Documents\Visual Studio 2008\Projects\CH 10\WalkAboutAO\WalkAboutAO\CTileScroller.vb   128   51   WalkAboutAO
Error   8   Name 'UpdateSrollPosition' is not declared.   C:\Users\Zuka\Documents\Visual Studio 2008\Projects\CH 10\WalkAboutAO\WalkAboutAO\Form1.vb   86   9   WalkAboutAO

[J. Harbour]

It looks like some source code files are missing from the project, or DirectX references are missing (that would cause TextureLoader and SurfaceLoader to generate errors).

[ZZxZukaxZZ]

I tried adding the service reference again, but still no luck

[J. Harbour]

Are you using 64-bit Windows?


I have compiled the examples with Visual Basic 2008, so I can confirm for you that the sources work with the version you are using. I did not even have to touch the references because they still worked from the original projects created in 2006.

Are you opening the WalkAbout program directly from the book or did you type it in yourself?

[jwright]

I'm not sure how you are comparing your source code, but that is something I do fairly frequently as part of my job and it is very easy to miss one or two minor things that can cause major problems.  I would recommend comparing your code against the source from the cd using a tool such as ExamDiff http://www.prestosoft.com/edp_examdiff.asp.  Exam Diff is a freeware tool that has saved me a lot of time in tracking down delta's in source code files and I think you will find it quite helpful.

[ZZxZukaxZZ]

I am using 32-bit.
I write the code, then compare it to the source you provided with the CD.
I thought it would work all the same, but is there something I'm missing?

[J. Harbour]

Can you compile and run the projects off the CD?

[ZZxZukaxZZ]

Yes, those all work perfectly

[jwright]

I would recommend that you compare your files (which don't work) with the files from the cd (which do work) using a tool such as ExamDiff as there must be some delta between the files somewhere.

[ZZxZukaxZZ]

I compared it and changed it but still get the same errors. Do i need to do something different because of my computer?

[jwright]

Well if the code from the book is compiling fine on your computer, but your code still isn't working that leads me to believe that there is still a problem in your code somewhere.  Without seeing the code I cannot think of anything else to suggest you try.