A Not-So-Neat Balancing Act - C# Discussion Boards

Beringer11-Mar-06 18:42

11-Mar-06 18:42

Hello, I am looking for a way to get something similar to the tables that are seen in Word. I can draw a table onto a RichTextBox control using the appropriate RTF syntax, but what I would ultimately like is the ability to resize columns and rows using the mouse.

Does anybody know how this is done? Is there a third party control that allows this to happen?
I suppose you could trap mouse movement and such, but this seems really hard, because how would you even know where the table is within the textbox?

Thanks in advance,
Eric

Coding Pattern Question

Richard Andrew x6411-Mar-06 17:25

Richard Andrew x64

11-Mar-06 17:25

Hello,

When coding a dialog box in C#, naturally there is going to be code that loads the dialog box with its initial values, responds to user input, and then retrieves the new values for use in the application.

Is it more appropriate to put this code into the Form class of the dialog box itself, or to have a separate class whose job it is to control the dialog box, and interface with it?

Thanks,
Rich

Re: Coding Pattern Question

Marc Clifton12-Mar-06 3:04

Marc Clifton

12-Mar-06 3:04

Troposphere wrote:
Is it more appropriate to put this code into the Form class of the dialog box itself, or to have a separate class whose job it is to control the dialog box, and interface with it?

IMO, neither. Use data binding to connect an autonomous class that contains the properties for the data with the dialog. The data binding ensures that neither the dialog nor the underlying container class needs to know about each other, which makes your application more flexible and extensible. Here's[^] an article I wrote on the subject.

Marc

Pensieve
Functional Entanglement vs. Code Entanglement
Static Classes Make For Rigid Architectures

Re: Coding Pattern Question

Richard Andrew x6412-Mar-06 5:34

Richard Andrew x64

12-Mar-06 5:34

Thanks Marc! Your article is right on the money. And I really think your website is slick!

Rich

Changing background colour of tabcontrol

2hdass11-Mar-06 17:06

2hdass

11-Mar-06 17:06

How do i change the background colour of a tabcontrol? I looked at msdn and i found .BackColor property but it doesnt seem like its working... D'Oh! | :doh:

Drawing String on tabpage

2hdass11-Mar-06 15:48

2hdass

11-Mar-06 15:48

In order to draw my own font on the tab page i have overridden TabControl.DrawItem using the following:

private void DrawOnTab(object sender, DrawItemEventArgs e)
{
Graphics g = e.Graphics;
RectangleF tabTextArea;
TabControl tc = (TabControl)sender;
SolidBrush brush = new SolidBrush(Color.Black);
Font fnt = new Font("Microsoft Sans Serif",14F,
System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
foreach (TabPage tp in tc.TabPages)
{
tabTextArea = (tc).GetTabRect(tc.TabPages.IndexOf(tp));
//find out how to draw the string center
g.DrawString(tp.Text.Replace('_', ' '), fnt, brush, tabTextArea);
}
}

Right now it draws the text aligned to the left, how do i draw the font center? do i have to calculate the length of the string manually? How do i do that? Confused | :confused:

Re: Drawing String on tabpage

Ravi Bhavnani11-Mar-06 16:12

Ravi Bhavnani

11-Mar-06 16:12

Use the version of Graphics.DrawString() that allows you to specify formatting options. See this[^] link.

/ravi

My new year's resolution: 2048 x 1536
Home | Music | Articles | Freeware | Trips
ravib(at)ravib(dot)com

A Not-So-Neat Balancing Act

IceWater4211-Mar-06 15:21

IceWater42

11-Mar-06 15:21

I am using the cards.dll in my application as suggested at this website:

http://www.publicjoe.f9.co.uk/csharp/card06.html

The card shows up just fine on the form but i get this weird message immediately after drawing:

-----------
A call to PInvoke function 'CardMgr!cards.cardsdll::cdtDraw' has unbalanced the stack. This is likely because the managed PInvoke signature does not match the unmanaged target signature. Check that the calling convention and parameters of the PInvoke signature match the target unmanaged signature.
------------
I have no clue what information to include in this to even begin to addrss the problem.

Any ideas how to address this?

Thanks!

Re: A Not-So-Neat Balancing Act

Ravi Bhavnani11-Mar-06 16:05

Ravi Bhavnani

11-Mar-06 16:05

See this[^] link.

/ravi

My new year's resolution: 2048 x 1536
Home | Music | Articles | Freeware | Trips
ravib(at)ravib(dot)com

Re: A Not-So-Neat Balancing Act

IceWater4211-Mar-06 16:20

IceWater42

11-Mar-06 16:20

Thank you so VERY VERY VERY much, Ravi.

That resolved the problem ... the DLL returned an integer ... the interface expected a bool.

I will so inform the author of the website ... thanks again.

Tabpage : Scoll without scroll bar

2hdass11-Mar-06 15:04

2hdass

11-Mar-06 15:04

I want my tabpage to be scrolled by using my own button, so I have the following:

if (tabControl1.SelectedTab.VerticalScroll.Value - 200 > tabControl1.SelectedTab.VerticalScroll.Minimum)<br />
{<br />
    tabControl1.SelectedTab.AutoScrollPosition = new System.Drawing.Point(0, tabControl1.SelectedTab.VerticalScroll.Value - 200);<br />
}else<br />
{<br />
    tabControl1.SelectedTab.AutoScrollPosition = new System.Drawing.Point(0, tabControl1.SelectedTab.VerticalScroll.Minimum);<br />
}

this is the event handler method to clicking the button for scrolling down
When i click the down button, it only moves down once, the second time i click it it doesnt work any more... D'Oh! | :doh:

this happens when i have the AutoScroll disabled, but when i have autoscroll enabled, its fine

why!? Confused | :confused:

Can someone help me? is there anyway to enable the autoscoll, but hide the scroll bar?! maybe override the onPaint method for tabControl?

Icons

Sean8911-Mar-06 13:19

Sean89

11-Mar-06 13:19

I have a database in which users can upload files for storage and whatnot. In my windows forms app to download/upload I am displaying the files that the user has uploaded. In the ListView I would like to display the appropriate icon for each file.

ex: If they have Microsoft Word installed, it should display a Microsoft Word icon. If not just a plain file icon should be displayed.

How would I do this?

Any help is appreciated.

Re: Icons

Ravi Bhavnani11-Mar-06 13:42

Ravi Bhavnani

11-Mar-06 13:42

Perhaps you could call SHGetFileInfo to obtain the file's icon index in the system image list (as well as its display name, eg: "Microsoft Word document"). You can pass a fictitious filename (with a matching extension) to SHGetFileInfo.

See this[^] link for how to call ShGetFileInfo from your WinForms app.

/ravi

My new year's resolution: 2048 x 1536
Home | Music | Articles | Freeware | Trips
ravib(at)ravib(dot)com

Re: Icons

Sean8911-Mar-06 15:03

Sean89

11-Mar-06 15:03

Looks like that is what I need. Thanks!

mobile agent

karthik.N.Rao11-Mar-06 8:05

karthik.N.Rao

11-Mar-06 8:05

Hello ,

Read a article on mobile agent on code project,its wonderfull.

Also i read an article on mobile agent on MSDN
link to the article :
http://msdn.microsoft.com/msdnmag/issues/06/02/MobileAgents/default.aspx

It also conist of sample code implementation of mobile agent,its in C#.NET

i tested the program on the LAN,but got errors like
1>No connection could be made because the target machine actively refused it
or
2>A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond

also tried between 2 PC's but got the same error.

Also i am new to .NET

can anyone help

thanking anyone in advance

karthik

C# Static Inheritance Question

tgiphil11-Mar-06 7:29

tgiphil

11-Mar-06 7:29

Hi! I have a newbie question: How do I get this code to compile and output "derivedclass"? The classes may only have static methods.

class BaseClass
{
static string _name = "baseclass";

static string GetName()
{
return _name;
}
}

class DerivedClass : BaseClass
{
static string _name = "derivedclass";
}

Console.WriteLine(DerivedClass.GetName());

I'm stumped so any help would be appreciated.

- Phil

Re: C# Static Inheritance Question

Daniel Grunwald11-Mar-06 8:21

Daniel Grunwald

11-Mar-06 8:21

Use:
static new string GetName() {...}

Re: C# Static Inheritance Question

tgiphil12-Mar-06 5:05

tgiphil

12-Mar-06 5:05

Unfortunately, that doesn't work.

transferring global variable values from one form to another

freak200411-Mar-06 5:46

freak2004

11-Mar-06 5:46

I'm a beginner programmer and,
I've been having problems with passing the values of global variables from one form to an other.
can some one help me.

I searched the webpage but couldn't find an easy way to do it.

thanks in forward

programming should sometimes be more logical.

Re: transferring global variable values from one form to another

sa_keles11-Mar-06 7:35

sa_keles

11-Mar-06 7:35

first create second form on your first form after then you can call public variables of your form1 using Form1.yourPublicVar . i mean on buttonclick event write code like this
mySecondForm Form2 = new mySecondForm();
Form2.yourPublicVar = what you want;

openup your heart and let the sun shine in

Re: transferring global variable values from one form to another

freak200412-Mar-06 21:42

freak2004

12-Mar-06 21:42

I don't seem to be able to extract the public variable...
I did everything you said, can you make a sample project and sned it to me??
If so please reply....
thanks in forward

sorry I'm just a noobie

Re: transferring global variable values from one form to another

sa_keles12-Mar-06 22:11

sa_keles

12-Mar-06 22:11

i am busy now but if you wait i will make a sample project for you (about 10 hours later)

openup your heart and let the sun shine in Smile | :)

Re: transferring global variable values from one form to another

freak200413-Mar-06 3:28

freak2004

13-Mar-06 3:28

THNX, let me know if you have it Wink | ;)

Re: transferring global variable values from one form to another

sa_keles13-Mar-06 7:29

sa_keles

13-Mar-06 7:29

i sent you a win project about transferring variables between forms i hope it helps you
bys Smile | :)

openup your heart and let the sun shine in Smile | :)

DLL Problems

cjengler11-Mar-06 3:01

cjengler

11-Mar-06 3:01

I am trying to develop a C# library that will be used by other class libraries in our orginization. I am have great difficulties in getting our other class libraries to be able to call methods of this library. We can create an instance of the public classes in my library but are unable to call any of the public methods or properties (even static ones) of that instance. Can anyone make a suggestion as to what I am missing here?

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