Re: Painting a button - C# Discussion Boards

Legolas_Bilbao23-Aug-06 8:37

23-Aug-06 8:37

I´ve a question i want to implemente a class paperA and class paperB only have 2 common attributes , i want to do using uml standards like heredity or agregation what is the best perform and why

thanks

Dios creo un equipo perfecto a los demas los lleno de extranjeros

Re: Agregation vs Heredity

Jun Du23-Aug-06 8:51

Jun Du

23-Aug-06 8:51

It's about relationship, not performance. You should get the relationship right. Inheritance describes that B is an A, but aggregation describes that B has an A. For example, a car is a vehicle, but a car has (is not) an engine.

Best,
Jun

Re: Agregation vs Heredity

Legolas_Bilbao23-Aug-06 21:12

Legolas_Bilbao

23-Aug-06 21:12

then how can i develop this class? using what

ink paper is paper and thermic paper is paper or with agregation

thanks

Dios creo un equipo perfecto a los demas los lleno de extranjeros

Re: Agregation vs Heredity

Jun Du24-Aug-06 3:26

Jun Du

24-Aug-06 3:26

It sounds like inheritance.

Best,
Jun

Re: Agregation vs Heredity

Legolas_Bilbao25-Aug-06 8:15

Legolas_Bilbao

25-Aug-06 8:15

thanks

Dios creo un equipo perfecto a los demas los lleno de extranjeros

Painting a button

kalyanPaladugu23-Aug-06 8:04

kalyanPaladugu

23-Aug-06 8:04

Iam trying to paint a button to get a shade in a button. Iam using a LinearGradientBrush. The code below Worked but it is taking away the
button1.text also.How do i get the text to show after the button is
painted.

void button1_Paint(object sender, PaintEventArgs e)
{
Graphics g = e.Graphics;
Rectangle rcView = this.ClientRectangle;

using (LinearGradientBrush brush = new LinearGradientBrush(rcView, this.ColorStart, this.ColorEnd, this.GradientMode))
{
g.FillRectangle(brush, rcView);
}
base.OnPaint(e);
}

ColorStart and ColorEnd are basically colors. Iam trying shade of the
color from lighter to darker across the button. So my ColorStart is a
little lighter color and ColorEnd is a Darker color.

Thanks
Kal

Re: Painting a button

BarV23-Aug-06 8:08

BarV

23-Aug-06 8:08

Override the OnPaint function

Re: Painting a button

Nader Elshehabi23-Aug-06 9:39

Nader Elshehabi

23-Aug-06 9:39

Reposting your question 3 hours apart in the same forum is consedered very rude!!! Don't do that again, and review my answer to your previous post

Re: Painting a button

Christian Graus23-Aug-06 12:01

Christian Graus

23-Aug-06 12:01

It's happening a lot at the moment. I assume it means 'I don't understand the answer, and am hoping for one I can copy and paste'

Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog

one instance

TAREQ F ABUZUHRI23-Aug-06 7:07

TAREQ F ABUZUHRI

23-Aug-06 7:07

i have when i click on the button i want to open new form
i know how to open new form (new Form();)

1- but how can just open just one form at the same time (one instance)
2- i want the user cant focus on the old form without close current form

Palestine

Re: one instance

Not Active23-Aug-06 7:59

Not Active

23-Aug-06 7:59

Form.ShowDialog

only two letters away from being an asset

Re: one instance

Guffa23-Aug-06 8:02

Guffa

23-Aug-06 8:02

1- How do you do to open more than one form at a time? Just don't do it that way.

2- Use the ShowDialog method to show the form.

---
b { font-weight: normal; }

WYSIWYG Html control for Windows Form

Nadia Monalisa23-Aug-06 6:56

Nadia Monalisa

23-Aug-06 6:56

Hi,
I am searching for a good WYSIWYG Html control for last 6 months in Google, I did not get a good one. Do anyone know a good Win form .NEt 2.0 Control for Html Editing.

Thanks

Re: WYSIWYG Html control for Windows Form

Chris Maunder23-Aug-06 17:06

Chris Maunder

23-Aug-06 17:06

There are *tons*. You can even host the IE control and use its inbuilt editor if you want.

Maybe if you told us what you don't like about the currently available ones we could narrow it down.

cheers,
Chris Maunder

CodeProject.com : C++ MVP

FIX: A MFC program created in Visual Studio .NET 2003 unexpectedly quits when you try to close it[^]

Re: WYSIWYG Html control for Windows Form

emran83423-Aug-06 18:24

emran834

23-Aug-06 18:24

Hello,
I did not find any good one even commercial. Which already has a toolbar and good API. I did not find any way to use IE control as an editor. would you please show me in little more details.

Thanks
Regards

Safe Vs. Unsafe Pixel Processing...

Shy Agam23-Aug-06 6:24

Shy Agam

23-Aug-06 6:24

I've read an article about fast pixel processing[^] posted in codeproject.
As we all know, the GetPixel() and SetPixel() functions have a lot of overhead.
So... The most common solution I've found so far was to lock the pixels in memory and perform calculations using unsafe code and pointers.

If you look at the source code provided with the article mentioned above, you'll see that AndrewVos ,the writer, does lock the pixels in memory, but instead of looping through pixels using unsafe pointers, he marshals them into an array.

I'm sure that the safe and managed code is better.
After all it IS "safe and managed". Smile | :)

But is it slower/faster than unsafe code?

Thanks in advance,
Shy.

Re: Safe Vs. Unsafe Pixel Processing...

leppie23-Aug-06 6:51

leppie

23-Aug-06 6:51

shyagam wrote:
But is it slower/faster than unsafe code?

If you are going to manipulate a large amount of pixels, the marshal overhead will be small. For justa few pixels, unsafe will still be the fastest.

xacc.ide-0.2.0.57 - now with C# 2.0 parser and seamless VS2005 solution support!

event

TAREQ F ABUZUHRI23-Aug-06 6:20

TAREQ F ABUZUHRI

23-Aug-06 6:20

i want to make event after my Form finsh loading all component .....

at any event can put it ?

Palestine

Re: event

Nader Elshehabi23-Aug-06 9:23

Nader Elshehabi

23-Aug-06 9:23

Hello

You should put your code in the Form.Shown event. Yet, notice that it needs .Net version 2.0

If you don't have version 2.0 you may try the Activated event, yet it will be fired evry time you code is activate it. So if you want to run it once, make a bool and set it to false after the first time.

Regards Rose | [Rose]

Painting a button

kalyanPaladugu23-Aug-06 6:06

kalyanPaladugu

23-Aug-06 6:06

Iam trying to paint a button to get a shade in a button. How do i do it.
Iam using this code below. Iam using a LinearGradientBrush but it doesn't
seem to do anything

void button1_Paint(object sender, PaintEventArgs e)
{
Graphics g = e.Graphics;
Rectangle rcView = this.ClientRectangle;

using (LinearGradientBrush brush = new LinearGradientBrush(rcView, this.ColorStart, this.ColorEnd, this.GradientMode))
{
g.FillRectangle(brush, rcView);
}
base.OnPaint(e);
}

ColorStart and ColorEnd are basically colors. Iam just get the shade of the
color from lighter to darker across the button. So my ColorStart is a
little lighter color and ColorEnd is a Darker color.

Thanks
Kal

Re: Painting a button

Nader Elshehabi23-Aug-06 9:35

Nader Elshehabi

23-Aug-06 9:35

Hello

Few points:

1- this.ClientRectangle => Should be => button1.ClientRectangle
2- base.OnPaint(e); => Why this??
3- How do you define: this.ColorStart, this.ColorEnd, this.GradientMode?? Which colors exactly did you use? Very close gradients may fuse together.

Now try this code:

Graphics g = e.Graphics;
            Rectangle rcView = button1.ClientRectangle;

            using (LinearGradientBrush brush = new LinearGradientBrush(rcView,Color.DarkGreen, Color.DarkMagenta, 50 ))
            {
                g.FillRectangle(brush, rcView);
            }
            //base.OnPaint(e);

Re: Painting a button

kalyanPaladugu23-Aug-06 11:02

kalyanPaladugu

23-Aug-06 11:02

Thanks for answering me.
I got it to work.
You are right its button1.ClientRectangle.
I had to again use g.DrawString to draw the name on the button because its
lost after i painted

Thanks
Kal

Project

drc_no123-Aug-06 5:36

drc_no1

23-Aug-06 5:36

Hello, everybody! I've just realised that in a few days (on the 15th September) i have to present a project as an examination for certification in Informatics (still in college, but...). The only thing i lack is an idea. I thought of building an IM client, still, i have no idea how to send the messages from one computer to another (IP adresses, maybe?), so, i'll need a new idea. I know this isn't the best place to ask this question, but, C# is rather the only programming language i know.

--> about the IM client:
i know it must contain a background process that waits for writing from the other computer, a beggining and ending signal of the message, a user interface and... the most important thing (probably because i don't know it): a way to transmit the messages without using a server (because i don't have one and have never worked with one)
<--
please, help me out! Sigh | :sigh:

Re: Project

User 171649223-Aug-06 7:58

User 1716492

23-Aug-06 7:58

Here are details of source code available from http://www.miranda-im.org/download/[^]for the Miranda IM version 0.5 Open Source Project. Unfortunately it is not written in C# but if you download the source code, I am sure that you will be able to think your way through. This open source project was found here [^] and other IM's and other open source projects are housed here.

HOWEVER, don't you think you have left this college project a little late.

modified 1-Aug-19 21:02pm.

Re: Project

Not Active23-Aug-06 8:01

Not Active

23-Aug-06 8:01

Don't encourage them Sigh | :sigh:

only two letters away from being an asset

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