C# for the C++ guy...

Hello,

now it happend: I have to participate in a C# project.
I am good in C++ (worked for 6 years in C++), but I have never done anything in C# or even in VS 2005.

The assignment is: I have to write a control which looks like a tree but has instead of the normal tree items a few cells (like a row in a grid).

It should look something like this:

http://img214.imageshack.us/img214/3...nkytreetp3.jpg

I have a grid control which I wrote myself and in C++ I would derive a class from CTreeCtrl and use my cells as the treeitems.

Anything like this possible in C#? Can I "import" my grid classes in C# and use them or should I start entirely from scratch?

Perhaps someone has a few hints.

Robin.

C# is pretty easy if you have C++ experience, you just have to learn some of the differences, such as the way you initiate arrays. You could probably use your control you wrote in C++ indeed, through InterOping/Marshalling, though I don't know much about those things yet. You might have a better time writing it from scratch, since .Net is very helpful, it'd be a breeze, nothing compared to the long and boring way of C++. Just learn about control creation and you should be well on your way.

Quote:

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Originally Posted by blankdev

You might have a better time writing it from scratch, since .Net is very helpful, it'd be a breeze, nothing compared to the long and boring way of C++. Just learn about control creation and you should be well on your way.

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ok I looked into it as your post sounded very promising, but I haven't got a clue. How can derive a class from something like CTreeCtrl (I couldn't find that is there an aquivalent)?

Robin

Quote:

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Originally Posted by robin83

ok I looked into it as your post sounded very promising, but I haven't got a clue. How can derive a class from something like CTreeCtrl (I couldn't find that is there an aquivalent)?

Robin

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Just by looking at your block diagram and seeing your CTreeCtrl command, I think you should look into TreeView and ListView. I'm not sure the difference between the two, but I just started looking at TreeView. Its the basic window explorer style when displaying the directories. How would you make it like your diagram, I have no clue. Again, I just started playing with TreeView recently.

ok, now I am officially clueless. The thing that makes the project even harder (for me) is the target platform: it has to run on a pocketpc.
I tried to work with TreeView, but I could not override OnPaint. It simply gets not called. WinProc is unknown, although some examples use it. Even if I could work with OnPaint, I do not know what to do with it, as it is only provided in TreeView, not in TreeNode as I would have expected.

I hope somebody can help?

Robin

I'd have an owner drawn ListView (or ListBox even) and do your own drawing of each of the leaves.

Darwen.

So that is my only chance then? I have to write my own treeview control, to take care of the drawing of the nodes, correct?

There are quite a few examples of this kind of control about, most seem to override ListView and add the Tree functions rather than the other way around. Try TreeListView for a starting point.

Hi,

For a C++ guy moving to C#, i'd suggest GDI+ first. If u have an
understanding of GDI+ , its quite easy to draw custom controls (owner draw).

Its better not to mix managed code (C#) and unmanaged code (C++) as
long as u can avoid it. The interop issues are a headache and u'll slowly
fall into the wrong groove.

C# has a lot of easy to use classes and for a C++ guy with a lot of
experience like u can adapt to C# in a jiffy :) All Luck.

I've seen folks do that type of thing w/ the .net 2.0 data grid view control.

Yes I think luck and a little bit of effort was all I needed.
Yesterday night and today I wrote my one control. It needs a little bit tweaking here and there but the basics (including owner draw of the nodes!!!!) is ready!!!!

Thanks for your help

hi,

i realise this is an old post, but would you be able to post the code you used? i have been trying to do this for a while, and i keep hitting brick wall after brick wall

or even just a pointer in the right direction

cheers
adam