Graphics to File - C# Discussion Boards

Guffa27-Jun-07 1:27

Guffa

27-Jun-07 1:27

Standard question #1:
What do you mean by "not working"?

Standard question #2:
What error message do you get?

The CreateGraphics method creates a Graphics object for drawing on the control. There is no specific CreateGraphics method that creates a Graphics object for drawing on the image in a PictureBox. You are just drawing on the screen, that does not affect the image in the PictureBox.

You have to create a Graphics object for the bitmap so that you can draw the graphics on the bitmap instead of on the screen.

---
single minded; short sighted; long gone;

pmartike27-Jun-07 23:25

pmartike

27-Jun-07 23:25

Thanks, you're right Smile | :)

i solved the problem...

http://pmartike.deviantart.com/

Christian Graus27-Jun-07 1:32

Christian Graus

27-Jun-07 1:32

pmartike wrote:
pictureBox1.CreateGraphics();

To further clarify, you should never do this

1 - it's a waste of a picture box, the picture box does nothing
2 - if your form is obscured, what you drew will be erased

Draw in your paint event, or create a Bitmap and assign it to the picture box. Draw on it first if you want to, and save it, if you want to do that.

pmartike wrote:
Bitmap bb = new Bitmap(pictureBox1.Image);

The issue here is that there is no image inside the picture box, you need to put one in there, and even if you do, CreateGraphics won't do anything to it. It's more like you are drawing on a layer above the control, a layer that is not permanent.

Christian Graus - Microsoft MVP - C++

"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )

zeeShan anSari27-Jun-07 3:56

zeeShan anSari

27-Jun-07 3:56

Hi,
your & my problem both are same ,read my today(june,27) post
"Problem about bitmap in Visual Studio C Sharp.NET ?"
i solve my half problem by following code:

Bitmap bmp = new Bitmap(pictureBox2.Width, pictureBox2.Height);<br />
Graphics g = Graphics.FromImage(bmp);<br />
Pen p = new Pen(Color.Red, 5);<br />
g.DrawEllipse(p, e.X, e.Y, 5, 7); <br />
pictureBox2.Image = bmp;

*first read my post, if you get any solution then please inform me

pmartike27-Jun-07 23:40

pmartike

27-Jun-07 23:40

i can't find your post Frown | :(

i resolved my problem too:

<br />
Bitmap bit = new Bitmap(244, 200);<br />
Graphics g = Graphics.FromImage(bit);<br />
g.DrawRectangle(WhitePen, 10,10, 100, 50);<br />
bit.Save("c:\\image.bmp");    <br />

Can you give a link with your post?

http://pmartike.deviantart.com/

When shd we make function static in C#

Hesham Yassin27-Jun-07 8:10

Hesham Yassin

27-Jun-07 8:10

serialize it

vikasviswan27-Jun-07 0:46

vikasviswan

27-Jun-07 0:46

When shd we make function static in C#..

We will be able to call function using the class Name. Wat is the advantages of that and wat are the scenarios where we would use static functions

Vikram A Punathambekar27-Jun-07 0:50

27-Jun-07 0:50

Sounds like a homework/interview question. Suspicious | :suss:

Google for the answers, and if you still don't understand something, be specific with your quesion.

Cheers,
Vıkram.

After all is said and done, much is said and little is done.

vikasviswan27-Jun-07 0:54

vikasviswan

27-Jun-07 0:54

Tell me a scenario where we are forced to make a function static

Martin#27-Jun-07 1:20

Martin#

27-Jun-07 1:20

Hello,

I think you really should do what have been suggested bevor!
Is the reason why you posted the question again (which is very rude for the one who tried to help you) that you haven't understood the answer?

I give you a help to search for at google:
"Singleton"

All the best,

Martin

Vikram A Punathambekar27-Jun-07 2:30

27-Jun-07 2:30

I have this suspicion you thanked me with that 1 vote, but I'll give you the benefit of the doubt.

To answer your question: Singletons. Factory methods. Helper classes. Lots of other scenarios where your function should/does not need to do anything with the instance variables.

Cheers,
Vıkram.

After all is said and done, much is said and little is done.

Martin#27-Jun-07 3:30

Martin#

27-Jun-07 3:30

Vikram A Punathambekar wrote:
I have this suspicion you thanked me with that 1 vote

This really sucks!!!
That's why I posted this suggestion[^]

Got my '5' to bring it back in shape!

All the best,

Martin

Vikram A Punathambekar27-Jun-07 4:23

27-Jun-07 4:23

Heh, I'm happy to share what little I know, but these little things can be annoying. C'est la vie.

I find it amazing that people like CG, Guffa, you, and a few others plow on with little to no rewards. I'd be happy if I were half as helpful as one of you.

Cheers,
Vıkram.

After all is said and done, much is said and little is done.

Colin Angus Mackay27-Jun-07 5:36

Colin Angus Mackay

27-Jun-07 5:36

Vikram A Punathambekar wrote:
I find it amazing that people like CG, Guffa, you, and a few others plow on with little to no rewards

There are rewards.

1. Occasionally people thank us.
2. It exercises the brain so it helps retain the information we have, even if we aren't working on a project that uses it at this time.
3. If you are helpful enough you get a different icon next to your name.

Upcoming events:
* Glasgow: Mock Objects, SQL Server CLR Integration, Reporting Services, db4o, Dependency Injection with Spring ...
* Reading: Developer Day 5

Ready to Give up - Your help will be much appreciated.

My website

Vikram A Punathambekar27-Jun-07 18:12

27-Jun-07 18:12

I should have included you as well in my list. Blush | :O

What I meant was that people don't get paid for answering these questions like they do for writing code for their employers.

I sometimes forget instant gratification is a myth. However, I'm still young, still learning and determined to 'plow on' like you guys.

Cheers,
Vıkram.

After all is said and done, much is said and little is done.

Christian Graus27-Jun-07 1:33

Christian Graus

27-Jun-07 1:33

Here's a thought, if a function has no state, then why would you want to have to create an object instance, to call it ?

Christian Graus - Microsoft MVP - C++

"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )