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I am working on a application that uses Direct3D. The problem is that I want to use a vertexshader, but I don't know how !!
Can someone tell me how?
Greetings....
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Look at MS Highlevel Shader Language. (i just know the name, something like that)
leppie::AllocCPArticle("Zee blog"); Seen on my Campus BBS: Linux is free...coz no-one wants to pay for it.
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Hi.
I have written a windows service running in LocalService account and I want to check the username of the user logged on to the computer. How can I do this? I have tried
1) Environment.UserName, "LOCAL SERVICE" was returned
2) System.Security.Principal.WindowsIdentity.GetCurrent().Name, which returned "NT AUTHORITY\LOCAL SERVICE"
It is logical that I get this result but not what I want. How can I check who is logged on to the computer?
Thanks
/EnkelIk
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try something like this
WindowsPrincipal myPrincipal;
myPrincipal = (WindowsPrincipal) System.Threading.Thread.CurrentPrincipal;
WindowsIdentity myIdentity;
myIdentity = (WindowsIdentity)myPrincipal.Identity;
MessageBox.Show(myIdentity.Name);
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I'm afraid I can't get it to work. The cast
(WindowsPrincipal) System.Threading.Thread.CurrentPrincipal generates an invalid-cast-exception, so I tried
string strUser=System.Threading.Thread.CurrentPrincipal.Identity.Name;
but the resulting string is empty. Have I missed something?
Thanks
/EnkelIk
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I'm sorry, I didnt test the code, I just assumed it would work
You need to add this before the cast
AppDomain.CurrentDomain.SetPrincipalPolicy (PrincipalPolicy.WindowsPrincipal);
Regards,
Kannan
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Thanks, that helped on the exception. Unfortunatelly the name returned is: NT AUTHORITY\LOCAL SERVICE
so back to where I started more or less...
/EnkelIk
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This isn't a simple task.
The user physically sitting at the computer always uses the window station named WinSta0 . You can use the unmanaged APIs OpenWindowStation and GetUserObjectInformation with the UOI_USER_SID flag to get the user's security identifier or SID. You can then LookupAccountSid to discover the associated username.
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Thanks.
That seems to be the way to do it. I implemented it as a separate module and my problem now is that it works fine when I run it from a normal exe, but not when I run it from the service -it's as if I can't even create an instance of the module class. Sigh.
Thanks
/EnkelIk
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What is it supposed to return if there is no user logged on?
It is a windows service. No UI. If a user is logged on then
it returns the logged on user name. The Environment class
has a UserInteractive property.
Thank You
Bo Hunter
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I'm not sure yet. If no user is logged on, it is supposed to return something (an empty string perhaps or a null reference) from which I can tell that no user is logged on. I'm working at a university and part of the idea with the service is to have it listening for calls from a program 'gathering' information on the computers and to be able to answer whether someone is logged on or not and then the calling program display the rooms where there are, say three or more, free computers on monitors placed on different locations on campus. The students will then be able to see where a free computer can be found.
/EnkelIk
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I have two ListBox's ... listBox1, listBox2 ... I want to use the list boxs to obtain values from the "row" and "column" indices from an initialized multidimensional array. listBox1 will grab the "row" value, and listBox2 will grab the column value. I will display the data in a read-only text box... can anyone help me figure this out ???
Thanx ... total newbie to programming Windows .... I can do this in DOS ...
but I have no clue how to get the listbox to "tie-in" to my ..
double[,]DataArray = {{ values here },
{ " " },
{ " " },
{ " " }};
Chris R
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Hi!
Please help me with this. I want to make a program that inherits
from two third party classes. (Let's just call it ClassA and ClassB)
I know I cannot do multiple inheritance so I need to use interface.
But I don't know how. Please help.
"To teach is to learn twice"
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i found this site with excelent tutorials on c#
this is chapter 7 , that teach abstract classes & interfaces
http://www.programmersheaven.com/2/les_csharp_7_p1
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I have already read that site. It doesn't answer my question.
Actually the problem here is that, the classes are THIRD PARTY CLASSES.
It already has existing methods that I need to use. Thanks anyway.
"To teach is to learn twice"
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If the methods in the third party classes that you are interested in are public, then you do not need to use any inheritence, multiple or single. Simply use objects of these classes.
Otherwise if the methods are protected, then subclass both the third party classes, yourself, and add public methods in the subclasses, that use the protected methods of your interest. Then use your subclasses, instead of the original third party classes. This is kind of a hack.
In either case, you can avoid inheriting from those third party classes.
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Use inheritance for one class and containment for the other:
class C : A
{
private B b;
public void SomeMethodInB()
{
b.SomeMethod();
}
public int SomeOtherMethodInB()
{
return b.SomeOtherMethod();
}
...
}
Regards,
Alvaro
Can I ask you a question?
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i wanted to create a nice midi program in c# as my first app
i had little experience with directx so i downloaded this time the whole package including managed-directx, installed it and ...
i cant find direct-music in managed directx ???
maybe im missing something but i couldnt find midi support!
if im missing something or there is another api that has midi for c# please tell me, and is it planned to add directmusic to managed directx soon ?
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AudioVideoPlayback is the what your probably looking for.
Greetings....
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hmm , this is not good , its @#@*(#
this only let me play midi files, what i wanna do , is create a midi player with a piano control im writing to let me play midi notes in real time, any suggestions ?
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I'm shocked: the line
dataAdapter.Fill(dataSet, dataTableName);
(a local MySQL connection, ODBC, 8k rows)
took more than 1 min to execute, it needs about 2 min to show the window
just I'm so unlucky ? or it is a known performance problem here?
can I do something to speed it up? (I HAVE to show all those lines)
Thanks
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I know the problem, mysql and odbc have a speed penalty in the managed code... try to use microsoft desktop database engine instead of the mysql database. This one is fully supported and costs nothing
Greetings....
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Are there classes in C# to parse the HTML pages and do some related activities .
Srikar Y
NITK Surathkal
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COM+ and remoting
Hi, I'm trying to expose COM+ component via remoting, it works just fine - it seems. But I'm confused by how COM+/Remoting works together.
Remoting - lifetime depends on whether the object is published as SAO(singleton/singlecall), CAO and lifetime services.
In COM+, lifetime of server objects (COM+ application/component) depends on object pooling and whether JIT is enabled. My understanding is that if a COM+ app is published via remoting, than activation option must be "server". I am a little confused at how/what determines an object's life time in this situation.
For instance, how can you have SAO/Singlecall and COM+ Object Pooling at the same time?
Following are nine possible scenario:
COM+ JIT enabled/Pooling disabled + CAO
COM+ JIT enabled/Pooling enabled + CAO
COM+ JIT disabled/Pooling disabled + CAO
COM+ JIT enabled/Pooling disabled + SAO/Singlecall
COM+ JIT enabled/Pooling enabled + SAO/Singlecall
COM+ JIT disabled/Pooling disabled + SAO/Singlecall
COM+ JIT enabled/Pooling disabled + SAO/Singleton
COM+ JIT enabled/Pooling enabled + SAO/Singleton
COM+ JIT disabled/Pooling disabled + SAO/Singleton
Any idea? Thanks!
norm
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