Re: Controls in C# - C# Discussion Boards

Murat YILDIZ13-Dec-02 4:12

13-Dec-02 4:12

Thanks. but my problem is entry point of function. install shield does not found my function written in c#. i have to export function for external use like this

extern "C" _declspec (dllexport) <br />
int validatethis(const char * szSerial)<br />
{<br />
.....<br />
...<br />
}<br />

i dont know how it is make in c#..

Re: Install Shield Serial Validation

Shaun Wilde13-Dec-02 9:05

Shaun Wilde

13-Dec-02 9:05

ah - I see - I assumed that you were just wanting to use the same code in some C# project.

daft question but why are you writing it in C# if it works fine with installshield in the form that you have it?

Anyway what you have to look into is called 'interop', but I don't think you can as I think MS worked on the principle that C# will want to call API but not the other way - a .NET dll is not the same as a normal dll and has different structure and thus LoadLibrary etc will not cope

I think what you might have to do is wrap the C# object in managed C++ (which I think you can export)

Technically speaking the dictionary would define Visual Basic users as programmers.
But here again, a very generalized, liberal definition is being employed and it's wrong
- just plain wrong - Tom Archer 5/12/02

Re: Install Shield Serial Validation

Murat YILDIZ13-Dec-02 22:55

Murat YILDIZ

13-Dec-02 22:55

Thank you so much... I think i understand. I want to use c# because i use well c# then c++. I will try to do that.. Thanks again..

how to rightClick any file in windows - > I find my menu item

ashshab12-Dec-02 12:13

ashshab

12-Dec-02 12:13

Hi all,
I wanna do something like what is done by WinZip or WinRar programs.
when i rightClick any file i found My Menu item after copy & paste for example.
anyone know how to do such things in C#
thanks
plextoR

Re: how to rightClick any file in windows - > I find my menu item

Kannan Kalyanaraman12-Dec-02 17:38

Kannan Kalyanaraman

12-Dec-02 17:38

What you are talking about here is a Explorer Context Menu Shell Extension.
There are a series of articles written by Mike on how to do this using VC++. If you would like to do the same in C#, there is lot of work to be done. There is a technology sample that comes along with framework sdk, which would help you go about this thing.
Here are the links that could help

The following is one of the samples, but does not directly what you want, but gives you an understanding of things involved in writing one.

http://www.codeproject.com/csharp/dateparser.asp[^]http://www.codeproject.com/shell/shellextguide1.asp[^]

The sample from framework sdk
\FrameworkSDK\Samples\Technologies\Interop\Applications\ShellCmd

Hope this helps.

Cheers
Kannan

Re: how to rightClick any file in windows - > I find my menu item

grv57513-Dec-02 1:53

grv575

13-Dec-02 1:53

If you don't need the functionality of a COM shell extension then you could get away with some quick registry additions.

Add
HKEY_CLASSES_ROOT\Folder\shell\&Command To Display\command
and set (Default) to pathtoexe\program.exe
You can play with "'s and the command line arguments passed (%1) if needed.

This will display for any folder that's right-click on. You could instead add it under the HKCR\Directory tree or create your own association. It just looks for the shell & command keys.

Controls in C#

David K12-Dec-02 11:36

David K

12-Dec-02 11:36

Hi
Is there any way to create a control in C# and use it in non .Net (MFC 6) program?

thanks

Re: Controls in C#

Christian Graus12-Dec-02 18:11

Christian Graus

12-Dec-02 18:11

Um... no.

Christian

No offense, but I don't really want to encourage the creation of another VB developer. - Larry Antram 22 Oct 2002

C# will attract all comers, where VB is for IT Journalists and managers - Michael P Butler 05-12-2002

Again, you can screw up a C/C++ program just as easily as a VB program. OK, maybe not as easily, but it's certainly doable. - Jamie Nordmeyer - 15-Nov-2002

Re: Controls in C#

James T. Johnson13-Dec-02 1:06

James T. Johnson

13-Dec-02 1:06

Yes, but it isn't cut and dry and NOT supported by Microsoft (in the early beta's it was possible, but was later removed and now the only supported non-.NET host is IE).

Essentially you have to implement all the COM interfaces that a standard ActiveX control would implement. I believe there is an article here on CP which explains what you need to do, Exposing Windows Forms Controls as ActiveX controls[^].

You will probably have to do some conversions between the class names used in Beta 1 and the ones that made it into 1.0 (for example System.WinForms is now System.Windows.Forms and System.WinForms.RichControl is now System.Windows.Forms.Control or System.Windows.Forms.UserControl).

James

- out of order -

Re: Controls in C#

grv57513-Dec-02 2:19

grv575

13-Dec-02 2:19

It sounds like you would just have to implement the COM registry stuff yourself. MS probably pulled this feature to get away from having to support older systems and concentrate solely on a .NET push. After all activex is just an exe done in COM and it's rather easy to write com controls in assembly language once you see which registry entries + class interface methods are expected.

Re: Controls in C#

James T. Johnson13-Dec-02 2:29

James T. Johnson

13-Dec-02 2:29

grv575 wrote:
MS probably pulled this feature to get away from having to support older systems and concentrate solely on a .NET push.

The response I heard was it was pulled because they didn't have time to test all possible permutations of how it would be used. By only supporting IE as the host, they had much less they needed to test/debug.

At the time they said the feature would be coming back later, after it could be tested. Who knows what Everett/v1.1 brings?

James

- out of order -

ListView: Which item doubleclicked?

peterchen12-Dec-02 11:32

peterchen

12-Dec-02 11:32

How do I find out which item is activated / doubleclicked in an ListView DoubleClick / ItemActivate event?

I guess I have to cast the EventArgs to something very clever - but what, and how to find out?

TIA
Peter

If I could find a souvenir / just to prove the world was here [sighist]

Re: ListView: Which item doubleclicked?

leppie12-Dec-02 12:21

leppie

12-Dec-02 12:21

From MSDN (ItemActivate event):

The ItemActivate event occurs when the user activates one or more items in the ListView control. The user can activate an item with either a single-click or double-click, depending on the value of the Activation property, or with the keyboard. From within the event handler for the ItemActivate event, you can reference the SelectedItems or SelectedIndices properties to access the collection of items selected in the ListView to determine which items are being activated.

Not sure is this what you are looking for... Smile | :)

WebBoxes - Yet another collapsable control, but it relies on a "graphics server" for dynamic pretty rounded corners, cool arrows and unlimited font support.

Re: ListView: Which item doubleclicked?

James T. Johnson13-Dec-02 1:31

James T. Johnson

13-Dec-02 1:31

Use the GetItemAt method of the ListView passing in the current mouse position in client coordinates (you can get the position by the MousePosition static property of the Control class).

James

- out of order -

VS on Linux platform

Jassim Rahma12-Dec-02 11:11

Jassim Rahma

12-Dec-02 11:11

How can i run C#.NET applications on Linux?

Jassim Rahma

Re: VS on Linux platform

David Stone12-Dec-02 11:35

David Stone

12-Dec-02 11:35

Well...

You can run the Shared Source Common Language Infrastructure[^] on FreeBSD and MacOSX.

However, for Linux, you're going to want to look at The Mono Project[^]

I don't know whether it's just the light but I swear the database server gives me dirty looks everytime I wander past.
-Chris Maunder

Microsoft has reinvented the wheel, this time they made it round.
-Peterchen on VS.NET

is connected

karanba12-Dec-02 10:46

karanba

12-Dec-02 10:46

Hi, I need a way to find if the computer is connected to internet at the time my program runs on. Is there any?

karanba

Re: is connected

leppie12-Dec-02 10:51

leppie

12-Dec-02 10:51

- ping
- connect to a well known website (or your own) with TcpClient

WebBoxes - Yet another collapsable control, but it relies on a "graphics server" for dynamic pretty rounded corners, cool arrows and unlimited font support.

Re: is connected

Not Active12-Dec-02 11:58

Not Active

12-Dec-02 11:58

Make sure your help notes include that. When using this application you must ping or connect to a website to make sure are connected.

There is an API that escapes me that tells if the machine has an active connection. You could also create a WebRequest and try attempting to connect to a well know site then have your application respond accordingly.

Re: is connected

grv57513-Dec-02 2:02

grv575

13-Dec-02 2:02

I believe the only api availiable for online status is for dialup connections. Won't help for broadband. The best solution is just to ping an outside server.

Re: is connected

Not Active13-Dec-02 2:55

Not Active

13-Dec-02 2:55

The same way the network status systen tray icon is updated when you log off or pull your network connection.

I just can't remember the function call now. I found it once for a project but never used it.

Re: is connected

Shaun Wilde13-Dec-02 3:54

Shaun Wilde

13-Dec-02 3:54

I think the API you are thinking of is 'InternetGetConnectedState' all part of the WinInet library

Time

fredza12-Dec-02 10:04

fredza

12-Dec-02 10:04

Hello,

How to set the SystemTime ? GetSystemTime work but SetSystemTime don't work.

how to map a drive programatically ?

imran_rafique12-Dec-02 9:42

imran_rafique

12-Dec-02 9:42

how to map a drive programatically ?
can any body tell ?

r00d0034@yahoo.com

Finding a Window

WizardOfPeyton12-Dec-02 9:04

WizardOfPeyton

12-Dec-02 9:04

Does C# and or .NET provide a function similiar to the WinAPI FindWindow or FindWindowEx methods?

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