Caret implementation - C# Discussion Boards

can't receive KeyPress Event in Window Form

zecodela22-Aug-03 15:22

22-Aug-03 15:22

hi,
in my app., i have a window form with several labels and groupboxes but no button. i can receive keypress event of that form in my event handler.
however, after added a button the window form, i can't receive KeyPress Event. after deleted it or added another label, it work again!
any help?
thanks,
jim

Re: can't receive KeyPress Event in Window Form

MeisterBiber23-Aug-03 8:38

MeisterBiber

23-Aug-03 8:38

hi !

you have to set the KeyPreview-Property of the form to true.

cu
andi

Re: can't receive KeyPress Event in Window Form

Ista23-Aug-03 15:39

Ista

23-Aug-03 15:39

you also have to

public override bool ProcessKeyPreview( Message msg) {return bProcessed;}

false = did not handle
true = did handle

I'm not an expert yet, but I play one at work. Yeah and here too.

Re: can't receive KeyPress Event in Window Form

A.Wegierski24-Aug-03 20:07

A.Wegierski

24-Aug-03 20:07

protected override bool ...

Hi,
AW

Re: can't receive KeyPress Event in Window Form

Ista25-Aug-03 3:22

Ista

25-Aug-03 3:22

Well your right but i dont see the point. I like javas rule much better on modifiying overriden methods.

nick

I'm not an expert yet, but I play one at work. Yeah and here too.

Distribute code in separate files

sumeat22-Aug-03 14:01

sumeat

22-Aug-03 14:01

Hi,

Is it possible to distribute C# class code in separate files as is possible with C++ classes?

The classes in my application are getting bigger and bigger and distributing different functionalities in separate files could help in managing the code.

Thanks,

Re: Distribute code in separate files

J. Dunlap22-Aug-03 14:13

J. Dunlap

22-Aug-03 14:13

When this happens, it's best to divide the classes up into multiple classes. However, sometimes that's not possible. The current version of C# does not support this, but the next version will support it.

"Blessed are the peacemakers, for they shall be called sons of God." - Jesus

"You must be the change you wish to see in the world." - Mahatma Gandhi

Caret implementation

Lasse Johansen22-Aug-03 11:03

Lasse Johansen

22-Aug-03 11:03

I am making a control, and in that I need to implement a caret. I do have problems with that simple task.

First I just want to be able to place the caret in the end of a custom text. I do like this:

float xpos = gfx.MeasureString(string, font).Width
g.FillRectangle(System.Drawing.Brushes.Black, xpos - 3, 0, 1, this.Font.Height);

There is a problem with this. If I use 333 as the text, it goes fine, but do I use 1111111191, the caret is being placed maybe 5 - 10 pixels from the last 1. It seems to me that the size of 1 is measured larger than it actually is.

What can I do about this problem? Am I attacking this problem from the wrong angle? Is there any implementation already made?

Gooky

Re: Caret implementation

A.Wegierski24-Aug-03 20:23

A.Wegierski

24-Aug-03 20:23

Add caret sign to the end of displayed string in paint method -or- add it to the string in setting Text property and remove it in getting this property.

Hi,
AW

Re: Caret implementation

Lasse Johansen26-Aug-03 9:50

Lasse Johansen

26-Aug-03 9:50

That is not really a good solution. Having a carrot inside a word, makes it look a little strange when the carrot blinks.

I found a solution using API calls to old GDI.

Gooky

How to change Back Color of ToolBar

sumeat22-Aug-03 9:39

sumeat

22-Aug-03 9:39

How to change the back color of a tool bar control?

Thanks

Remote Object in IIS

Mazdak22-Aug-03 7:23

Mazdak

22-Aug-03 7:23

How can I host a remote object in IIS?

Mazy

No sig. available now.

Re: Remote Object in IIS

Meysam Mahfouzi22-Aug-03 18:06

Meysam Mahfouzi

22-Aug-03 18:06

You now there are actually two ways to get a remoting application up and running: via a web server or a host utility. The first approach needs using IIS and your question is about this one.

I hope you have below files:

1- SomeServer.cs and its corresponding web.config file. put these all in some folder like "MyServer"

2- SomeClient.cs and its corresponding SomeClient.exe.config file. put them again in some directory like this: "MyClient"

3- Next create a folder named "bin" under the MyServer directory.
put the compiled version of SomeServer.cs which is SomeServer.dll in this bin directory.

4- put the compiled version of SomeClient.cs named SomeClient.exe in that MyClient directory.

5- Use internet services manager to create 2 virtual directories for both above mentioned directories.

6- Run SomeClient.exe

If any thing is not clear tell me.
I hope this helps. Rose | [Rose]

Don't forget, that's

Persian Gulf

not Arabian gulf!

Re: Remote Object in IIS

Mazdak22-Aug-03 19:42

Mazdak

22-Aug-03 19:42

Meisi wrote:
5- Use internet services manager to create 2 virtual directories for both above mentioned directories.

THanks Meisi, Of course you don't need put client part under IIS, and I think the server part need some exe file to respond to client, does IIS do it?

Mazy

No sig. available now.

Re: Remote Object in IIS

Meysam Mahfouzi22-Aug-03 20:05

Meysam Mahfouzi

22-Aug-03 20:05

Mazdak wrote:
I think the server part need some exe file to respond to client

That is the second approach.

Don't forget, that's

Persian Gulf

not Arabian gulf!

Re: Remote Object in IIS

Mazdak22-Aug-03 20:19

Mazdak

22-Aug-03 20:19

hehe...and also a configuration file to set some properties like setting chanel,namespace and...

Mazy

No sig. available now.

Picture Box

Member 37886922-Aug-03 6:34

Member 378869

22-Aug-03 6:34

How to load an image from a url into a PictureBox.
Thank's

Re: Picture Box

Mazdak22-Aug-03 7:27

Mazdak

22-Aug-03 7:27

You have to save it as a Bitmap,then set the Image property of PictureBox to it.Something like this:

picturebox.Image = Bitmap.FromFile(urlpath);

Mazy

No sig. available now.

Re: Picture Box

joan_fl22-Aug-03 7:38

joan_fl

22-Aug-03 7:38

Damn.. yours is much nicer than what I posted! Sigh | :sigh:

-------------------------------
Joan
MomComputerGeek.com

Re: Picture Box

Mazdak22-Aug-03 8:11

Mazdak

22-Aug-03 8:11

Mazy

No sig. available now.

Re: Picture Box

joan_fl22-Aug-03 7:36

joan_fl

22-Aug-03 7:36

<br />
<br />
			string sURL="www.MomComputerGeek.com";<br />
			System.Web.HttpRequest objRequest = new HttpRequest("",sURL,"");			<br />
			Stream objStream = objRequest.InputStream;<br />
			PictureBox1.Image.FromStream(objStream);<br />
<br />

-------------------------------
Joan
MomComputerGeek.com

Re: Picture Box

Member 37886924-Aug-03 21:46

Member 378869

24-Aug-03 21:46

Thank you for the Code, it's right BUT I'm not using ASP.NET I'm using Windows Forms and the class System.Web.HttpRequest is not valid.
Do yuo know how in Windows Forms (Windows Application).

Re: Picture Box

joan_fl25-Aug-03 2:09

joan_fl

25-Aug-03 2:09

Josep Restoy wrote:
class System.Web.HttpRequest is not valid

I think you would just need to reference the System.Web library.

-------------------------------
Joan
MomComputerGeek.com

Re: Picture Box

Member 37886924-Aug-03 22:26

Member 378869

24-Aug-03 22:26

I find this code:

string sURL="http://localhost:8080/cercalia/img/dispositius_home.gif";
System.Net.WebClient RequestURI = new System.Net.WebClient();
System.IO.Stream objStream = RequestURI.OpenRead(sURL);
pictureBox1.Image = Bitmap.FromStream(objStream);

This Code Works OK.

Thank you for all.

Fastest manipulation of numbers(real and integer) in C# ?

Demokritos22-Aug-03 5:19

Demokritos

22-Aug-03 5:19

After a long time I'm thinking to deal with programming again.
I want to write a math application(many graphics) with incredible many calculations in a little time so I must manipulate numbers(integer and real) as fast as possible.
I remember in "TURBO C" and old processors for fastest access(about two times faster) to integer numbers they should be declared as register and no more than two names otherwise the rest would be ignored.
In nowdays what about in "C#" and huge L2 cache memory of powerfull processors?
Has this capability to do with L2 cache?
I mean can I use L2 cache exclusively for frequently used variable names?

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