Thanks a lot!! - C# Discussion Boards

Re: possibly a question without a awnser ?

leppie7-Feb-03 12:09

leppie

7-Feb-03 12:09

Philip Fitzsimons wrote:
WordNet[^]

The best "GPL" dictionary I have found online. The DB setup was a bit tricky at first, but I read a bit of the PROLOG stuff, it was rather logical. Smile | :)

MyDUMeter: a .NET DUMeter clone

Structure array is the member another structure?

JuhaKa7-Feb-03 0:03

JuhaKa

7-Feb-03 0:03

Hi!

I have four 'basic' structures, and I have one 'collection' structure, which contains my 'basic' structures. This works fine until I make a structure array into my 'collection' structure. So, now I'm asking help, how should I define this structure array inside another structure?

See code:

using System;<br />
using System.Runtime.InteropServices;<br />
using Microsoft.Win32;<br />
<br />
[StructLayout(LayoutKind.Sequential)]<br />
public class MSSD<br />
{		<br />
	public byte msf;<br />
	[MarshalAs(UnmanagedType.ByValArray, SizeConst = 4)]<br />
	public byte[] mso;<br />
	[MarshalAs(UnmanagedType.ByValArray, SizeConst = 4)]<br />
	public byte[] ovn;<br />
	public byte br;<br />
}<br />
<br />
[StructLayout(LayoutKind.Sequential)]<br />
public class FHPD<br />
{<br />
	public byte spul;<br />
	public byte spm;<br />
	public byte spss;<br />
	public byte spls;<br />
}<br />
<br />
[StructLayout(LayoutKind.Sequential)]<br />
public class RHPD<br />
{<br />
	public byte spul;<br />
	public byte spm;<br />
	public byte spss;<br />
	public byte spls;<br />
	public byte sps;<br />
	public byte spd;<br />
	public byte ac;<br />
}<br />
<br />
[StructLayout(LayoutKind.Sequential)]<br />
public class HPD<br />
{<br />
	public byte csr;<br />
	public byte csl;<br />
	public byte cgr;<br />
	public byte crl;<br />
	public byte rtron;<br />
	public byte rtroff;<br />
	public byte rtlon;<br />
	public byte rtloff;<br />
	public byte moo;<br />
	public byte arf;<br />
	public byte alf;<br />
	[MarshalAs(UnmanagedType.ByValArray, SizeConst = 4)]<br />
	public uint[] qrp;<br />
	[MarshalAs(UnmanagedType.ByValArray, SizeConst = 4)]<br />
	public uint[] qlp;<br />
}<br />
<br />
[StructLayout(LayoutKind.Sequential)]<br />
public sealed class PAD<br />
{<br />
	[MarshalAs(UnmanagedType.ByValArray, SizeConst = 8)]<br />
	public byte[] sn;<br />
	[MarshalAs(UnmanagedType.ByValArray, SizeConst = 80)]<br />
	public byte[] ct;<br />
	[MarshalAs(UnmanagedType.Struct)]<br />
	public MSSD mss = new MSSD();<br />
	[MarshalAs(UnmanagedType.Struct)]<br />
	public FHPD fhpd = new FHPD();<br />
	[MarshalAs(UnmanagedType.Struct)]<br />
	public RHPD rhpd = new RHPD();<br />
	[MarshalAs(UnmanagedType.ByValArray, SizeConst = 10, ArraySubType = UnmanagedType.Struct)]//the problem<br />
	public HPD[] hpd;<br />
<br />
	public PAD()<br />
	{<br />
<br />
	}<br />
<br />
	public void sizeOfPAD()<br />
	{<br />
		int si = Marshal.SizeOf(this);<br />
		Console.WriteLine("the size of PAD is " + si +" bytes.");<br />
	}<br />
}

Please, help me!

br. Juha Ka

Re: Structure array is the member another structure?

leppie7-Feb-03 12:19

leppie

7-Feb-03 12:19

JuhaKa wrote:
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 10, ArraySubType = UnmanagedType.Struct)]//the problem

Once you solve that one, the problem will resurface with the next array. Have a look here - http://www.codeproject.com/script/comments/forums.asp?msg=409174&forumid=1650#xx409174xx[^] -. Not sure if it helped.

MyDUMeter: a .NET DUMeter clone

Exception creating a control

chito6-Feb-03 17:03

chito

6-Feb-03 17:03

Hello,

I am using one third party control.
When I am going to place that control on my form it is showing following error.
An exception occurred while trying to creating an instance of "XPMenus.Menus.MenuControl". The Exception was "the type of intializer for
"XPMenus.Menus.MenuControl" threw an exception.

chito.

Re: Exception creating a control

James T. Johnson6-Feb-03 19:42

James T. Johnson

6-Feb-03 19:42

chito wrote:
the type of intializer for
"XPMenus.Menus.MenuControl"

This basically means that there was an exception thrown in the static constructor of the XPMenus.Menus.MenuControl class. A static constructor is generally used to initialize some global/static data for the class because it is called before the first time the class is used (if I remember correctly).

James

"It is self repeating, of unknown pattern"
Data - Star Trek: The Next Generation

How can I make Command at runtime?

bania6-Feb-03 16:40

bania

6-Feb-03 16:40

public void ExeQueryCmdArray(NewDBClass.DbName dbName, String[] sQuery) 		
{
	this.dbNameCache = dbName;
	this.DbInstance(dbName);
	OleDbCommand cmdCommon1	;
	OleDbCommand cmdCommon2	;
	OleDbCommand cmdCommon3	;
	try
	{
		this.conOleDb.Open();
		this.transOleDb = this.conOleDb.BeginTransaction();
		switch (sQuery.Length)
		{
			case 2:
			cmdCommon1 = new OleDbCommand(sQuery[0],conOleDb,transOleDb);
			cmdCommon2 = new OleDbCommand(sQuery[1],conOleDb,transOleDb);
			cmdCommon1.ExecuteNonQuery();
			cmdCommon2.ExecuteNonQuery();
			break;
			case 3:
			cmdCommon1 = new OleDbCommand(sQuery[0],conOleDb,transOleDb);
			cmdCommon2 = new OleDbCommand(sQuery[1],conOleDb,transOleDb);
			cmdCommon3 = new OleDbCommand(sQuery[2],conOleDb,transOleDb);
			cmdCommon1.ExecuteNonQuery();
			cmdCommon2.ExecuteNonQuery();
			cmdCommon3.ExecuteNonQuery();
			break;
		}

		this.transOleDb.Commit();
	}
	catch(System.Data.OleDb.OleDbException oe)
	{
		ExceptionClass.PrintException(oe.Message);
		this.transOleDb.Rollback();
	}
	catch(System.Exception e)
	{
		ExceptionClass.PrintException(e.Message);
		this.transOleDb.Rollback();
	}
	finally
	{
		this.conOleDb.Close();
	}
}

I use Access Database, and I want to execute various Insert and Update Query strings.
As you know, That code is very annoying me. So, I'd like to change using [for Loop].
But, I don't know How To...

Is there anyone can help me..
Thanks!!

Re: How can I make Command at runtime?

leppie6-Feb-03 22:53

leppie

6-Feb-03 22:53

bania wrote:
switch (sQuery.Length) { case 2: cmdCommon1 = new OleDbCommand(sQuery[0],conOleDb,transOleDb); cmdCommon2 = new OleDbCommand(sQuery[1],conOleDb,transOleDb); cmdCommon1.ExecuteNonQuery(); cmdCommon2.ExecuteNonQuery(); break; case 3: cmdCommon1 = new OleDbCommand(sQuery[0],conOleDb,transOleDb); cmdCommon2 = new OleDbCommand(sQuery[1],conOleDb,transOleDb); cmdCommon3 = new OleDbCommand(sQuery[2],conOleDb,transOleDb); cmdCommon1.ExecuteNonQuery(); cmdCommon2.ExecuteNonQuery(); cmdCommon3.ExecuteNonQuery(); break; }

Replace with:

foreach (string q in sQuery)
{
  new OleDbCommand (q, conOleDb,transOleDb).ExecuteNonQuery();
}

MyDUMeter: a .NET DUMeter clone

Thanks a lot!!

bania7-Feb-03 4:32

bania

7-Feb-03 4:32

I made it!! Smile | :)

Thank you...

associate an object with datagrid's row ?

Paresh Gheewala6-Feb-03 15:11

Paresh Gheewala

6-Feb-03 15:11

Hi,
does Datagrid's Row has a tag property ? like control (Label/text) has a Tag (objecT) property which can store any object associate with it. so the same way I need to store an object with
each and every row of the datagrid ?

how do i do that? Sleepy | :zzz:

Paresh

DrawString Diagonally on Image object?

wkoch6-Feb-03 11:23

wkoch

6-Feb-03 11:23

I was reading Joel Neubeck's article on watermarking (http://www.codeproject.com/csharp/Watermark.asp) and found it very interesting and helpful.

But I was left with the question, is there a method available that enables the drawing of text diagonally on an image, or even rotated 90 degrees for a vertical effect (such as vertically drawn up the right hand side of the graphic).

Any info would be great!

Thanks.

Bill Koch

Re: DrawString Diagonally on Image object?

Paresh Gheewala6-Feb-03 11:43

Paresh Gheewala

6-Feb-03 11:43

an idea,

the best idea would be create a image in memory ,
get the graphics handle from it. write a text you want.
write to image.
now on picture box set that image and you can rotate that image.

the another option would be

1) get the graphics handle g
2) write a drawstring say letter 'a'
3) now u need the rotation algorithm to do that.

Paresh

Re: DrawString Diagonally on Image object?

James T. Johnson6-Feb-03 16:37

James T. Johnson

6-Feb-03 16:37

wkoch wrote:
But I was left with the question, is there a method available that enables the drawing of text diagonally on an image, or even rotated 90 degrees for a vertical effect (such as vertically drawn up the right hand side of the graphic).

The Transform property on the Graphics object should let you rotate, translate, or scale all drawing done using that Graphics object by assigning the proper Matrix to it.

James

"It is self repeating, of unknown pattern"
Data - Star Trek: The Next Generation

Re: DrawString Diagonally on Image object?

b99koch17-Mar-03 10:58

b99koch

17-Mar-03 10:58

Thanks for the tip. That worked out great!

I adapted it to VB, but basically I had to add the following lines:

Dim myMatrix As New Matrix()
Dim rotatePoint As New PointF(xPos, yPos)

'Rotate the matrix "Me.Angle" degrees
myMatrix.RotateAt(Me.Angle, rotatePoint, MatrixOrder.Append)

' Draw the rectangle to the screen again after applying the
' transform.
grPhoto.Transform = myMatrix

'draw the string of text onto the graphics object.
grPhoto.DrawString(mWMString, crFont, semiTransBrush2, rotatePoint, StrFormat) 'string of text
'font
'Brush
'Position

''prep the image for saving.
imgPhoto = bmPhoto

Managed DirectDraw

Tomas Petricek6-Feb-03 10:49

Tomas Petricek

6-Feb-03 10:49

Hi,
I'm trying to direct acces to MDDraw surface memory.
I'm using Lock() method but I don't understand it.

I was doing same thing in C++ and DX7..
Unmanaged Lock() returns pointer to memory and informations about format, but managed Lock() returns 2-dimensional array of byte (width and height of this array is same as size of the surface, but this is not enough for saving color in 32bit format).

Following code does nothing: Unsure | :~

Byte[,] btData=surfaceBack.Lock(LockFlags.SurfaceMemoryPointer|LockFlags.Wait);
for(int x=0; x<100; x++)
{
  for (int y=0; y<100; y++)
  {
    btData[x,y]=(byte)x;
  }
}
srfBack.Unlock(btData);

Thank you for help.

[edit] Hmmm | :|

MSDN : Surface.Lock()http://msdn.microsoft.com/library/default.asp?url=/library/en-us/directx9_m/directx/ref/ns/microsoft.directx.directdraw/c/surface/m/lock0.asp[^][/edit]

i'm only pointer to myself

Using Bitmap.Save(FileName, ImageFormat.Icon)

draco_iii6-Feb-03 9:28

draco_iii

6-Feb-03 9:28

While building an icon editor to get the feel for graphics handling I came upon a problem.

I have a panel that is has been grided out with lines, 32x32, which as you draw updates a Bitmap which is 64x64. When I go to save the icon I I convert it down to a 32x32 Bitmap and the attempt to save it.

If I take the saved file and load it into an image editor the image comes out fine. However, when I try and reload the Icon via new Icon(FileName) I get this Exception.

An unhandled exception of type 'System.ArgumentException' occurred in system.drawing.dll<br />
<br />
Additional information: The argument 'picture' must be a picture that can be used as a Icon.<br />

When looking at the file in the folder view it shows the Windows "Unassociatated Icon".

If I save the Image in Bitmap format it shows the Image next to the file, but
it still throws the Exception when reloading. Also if I build a release it throughs an error on the icon that says

Error generating Win32 resource: Error reading icon 'E:\Programming\Icons Plus\Icons Plus\bin\Debug\myIcon2.ico' -- The data is invalid. <br />

Any ideas on how to get the image saved properly so that it can be used as an Icon.

Re: Using Bitmap.Save(FileName, ImageFormat.Icon)

Paresh Gheewala6-Feb-03 10:32

Paresh Gheewala

6-Feb-03 10:32

it drawing.dll won't accept if its 8 bit image.
make it 16 bit or higher.

Paresh

Re: Using Bitmap.Save(FileName, ImageFormat.Icon)

draco_iii6-Feb-03 12:55

draco_iii

6-Feb-03 12:55

Thanks: Worked Like A Charm

Which PixelFormat. to use

draco_iii6-Feb-03 15:54

draco_iii

6-Feb-03 15:54

Which PixelFormat should be used. As long as I set it to put out a BMP the Icon "works". That is unless I set it to the application Icon.

I need to set the ImageFormat to .Icon. When I do that I get a "Unassoicated Icon" instead.

Show System Menu on a borderless form

Peter Dedene6-Feb-03 8:58

Peter Dedene

6-Feb-03 8:58

Hi!

I wanted to make my own custom user interface for my windows application, so I worked with a border-less form (FormBorderStyle = None) to hide the Title Bar, implemented my Interface with Bitmaps, Panels and Pictureboxes etc., and then re-implemented all standard windows-functions so that the user could maximize, minimize, rescale... his window like he was able to do in a normal windows applications.
But then I noticed that, when you work with a border-less form, the System Menu that normally appears when the user right-clicks on the program in the task bar, has disappeared! Is there a way in C# to do make the System Menu appear with a borderless form when a user right-clicks? I thried to search a solution in the Win32 API but didn't found one...

Thank you very much in advance!

Peter Dedene
student KULeuven - Belgium

problem with saving XML to xml file

Wizard_016-Feb-03 6:33

Wizard_01

6-Feb-03 6:33

When program enters public method MyClass.Flush 'document' has 5 childnodes.
After program opens file.xml variable document has 0 childs - what is wrong Eek! | :eek:

???

private static XmlDocument document;
....
/* load data from file*/
public void Flush() {
  XmlTextWriter writer = new XmlTextWriter("file.xml",System.Text.Encoding.UTF8);
  writer.Formatting = Formatting.Indented;
  document.WriteTo( writer );
  writer.Flush();
  writer.Close();
}

Thank you.

Re: problem with saving XML to xml file

Paresh Gheewala6-Feb-03 8:46

Paresh Gheewala

6-Feb-03 8:46

check the previous System.Text.Encoding.UTF8 encoding format.
have u checked preservewhitespace ?

Paresh

Re: problem with saving XML to xml file

Ryan Cromwell7-Feb-03 10:23

Ryan Cromwell

7-Feb-03 10:23

Cause it's static.

Serialization

Filip Strugar6-Feb-03 5:56

Filip Strugar

6-Feb-03 5:56

Hi.
I'm working on a software that needs to export data from one application to another.
Both applications are written in C# and change versions frequently, and exported data needs to be (to some degree) compatible.
Another application (written in unmanaged c++ without .net support) might require ways to easily import that data.

Since I'm relatively unexperienced C# developer I do not know how does .net serialization works, could it be easily used or should I develop custom data format?

Data is consisted of various type parts, some of them having large binary chunks. Base64 encoding is not acceptable, since additional size of ~34% is too high, so plain binary format with some type description (for purpose of versioning) is required.

So basicly my question is what data format do I get when I serialize .NET class (and what parts of object info is stored) with [Serializable] attribute, using BinaryFormatter or SoapFormatter, and how do I tweak it - and all that explained in few simple words Wink | ;)

Re: Serialization

Furty7-Feb-03 15:16

Furty

7-Feb-03 15:16

You will not be able to de-serrialize a managed code object from a non-managed application, as the target objects' structure must be absolutely identical to the serialized objects' structure.
Given your requirements, creating your own data format would be the way to go.

Re: Serialization

Victor Vogelpoel8-Feb-03 0:06

Victor Vogelpoel

8-Feb-03 0:06

Not entirely true: the serializer's binder can be overridden to enable reading other versions of the data...

VictorV

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