C / C++ / MFC

Re: How to create a table in the database using mfc

21-Aug-06 2:32

What is your problem exactely ? What have you already done ?

~RaGE();

I think words like 'destiny' are a way of trying to find order where none exists. - Christian Graus

_AnsHUMAN_ 21-Aug-06 2:46

_AnsHUMAN_

21-Aug-06 2:46

So what is your problem.
Working with Property Pages or Filing the entries in the database

Somethings seem HARD to do, until we know how to do them.
Wink | ;-)

_AnShUmAn_

Re: How to create a table in the database using mfc

Hamid_RT21-Aug-06 3:04

Hamid_RT

21-Aug-06 3:04

tejaswini.g wrote:
I want to create a table in the database

But in where ?

WhiteSky

Re: How to create a table in the database using mfc

David Crow21-Aug-06 3:37

David Crow

21-Aug-06 3:37

You can use CDatabase::ExecuteSQL("CREATE TABLE MyTable (...)") for this. Just

"Money talks. When my money starts to talk, I get a bill to shut it up." - Frank

"Judge not by the eye but by the heart." - Native American Proverb

Re: How to create a table in the database using mfc

vc++_fragrance21-Aug-06 22:53

vc++_fragrance

21-Aug-06 22:53

In my application I have created a propertypage.In that property page I have displayed three edit boxes.
For example in that edit boxes the user will enter name,sex,age.

Taking those three values as column names I have to create a table in the database.

while creating my project I have chosen Database view with file support.
Can u plz help me.

Thanks in advance.

2d array problem in standard C

bouli21-Aug-06 2:25

21-Aug-06 2:25

Hi gurus,

I have a problem here. I have forgotten how to pass a 2D array in a function Sigh | :sigh:

. Normally an int** should do the deal, but no Frown | :(

Here is a sample code:

<br />
#include <stdio.h><br />
<br />
int				g_tab[16][4]=<br />
{<br />
	{ 0x03e0, 0x14a5, 0x0000, 0x0000, },<br />
	{ 0x7fff, 0x6739, 0x4e73, 0x18c6, },<br />
	{ 0x6460, 0x6431, 0x0821, 0x7bfe, },<br />
	{ 0x0000, 0x001f, 0x03e0, 0x7c00, },<br />
	{ 0x7fff, 0x7fff, 0x4631, 0x2529, },<br />
	{ 0x7fff, 0x4a52, 0x2d6b, 0x0000, },<br />
	{ 0x01e0, 0x0260, 0x0340, 0x0140, },<br />
	{ 0x7bff, 0x1ce8, 0x5294, 0x7fff, },<br />
<br />
	{ 0x67ff, 0x14a5, 0x56b5, 0x7fff, },<br />
	{ 0x7fff, 0x6739, 0x4e73, 0x18c6, },<br />
	{ 0x6460, 0x4631, 0x0821, 0x7bfe, },<br />
	{ 0x0000, 0x0000, 0x0000, 0x0000, },<br />
	{ 0x0000, 0x029d, 0x025b, 0x0195, },<br />
	{ 0x0000, 0x0131, 0x00cf, 0x0047, },<br />
	{ 0x0000, 0x01b6, 0x02df, 0x03e0, },<br />
	{ 0x68ba, 0x6660, 0x7c00, 0x3460, },<br />
};<br />
<br />
void Apply(int** tab)<br />
{<br />
	int				y=0, x=0;<br />
<br />
	for (y=0; y<16; y++)<br />
	{<br />
		for (x=0; x<4; x++)<br />
			printf("%d ", tab[y][x]);<br />
<br />
		printf("\n");<br />
	}<br />
}<br />
<br />
int main()<br />
{<br />
	Apply(g_tab);<br />
<br />
	return 0;<br />
}<br />

I don't see what's wrong with the code, but it crashes when calling tab[y][x]. Sniff | :^)

Can anybody help me and tell me what's wrong please?

Best regards.

Fred.

There is no spoon.

toxcct21-Aug-06 2:37

toxcct

21-Aug-06 2:37

void Apply(int*** tab);

TOXCCT >>> GEII power

[VisualCalc 3.0 updated ][Flags Beginner's Guide new! ]

bouli21-Aug-06 2:43

21-Aug-06 2:43

Hi,

I still get a crash with 3 '*' Frown | :(

There is no spoon.

prasad_som21-Aug-06 2:37

prasad_som

21-Aug-06 2:37

you need to access array like this,

for (y=0; y<16; y++)
{
for (x=0; x<4; x++)
printf("%d ", tab[x]);
tab++;
printf("\n");
}

Prasad
Notifier using ATL

Rage21-Aug-06 2:40

21-Aug-06 2:40

void Apply(int* tab)
{
int y=0, x=0;

for (y=0; y<16; y++)
{
for (x=0; x<4; x++)
printf("%d ", tab+y+x*y);

printf("\n");
}
}

In main:

Apply((int*)g_tab);

~RaGE();

I think words like 'destiny' are a way of trying to find order where none exists. - Christian Graus

bouli21-Aug-06 2:46

21-Aug-06 2:46

yes, it works that way Smile | :)

but for readability, I wished to used the tab[..][..] notation...

There is no spoon.

Rage21-Aug-06 2:51

21-Aug-06 2:51

void Apply(int* tab)
{
int y=0, x=0;
int **tab1=&tab;

for (y=0; y<16; y++)
{
for (x=0; x<4; x++)
printf("%d ", tab1[x][y]);

printf("\n");
}
}

~RaGE();

I think words like 'destiny' are a way of trying to find order where none exists. - Christian Graus

Zac Howland21-Aug-06 3:43

Zac Howland

21-Aug-06 3:43

If you are going to do that, you might as well make it a void*.

If you decide to become a software engineer, you are signing up to have a 1/2" piece of silicon tell you exactly how stupid you really are for 8 hours a day, 5 days a week

Zac

Rage21-Aug-06 4:26

21-Aug-06 4:26

Zac Howland wrote:
well make it a void*.

true.

Zac Howland wrote:
a 1/2" piece of silicon

Does this mean you have a female boss ? Oh wait no, it is a computer... Roll eyes | :rolleyes:

~RaGE();

I think words like 'destiny' are a way of trying to find order where none exists. - Christian Graus

fefe.wyx21-Aug-06 15:53

fefe.wyx

21-Aug-06 15:53

I don't think this should work. In tab1[0], you get tab; but from tab1[1] to tab1[3], they point to nowhere.

Waldermort21-Aug-06 2:42

Waldermort

21-Aug-06 2:42

declare the array size in the function

void Apply(int tab[16][4])<br />
{<br />
	int y=0, x=0;<br />
<br />
	for (y=0; y<16; y++)<br />
	{<br />
		for (x=0; x<4; x++)<br />
		printf("%d ", tab[y][x]);<br />
<br />
		printf("\n");<br />
	}<br />
}<br />
<br />
int main()<br />
{<br />
	Apply(g_tab);<br />
<br />
	return 0;<br />
}

bouli21-Aug-06 2:45

21-Aug-06 2:45

I forgot to mention that I don't know the size of the array. I just know it is a 2d array.
but it works this way Smile | :)

There is no spoon.

to find the width and height of an rectangular object Image

Zac Howland21-Aug-06 6:24

Zac Howland

21-Aug-06 6:24

bouli wrote:
I forgot to mention that I don't know the size of the array.

You'll need to pass a size parameter around as well then. sizeof behaves differently for memory allocated on the stack vs that allocated on the heap.

If you decide to become a software engineer, you are signing up to have a 1/2" piece of silicon tell you exactly how stupid you really are for 8 hours a day, 5 days a week

Zac

dinesh_IP21-Aug-06 1:59

dinesh_IP

21-Aug-06 1:59

Hi Friends,

I am working on one Image processing application and getting the Image of the object on the monitor using the CCD camera.

My task is to find out the actual width and height of an object(object is rectangular in shape). But the practical problem I am facing is how to corelate the actual size of the object with the Image on the monitor. One more critical thing is I need the accuracy in mm.

The Image that comes on the screen is not in 1:1 proportion with the actual object.

Please help if anybody allready worked on such kind of task.

Regards,
-Dinesh

Re: to find the width and height of an rectangular object Image

Christian Graus21-Aug-06 2:16

Christian Graus

21-Aug-06 2:16

That is ludicrous, it can't be done. How can you hope to take a bunch of pixels, work out from that how far an object was from the camera, and then work out the size to mm accuracy ?

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

Re: to find the width and height of an rectangular object Image

Rage21-Aug-06 2:43

Re: to find the width and height of an rectangular object Image

21-Aug-06 2:43

Christian Graus wrote:
size to mm accuracy

He did not tell how accurate the camera is.

~RaGE();

I think words like 'destiny' are a way of trying to find order where none exists. - Christian Graus

Christian Graus21-Aug-06 10:55

Christian Graus

21-Aug-06 10:55

Well, regardless, if the rectangle is something moving through the scene, how does he know how close to the camera it was ?

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

Re: to find the width and height of an rectangular object Image

Rage21-Aug-06 2:48