Re: Creating four dimensional control - C# Discussion Boards

Use of GC.SuppressFinalize in ref counted objects

molesworth15-Jul-09 4:55

15-Jul-09 4:55

Afternoon all,

I'm looking for advice or opinions on the best placement of GC.SuppressFinalize for reference counted objects.

The "standard" dispose pattern has the call in the public Dispose method :-

public void Dispose()
{
    Dispose(true);
    GC.SuppressFinalize(this);
}

However, for objects with reference counts I'm inclined to put it in the protected Dispose :-

protected void Dispose(bool _fulldispose)
{
    if (!m_Disposed)
    {
        if (RemoveRef() == 0)
        {
            if (_fulldispose)
            {
                GC.SuppressFinalize(this);

etc...

My reasoning is that if not all references are explicitly disposed, then the finaliser will still be needed to do the clean up. (Although in our system all objects with unmanaged components should be explicitly disposed, so that may be academic.)

There are lots of discussions about Dispose, IDisposable, SuppressFinalize etc. out on the net, but very few deal with the ref counted situation, so I'm open to any thoughts or advice...

There are three kinds of people in the world - those who can count and those who can't...

Creating four dimensional control

gwithey15-Jul-09 4:32

gwithey

15-Jul-09 4:32

I am trying to represent a virtual joystick on a User Interface although im having trouble trying to represent the 4 different axis of the joystick and the click on the top.

The best i have come up with is a custom control to represent:
x and y axis (using drag a cross in a circle technique)
up and down (using a trackbar)
button click (using a button)

In real life all of these can be used at the same time however cannot with my combination of controls. Does anyone have any ideas how to represent the 4 axis and click functionality

Thanx George

Re: Creating four dimensional control

OriginalGriff15-Jul-09 4:49

OriginalGriff

15-Jul-09 4:49

The best I can suggest is to capture the mouse so you don't need to drag, replace the trackbar with the mousewheel, and use the keyboard for the button. Going to be a bit of a bitch for the user what ever you do - I would prefer using a real joystick?

No trees were harmed in the sending of this message; however, a significant number of electrons were slightly inconvenienced.

This message is made of fully recyclable Zeros and Ones

Re: Creating four dimensional control

gwithey15-Jul-09 4:54

gwithey

15-Jul-09 4:54

That sounds like the best solution.
Thanx for the help.

It would be annoying for the user but i am an apprentice and this is a training project to try and create a virtual MCU so need to give it a go.

The project will eventually use a real one but for now it needs to be a virtual representation.

Re: Creating four dimensional control

molesworth15-Jul-09 5:12

molesworth

15-Jul-09 5:12

OriginalGriff wrote:
and use the keyboard for the button

Or use the mouse button?

There are three kinds of people in the world - those who can count and those who can't...

Re: Creating four dimensional control

OriginalGriff15-Jul-09 5:26

OriginalGriff

15-Jul-09 5:26

Try it on yours - move it, twiddle with the scroll wheel, and press the button - it's like pat your head / rub your stomach! Keyboard means you can divide the work between two hands, and makes it simpler...

No trees were harmed in the sending of this message; however, a significant number of electrons were slightly inconvenienced.

This message is made of fully recyclable Zeros and Ones

Re: Creating four dimensional control

molesworth15-Jul-09 6:13

molesworth

15-Jul-09 6:13

OriginalGriff wrote:
Keyboard means you can divide the work between two hands, and makes it simpler...

Spoken like a true PC gamer... Poke tongue | ;-P

Of course the easy answer is to just plug in an XBox joypad - that's what I do Big Grin | :-D

There are three kinds of people in the world - those who can count and those who can't...

Re: Creating four dimensional control

OriginalGriff15-Jul-09 8:13

OriginalGriff

15-Jul-09 8:13

molesworth wrote:
Spoken like a true PC gamer

I did indeed spend a considerable amount of time with a subtle little game back in the nineties. "Doom" I think it was called... Ate most of my life for about three years. Or was it four? Lost track of time a bit back then due to lack of sleep.

molesworth wrote:
the easy answer is to just plug in an XBox joypad

My 360 is wireless, so that wouldn't help if I was doing the project. But Saitek joysticks aren't too expensive anyway and they can take some abuse. Big Grin | :-D

[edit]changed: "Saitek joysticks are too expensive..." oops![/edit]

No trees were harmed in the sending of this message; however, a significant number of electrons were slightly inconvenienced.

This message is made of fully recyclable Zeros and Ones

How to get the control property 'Handle' and 'Name'

Durchleuchter15-Jul-09 4:12

Durchleuchter

15-Jul-09 4:12

How to get the control property 'Handle' and 'Name' from another .NET application window?

Re: How to get the control property 'Handle' and 'Name'

Dave Kreskowiak15-Jul-09 5:22

Dave Kreskowiak

15-Jul-09 5:22

Why do you need this?? As it stands, your questions just screams "bad design". Controlling another applciation through window messages is not the best way to go about it.

A guide to posting questions on CodeProject[^]

Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007, 2008

Convert HTML to RTF

Sebastian T Xavier15-Jul-09 3:40

Sebastian T Xavier

15-Jul-09 3:40

Hello,

I am in searchof a method that converts my HTML input into RTF. I don't want to have any 3rd party tools to do it.
Can anyone help me to achieve this?

Thanks in advance.

Sebastian

Re: Convert HTML to RTF

Christian Graus15-Jul-09 3:42

Christian Graus

15-Jul-09 3:42

Sebastian T Xavier wrote:
don't want to have any 3rd party tools to do it.

OK, then you need to set aside a good amount of time to write the code to do it yourself. When you're done, you could probably sell it as a third party component.

Christian Graus

Driven to the arms of OSX by Vista.

Read my blog to find out how I've worked around bugs in Microsoft tools and frameworks.

Re: Convert HTML to RTF

Alan Balkany15-Jul-09 3:51

Alan Balkany

15-Jul-09 3:51

Here's one way:

1. Display the HTML to be converted in a browser.
2. Press Ctrl-PrtScn to get a screen shot.
3. Start WordPad.
4. Press Ctrl-V to paste the screen shot.
5. Select File | Save As in WordPad.
6. Save as a .rtf file.

And you have the HTML converted to rtf without any 3rd party tools.

Re: Convert HTML to RTF

Nagy Vilmos15-Jul-09 3:54

Nagy Vilmos

15-Jul-09 3:54

Alan take a bow! You deserve MVP for that one answer!

Panic, Chaos, Destruction.
My work here is done.

Re: Convert HTML to RTF

Sebastian T Xavier15-Jul-09 4:02

Sebastian T Xavier

15-Jul-09 4:02

I never thought it as a hard task as that...... Cry | :((

I don't have months to spare for this....

Re: Convert HTML to RTF

Nagy Vilmos15-Jul-09 4:11

Nagy Vilmos

15-Jul-09 4:11

Any conversion between two formats can be problematic. In most cases the 'owners'of the formats generally provide the API's to convert. IF you are using MS Orifice, you can open HTML files and then save them to rtf; this can be done programatically.

Panic, Chaos, Destruction.
My work here is done.

Re: Convert HTML to RTF

Sebastian T Xavier15-Jul-09 4:23

Sebastian T Xavier

15-Jul-09 4:23

Thats a great input for me.... I will go ahead with this....

Thanks a lot

Sebastian

Re: Convert HTML to RTF

Luc Pattyn15-Jul-09 4:11

Luc Pattyn

15-Jul-09 4:11

If you don't mind a few shortcomings, why don't you just try using Word: let it open the HTML document and save as RTF.

Warning: make sure not to have it save any HTML, Word's idea of HTML is a bit fundamentalist.

Smile | :)

Luc Pattyn [Forum Guidelines] [My Articles]

The quality and detail of your question reflects on the effectiveness of the help you are likely to get.
Show formatted code inside PRE tags, and give clear symptoms when describing a problem.

Re: Convert HTML to RTF

Dave Kreskowiak15-Jul-09 5:20

Dave Kreskowiak

15-Jul-09 5:20

Luc Pattyn wrote:
Word's idea of HTML is a bit fundamentalist.

Fundamentalist?? That's too "warm and fuzzy" a description for what Word considers HTML. No, I think "Jihad", "Shock and Awe", "GBU-43/B Massive Ordnance Air Blast bomb", ... those are a bit more accurate.

A guide to posting questions on CodeProject[^]

Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007, 2008

Re: Convert HTML to RTF

Luc Pattyn15-Jul-09 5:35

Luc Pattyn

15-Jul-09 5:35

I plead guilty. Blush | :O

My preference for understatement goes pale next to your highly accurate politico-military jargon.

BTW: I'm beginning to worry about your long-term MS MVP status now. I wouldn't want to see another one go down and switch to Mac misery.

Luc Pattyn [Forum Guidelines] [My Articles]

The quality and detail of your question reflects on the effectiveness of the help you are likely to get.
Show formatted code inside PRE tags, and give clear symptoms when describing a problem.

Re: Convert HTML to RTF

Dave Kreskowiak15-Jul-09 7:29

Dave Kreskowiak

15-Jul-09 7:29

I'm not an MS MVP anymore. I'm spending way too much time with my 15 month old son to keep up on MS's and CodeProject's stuff at the moment.

A guide to posting questions on CodeProject[^]

Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007, 2008

Re: Convert HTML to RTF

Luc Pattyn15-Jul-09 7:36

Luc Pattyn

15-Jul-09 7:36

Good choice.
And yeah, your sig tricked me.

Smile | :)

Luc Pattyn [Forum Guidelines] [My Articles]

The quality and detail of your question reflects on the effectiveness of the help you are likely to get.
Show formatted code inside PRE tags, and give clear symptoms when describing a problem.

Re: Convert HTML to RTF

V.15-Jul-09 4:09

15-Jul-09 4:09

try to put it in a Richtextbox and start from there.
You'll probably have to manually escape the tags and replace them by rtf codes. (Readme's via google).

V.

Stop smoking so you can: Enjoy longer the money you save.
Moviereview Archive

Starting to read a file from an origin with Binaryreader

SimpleData15-Jul-09 3:33

SimpleData

15-Jul-09 3:33

Hi I am trying to read from somewhere in the middle of the file with Binaryreader but I can't.

BinaryReader br = new BinaryReader(MyFileStream);
br.BaseStream.Position = locationtostartreading; // br.BaseStream.Seek(locationtostartreading,SeekOrigin.Begin);

byte[] context = new byte[br.BaseStream.Length - locationtostartreading];

br.Read(context, 0, (int)(br.BaseStream.Length - locationtostartreading));

return Encoding.ASCII.GetString(context);

But it starts reading from beginning whatever I do.

Thanks.

Re: Starting to read a file from an origin with Binaryreader

Luc Pattyn15-Jul-09 3:41

Luc Pattyn

15-Jul-09 3:41

Hi,

1.
I would expect your code to work fine, although I had the experience once some methods rewind their stream parameter (without such being documented). IIRC Image.FromStream() does.

2.
Why do you need a BinaryReader here? FileStream.Read() would return a byte[] anyway.

Smile | :)

Luc Pattyn [Forum Guidelines] [My Articles]

The quality and detail of your question reflects on the effectiveness of the help you are likely to get.
Show formatted code inside PRE tags, and give clear symptoms when describing a problem.

Last Visit: 31-Dec-99 18:00 Last Update: 23-Apr-24 15:24

Refresh

ᐊ Prev 1...4696 4697 4698 469947004701 4702 4703 4704 4705 Next ᐅ

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