C# Discussion Boards - CodeProject

Re: How to simulate map c++ collection in c#

Heath Stewart11-Jan-04 10:30

Heath Stewart

11-Jan-04 10:30

See System.Collections.Hashtable.

-----BEGIN GEEK CODE BLOCK-----
Version: 3.21
GCS/G/MU d- s: a- C++++ UL@ P++(+++) L+(--) E--- W+++ N++ o+ K? w++++ O- M(+) V? PS-- PE Y++ PGP++ t++@ 5 X+++ R+@ tv+ b(-)>b++ DI++++ D+ G e++>+++ h---* r+++ y+++
-----END GEEK CODE BLOCK-----

Windows Messages

Stefan Troschuetz11-Jan-04 3:30

Stefan Troschuetz

11-Jan-04 3:30

Does anyone know how i can send messages to other windows applications. For example to tell the media player to start playing a file.

Re: Windows Messages

Niels Penneman11-Jan-04 3:34

Niels Penneman

11-Jan-04 3:34

API call: SendMessage

greetz Wink | ;-)

*Niels Penneman*

Software/Dev Site
Personal Site

Re: Windows Messages

Heath Stewart11-Jan-04 11:41

Heath Stewart

11-Jan-04 11:41

To expand on what Niels said, you'll want to P/Invoke that API:

[DllImport("user32.dll")]
private static extern IntPtr SendMessage(
  IntPtr hWnd,
  uint msg,
  IntPtr wParam,
  IntPtr lParam);

There are some shortcuts, too. If a param takes an address of a struct, rather than make several unsafe calls from the System.Runtime.InteropServices namespace, you can instead overload SendMessage. For instance, the TVM_SETITEM message for a TreeView Common Control (which System.Windows.Forms.TreeView encapsulates) requires the address of an <code>LPTVITEM for the lParam. You could overload SendMessage like so:

[DllImport("user32.dll")]
private static extern IntPtr SendMessage)
  IntPtr hWnd,
  uint msg,
  IntPtr wParam,
  ref LVITEM lvItem);

You'll still have to define the LVITEM struct, but this is pretty easy to do. See more information about that in the StructLayoutAttribute documentation.

Running Applications

Paragass11-Jan-04 2:09

Paragass

11-Jan-04 2:09

How can I get the list of the running applications in my PC,using C#?

Thanks

Re: Running Applications

Mazdak11-Jan-04 2:36

Mazdak

11-Jan-04 2:36

You can get with System.Management namespace. Check this article:

Windows Management Instrumentation (WMI) Implementation[^]

Mazy

No sig. available now.

Re: Running Applications

Paragass11-Jan-04 6:44

Paragass

11-Jan-04 6:44

Thank you very much, but in the article you posted I only found how to get running processes, I need to get the applications, like in the first Window in Windows Task Manager.
I searched a lot in CodeProject, but I didn't find nothing really usefull.

Thanks anyway, the article is very interesting

Re: Running Applications

Niels Penneman11-Jan-04 11:13

Niels Penneman

11-Jan-04 11:13

What about this:

get the processes System.Diagnostics.Process.GetProcesses()

then show only the ones with MainWindowHandle != ItPtr.Zero

and check if they have a MainWindowTitle Smile | :)

greetz

*Niels Penneman*

Software/Dev Site
Personal Site

Virtual Screenscraper Question

TuringTest110-Jan-04 20:45

TuringTest1

10-Jan-04 20:45

ok, so how would you googlefish for an answer to the following screen scraper question:

how do i get a bitmap of a "virtual" control, that is what the control would look like but without showing it on the screen?

TIA!

________________________________________

Gosh, it would be awful pleas'n, to reason out the reason, for things I can't explain.
Then perhaps I'd deserve ya, and be even worthy of ya..
if I only had a brain!

Re: Virtual Screenscraper Question

Mazdak11-Jan-04 9:46

Mazdak

11-Jan-04 9:46

I hope I understand your question correctly,Check this link,it show you how to capture the screen,then you can get part of image you want.

http://www.codeproject.com/csharp/cscapturescreen1.asp[^]

Mazy

No sig. available now.

Re: Virtual Screenscraper Question

TuringTest111-Jan-04 19:50

TuringTest1

11-Jan-04 19:50

Mazy, thanks. The question i want answered was eloquently stated re the article you sent (see below). Unfortunately there was no answer posted-- does anyone know the answer?

TIA!

HERE IS stantheman's question (and mine):

Greetings all,

I dig Agha Ali Raza’s article (Capturing the Screen Image in C#), but what I want to do is capture the image before it hits the screen.

How would I do this?

In essence, I would like to take a screen-shot (bitmap) of a Form *before* it ever gets to the screen.

If you’re interested, - what I want to do is perform a little “graphics-magic” on the image using GDI+ - I want to “dance” the image of the Form around the screen before I present the actual Form. And I don’t know how to do this. I’ve tried overloading the Form.OnPaint method, but I just don’t seem to be getting it right.

Anyone?

Thanks all,

- Stan Shankman

http://www.codeproject.com/csharp/csCaptureScreen1.asp?msg=435733#xx435733xx

________________________________________

Gosh, it would be awful pleas'n, to reason out the reason, for things I can't explain.
Then perhaps I'd deserve ya, and be even worthy of ya..
if I only had a brain!

what compiler?

OCARA10-Jan-04 17:43

OCARA

10-Jan-04 17:43

Hi, what the best compiler for C and C++?

(for compile the projects in this site....)

Re: what compiler?

Mazdak10-Jan-04 19:13

Mazdak

10-Jan-04 19:13

See the title above this page: C#

You should post in VC++ forum.

Mazy

No sig. available now.

Re: what compiler?

OCARA11-Jan-04 9:45

OCARA

11-Jan-04 9:45

OK, and, what the best for C#?

Re: what compiler?

Mazdak11-Jan-04 10:05

Mazdak

11-Jan-04 10:05

You missed the point. C# is not like C or c++ which could have different compiler. C# and all other supported .NET language like VB.NET have the same compiler. Its nothing to deal with C or C++.You should ask in VC++ forum the best C or C++ compiler.

Mazy

No sig. available now.

Re: what compiler?

Heath Stewart11-Jan-04 11:50

Heath Stewart

11-Jan-04 11:50

Mazdak wrote:
C# and all other supported .NET language like VB.NET have the same compiler.

You may have mistyped this, but to clarify to the original posters or future readers, each language has its own compiler (not to say someone couldn't develop a compiler that compiles multiple languages). The main point to understand is that each compiler produces Intermediate Language, or IL. While each language compiler may support different things (like VB.NET as of 1.1 can't make use of unsigned integer types or use unsafe pointers while C# can), the output is still essentially the same which means that it doesn't matter in what language a .NET assembly / library is written, each language targeting the CLR (a.k.a. ".NET language") can use the assemblies. This is language interoperability thanks to the .NET Framework's Common Type System, or CTS.

Re: what compiler?

Mazdak11-Jan-04 19:58

Mazdak

11-Jan-04 19:58

Yes Heath, Thanks for correction. I kinda sucks this time. Smile | :)

Mazy

No sig. available now.

Images not showing in toolbar

Anders Molin10-Jan-04 16:27

Anders Molin

10-Jan-04 16:27

I have a form with a couple of toolbars and some other stuff.
I added an imagelist, and added some bitmaps and some icons to the imagelist, and told the toolbarbuttons to show some images...

In the form designer the bitmaps shows fine in the toolbarbuttons, but when I run my app, no bitmaps in the buttons Confused | :confused:

Any ideas?

- Anders

Money talks, but all mine ever says is "Goodbye!"

My Photos[^]

nsms@spyf.dk <- Spam Collecting Wink | ;)

Re: Images not showing in toolbar

Anders Molin10-Jan-04 16:36

Anders Molin

10-Jan-04 16:36

I just found out that if I remove
Application.EnableVisualStyles();
from my constructor, the bitmaps show up just fine, now whats up with that? Dead | X|

Not bitmaps in the toolbarbuttons when using XP style, hmmmmm

- Anders

Money talks, but all mine ever says is "Goodbye!"

My Photos[^]

nsms@spyf.dk <- Spam Collecting Wink | ;)

Solved

Anders Molin10-Jan-04 16:49

Anders Molin

10-Jan-04 16:49

Never mind, I just found it
http://www.codeproject.com/buglist/EnableVisualStylesBug.asp[^]

Google is your friend Wink | ;)

- Anders

Money talks, but all mine ever says is "Goodbye!"

My Photos[^]

nsms@spyf.dk <- Spam Collecting Wink | ;)

Re: Solved

leppie10-Jan-04 23:35

leppie

10-Jan-04 23:35

EnableVisualStyles causes way more problems that not even apparent!

leppie ::AllocCPArticle("Zee blog");
Seen on my Campus BBS: Linux is free...coz no-one wants to pay for it.

Filtering Datasets

MrJJKoolJ10-Jan-04 13:18

MrJJKoolJ

10-Jan-04 13:18

Hi,

I am trying to use the select method in Dataset that filters using a string.

sFindEmp = "LastName = 'Jones'";
dsEmployWC.Tables[0].Select(sFindEmp);

This runs without error but when I assign this

tbEmpNum.Text = dsEmployWC.Tables[0].Rows[0]["Employee#"].ToString();

its not the correct record. What am I doing wrong?

Thanks,

JJBean

Re: Filtering Datasets

Colin Angus Mackay10-Jan-04 16:30

Colin Angus Mackay

10-Jan-04 16:30

What does the documentation for DataTable.Select say?

Here is the answer from MSDN: DataTable.Select Method[^]

--Colin Mackay--

EuroCPian Spring 2004 Get Together[^]

Re: Filtering Datasets

Mazdak10-Jan-04 19:10

Mazdak

10-Jan-04 19:10

MrJJKoolJ wrote:
I am trying to use the select method in Dataset that filters using a string.

For filtering use : ds.Tables[0].DefaultView.RowFilter = "LastName = 'Jones'";

Mazy

No sig. available now.

Advice?

Alex Korchemniy10-Jan-04 11:07

Alex Korchemniy

10-Jan-04 11:07

I have an office app that need to send information to a central server through the net (Ie. update the central server's SQL database). My first thought was to do remoting. To secure it I used a secure channel. However I still have a problem: the remote object is exposed on the internet. What is the best way of authenticating the clients.

I've been looking for things and the only thing that I came up with is hosting the object in IIS and using server certificates. However I haven't been able to get client-activated remote objects properly hosted in IIS. If this is a good direction to head please help me out with a pointer to hosting client-activated objects in IIS.

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