[DirectX9.0]How to retrive vector from Camera setting's View Matrix - C / C++ / MFC Discussion Boards

Why this error happens? How to resolve this ? (Repost : Modified, now the error is different)

kapardhi17-Apr-09 2:55

17-Apr-09 2:55

I get the previously said error when i build in the following combination
Pockect PC 2003 ;
Win32 (Win CE Emulator debug or Release) ;
Pocket PC 2003 device;

but when i chage the configuration to the following
Pockect PC 2003 ;
Win32 (Win CE Arm debug or Release) ;
Pocket PC 2003 device;

I get the following error :
winscard.lib(WINSCARD.dll) : fatal error LNK1112: module machine type 'THUMB' conflicts with target machine type 'ARM'

Any clue why this happens ?
Thanks !

Re: Why this error happens? How to resolve this ? (Repost : Modified, now the error is different)

Stuart Dootson17-Apr-09 3:12

Stuart Dootson

17-Apr-09 3:12

kapardhi wrote:
module machine type 'THUMB' conflicts with target machine type 'ARM'

Does this[^] help? (Search for THUMB in the linked page).

Also - this message maybe gives a clue as to why your original error occurs - how can you talk to smartcards in an emulator - it has no real hardware?!

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

Registry access problem

Mogaambo17-Apr-09 2:08

Mogaambo

17-Apr-09 2:08

this i used to access information from registry, but the problem is that it prints only first character of the string , instead of whole.

void GetProxyServerInfo()
{
try
{

HKEY hKey;

if (RegOpenKeyEx(HKEY_CURRENT_USER, TEXT("Software\\Microsoft\\Windows\\CurrentVersion\\Internet Settings"), 0L, KEY_ALL_ACCESS, &hKey)!=ERROR_SUCCESS)

printf("nError opening the desired subkey (doesn't exist?).n");

else
{

DWORD dwType = REG_SZ;

char buf[255] = {0};
DWORD dwBufSize = 255;

if( RegQueryValueEx(hKey,TEXT("ProxyServer"),0, &dwType, (LPBYTE)&buf, &dwBufSize) == ERROR_SUCCESS)
{
//here it prints only single character, not the whole string
cout<< buf;

}

else

cout << "can not query for key value\n";

RegCloseKey(hKey);
}

}
catch(char *error)
{
throw error;
}

}

“You will never be a leader unless you first learn to follow and be led.”
–Tiorio

"Coming together is a beginning, staying together is progress, and working together is success." Henry Ford

Re: Registry access problem

Jijo.Raj17-Apr-09 2:14

Jijo.Raj

17-Apr-09 2:14

Hello Mogaambo,

Is unicode defined? then use wcout instead of cout.

Regards,
Jijo.

_____________________________________________________

http://weseetips.com[^] Visual C++ tips and tricks. Updated daily.

Re: Registry access problem

Mogaambo17-Apr-09 2:19

Mogaambo

17-Apr-09 2:19

i used wcout still the problem exists.

“You will never be a leader unless you first learn to follow and be led.”
–Tiorio

"Coming together is a beginning, staying together is progress, and working together is success." Henry Ford

Re: Registry access problem

Mogaambo17-Apr-09 2:27

Mogaambo

17-Apr-09 2:27

i used wchar_t this and problem solved.

“You will never be a leader unless you first learn to follow and be led.”
–Tiorio

"Coming together is a beginning, staying together is progress, and working together is success." Henry Ford

Re: Registry access problem

Cedric Moonen17-Apr-09 2:31

Cedric Moonen

17-Apr-09 2:31

It would be better to use TCHAR, so that you are independant of the unicode settings. Take a look at this article[^] for extended information.

Cédric Moonen
Software developer

Charting control [v2.0 - Updated]
OpenGL game tutorial in C++

[DirectX9.0]How to retrive vector from Camera setting's View Matrix

kallol kumar17-Apr-09 2:04

kallol kumar

17-Apr-09 2:04

I have set view matrix like this:

D3DXVECTOR3 vEyePt( 0.0f, 2.0f, -3.0f );
D3DXVECTOR3 vLookatPt( 0.0f, 0.9f, 0.0f );
D3DXVECTOR3 vUpVec( 0.0f, 1.0f, 0.0f );
D3DXMATRIXA16 matView;
D3DXMatrixLookAtLH( &matView, &vEyePt, &vLookatPt, &vUpVec );
g_pd3dDevice->SetTransform( D3DTS_VIEW, &matView );

I want to retrive the eye, lookat and up vector for a purpose to change the vector.I get the eye point like this way:

D3DXMATRIXA16 m;
g_pd3dDevice->GetTransform(D3DTS_VIEW, &m);

D3DXMATRIX invm;
D3DXMatrixInverse(&invm,NULL,&m);

D3DXVECTOR3 v;
D3DXVECTOR3 cameraLoc;
v.x = 0;
v.y = 0;
v.z = 0;
D3DXVec3TransformCoord(&cameraLoc,&v,&invm);

D3DXVec3TransformCoord API get the eye vector = (0.0f, 2.0f, -3.0f ).Does anybody knows how the get the other lookat and up vector?

Thanks in advance....

Kallol

A question about Assert function

Obsidianhom17-Apr-09 1:10

Obsidianhom

17-Apr-09 1:10

Hi,
I know Assert function can raise a break in Debug mode. It helps a lot.

but when it is in Release mode,the Compile ignore Aseert function. then how can I know it meets a error?

for example:

int open_file(char * filename)
{
FILE *fp;
fp=fopen(filename,"wr"); //p1
assert(fp!=NULL); //p2

//do something
//p3
}

in Debug mode:
when p1 fail, fp will be NULL and the assert will raise a break,then it exit.

in Release mode:
the Compile ignore the assert function, what should I do if fopen failed?
if it will go on running statements after p3 ?

to avoid this happend, should I have to replace all the assert statements in Release mode?

thank you.

Re: A question about Assert function

Cedric Moonen17-Apr-09 1:14

Cedric Moonen

17-Apr-09 1:14

You are not using the assert properly. This function should be used only to test the code. An assert should never be reached in a released product. Assert is used to detect errors in your code, not detect a file which is missing. In your case, if the file doesn't not exist you should handle the error in a better way. For instance your function could return an error code or throw an exception which has to be handled at a higher level.

Cédric Moonen
Software developer

Charting control [v2.0 - Updated]
OpenGL game tutorial in C++

Re: A question about Assert function

China_Kevin17-Apr-09 2:58

China_Kevin

17-Apr-09 2:58

强烈同意楼上~~~~~

Re: A question about Assert function

Cedric Moonen17-Apr-09 3:00

Cedric Moonen

17-Apr-09 3:00

China_Kevin wrote:
强烈同意楼上~~~~~

Uh, what ?? Confused | :confused:

Cédric Moonen
Software developer

Charting control [v2.0 - Updated]
OpenGL game tutorial in C++

Re: A question about Assert function

China_Kevin17-Apr-09 3:26

China_Kevin

17-Apr-09 3:26

I am Chinese,HOHO, 强烈同意楼上~~~~~ just means I agree with you very much...

Re: A question about Assert function

China_Kevin17-Apr-09 3:33

China_Kevin

17-Apr-09 3:33

your name "Cedric" why your "C" is brighter than my name "China_Kevin" "C"

Re: A question about Assert function

Rajesh R Subramanian17-Apr-09 3:36

Rajesh R Subramanian

17-Apr-09 3:36

Because he is an MVP.

It is a crappy thing, but it's life -^ Carlo Pallini

Re: A question about Assert function

China_Kevin17-Apr-09 3:44

China_Kevin

17-Apr-09 3:44

He is a valuable man?

Re: A question about Assert function

David Crow17-Apr-09 5:00

David Crow

17-Apr-09 5:00

I hereby bestow on you a "brighter" name:

China_Kevin

Carry it with honor.

"Old age is like a bank account. You withdraw later in life what you have deposited along the way." - Unknown

"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

Re: A question about Assert function

China_Kevin17-Apr-09 15:00

China_Kevin

17-Apr-09 15:00

You lie to me~~~~~
That a walloping huge lie!! Cry | :((

Re: A question about Assert function

dandanfeng16017-Apr-09 15:56

dandanfeng160

17-Apr-09 15:56

Me too~

Re: A question about Assert function

Obsidianhom17-Apr-09 3:54

Obsidianhom

17-Apr-09 3:54

I got the idea and I known how to do it.

thank you both Luc Pattyn and Cédric Moonen~ Smile | :)

Re: A question about Assert function

China_Kevin17-Apr-09 4:14

China_Kevin

17-Apr-09 4:14

why do not think me~~~~~o(∩_∩)o...哈哈 Poke tongue | ;-P

Re: A question about Assert function [modified]

Luc Pattyn17-Apr-09 1:53

Luc Pattyn

17-Apr-09 1:53

I concur with Cédric.
Use assert to discover logic flaws in your program while debugging, don't use it to detect exceptional circumstances, things that go wrong not because there is an error in your program, but because the circumstances are against you, as in a missing file. Hence:

// EDIT
#define null NULL
// /EDIT

if (fp==null) {
    // whatever needs to happen when the file won't open
} else {
    // whatever you want to do with the file
}

Luc Pattyn [Forum Guidelines] [My Articles]

Avoiding unwanted divs (as in "articles needing approval") with the help of this FireFox add-in

modified on Friday, April 17, 2009 2:59 PM

Please

CPallini17-Apr-09 2:02

CPallini

17-Apr-09 2:02

Please no C#ing here. Poke tongue | ;-P

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: Please

Luc Pattyn17-Apr-09 2:05

Luc Pattyn

17-Apr-09 2:05

sorry, I meant NULL of course. Or ZERO, ZILCH, RIENDUTOUT, NADA, NIENTE, whatever you fancy.

Smile | :)

Luc Pattyn [Forum Guidelines] [My Articles]

Avoiding unwanted divs (as in "articles needing approval") with the help of this FireFox add-in

Re: Please

CPallini17-Apr-09 2:15

CPallini

17-Apr-09 2:15

Well I see you agree with me (and Rajesh, I suppose): C/C++'s NULL is more imperative than C# cheap fake one.
Big Grin | :-D

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