Re: force winforms custom control to be square - C# Discussion Boards

Re: implement ray tracing algorithm in c#

Nettai24-Feb-09 0:36

24-Feb-09 0:36

thanks for ur reply....we r working on computed tomography project.....my part is 3d visualization....
i am having set of 2d images..somewhere i got books related to 3d visualization.....there they mentioned volume rendering is the technique used for 3d visualization ....thuts why i am asking here bout that....

Re: implement ray tracing algorithm in c#

Deresen24-Feb-09 1:32

Deresen

24-Feb-09 1:32

If you have a book, why do you ask us the questions???

Why don't you guys ever use google. It's the best for these kind of things...
I've googled this string: "volume rendering 3D".
What did I get? A wikipedia article:
wiki/Volume_Rendering[^]

At the bottom of the page there's almost always a link part with good and usefull links.
Use those and go to here:
visual tutorial[^]

"Do we have to write articles which will provide you the information to use google?"

Re: implement ray tracing algorithm in c#

ABitSmart24-Feb-09 1:58

ABitSmart

24-Feb-09 1:58

Deresen wrote:
"Do we have to write articles which will provide you the information to use google?"

Haven't you read this[^] ? Laugh | :laugh:

Re: implement ray tracing algorithm in c#

Deresen24-Feb-09 2:04

Deresen

24-Feb-09 2:04

<defeated> WTF | :WTF:

<walks away="" with="" shame="" all="" over=""> Dead | X|

Passing Variant parameters by ref to ActiveX COM object Type Mismatch exception [modified]

brettonansley24-Feb-09 0:00

brettonansley

24-Feb-09 0:00

Hi
I am trying to work with an ActiveX COM object written in VB6. Most of it works fine but there is one function defined as follows:
short GetExamDetailsBuffer(VARIANT pVariant1, VARIANT pVariant2, VARIANT pVariant3)
This should return the data in 3 arrays of strings. It translates into a function that looks like this in .Net:
public virtual short GetExamDetailsBuffer(ref object pVariant1, ref object pVariant2, ref object pVariant3)

So I tried calling it by declaring 3 object variables and passing them as parameters:
object var1, var2, var3;
var1 = new object();
var2 = new object();
var3 = new object();
short result = MyObject.GetExamDetailsBuffer( ref var1, ref var2, ref var3);

but I get the following error message:
System.Runtime.InteropServices.COMException: Type Mismatch. (Exception from HRESULT: 0x80020005 (DISP_E_TPYEMISMATCH))
at System.RuntimeType.ForwardCallToInvokeMember(String memberName, BindingFlags flags, Object target, Int32[] aWrapperTypes, MessageData& msgData)

Any ideas to how I can get this to work?

modified on Tuesday, February 24, 2009 6:39 AM

force winforms custom control to be square

Jon Hulatt23-Feb-09 23:47

Jon Hulatt

23-Feb-09 23:47

Hi all,

I have a custom winforms control. I want to be able to use anchor/dock type functionality in the form which hosts it, to facilitate dynamic resizing. Only thing is, my control must be square (ie width==height) to render properly.

how can i force this to be the case?

Thanks

Jon

using System.Beer;

Re: force winforms custom control to be square

Rob Philpott23-Feb-09 23:49

Rob Philpott

23-Feb-09 23:49

have you tried ensuring that Width and Height = Math.Min(Width, Height) in the Resize event? Not sure if that'll do what you want but its where I'd start.

Regards,
Rob Philpott.

Re: force winforms custom control to be square

#realJSOP24-Feb-09 0:16

#realJSOP

24-Feb-09 0:16

You can't use dock and have the control retain its shape. What you're going to have to do is use anchor, and handle the form's resize event to modify the size and position of the control.

"Why don't you tie a kerosene-soaked rag around your ankles so the ants won't climb up and eat your candy ass..." - Dale Earnhardt, 1997
-----
"...the staggering layers of obscenity in your statement make it a work of art on so many levels." - Jason Jystad, 10/26/2001

Re: force winforms custom control to be square

benjymous24-Feb-09 1:28

benjymous

24-Feb-09 1:28

You could host your control in a parent control. Dock the parent control, and in its resize handler do something like child.size = min( this.width, this.height ) (and recentre it in the parent if desired)

Help me! I'm turning into a grapefruit!
Buzzwords!

Mail using Microsoft Exchange server

Ramkithepower23-Feb-09 23:45

Ramkithepower

23-Feb-09 23:45

Hi ,

I need help in creating a program to send a mail using Microsoft Exchange server not SMTP. Previously I created a DTS package with a send mail task in it. It seemed to work properly in my local system where I had my MS oulook configured. But it failed in the server since it does not have a local profile configured.

If any one is able to answer to either of the above problem would be grateful.

Jack Sparrow
--------------------------------------
Defeat is not the worst of failures. Not to have tried is the true failure.

Drag Drop event of RichText Box in c#.net

Lijo Rajan23-Feb-09 23:11

Lijo Rajan

23-Feb-09 23:11

Hi all,

Can anyone tell me that how to fire drag drop event in richtext box in C#.net??

Thanks in advance
Lijo

Re: Drag Drop event of RichText Box in c#.net

Calin Tatar24-Feb-09 0:47

Calin Tatar

24-Feb-09 0:47

Basically, you have to set AllowDrop property to true, and use DragEnterevent and DragOver

Calin

Re: Drag Drop event of RichText Box in c#.net

Lijo Rajan24-Feb-09 1:00

Lijo Rajan

24-Feb-09 1:00

But in .net 2.0 i am not able to find out drag drop and drag enter event for rich text box??so how can i get it??

Regards
Lijo

Re: Drag Drop event of RichText Box in c#.net

Calin Tatar24-Feb-09 1:05

Calin Tatar

24-Feb-09 1:05

Look at .net 2.0 api reference, its there:

http://msdn.microsoft.com/en-us/library/system.windows.forms.richtextbox.dragover(VS.80).aspx[^]

Calin

Re: Drag Drop event of RichText Box in c#.net

Calin Tatar24-Feb-09 1:08

Calin Tatar

24-Feb-09 1:08

you are saying that the events are not browsable from the Properties, right?

Try by extending the RichTextBox.

Calin

Re: Drag Drop event of RichText Box in c#.net

Lijo Rajan24-Feb-09 1:24

Lijo Rajan

24-Feb-09 1:24

Hi ,
I am new to windows application. so i dont have much idea about this.Can u please explain me how it can be done?

Regards
Lijo

Re: Drag Drop event of RichText Box in c#.net

Calin Tatar24-Feb-09 1:30

Calin Tatar

24-Feb-09 1:30

Actually, you don't need to have the events in the properties window, you may handle the events like this:

public Form1()
        {
            InitializeComponent();
            richTextBox1.DragDrop += new DragEventHandler(richTextBox1_DragDrop);
            richTextBox1.DragEnter += new DragEventHandler(richTextBox1_DragEnter);

        }

        void richTextBox1_DragEnter(object sender, DragEventArgs e)
        {
            throw new Exception("The method or operation is not implemented.");
        }

        void richTextBox1_DragDrop(object sender, DragEventArgs e)
        {
            throw new Exception("The method or operation is not implemented.");
        }

Calin

Re: Drag Drop event of RichText Box in c#.net

Lijo Rajan24-Feb-09 1:59

Lijo Rajan

24-Feb-09 1:59

Thank you....

regards
Lijo

Execute a *.bat file in C# project

CodingLover23-Feb-09 22:25

CodingLover

23-Feb-09 22:25

Hi all,

On the release mode only, when build the project I want to execute a bat file. That bat file do another process.

What I've try is add the bat file name as the command argument in project property as pre-build event command line.

But it not works for me. Can anyone comments on this.

Thanks you.

I appreciate your help all the time...
CodingLover Smile | :)

Re: Execute a *.bat file in C# project

Ajit Shekhawat23-Feb-09 22:47

Ajit Shekhawat

23-Feb-09 22:47

May be this works, because author is executing bat file in this article using post build event.
http://www.highoncoding.com/Articles/398_Using%20Post-Build%20Event%20to%20Execute%20Unit%20Tests.aspx[^]

Re: Execute a *.bat file in C# project

ABitSmart23-Feb-09 23:34

ABitSmart

23-Feb-09 23:34

Something like this,

if $(ConfigurationName) == Release yourbatchfile.bat

Re: Execute a *.bat file in C# project

CodingLover24-Feb-09 0:07

CodingLover

24-Feb-09 0:07

Actually I don;t want to run the project. Only in the build, compile, I want to run the .bat file.

I've set the properties on post-build event command line as follows.

call $(ProjectDir)build_help.bat

It calls the bat file correctly. But it's not execute. bat content like this.

echo compiling help documentation<br />
"C:\Program Files\HTML Help Workshop\hhc.exe" Help.hhp<br />
echo done.

error is,

Unable to open Help.hhp

But when I double click on the bat file it works fine.

I appreciate your help all the time...
CodingLover Smile | :)

Re: Execute a *.bat file in C# project

ABitSmart24-Feb-09 0:29

ABitSmart

24-Feb-09 0:29

Try specifying the file path for "Help.hhp", absolute path
or place "Help.php" in the release/debug folder(whichever you are currently building on)

Re: Execute a *.bat file in C# project

CodingLover24-Feb-09 0:42

CodingLover

24-Feb-09 0:42

Seems it's fine. But now the case is I've to place all html files and stuff in bin folder too.

I appreciate your help all the time...
CodingLover Smile | :)

Re: Execute a *.bat file in C# project

ABitSmart24-Feb-09 0:45

ABitSmart

24-Feb-09 0:45

You can copy then back to where you want with a batch file Big Grin | :-D

Did it not work with an absolute path ?

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