C# Discussion Boards - CodeProject

Re: need help with listbox

tom_dx4-Dec-04 14:03

tom_dx

4-Dec-04 14:03

nvm i remember how to do listBox1.Items[index] returns the strin lol

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Shape moving across screen HELP!

...---...4-Dec-04 11:47

...---...

4-Dec-04 11:47

How do I simply get a shape (say a triangle, or circle ) to move at at some visible rate across a windows form?
As an alternative: How would I get a character to move across a Console Window.

Would like to write a simple game, I sure would appreciate some help - thanks

C# only......

Re: Shape moving across screen HELP!

tom_dx4-Dec-04 13:05

tom_dx

4-Dec-04 13:05

why? anyways there are two ways to do the circle, at least that i can think of, first you probably know gdi+ i recommend learning it, create it using that but i dont know how efficient it would be and add a timer so that every tick would change the location, another way is to create a picturebox and add a picture of a circle to it then change its location every second or so...
for the console its a little simpler (i understood the circle moving across the screen so) just add a space every second or ms or whatever you want to do..;P

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Re: Shape moving across screen HELP!

thepersonof5-Dec-04 4:48

thepersonof

5-Dec-04 4:48

If you're willing to do directx look at drunkenhyena.com

Re: Shape moving across screen HELP!

Anonymous5-Dec-04 11:08

Anonymous

5-Dec-04 11:08

Tom,
Thanks for your advice. Went to the website and it makes about as much sense to me as a book written in Cyrillic about 5th Century gypsy dogs- but thanks again....

Re: Shape moving across screen HELP!

Stanciu Vlad5-Dec-04 5:45

Stanciu Vlad

5-Dec-04 5:45

I recomand you to put on the window a drawing zone (say a panelBox), and get it's Graphics object (control.CreateGraphics()). now use this Graphics object to do your drawind.
A basic animation algorithm is described by the following steps :
1. draw your image
2. pause a little the screen
3. clear the screen and jump to step 1
Of course this algorithm is a rudimentary one, now all drawing is made using double buffer (do drawing into memory and then put on the screen)

I hope you understand...
By the way... visit http://nehe.gamedev.net[^]

Catching Stack Unwinding

tbpub4-Dec-04 9:12

tbpub

4-Dec-04 9:12

I've installed a global exception handler and it uses the Exception Management Block. I get lovely stack traces, and I've written a custom publisher that takes a full MiniDump to analyze with sos.dll, but my code is called after the stack is unwound, so I can't get the values of any parameters for unwound methods.

Is there a way to register a "custom stack unwinder" to see what data on the stack *was* before the exception is caught? It would aid in debugging.

All I can think of now is manually including a try...finally, set a flag to true in the last statement of the try block, and in the finally block if that flag is not set then collect the locals and stack variables.

LDAP Query Using Directory Services

Member 7756734-Dec-04 6:33

Member 775673

4-Dec-04 6:33

I need a little help. I am doing an LDAP query in C# using directory services and returning the attribute names and values for a user. For some of the attributes, accountexpires for example, the string representation of the value is System.__ComObject. How do I get the actual date?

Bill

video conf.

Sakkijha4-Dec-04 4:28

Sakkijha

4-Dec-04 4:28

Hi every 1,

i want to make a simple network project that send data and video to a client and i need help coz i never create a network project before and i don't know how to use the socket's.

Any 1 can help me ????? "a code may help me 2 understand"

Re: video conf.

tom_dx4-Dec-04 13:07

tom_dx

4-Dec-04 13:07

that's a big job especially for someone who never used sockets, anyways do you want to do the video in realtime? consider just sending the client program a copy of the video and then play it. there are tons of articles on sockets on this site.. also try msdn.microsoft.com[^]

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FileStream : Problem in Reading File

Zishan Haider4-Dec-04 2:45

Zishan Haider

4-Dec-04 2:45

hello,

I have a FileStream object in an OnChange event. Everytime OnChange is called, the code goes like this :

private void OnChanged(object source, FileSystemEventArgs e)
{

byte [] data = new byte[100];
try
{
fs.Read(data,offSet,fs.Length-offSet);
offSet = fs.Length;
changedText = trim(Encoding.ASCII.GetString(data));
doOperations(changedText);
}
catch(Exception ee)
{}

}

Now suppose on first OnChange call, 50 bytes were read, filling up the byte array (data) from index 0 to 49. The Problem starts on the next OnChange call. It continues to fill my byte array from 50 onwards, which finally results in the System.ArgumentException, when it reaches the array length 100. I need my byte array to be filled from 0 everytime OnChange is called. How can I do it?

regards
Zishan

Re: FileStream : Problem in Reading File

Stanciu Vlad4-Dec-04 8:24

Stanciu Vlad

4-Dec-04 8:24

lose the offset thing
look at msdn FileStream Read method :

[C#]
public override int Read(
   [In,Out] byte[] array,
   int offset,
   int count
);

Parameters
*array 
 When this method returns, contains the specified byte array with the values between offset and (offset + count - 1) replaced by the bytes read from the current source. 
*offset 
 The byte offset in array at which to begin reading. 
*count 
 The maximum number of bytes to read. 
Return Value
 The total number of bytes read into the buffer. This might be less than the number of bytes requested if that number of bytes are not currently available, or zero if the end of the stream is reached.

I hope you understand...
By the way... visit http://nehe.gamedev.net[^]

Translation matrix and roation angle

montu33774-Dec-04 2:10

montu3377

4-Dec-04 2:10

HI,

Here from some 2-3 days i am facing some sort of problem in rotation image.
situation is like that:
there is a image (scanned ractangle) and its any where at A4 size page.I have to put that image on (0,0) of the A4 size page,so for that
i have to find out that what is rotation angle and Transformation angle
becoz by that i can rotate and translate my image and put it on my place(that is 0,0).

i got rotation angle perfactly ok.No problem but can some body tell me about how to find out translation matrix?
i am tring with translatetransform in matrix but i am slighly confused with matrix so can any body help me out in finding translation matrix.

thanks in advance.

regards,
montu3377

Re: Translation matrix and roation angle

tom_dx4-Dec-04 13:09

tom_dx

4-Dec-04 13:09

are you using managed dx?

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Re: Translation matrix and roation angle

Alex Korchemniy4-Dec-04 16:46

Alex Korchemniy

4-Dec-04 16:46

I believe he is talking about System.Graphics not dx. Please answer the question since I don't have much time.

This posting is provided "AS IS" with no warranties, and confers no rights.

Alex Korchemniy

Re: Translation matrix and roation angle

montu33774-Dec-04 20:06

montu3377

4-Dec-04 20:06

Hi ,

yeah i am talking about System.Drawing and I am using Matrix.TranslateTransform method for finding out the Translation required for the Rectangle.
Can any one know that how to findout the Translation in System.Drawing by using Matrix.TranslateTransform method.

There is littlebit confusion in finding the Translation of Rectangle so that's why i need help.

regards,
montu3377

Scrolling RichTextBox

Toximus4-Dec-04 1:20

Toximus

4-Dec-04 1:20

I need textbox control wich automaticaly scroll down after the text in it has changed, but I don't know how exactly I could implement it.
D'Oh! | :doh:

If you have any idea please write.

Toximus

Re: Scrolling RichTextBox

leppie4-Dec-04 2:29

leppie

4-Dec-04 2:29

Search the forums, I have recently posted a solution...

^{top secret
Download xacc-ide 0.0.3 now!
See some screenshots}

Re: Scrolling RichTextBox

Toximus4-Dec-04 23:48

Toximus

4-Dec-04 23:48

I couldn't find solution ...
Do you remember date or title?

xacc is quite impressive but it has some bugs

Toximus

Re: Scrolling RichTextBox

leppie5-Dec-04 7:33

leppie

5-Dec-04 7:33

http://www.codeproject.com/script/comments/forums.asp?msg=972799&forumid=1649#xx972799xx[^]

^{top secret
Download xacc-ide 0.0.3 now!
See some screenshots}

BackGround Windows Form

camposeo793-Dec-04 23:44

camposeo79

3-Dec-04 23:44

Hi.
How can I remove a background Image of Windows form?
The background setted by property "this.backgrounImage".
Thanks

Re: BackGround Windows Form

Robert Rohde4-Dec-04 8:28

Robert Rohde

4-Dec-04 8:28

You could try:

this.BackgroundImage = null;

Re: BackGround Windows Form

Alex Korchemniy4-Dec-04 16:43

Alex Korchemniy

4-Dec-04 16:43

Right click "reset". Assuming that you are using Vs.net

This posting is provided "AS IS" with no warranties, and confers no rights.

Alex Korchemniy

Not all files are removed, when the program is uninstalled

Bjoern.adG3-Dec-04 23:00

Bjoern.adG

3-Dec-04 23:00

Hallo,

while performing, my program serializes some data into files. My problem is, that these files are not deleted when the program is uninstalled.

Is there any property in the setup project which can achieve that?

Thanks for your help,
Björn

Re: Not all files are removed, when the program is uninstalled

Daniel Turini3-Dec-04 23:08

Daniel Turini

3-Dec-04 23:08

You can create a DLL with a custom installer (a "custom action") and, on the UnInstall method, you remove the files.
Read the System.Configuration.Install.Installer docs for more information about this.

Yes, even I am blogging now!

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