Re: Stop Form Copies - C# Discussion Boards

1-Jan-05 12:42

Save your Form in a Field permanently. If it already exists you can restore it by setting the WindowState to normal and activating it as well.

WinForm.WindowState = FormWindowState.Normal;
WinForm.Activate();

Re: Stop Form Copies

Adam Goossens1-Jan-05 19:18

Adam Goossens

1-Jan-05 19:18

Use the Singleton pattern. Create a static member variable in your form where you keep an instance of your form.

Add a static method to your form class called "GetInstance" (or whatever you like). In that method check to see if your static variable contains an instance of the form. If it doesn't, put one in there (using new).

Then return from GetInstance the form instance kept in your member variable.

This guarantees that as long as you always call "GetInstance" to get your form object (this will require discipline on your part) only one instance of a form will ever be created:

MyCustomForm myForm = MyCustomForm.GetInstance();
MyCustomForm myForm2 = MyCustomForm.GetInstance();

// myForm and myForm2 point to the same instance of MyCustomForm.

myForm.WindowState = Normal;
myForm.Activate();

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Typecode of an Array?

TyronX1-Jan-05 10:30

Re: Typecode of an Array?

1-Jan-05 10:30

What TypeCode does an int-Array have?

TyronX1-Jan-05 10:37

Re: Typecode of an Array?

1-Jan-05 10:37

Here's my Problem:
I have a hashtable in which i save a TypeCode as the key and the fitting regular expression as the value.
So for System.TypeCode.Int32 it would be @"\-?\d".
But I also want to parse Numbers seperated by values . Therefore I need a TypeCode for integer/double-arrays or something like that

Adam Goossens1-Jan-05 15:07

Adam Goossens

1-Jan-05 15:07

The typecode of an array is System.Typecode.Object.

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Re: Typecode of an Array?

leppie1-Jan-05 17:56

leppie

1-Jan-05 17:56

Type.GetElementType()

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using windows media format & encoder API?

Member 16179991-Jan-05 9:14

Member 1617999

1-Jan-05 9:14

HI,

I have looked at the api of the WM Format and Encoder 9.0. There is a good way to capture the whole monitor screen movements in the form of an avi file. I also read the example of Idael Cardoso about how do it.

But i have one extension to it. Basically i want to transfer the frames online. But here i cannot use the encoder broadcast mechanism. I have custom api for networking.

So my question being is there any way to capture the frames and send across the network thru Windows media format api or encoder api?

thanks
eligeti

Joystick control again

TyronX1-Jan-05 4:22

Re: Joystick control again

1-Jan-05 4:22

I already opened a thread for that but I still don't have a clue how to simply get the X-Coordinates from the first connected Joystick.
Someone recommended me the Code on http://www.error-bank.com/microsoft.public.dotnet.languages.csharp/219796_Thread.aspx
but this Code is incomplete and I was not able to complete it yet. It's just to hard to understand it in order to complete the code.

TyronX1-Jan-05 10:05

Visual Studio 2005 beta - an easy question

1-Jan-05 10:05

Any Kind of help would be great.

Xml Reading in .NET 2

thepersonof1-Jan-05 4:09

thepersonof

1-Jan-05 4:09

Hi I have some xml:
<code>
<build>
<usings>
<item>System.Threading</item>
<item>System.Drawing</item>
<item>System.Windows.Forms</item>
<item>System.Diagnostics</item>
<item>System.Microsoft.DirectX</item>
<item>D3D = Microsoft.DirectX.Direct3D</item>
</usings>
<references>
<item>System.dll</item>
<item>microsoft.directx.dll</item>
<item>microsoft.directx.direct3dx.dll</item>
<item>microsoft.directx.direct3dx.dll</item>
<item>system.data.dll</item>
<item>system.drawing.dll</item>
<item>system.windows.forms.dll</item>
<item>system.xml.dll</item>
</references>
</build>
</code>

How can I read that data from each of the items in the references?

This is some code I have at the moment:
<code>
XmlTextReader reader = null;

try
{
//Load the reader with the XML file.
reader = new XmlTextReader("test.xml");

//Parse the XML and display the text content of each of the elements.
while (reader.Read())
{
if (reader.IsStartElement())
{
if (reader.IsEmptyElement)
Console.WriteLine("<{0}/>", reader.Name);
else
{
Console.Write("<{0}> ", reader.Name);
reader.Read(); //Read the start tag.
if (reader.IsStartElement()) //Handle nested elements.
Console.Write("\r\n<{0}>", reader.Name);
Console.WriteLine(reader.ReadString()); //Read the text content of the element.
}
}
}
Console.ReadLine();
reader.ReadToDescendant("usings");
reader.
Console.WriteLine(reader.Name);
Console.ReadLine();
}

finally
{
if (reader != null)
reader.Close();
}
</code>

Thanks

McSam1-Jan-05 2:58

1-Jan-05 2:58

I have developed a lot of c code and use c++ as the gui. So I down loaded Visual Studio 2005 beta version to find out a bit about c#. I was surprised that there is no windows.h file. Is this beause it is a beta version or is that the way it is with .NET? Cry | :((

Robert Rohde1-Jan-05 3:23

Robert Rohde

1-Jan-05 3:23

You seem to have a wrong view on .Net and C#. C# has nothing to do with C or C++. But you can have managed C++ in the .Net world.

McSam1-Jan-05 5:46

1-Jan-05 5:46

Is there no C in C#? I was hoping to use c# at the front end and C to do all the number crunching.

What will happen to my c/c++ code when I decide to move to .NET?

Robert Rohde1-Jan-05 6:37

Robert Rohde

1-Jan-05 6:37

Have you read my post completely?
First of all there is managed C++ which is some kind of mix between C++ and the .Net world (never used it). You can also directly use C-dlls from C# (and from many of the other .Net languages too).

Dennis C. Dietrich1-Jan-05 6:46

Dennis C. Dietrich

1-Jan-05 6:46

McSam wrote:
Is there no C in C#?

No.

McSam wrote:
I was hoping to use c# at the front end and C to do all the number crunching.

You can do this (see Consuming Unmanaged DLL Functions[^]). However, you should ask yourself if this makes sense since a fully managed application is easier to maintain.

McSam wrote:
What will happen to my c/c++ code when I decide to move to .NET?

That depends. You can compile it to native DLLs an call those, you can port them to managed C++ (there are a lot of articles on MSDN about that topic like Moving to .NET and WinFX: A Roadmap for C/C++ Applications[^] or Porting an Existing Native C++ Application to Interoperate with .NET Framework Components[^]) or you can port them to C# (guess that would be more work).

Best regards
Dennis

McSam2-Jan-05 1:13

2-Jan-05 1:13

Thanks Dennis and Robert,

Will Visual Studio 2003.NET standard edition 'do' for me?

The 2005 beta edition does not have MFC in its templates window if I want to create a new project!

Thanks,

Mike

Dennis C. Dietrich2-Jan-05 13:40

Dennis C. Dietrich

2-Jan-05 13:40

McSam wrote:
Will Visual Studio 2003.NET standard edition 'do' for me?

In terms of C/C++? I don't know. I primarily use C# and sometimes VB. Maybe you should ask that question on the Managed C++ board[^] (or the Visual C++ board[^] for that matter).

McSam wrote:
The 2005 beta edition does not have MFC in its templates window if I want to create a new project!

Please, don't get me wrong, but I'm a little bit confused why you insist on creating MFC applications with VS 2005. This product is mostly about .NET and you also haven't explained why you still have to create MFC applications. Maybe you should really give .NET a try and see if it works for you.

Best regards
Dennis

McSam3-Jan-05 4:49

3-Jan-05 4:49

I am using VC++ V5.0, it is time to upgrade. .NET seems the only way to go? My projects so far do not involve the web or networks.

Regards,

Mike