C / C++ / MFC

3-Oct-03 7:21

I'm building an app just as a personal toolbox for myself (may become cp article) and I'm looking for some suggestions. This app will need a database of some sort, and I'm leaning on using an embedded database rather then using MySQL or other service.

I've looked at the XML database options, but I don't like the idea of how large those files could potentially become. Anyone know of any free alternatives? Any database libs out there that I can embed into my app?

It doesn't have to be fully SQL complient, but I would like to be able to do simple joins at the bare minimum.

My code isn't buggy. Those are all fleatures.

Adam °Wimsatt3-Oct-03 8:20

3-Oct-03 8:20

This is what I found...

http://www.hwaci.com/sw/sqlite/[^]

My code isn't buggy. Those are all fleatures.

Neville Franks4-Oct-03 12:14

Neville Franks

4-Oct-03 12:14

SQLite seems popular and well supported, so this could be a good way to go. I don't like the fact that it is written in C and some other things are strange, but this is very personal stuff.

I'm working on app that uses pugXML (here on CP) as its database, and am very, very happy with this.

Neville Franks, Author of ED for Windows. Free Trial at www.getsoft.com

Peter Weyzen3-Oct-03 9:25

Peter Weyzen

3-Oct-03 9:25

Ever think about MSDE as a database?

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~<br />
Peter Weyzen<br />
Staff Engineer<br />
<A HREF="http://www.santacruznetworks.com">Santa Cruz Networks</A>

Adam °Wimsatt3-Oct-03 9:51

3-Oct-03 9:51

Can you embed that into your application or does it run as a seperate process?

My code isn't buggy. Those are all fleatures.

Peter Weyzen3-Oct-03 9:56

Peter Weyzen

3-Oct-03 9:56

not embedded, but small, practically free, and full SQL implementation including stored procedures.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~<br />
Peter Weyzen<br />
Staff Engineer<br />
<A HREF="http://www.santacruznetworks.com">Santa Cruz Networks</A>

FFT

AdventureBoy3-Oct-03 5:56

AdventureBoy

3-Oct-03 5:56

Can anyone recommend a good FFT (Fast Fourier Transform) component that I can download? I simply want to pass it some data, and have it pop up a window displaying the FFT.

Poke tongue | ;-P

Why is the phrase "It's none of my business" always followed by "BUT..." Poke tongue | ;-P

Re: FFT

Adam °Wimsatt3-Oct-03 6:00

Why does my stretchblt always fail?

3-Oct-03 6:00

http://www.fftw.org/[^]

My code isn't buggy. Those are all fleatures.

Re: FFT

Orhun Birsoy3-Oct-03 8:34

Orhun Birsoy

3-Oct-03 8:34

Check Intel Math Kernel Library

http://www.intel.com/software/products/mkl/[^]

http://www.intel.com/software/products/mkl/features.htm[^]

Jason Henderson3-Oct-03 5:16

Jason Henderson

3-Oct-03 5:16

CClientDC clientDC(this);
CDC memDC;
CDC srcDC;
CBitmap* pOldSrcBmp = NULL;
CRect rect;
BITMAP bmp;

GetClientRect(&rect);

memDC.CreateCompatibleDC(&clientDC);
srcDC.CreateCompatibleDC(&clientDC);

pOldSrcBmp = srcDC.SelectObject(&myBitmap);

myBitmap.GetBitmap(&bmp);
BOOL bTest = memDC.StretchBlt(0, 0, rect.Width(), rect.Height(), &srcDC, 0, 0, bmp.bmWidth, bmp.bmHeight, SRCCOPY);

srcDC.SelectObject(pOldSrcBmp);

memDC.DeleteDC();
srcDC.DeleteDC();

myBitmap is a CBitmap that has successfully loaded.
This always fails unless I'm in OnDraw or OnPaint. What gives?

"It is better to remain silent and be thought a fool than to open one's mouth and remove all doubt." - Abraham Lincoln

Jason Henderson
blog | articles

Re: Why does my stretchblt always fail?

PJ Arends3-Oct-03 6:44

PJ Arends

3-Oct-03 6:44

You are not giving memDC a bitmap to draw on. By default, a memory DC will only have a 1 x 1 pixel monochrome bitmap.

Sonork 100.11743 Chicken Little

"You're obviously a superstar." - Christian Graus about me - 12 Feb '03

Within you lies the power for good - Use it!

arrays

NewHSKid3-Oct-03 5:14

NewHSKid

3-Oct-03 5:14

Hi all,

got another simple/silly question.

I am trying to make an array but i need to it to be of different lengths. For one case i need it to be 2 and another to be 8. i was trying to do this:

int size = 0;<br />
<br />
if(myBool == TRUE)<br />
   size = 2;<br />
else<br />
  size = 8;<br />
<br />
int myArray [size];<br />
....

Can someone tell me how to do this? I thought it was possible?

Jimmy

Just cause I am 15, doesn't mean I'm dumb! (I'll really be 4 on Feb. 29...the year 2004)

Re: arrays

jmkhael3-Oct-03 5:39

jmkhael

3-Oct-03 5:39

try reading the MSDN for malloc and new (free and delete also Smile | :)

)

Papa

while (TRUE)
Papa.WillLove ( Bebe ) ;

Re: arrays

Adam °Wimsatt3-Oct-03 5:44

Determine when I am connected on LAN

3-Oct-03 5:44

If you are trying to exercize the KISS principle, then just create two different arrays and use your if to determine which to use. If you want to make it dynamic, use a linked list.

My code isn't buggy. Those are all fleatures.

Re: arrays

Ian Darling3-Oct-03 5:56

Ian Darling

3-Oct-03 5:56

try:

int * myArray = new int[size];

remember to call:

delete [] myArray;

when you've finished with it.

--
Ian Darling
"The moral of the story is that with a contrived example, you can prove anything." - Joel Spolsky

Alan Martinis3-Oct-03 4:00

Alan Martinis

3-Oct-03 4:00

Please,
If someone know how can I determine within my application if network cable is unplugged ?
Thank you !

Alan

Ravi Bhavnani3-Oct-03 5:24

Ravi Bhavnani

3-Oct-03 5:24

See InternetGetConnectedState().

/ravi

Let's put "civil" back in "civilization"
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Alexander ^M.,3-Oct-03 7:42

Alexander ^M.,

3-Oct-03 7:42

i think this wont solve all problems.. if the lan isnt used for internet, i suppose this wont work!

Don't try it, just do it! Wink | ;-)

Alexander ^M.,3-Oct-03 7:41

Alexander ^M.,

3-Oct-03 7:41

check the ip interfaces.. if the network cable is unplugged, there wont be any ip interface for the adapter(on win2k and later).

Don't try it, just do it! Wink | ;-)