C# Discussion Boards - CodeProject

Dio2224-Sep-07 4:13

24-Sep-07 4:13

Can anyone link me to a good article/resource explaining how to marshall different data types, specifically from C++ to C#. I'm trying to marshall some stuff going to/from a DLL.

Re: Marshalling C++/C#

Judah Gabriel Himango24-Sep-07 4:46

Judah Gabriel Himango

24-Sep-07 4:46

There are several articles on this site detailing how to do this. Basically, for standard exported C functions, you can use P/Invoke. If you're interesting in interoping with C++ classes things other than standard C exported functions, you'll probably want to write a wrapper for the C++ classes in C++/CLI, which can them be called natively by C#. (Again, check the articles on this site for info on C++/CLI interop with C#)

Tech, life, family, faith: Give me a visit.
I'm currently blogging about: Sound The Great Shofar!
The apostle Paul, modernly speaking: Epistles of Paul

Judah Himango

How can I implement the executing when turning on the computer during the deployment

joypain24-Sep-07 3:48

joypain

24-Sep-07 3:48

there seems to be some code to operate the registrykey(add a key in "HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run"),but how can I use these codes or where can I use them in the deployment project. and in the deployment project,there is also registry management in the deployment,can I set the attributes to implement the executing of the application when turning on the computer.

joypain

Re: How can I implement the executing when turning on the computer during the deployment

BoneSoft24-Sep-07 4:36

BoneSoft

24-Sep-07 4:36

I think you answered your own question there... The Deployment project's registry editor.

Try code model generation tools at BoneSoft.com.

Re: How can I implement the executing when turning on the computer during the deployment

joypain25-Sep-07 6:43

joypain

25-Sep-07 6:43

I add a new item in HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\
CurrentVersion\Run,and then I add a key, and set the key value to the path of the application,can it work?
by the way how can I get the path of the application in the registry editor and write it to the keyvale?

joypain

Re: How can I implement the executing when turning on the computer during the deployment

BoneSoft25-Sep-07 7:28

BoneSoft

25-Sep-07 7:28

Looking at the properties of the Application Folder in File System, the default location is probably something like this...

[ProgramFilesFolder][Manufacturer]\[ProductName]

which is equal to this...

[TARGETDIR]

I don't know of a way to get the EXE's name, but you should know what that is anyway. So add your reg string with a value like this...

[TARGETDIR]myExe.exe

Try code model generation tools at BoneSoft.com.

Re: How can I implement the executing when turning on the computer during the deployment

joypain26-Sep-07 5:39

joypain

26-Sep-07 5:39

"[TARGETDIR]" works! Smile | :)

I've been searching on the internet and msdn for a few days to solve the problem.Thank you for your guide!

joypain

Re: How can I implement the executing when turning on the computer during the deployment

BoneSoft26-Sep-07 5:53

BoneSoft

26-Sep-07 5:53

Sure. I wish I could find a list of all the variables that are available, but those are the only 4 I'm aware of. That may be all of them.

Try code model generation tools at BoneSoft.com.

how to make screen

lockepeak24-Sep-07 3:38

lockepeak

24-Sep-07 3:38

I computer use XP ,I want to my program interface can cover the XP system deskface. how can I do ?

Re: how to make screen

MaxRelaxman24-Sep-07 3:51

MaxRelaxman

24-Sep-07 3:51

I recommend the following two books

For C# Programming:
http://www.amazon.com/Programming-C-Building-NET-Applications/dp/0596006993/ref=pd_bbs_sr_1/103-9225262-2411817?ie=UTF8&s=books&qid=1190641792&sr=8-1[^]

And for your other issue:
http://www.amazon.com/Deluxe-Transitive-Vampire-Handbook-Innocent/dp/0679418601/ref=pd_bbs_sr_1/103-9225262-2411817?ie=UTF8&s=books&qid=1190641863&sr=1-1[^]

Re: how to make screen

BoneSoft24-Sep-07 4:33

BoneSoft

24-Sep-07 4:33

Try code model generation tools at BoneSoft.com.

Using unmanaged code (C)

Yaron avital24-Sep-07 3:18

Yaron avital

24-Sep-07 3:18

Hi All

I would like to use a DLL written in C, in my .Net 2.0 win application.
I’ve tried using DllImport, but I’ve encountered the following exception:
“Attempted to read or write protected memory. This is often an indication that other memory is corrupt.”

Probably because I didn’t declare the function right.

The DLL function I’m trying to use is:
extern "C" __declspec(dllexport) void EncryptString(char* inString, int strSize, char* ret)

What should be the .Net equivalent?

Thanks in advance
Yaron.A

Re: Using unmanaged code (C)

Malcolm Smart24-Sep-07 3:33

Malcolm Smart

24-Sep-07 3:33

stringbuilders are used to marshal strings that get changed by the unmanaged code..

try

<br />
[DllImport(@"YOUR.DLL")]<br />
public static extern void EncryptString(String inString , int strSize , System.Text.StringBuilder result);<br />

this is assuming the first parameter won't be changed.

"More functions should disregard input values and just return 12. It would make life easier." - comment posted on WTF

"This time yesterday, I still had 24 hours to meet the deadline I've just missed today."

Re: Using unmanaged code (C)

Yaron avital24-Sep-07 3:52

Yaron avital

24-Sep-07 3:52

Works like a charm, i've spent hours to figure out this one.

THANKS Malcolm!

Re: Using unmanaged code (C)

Malcolm Smart24-Sep-07 3:59

Malcolm Smart

24-Sep-07 3:59

A pleasure.

Serialization Problem

stancrm24-Sep-07 2:44

stancrm

24-Sep-07 2:44

Hello...

I have a problem. For example :

public class MyClass
{
  public int A = 1;
  public int B = 2;
  public int C = 3;
}

If I serialize that class, I want to serialize A and B only. I don't want to serialize C.
Are there any possibilities to do that ?

I'm using XmlSerializer.

Thanks...

Re: Serialization Problem

Ravi Bhavnani24-Sep-07 2:57

Ravi Bhavnani

24-Sep-07 2:57

Use the XmlIgnore attribute to prevent specific public properties from being serialized.

/ravi

This is your brain on Celcius
Home | Music | Articles | Freeware | Trips
ravib(at)ravib(dot)com

Re: Serialization Problem

BoneSoft24-Sep-07 4:32

BoneSoft

24-Sep-07 4:32

Ravi's response will take care of your problem, but if you want further information I have an article on XmlSerializer attributes[^] that should help out.

Try code model generation tools at BoneSoft.com.

how to Access to Other form when it's still in "Show()"?

combo_ci24-Sep-07 2:40

combo_ci

24-Sep-07 2:40

hi my project have 2 form and i call show() method to showing Form2
i want to pass a parameter (or property) to form2 when it showing or
find that form2 is close or show in form1 Confused | :confused:

Does anyone know how i can do this action?

Thanks;

Re: how to Access to Other form when it's still in "Show()"?

Justin Perez24-Sep-07 2:55

Justin Perez

24-Sep-07 2:55

I think I understand your question, try using ShowDialog() instead of Show(). If I don't understand your question, reply with more details.

I get all the news I need from the weather report - Paul Simon (from "The Only Living Boy in New York")

Re: how to Access to Other form when it's still in "Show()"?

Ravi Bhavnani24-Sep-07 3:00

Ravi Bhavnani

24-Sep-07 3:00

Declare private fields for the properties in Form2 and set them when you construct the form. For example:

Form2 f2 = new Form2 (prop1, prop2, etc.)
f2.Show();

/ravi

This is your brain on Celcius
Home | Music | Articles | Freeware | Trips
ravib(at)ravib(dot)com

Re: how to Access to Other form when it's still in "Show()"?

combo_ci24-Sep-07 6:16

combo_ci

24-Sep-07 6:16

hi
my project have 2 forms ...in form 1 i have a button and button1_Click is

private void button1_Click(object sender, EventArgs e)
{
this.DesktopLocation = new Point(DesktopLocation.X - 200, DesktopLocation.Y);

new Form2(this.DesktopLocation.X + this.Width, this.DesktopLocation.Y).Show();
}

now form2 is Show() and i want to know IN FORM1 that form2 is close or still running ....
and when form2 is close event or property fire in form1 to Form1.DesktopLocation return to orginl location...

here is source code of my project[]

Does anyone know how i can do this action?

Thanks;

Re: how to Access to Other form when it's still in "Show()"?

I Believe In GOD24-Sep-07 11:44

I Believe In GOD

24-Sep-07 11:44

Hi
Declare in form1

public static bool IsForm2Closed;

now in form2 add at closing event this line

form1.IsForm2Closed = true;

thus , you can query about the var IsForm2Closed from form1 Timer , button or such

bye

I know nothing , I know nothing

Help File integration

Muhammad Nauman Yousuf24-Sep-07 2:38

Muhammad Nauman Yousuf

24-Sep-07 2:38

Dear All,

I tried searching CP for some relevant answer as to "How to integrate a help (.chm) file with my dot.net application).

Any comments / suggestion / solutions ...

Thank you!
Nauman

"Mess with the Best, Die like the rest"

Re: Help File integration

Justin Perez24-Sep-07 2:50

Justin Perez

24-Sep-07 2:50

On install of your software put it into the same directory as the your executeable. Or not, doesn't matter, just know where you put it. Build a string for the directory of the file, and show it like this:

<br />
Help.ShowHelp(this, strHelpFilePath, "Introduction.htm");

I get all the news I need from the weather report - Paul Simon (from "The Only Living Boy in New York")

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.