richtextbox problem - C# Discussion Boards

Re: Obsolete ICodeCompiler interface

Nick Parker28-Nov-04 5:44

Nick Parker

28-Nov-04 5:44

Just use the CodeDomProvider class directly as it suggests.

- Nick Parker
My Blog | My Articles

Hiding a form and displaying only a tray icon

CoffeeZombie27-Nov-04 23:42

CoffeeZombie

27-Nov-04 23:42

I want my application to run most of the time as just an notify icon visible in the system tray, with some dialogs that pop up if the user selects an option from the context menu on the tray icon. I've had a look at the example on code project that creates an application that runs in the system tray:

http://www.codeproject.com/csharp/desktop_mail_checker.asp

So I copied how the above article sets up the main form: the form's FormBorderStyle to none, set it to minizied, disable the titlebar controls (maximize, minimize, close etc). It was all fine until I noticed that the form was visible in the Alt-Tab menu and once you had alt-tabbed to it there was no way of hiding it again Frown | :(

After a bit of googling I discover if I set the Form's FormBorderStyle to FixedToolWindow then it was no longer visible in the Alt-Tab menu, result! But today I have noticed that now I can no longer minimize or hide the form it appears as a minizied tool window in the bottom left of my desktop when the application is running and even worse if the user double clicks on the title bar the window expands to its normal size, apart from the form is empty and there's no way to minimize it again!

Anyone got any ideas as to how to completely hide form so its not visible as a window on the taskbar or on the alt-tab menu? All I want is my application's icon in the system tray while its running and a context menu for the icon. I don't really need the main form at all!

Cheers,

CoffeeZombie

Re: Hiding a form and displaying only a tray icon

Skynyrd28-Nov-04 2:41

Skynyrd

28-Nov-04 2:41

use the form's Visible property. U dont need to change BorderStyles or anything.

A sample code could be (in this example I want the app to minimize to taskbar):

private void Form1_LocationChanged(object sender, EventArgs e)
{
if (this.WindowState==FormWindowState.Minimized)
{ notifyIcon1.Visible=true;
this.Visible=false;
}
}

A better solution when ur main form does not serve any purpose as in your case, is to not use any main form at all and create your own ApplicationContext. An example would be:

public class AppStart:System.Windows.Forms.ApplicationContext
{
[STAThread]
static void Main()
{
Application.Run(new AppStart());
}

NotifyIcon myIcon;

public AppStart()
{
myIcon=new NotifyIcon();
myIcon.Icon=SystemIcons.Information;
myIcon.Visible=true;
myIcon.DoubleClick+=new EventHandler(myIcon_DoubleClick);
}

private void myIcon_DoubleClick(object sender, EventArgs e)
{
Form1 myForm=new Form1();
myForm.Closed+=new EventHandler(appForm_Closed);
myForm.Show();
myIcon.Visible=false;
}

private void appForm_Closed(object sender, EventArgs e)
{
((Form)sender).Closed-=new EventHandler(appForm_Closed);
myIcon.Visible=true;
}
}

Re: Hiding a form and displaying only a tray icon

CoffeeZombie29-Nov-04 23:13

CoffeeZombie

29-Nov-04 23:13

Aha! I knew there would be some way of getting rid of the main form completly! I just could not work out what the name of said object/class would be and now I know, an applicationcontext!

Cheers!!

activate form ?

kendao27-Nov-04 21:36

kendao

27-Nov-04 21:36

i'm writing a messenger program but i don't know how to active the form like yahoo when have a new message arrives. is there any way to slove this problem

get application task

kendao27-Nov-04 21:18

kendao

27-Nov-04 21:18

is there any method to get items in "applications tab" in "windows task manager"

Re: get application task

Luis Alonso Ramos28-Nov-04 7:34

Luis Alonso Ramos

28-Nov-04 7:34

I don't know if the BCL provides a method to do so, but the EnumWindows API funcion provides that functionality. The idea is only to enumerate the visible top level windows.

You can call this routine in C# through P/Invoke.

-- LuisR

Luis Alonso Ramos
Intelectix - Chihuahua, Mexico

Not much here: My CP Blog!

richtextbox problem

kendao27-Nov-04 21:12

kendao

27-Nov-04 21:12

is there any method to insert gif image (not bitmap) into richtextbox ?

Re: richtextbox problem

Jay Shankar28-Nov-04 13:56

Jay Shankar

28-Nov-04 13:56

Yes, u can do so. please refer the below article on CP.

Insert Plain Text and Images into RichTextBox at Runtime
[^]

ExRichTextBox class's InsertImage public method will solve yr. purpose.

collection properties in user controls

Anonymous27-Nov-04 19:31

Anonymous

27-Nov-04 19:31

i created a user control that has a collection as a property when i add the control to a form i can see the collection in the control properties and i can bring up the collection editor however everything is disabled how to i enabled so i can add new strings via the collection editor in the properties window.

thanks

View&Write

kenes27-Nov-04 13:50

kenes

27-Nov-04 13:50

I need an example about how can I view an jpg image file and write it into a file in C#.net.
Especially if I want to download jpg from an internet url by http.
Or how can I create a bitmap or image object directly from the url adress, I tried stream objects but couldn't manage it. If it is not possible, how can I save an image file from a http url? then I can use it to create bitmap object. Please give an example code... Confused | :confused:

Re: View&Write

Corinna John28-Nov-04 3:54

Corinna John

28-Nov-04 3:54

There's an example on how to read a stream from an URL:
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpref/html/frlrfsystemnetwebclientclasstopic.asp

After downloading the image you can use Image.FromStream() to get the image object, and then display it in a picturebox.

_________________________________
Vote '1' if you're too lazy for a discussion

Simple MAPI can't fill address field

Ray17027-Nov-04 7:47

Ray170

27-Nov-04 7:47

I am trying to send email using the simple mapi. I cannot download the example because the server seems to be unavailable, so I wonder if anyone can help.

The problem I have is how to handle the MapiRecipDesc field in the MapiMessage structure. Apart from this it all works except I can't fill the Address field. I have the following declarations

[StructLayout(LayoutKind.Sequential, CharSet=CharSet.Ansi)]
public class MapiMessage
{
public uint ulReserved=0;
public string lpszSubject="";
public string lpszNoteText="";
public string lpszMessageType="";
public string lpszDateReceived="";
public string lpszConversationID="";
public uint flFlags=0;
public MapiRecipDesc lpOriginator;
public long nRecipCount;
public MapiRecipDesc lpRecips;
public ulong nFileCount=0;
public MapiFileDesc lpFiles;
}

[StructLayout(LayoutKind.Sequential, CharSet=CharSet.Ansi)]
public class MapiRecipDesc
{
public ulong ulReserved=0;
public ulong ulRecipClass=0;
public string lpszName="";
public String lpszAddress="";
public ulong ulEIDSize=0;
public IntPtr lpEntryID = IntPtr.Zero;
}

and in the body I do

public const uint MAPI_TO=1;

MapiMessage message= new MapiMessage();
MapiRecipDesc recipDesc =new MapiRecipDesc();

recipDesc.ulRecipClass = MAPI_TO;
recipDesc.lpszName = "Fred";
recipDesc.lpszAddress = "someone@somewhere"

message.lpszSubject = "test subject";
message.lpszNoteText = "test message";
message.nRecipCount = 1;
message.lpRecips = recipDesc;

Ray

Convert.FromBase64String(base64String); - ERROR

anderslundsgard27-Nov-04 4:18

anderslundsgard

27-Nov-04 4:18

Hi I’m going to decrypt a string that my supplier is going to send to my aspx-page.

I’ve got the key to use when I decrypt using Rijndaels algorithm.

I think I should use the System.Security.Cryptography.RijndaelManaged class but have problem setting the Key property.

Here Is my code:<br />
<br />
RijndaelManaged myRijndael = new RijndaelManaged();<br />
byte[] key;<br />
char[] base64CharArray = new char[16];<br />
base64CharArray = "1234567890123456".ToCharArray(); // 16 signs<br />
<br />
string base64String = new string(base64CharArray);<br />
<br />
key = Convert.FromBase64String(base64String);//myRijndael.Key;

I got the following runtime error:

An unhandled exception of type 'System.FormatException' occurred in CryptoDev.exe
Additional information: Invalid character in a Base-64 string.

_____________________________

...and justice for all

APe

traffic system simulation project

Member 148592127-Nov-04 3:50

Member 1485921

27-Nov-04 3:50

now am going to have a traffic network map from autoCad , its now well understood as lines,circles,curves (shapes and only shapes) , i want to identify the street , intersection , square so that i may apply my calculations on it due to entered data on those elements ( street,square,intersection ) .

the problem is turning lines and curves into traffic elements .

i had an idea too , am not going to enter the network from autoCad but i will build my own drawing tool in the program so elements identification is solved in that way .

want your opinions .

thanks alot .

Amr Abbas

Re: traffic system simulation project

Colin Angus Mackay27-Nov-04 14:54

Colin Angus Mackay

27-Nov-04 14:54

I think you need to look at GIS (Geographical Information System) software rather than AutoCAD. AutoCAD is really not designed to handle geographic information (even although some people insist on using it for the purpose).

I would recommend that you look at products by ESRI, MapInfo, or if you have an especially large project, Smallworld (Now part of GENS - General Electric Network Solutions)

Do you want to know more?
WDevs.com - Member's Software Directories, Blogs, FTP, Mail and Forums

logging package

mathon27-Nov-04 3:32

mathon

27-Nov-04 3:32

Hello,

I have looked at the documentations of the NSpring Framework from Jeff Varszegi and the log4net framework. Can anyobdy explain me the differences between these two frameworks?

thx

mathon

column wise display in datagrid

imarehan27-Nov-04 3:03

imarehan

27-Nov-04 3:03

How can I load records column-wise instead of row wise in a datagrid from a database or an object.

How to write a Grid

Mehdy Khoshrou27-Nov-04 2:19

Mehdy Khoshrou

27-Nov-04 2:19

Hi
I want to know how can I write a Grid just like Microsoft winform DataGrid
with DataSource and DataMember support. I want to know how binding and painting occures.

thanks

Farshid

Re: How to write a Grid

Nick Parker27-Nov-04 4:28

Nick Parker

27-Nov-04 4:28

There are actually several articles here in CP that cover this topic specifically. I would suggest here[^].

- Nick Parker
My Blog | My Articles

Re: How to write a Grid

Alex Korchemniy27-Nov-04 10:04

Alex Korchemniy

27-Nov-04 10:04

Very possible, but very difficult.

Its a fun thing to do Smile | :)

However, for a company its not worth the effort. U can save some money (time = money) if you buy a finished grid solution.

This posting is provided "AS IS" with no warranties, and confers no rights.

Alex Korchemniy

ProgressBar

MoustafaS27-Nov-04 0:41

MoustafaS

27-Nov-04 0:41

Is there is any method to join between the progressbar value and any object running like web browser,
Or i must make it manually in the webBrowser.Navigating event
and ifso what is this method OMG | :OMG: