C / C++ / MFC Discussion Boards

Re: LinkedList

Michael Dunn19-May-07 6:22

Michael Dunn

19-May-07 6:22

typedef is your friend when dealing with complex types:

typedef char* (*func1)();
typedef func1 (*func2)();
func2 myarray[N];

--Mike--
Visual C++ MVP Cool | :cool:

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Dunder-Mifflin, this is Pam.

Why ?

Sofian Teja19-May-07 0:24

Sofian Teja

19-May-07 0:24

int test = 1 + 2 + 3;
+2 + 3 +4;

after I compile with Visual studio 6 or .net

the answer test is 6

Is there anyone know what is weird ? the compiler will not have any error message, is this kind of bug ?

Thanks for advance.

coding is just the beginning

Re: Why ?

OregonGhost19-May-07 0:31

OregonGhost

19-May-07 0:31

Of course
int test = 1 + 2 + 3;
equals 6.
+2 + 3 +4;
is a seperate expression. Remove the first semicolon if you want to connect the two expressions.
int test = 1 + 2 + 3 +2 + 3 +4;
will result in test == 15.

Re: Unexpected compiler behaviour (Why ?)

Moak19-May-07 2:21

Moak

19-May-07 2:21

Sofian Teja wrote:
int test = 1 + 2 + 3;

Evaluates to 6 (according to Adam Riese).

Sofian Teja wrote:
+2 + 3 +4;

Is an empty expression (it does nothing), always switch on your compiler warnings and you will be notified when such things happen accidentally. Related articles: Getting pragmatic with warnings, here and here.

Hope it helps.

Re: Why ?

Michael Dunn19-May-07 6:30

Michael Dunn

19-May-07 6:30

Any expression can also be a statement. The statement
+2 + 3 +4;
is perfectly legal. It calculates the value and does nothing with it. (Of course, in optimized builds, the statement will be removed since it does nothing and has no side effects.)

--Mike--
Visual C++ MVP Cool | :cool:

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Dunder-Mifflin, this is Pam.

question about linked list

ginjikun18-May-07 21:43

ginjikun

18-May-07 21:43

hi to all!
would like to ask..
can priority be implemented using linked list?
if yes, can you please show me how?

thanks a lot!

newbie Smile | :)

Re: question about linked list

Manoj Kumar Rai18-May-07 23:44

Manoj Kumar Rai

18-May-07 23:44

Yea It can be.

The main logic change will be while "Inserting" a new item.

While Inserting a new "Item" of say "n" priority you have to check that it should be inserted at last item of the same priority but before a low priority item.

Manoj
Never Give up

Re: question about linked list

ginjikun19-May-07 21:55

ginjikun

19-May-07 21:55

hi manojkumarrai! thanks for the reply...
for the implementation... should i have pointer to the last item for each priority category?

thanks!

newbie Smile | :)

Re: question about linked list

Moak18-May-07 23:46

Moak

18-May-07 23:46

ginjikun wrote:
can priority be implemented using linked list?

Does this help? STL+data+container+priority[^]

how to use GetExitCodeThread Function

neha.agarwal2718-May-07 21:19

neha.agarwal27

18-May-07 21:19

Hi all,

Can anybody plz tell me how to use GetExitCodeThread Function.

my thread object is CloseTh.I am not getting how to pass second parameter.

DWORD lpExitCode;
GetExitCodeThread(CloseTh->m_hThread,lpExitCode);

when i write this,this error is coming

cannot convert parameter 2 from 'unsigned long' to 'unsigned long *'

thanks in advance

Re: how to use GetExitCodeThread Function

Hamid_RT18-May-07 21:26

Hamid_RT

18-May-07 21:26

DWORD lpExitCode=0;
GetExitCodeThread(CloseTh->m_hThread,&lpExitCode);

WhiteSky

Re: how to use GetExitCodeThread Function

vijay_aroli18-May-07 21:38

vijay_aroli

18-May-07 21:38

Whitesky was quick to answer. Smile | :)

neha.agarwal27 wrote:
DWORD lpExitCode;

Do make a habit to initialize the variables. Smile | :)

Regards,
Vijay.

God may not give us what we 'want', but he surely gives us what we 'need'.

Re: how to use GetExitCodeThread Function

Michael Dunn18-May-07 21:58

Michael Dunn

18-May-07 21:58

Read the error message. The function takes a pointer to an unsigned long but you are passing an unsigned long. (DWORD is a typedef that resolves to unsigned long.) You need to pass the address of that DWORD variable. Fixing the Hungarian prefix would be nice too. Wink | ;)

--Mike--
Visual C++ MVP Cool | :cool:

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Dunder-Mifflin, this is Pam.

creation of IPADDRESS control-Please help me

prathuraj18-May-07 20:51

prathuraj

18-May-07 20:51

how to create IPAddress control with the style IPAS_NOVALIDATE

Re: creation of IPADDRESS control-Please help me

Hamid_RT18-May-07 21:53

Hamid_RT

18-May-07 21:53

See An IP address masked edit control[^] is your answer?

WhiteSky

Re: creation of IPADDRESS control-Please help me

Mark Salsbery19-May-07 14:04

Mark Salsbery

19-May-07 14:04

I can't find IPAS_NOVALIDATE defined in any of my platform SDK/MSDN files.

What is it?

Mark

"Posting a VB.NET question in the C++ forum will end in tears." Chris Maunder

How to fast forward and rewind in directshow

rjkg18-May-07 19:22

rjkg

18-May-07 19:22

I am playing movie in directshow . now I want to fastforward the movie
2x 3x 4x etc . also I want to rewind the movie. can any body tell me
how it is possible

RajeshGupta

Re: How to fast forward and rewind in directshow

Hamid_RT18-May-07 20:06

Hamid_RT

18-May-07 20:06

On the MCI functions you can use of MCI_DGV_SET_SPEED see MCI_SET[^]

WhiteSky

Re: How to fast forward and rewind in directshow

rjkg18-May-07 23:36

rjkg

18-May-07 23:36

I want to fastforward and rewind in localfile scenario . i .e
I am using the .asf or .wmv file .

RajeshGupta

Re: How to fast forward and rewind in directshow

Mark Salsbery19-May-07 14:09

Mark Salsbery

19-May-07 14:09

Seeking the Filter Graph[^]

"Posting a VB.NET question in the C++ forum will end in tears." Chris Maunder

Re: How to fast forward and rewind in directshow

rjkg20-May-07 21:58

rjkg

20-May-07 21:58

Hi,
I know that but problem is that when I set g_pSeek->SetRate(2.0);
it fast forward for few milli seconds then again playback with
normal speed . again tell me how to rewind the playback.

RajeshGupta

Re: How to fast forward and rewind in directshow

Mark Salsbery21-May-07 8:20

Mark Salsbery

21-May-07 8:20

That's going to depend on the filters in the graph.

For example, if you are playing ASF files with the Windows Media ASF Reader filter, then
SetRate() isn't supported for any speeds except 1.0.

IMediaSeeking::GetCapabilities() will give you info on supported seeking capabilities (including
reverse playback).

Mark

"Posting a VB.NET question in the C++ forum will end in tears." Chris Maunder

Re: How to fast forward and rewind in directshow

Hamid_RT21-May-07 8:43

Hamid_RT

21-May-07 8:43