C / C++ / MFC Discussion Boards

Re: drawing circles

CPallini12-Dec-08 4:10

CPallini

12-Dec-08 4:10

manzoor10 wrote:
the book explains how to do that but im unable to understand it

Try harder.
Smile | :)

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke

[My articles]

Re: drawing circles

Nishad S12-Dec-08 4:13

Nishad S

12-Dec-08 4:13

It seems like you need to get rectangular coordinates that are used draw the circle using corresponding API.

If so, you need to get the first point (left,top) when the mouse button is down and get the last point (bottom, right) when the mouse button is released. Have a look at WM_LBUTTONDOWN and WM_LBUTTONUP messages, and if needed, WM_MOUSEMOVE... You can map them to OnLButtonDown, OnLButtonUp, etc., if you are using MFC.

I believe there will be sample codes in CP itself ( I didn't search yet... Wink | ;)

)

- NS -
[ODBaseBtn]

Re: drawing circles

enhzflep12-Dec-08 14:31

enhzflep

12-Dec-08 14:31

Oh, for the love of god! This makes finger-painting look like a fine-art.....

int radius;
POINT circleCenter;
RECT boundingRect;

  boundingRect.left = circleCenter.x - radius;
  boundingRect.top  = circleCenter.y - radius;

 boundingRect.right = circleCenter.x + radius;
boundingRect.bottom = circleCenter.y + radius;

Re: drawing circles

CPallini12-Dec-08 4:09

CPallini

12-Dec-08 4:09

manzoor10 wrote:
enclosing rectangle for a circle

Actually it is a square (well, I know the square inherits from the rectangle Roll eyes | :rolleyes:

Re: drawing circles

Eytukan12-Dec-08 7:14

Eytukan

12-Dec-08 7:14

CPallini wrote:
well, I know the square inherits from the rectangle

OK,. what country just started work for the day ? The ASP.NET forum is flooded with retarded questions. -Christian Graus

Best wishes to Rexx[^]

.rc file in visual studio 2008 express edition

Sadaiyappan12-Dec-08 3:26

Sadaiyappan

12-Dec-08 3:26

Hi, I could not add a new .rc file to visual studio 2008 express edition, so I created a text .rc file and then added it using add existing item. That part worked okay. The resource folder now shows in visual studio 2008. BUT when I try to add files to the folder it tells me that the express version of the visual studio does not support resource file editing. Please help. How do I edit the resource file? Is there a way that I can create the resource script and it's files outside of the IDE? Please help! Smile | :)

Re: .rc file in visual studio 2008 express edition

Iain Clarke, Warrior Programmer12-Dec-08 3:39

Iain Clarke, Warrior Programmer

12-Dec-08 3:39

Notepad! It's what I used to when programming windows 3 software...

You get an appreciation of the resources very quickly!

Or pay money for the grown up version... How much do you value your time?

Iain.

Re: .rc file in visual studio 2008 express edition

CPallini12-Dec-08 6:51

CPallini

12-Dec-08 6:51

You may open the resource script as a text file inside the Visual Studio IDE. It is not difficult to edit it this way and you'll gain some insight.

Another option Roll eyes | :rolleyes:

Use C# Express Edition to build up, visually, your GUI.
Develop a C# program, exploiting the generated GUI (that is the C# code) to generate the corrensponding C++ resource script.
Write an article about, and post it at CodeProject.

Converting PCM to GSM06.10 with ACM

CrazyDogg12-Dec-08 3:17

CrazyDogg

12-Dec-08 3:17

Hi @ all,

i´m recording speech with the capturBuffer of DirectSound.
Now I want to encode this in PCM recorded stream to a GSM Stream.
It is possible to do it with MS ACM?

Regards
Karsten

Re: Converting PCM to GSM06.10 with ACM

Mark Salsbery12-Dec-08 5:18

Mark Salsbery

12-Dec-08 5:18

CrazyDogg wrote:
It is possible to do it with MS ACM?

Definitely!

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Re: Converting PCM to GSM06.10 with ACM

CrazyDogg12-Dec-08 5:27

CrazyDogg

12-Dec-08 5:27

That´s nice Big Grin | :-D

.
Can you tell me how?

Re: Converting PCM to GSM06.10 with ACM

Mark Salsbery12-Dec-08 5:56

Mark Salsbery

12-Dec-08 5:56

CrazyDogg wrote:
Can you tell me how?

Take samples from the DirectSound buffer and run them through ACM to
convert them to a GSM stream.

I would start here:

Audio Compression Manager[^]

These will be the most important functions you'll need:

acmStreamOpen()
acmStreamSize()
acmStreamPrepareHeader()
acmStreamConvert()
acmStreamUnprepareHeader()
acmStreamClose()

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Re: Converting PCM to GSM06.10 with ACM

Eytukan12-Dec-08 7:20

Eytukan

12-Dec-08 7:20

You've worked with these Mark? I mean at work?

OK,. what country just started work for the day ? The ASP.NET forum is flooded with retarded questions. -Christian Graus

Best wishes to Rexx[^]

Re: Converting PCM to GSM06.10 with ACM

Mark Salsbery12-Dec-08 7:25

Mark Salsbery

12-Dec-08 7:25

Definitely!

I've got a full working implementation using DirectSound for capture
and ACM for compression/decompression.

The GSM codec was the only built-in-to-Windows codec with a small enough granularity ("packet size")
for use with low latency real-time voice communication.

It works well, although I now use a different codec that's NOT implemented as an
ACM codec so the code is sitting dormant. Smile | :)

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Re: Converting PCM to GSM06.10 with ACM

Eytukan12-Dec-08 7:35

Eytukan

12-Dec-08 7:35

Heck I'm still not able to conclude the domain you are into! I think you'll load domains into your brain with few quick blinks of the eye - like Trinity learns to fly a helicopter. You should have got a rack of dvds labeld MEDICAL/NETWORKING/TELECOM/IMAGEPROCESSING. D'Oh! | :doh:

OK,. what country just started work for the day ? The ASP.NET forum is flooded with retarded questions. -Christian Graus

Best wishes to Rexx[^]

Re: Converting PCM to GSM06.10 with ACM

Mark Salsbery12-Dec-08 7:40

Mark Salsbery

12-Dec-08 7:40

VuNic wrote:
MEDICAL/NETWORKING/TELECOM/IMAGEPROCESSING.

Just add DATABASE and that's it - everything I do Smile | :)

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Re: Converting PCM to GSM06.10 with ACM

Mark Salsbery12-Dec-08 7:42

Mark Salsbery

12-Dec-08 7:42

Actually, I do very little image processing - that's all snake-oil "science" Poke tongue | ;-P

MEDICAL/NETWORKING/TELECOM/IMAGING/DATABASE

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Re: Converting PCM to GSM06.10 with ACM

Eytukan12-Dec-08 7:51

Eytukan

12-Dec-08 7:51

Okay I'm sending you 5 empty dvds...got burner? Roll eyes | :rolleyes:

OK,. what country just started work for the day ? The ASP.NET forum is flooded with retarded questions. -Christian Graus

Best wishes to Rexx[^]

Re: Converting PCM to GSM06.10 with ACM

Mark Salsbery12-Dec-08 7:58

Mark Salsbery

12-Dec-08 7:58

Heh - OK.

Oh wait, DVD burner just broke right now... Poke tongue | ;-P

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Re: Converting PCM to GSM06.10 with ACM

Eytukan12-Dec-08 8:10

Eytukan

12-Dec-08 8:10

OK,. what country just started work for the day ? The ASP.NET forum is flooded with retarded questions. -Christian Graus

Best wishes to Rexx[^]

UDP server with multiclients

sunny_vc12-Dec-08 2:20

sunny_vc

12-Dec-08 2:20

Hi All,
I am working on UDP sever module.I have developed a simple server for receiving and sending the data from a single client.
in "OnReceive()" handler only I am sending the data to the client using "SendTo()" function,

How can I extend this to multiclients.
Please give me an idea.
Plese provide me if anybody has the sample code.

Regards,
Sunil Kumar

Re: UDP server with multiclients

Eytukan12-Dec-08 7:35

Eytukan

12-Dec-08 7:35

Did I really needed multiple threads to handle UDP clients? Wait..scanning old dumps in brain.....oops, bad sectors. Search ends.
You are unlucky. let;s wait for someone to answer you.

OK,. what country just started work for the day ? The ASP.NET forum is flooded with retarded questions. -Christian Graus

Best wishes to Rexx[^]

deleting array of objects of a class

Andy Rama12-Dec-08 1:35

Andy Rama

12-Dec-08 1:35

Hi to all,

I am have written some classes in C++ as follows,

Class A
{
int b1Len; //count of B type objects in b1Collection
B *b1Collection; //stores collection of object of type B

int b2Len; //count of B type objects in b2Collection
B *b2Collection; //stores collection of object of type B
};
Class B
{
int cLen; //count of C type objects in cCollection //cLen is atleast 30
C *cCollection; //stores collection of object of type C
};
Class C
{
int d1Len; //count of D type objects in d1Collection //d1Len is atleast 140
D *d1Collection; //stores collection of object of type D

int d2Len; //count of D type objects in d2Collection
D *d2Collection; //stores collection of object of type D

int e1Len; //count of E type objects in e1Collection
E *e1Collection; //stores collection of object of type E

int e2Len; //count of E type objects in e2Collection
E *e2Collection; //stores collection of object of type E

};
Class D
{
int fLen; //count of F type objects in fCollection //fLen is atleast 2
F *fCollection; //stores collection of object of type F
};
Class F
{
int len; //count of characters in str //len is atleast 200
char *str; //stores multiple characters
};

int aLen; //count of A type objects in aCollection
A *aCollection; //stores collection of object of type A

DelAll(aCollection, aLen); //aLen is atleast 30

//it's a macro to delete array of objects of any type
#define DelAll(obj, no) if( obj != NULL ) { if( 0 < no ) { delete[] obj; obj = NULL; } }
I am using this macro in destructor of all class (above) to delete array of objects.

My problem is, it's takes atleast 0.86 secs

Is there anything wrong I am doing?

I am using VC++ 2008 as IDE.

Thanks & Regards,
Aniket A. Salunkhe

Re: deleting array of objects of a class

Sarath C12-Dec-08 2:41

Sarath C

12-Dec-08 2:41

It'd be helpful if you post a working code. The above class structure and objects wont take too much time.

Please carefully check the destructors of the classes. You can roughly calculate the time using OutputDebugString API. Just start Debug View Tool and set the time to display in Milliseconds. then execute the code after putting enough log. or use some profiling or logging mechanisms to get the critical point.

-Sarath.
"Great hopes make everything great possible" - Benjamin Franklin

My blog - Sharing My Thoughts

Re: deleting array of objects of a class

Andy Rama17-Dec-08 21:30

Andy Rama

17-Dec-08 21:30

Hi to all,

Thanks for your suggestions.

In every class I was using Add___() function to add object of other class.
I was reading a 35 MB xml & using that I was calling Add___() every time a found an object of class A, B, C, D, .. & I was getting problem at DelAll macro (it was taking more time to execute that might be due to lot of data).

Now I have replaced the Add___() function call, by it’s function body. Now it is taking normal time to execute DelAll macro

<br />
class A<br />
{<br />
	void Add_B(const B* newBs, int newBsCount)<br />
	{<br />
		if( newBsCount <= 0 )<br />
			return;<br />
<br />
		B* temp_Bs = NULL;<br />
<br />
		if( 0 < AllBsCount )<br />
			temp_Bs = new B[AllBsCount ];<br />
<br />
		int i<br />
		for( i= 0 ; i < AllBsCount; i++ )<br />
			temp_ Bs [i] = AllDays[i];<br />
<br />
		DelAll(AllBs, AllBsCount)   //problem macro<br />
<br />
		AllBs = new B[AllBsCount + newBsCount];<br />
		for( i = 0 ; i < AllBsCount; i++ )<br />
			AllBs [i] = temp_Days[i];<br />
		for( i = 0 ; i < newBsCount; i++ )<br />
			AllBs [AllBsCount +i] = newBs [i]; <br />
<br />
		DelAll(temp_ Bs, AllBsCount);<br />
<br />
		AllBsCount += newBsCount;<br />
	}<br />
}<br />

Thanks & Best Regards,
Aniket A. Salunkhe

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