Re: Detour 2.1 with C# - C# Discussion Boards

Re: Any difference between returning an object and changing an object passed into a static function?

Christian Graus3-Jun-07 17:09

3-Jun-07 17:09

Any concerns you may have remain the same in either case, ultimately I'd go with the second for clarity, but so long as it's all running in the same thread, which it is here, I don't see any thread safety concerns. The second approach does allow the method to create the object whenever it likes, the first means it always exists.

The first would be better represented with the out keyword, seeing as you expect the value to be assigned, and not just read. Stupid C# doesn't have const, but you can make your code clear by using the out keyword.

Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog
"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )

charecter input system function

sonavi3-Jun-07 14:48

sonavi

3-Jun-07 14:48

i want the reference for the charecter input system function code which is simmilar to windows operating system.

Please provide me the reference

Help Ever Hurt Never

Re: charecter input system function

Christian Graus3-Jun-07 14:59

Christian Graus

3-Jun-07 14:59

You've asked this several times now. Surely you realise that anyone who knows what the windows code is, probably isn't allowed to show it to you ?

Even if I had the Windows source, and was able to share it, I would honestly have no idea what part of it you want to know about, based on how you word your question. You want to know how the textbox works ? How the keyboard is monitored ? How the console shows key preses ? I have no idea.

Save PDF file as image

There is always the way to do it, but I don't know3-Jun-07 14:22

There is always the way to do it, but I don't know

3-Jun-07 14:22

What is the best way to save currently opened PDF file as image in sql database?

Re: Save PDF file as image

xibeifeijian3-Jun-07 14:35

xibeifeijian

3-Jun-07 14:35

Look the TEXTPTR function in SQLServer's help.You may find the answer.

▒▒〓▒〓▒▒

▒〓〓〓〓〓▒

▒▒〓▒〓▒▒

▒〓〓〓〓〓▒

▒▒〓▒〓▒▒

Re: Save PDF file as image

Christian Graus3-Jun-07 14:46

Christian Graus

3-Jun-07 14:46

do you mean as a bitmap, or as a binary file ? SQL Server doesn't care what the file type is, it just stores the bytes.

Detour 2.1 with C#

xpir3-Jun-07 12:49

xpir

3-Jun-07 12:49

Is there a way to use Detours (http://research.microsoft.com/sn/detours/[^]) with C# ?

I tried to load the dll directly to C# project and it faild.
I could write the project in C++ and solve this issue (i'm new to C#), but would rather do it in C#, so i be able to integrate CScript engine to my project.

Re: Detour 2.1 with C#

Christian Graus3-Jun-07 12:57

Christian Graus

3-Jun-07 12:57

The way to call methods in a C++ dll from C# is pinvoke. www.pinvoke.net has heaps of examples of calling existing Win32 APIs, which should give you a clear idea of the syntax required.

"Main" method

SPRC3-Jun-07 8:35

SPRC

3-Jun-07 8:35

I understand why the "Main" method needs to be in a class. But it appears that the name of that class can be pretty much anything! Is there some generally accepted name that is used most frequently for the "Main" containing class? I guess C# will find the "Main" method no matter what - yes?

Re: "Main" method

Christian Graus3-Jun-07 11:23

Christian Graus

3-Jun-07 11:23

SPRC wrote:
I guess C# will find the "Main" method no matter what - yes?

Yes, and typically, the point is that you don't need a class just to have that main method in there, it gets added usually to the first form class that is shown by your app.

Loged in user Information?

Gul_#3-Jun-07 8:09

Gul_#

3-Jun-07 8:09

How can I get information about user that is currently log on on windows Xp through web.

i.e A user access a particular page 'XYZ.com' then in response the page opens with user name 'ABC'

Re: Loged in user Information?

andre_swnpl3-Jun-07 20:08

andre_swnpl

3-Jun-07 20:08

You can't realy. The best you can do is to call HttpRequest.LogonUserIdentity.

Web application

mushy3-Jun-07 7:27

mushy

3-Jun-07 7:27

Created Logon Screen using integrated authentication, How to get Uncpath of Home directory so that user can access their home folders from home for remote downloading and uploading

thnks

Re: Web application

Christian Graus3-Jun-07 11:25

Christian Graus

3-Jun-07 11:25

Your main issue will be that an ASP.NET application doesn't have permission to access the file system above it's root. What do yuo mean by Uncpath of home directory ? What do you mean by 'access their home folders from home' ? Do you mean that you are writing a web app which will run on the home machine and give a user access to that machine remotely ?

string class handling.... aligment etc...

Arish rivlin3-Jun-07 5:48

Arish rivlin

3-Jun-07 5:48

hi.
I need to concut a string in C# so that it will be aligned to the left.
for example:

dd/mm/yyy message1 line
dd/mm/yyy message222 line
dd/mm/yyy message566455 line

etc...
note: it's not possible here but the intention was for all the "line"s to be one on top of the other....
Thanks....

Re: string class handling.... aligment etc...

Luc Pattyn3-Jun-07 5:59

Luc Pattyn

3-Jun-07 5:59

strings are aligned to the left (at least if you write from left to right).

if you are painting to the screen, it may help to choose a "non-proportional" font,
such as "Courier New" so all characters have the same width;
maybe you want a DateTime format that applies leading zeroes,
and you might show your message number using a fixed number of digits:
num.ToString("000000") will generate at least 6 characters, using leading zeroes.

If you are painting on a Graphics, you can use MeasureString() to get the string
width in pixels, and adjust coordinates accordingly (but that would be useful only
if you do NOT want to align to the left).

Hope this helps.

Smile | :)

Luc Pattyn

[My Articles] [Forum Guidelines]

c# - protected and protected internal

jon-803-Jun-07 5:18

jon-80

3-Jun-07 5:18

A newbie question:

protected
Access is limited to the containing class or types derived from the containing class

protected internal
Access is limited to the current assembly or types derived from the containing class.

(MSDN)

What does 'assembly' refer to? Is it the same application or the same class?

protected internal combines protected and internal, but in an OR sense, not an AND sense (pro c#).

What does this mean?

Jon

Re: c# - protected and protected internal

WillemM3-Jun-07 6:02

WillemM

3-Jun-07 6:02

jon_80 wrote:
What does 'assembly' refer to? Is it the same application or the same class?

This is the same unit of code that is place on disk. In normal language: This is the .exe or .dll file in which the class sits.

jon_80 wrote:
protected internal combines protected and internal, but in an OR sense, not an AND sense (pro c#).

You can only access a protected internal member, if you inherit from that class and you are in the same assembly. I think the book is wrong here, as you can't access protected members even if they are also internal. Might want to reread that part, because I'm pretty sure they didn't mean it that way.

WM.

What about weapons of mass-construction?
"What? Its an Apple MacBook Pro. They are sexy!" - Paul Watson

Re: c# - protected and protected internal

Dave Doknjas3-Jun-07 12:48

Dave Doknjas

3-Jun-07 12:48

The book is right - protected internal means "protected OR internal" - the member can be accessed within the same assembly OR in any derived type, even if that derived type is outside of the assembly.

David Anton
www.tangiblesoftwaresolutions.com
Instant C#: VB to C# converter
Instant VB: C# to VB converter
C++ to C# Converter: converts C++ to C#
Instant C++: converts C# to C++/CLI and VB to C++/CLI
Instant Python: converts C# to IronPython and VB to IronPython

Re: c# - protected and protected internal

Expert Coming3-Jun-07 6:02

Expert Coming

3-Jun-07 6:02

An assembly in .NET is one of two things, the .EXE file you make when you compile, or the .DLL file. So an assembly is the whole application, not just a class.

To answer your other question I'll have to define internal as well.

protected is an access modifier that limits access to the current class or classes derived from the current class.

internal is an access modifier that limits access only to the currect assembly.

protected internal is an access modifier that limits access to only derived classes in the current assembly.

The best way to accelerate a Macintosh is at 9.8m/sec² - Marcus Dolengo

Re: c# - protected and protected internal

originSH3-Jun-07 21:59

originSH

3-Jun-07 21:59

Nope, as David said in a comment above 'proteced internal' means protected OR internal.

Loading a bitmap into an ImageList

Mark F.3-Jun-07 3:35

Mark F.

3-Jun-07 3:35

I have a single bitmap image that is comprised of 16 images (like a toolbar bitmap). I use the following to load the image into my imagelist.

Image img = Image.FromFile("jsiml.bmp");
 treeViewImageList.Images.AddStrip(img);

The problem is that the bitmap file must always be in the application folder. How can I add the bitmap as a resource and load the resource?

TIA,
Mark

Re: Loading a bitmap into an ImageList

Luc Pattyn3-Jun-07 3:46

Luc Pattyn

3-Jun-07 3:46

Hi,

Visual can show you how to do this.
Example: add an icon to your app, look at what code gets generated.

Smile | :)

Luc Pattyn

[My Articles] [Forum Guidelines]

Re: Loading a bitmap into an ImageList

Mark F.3-Jun-07 4:45

Mark F.

3-Jun-07 4:45

I see what you mean. Anyway I used the following which works.

Image img = (Bitmap)JsLib.Properties.Resources.jsiml;
treeViewImageList.Images.AddStrip(img);

I also had to change the "Build action" property for the bitmap to "Embedded resource".

Mark

Re: Loading a bitmap into an ImageList

Luc Pattyn3-Jun-07 5:10

Luc Pattyn

3-Jun-07 5:10

That's fine.

Luc Pattyn

[My Articles] [Forum Guidelines]

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