C / C++ / MFC

Re: Problem in ReadFile()

21-Oct-05 3:06

prasad_som wrote:
ReadFile(hr,&szBuffer,SIZE,&buff,NULL);

Check the second and third parameters. They should be:

ReadFile(hr, szBuffer, sizeof(szBuffer), &buff, NULL);

"Take only what you need and leave the land as you found it." - Native American Proverb

prasad_som21-Oct-05 3:10

prasad_som

21-Oct-05 3:10

DavidCrow wrote:
Check the second and third parameters

yes, thanks David.Its corrected now.

Playing *.avi files[modified]

ddmcr21-Oct-05 1:07

21-Oct-05 1:07

Hello guys,
I have a MFC dialog based application , where I want to play *.avi files.
Suppose I have a button "Load video" and after clicking it and choosing the specified *.avi file , I want to be able to play(pause,stop) the video in my dialog.

Any suggestions on how to do it?

PS. I had problems with CAnimateCtrl , When I tried to Open the file :

if(!m_animate.Open("c:\\file.avi"))
   MessageBox("Could not open video");

I got the latter MessageBox. Though file.avi existed on C: disk.

"Success is the ability to go from one failure to another with no loss of enthusiasm." - W.Churchill

-- modified at 7:44 Friday 21st October, 2005

prasad_som21-Oct-05 1:54

prasad_som

21-Oct-05 1:54

Just a check.
Does file runs in media player?
Do you have necessary rights on file?

ddmcr21-Oct-05 2:05

21-Oct-05 2:05

prasad_som wrote:
Does file runs in media player?

yes it does.
But is not there another way to play *.avi files without using CAnimateCtrl

"Success is the ability to go from one failure to another with no loss of enthusiasm." - W.Churchill

The NULL Developer21-Oct-05 2:14

The NULL Developer

21-Oct-05 2:14

why dont u try using windows media player activex control

"Do first things first, and second things not at all."
— Peter Drucker.

ddmcr21-Oct-05 2:19

21-Oct-05 2:19

I do not have any experience with using ActiveX controls.
Could you give me little tips on how to do this, I am using Visual Studio.Net 2003.

Thanks in advance

"Success is the ability to go from one failure to another with no loss of enthusiasm." - W.Churchill

The NULL Developer21-Oct-05 2:41

The NULL Developer

21-Oct-05 2:41

in the dialog editor view, right click on the tool bar panel, choose add/remove items. on the next dialog, choose com components tab and tick windows media player in the list. click ok and then u can use it like any other control.

"Do first things first, and second things not at all."
— Peter Drucker.

ddmcr21-Oct-05 2:57

21-Oct-05 2:57

thanks for help , but on little thing more.
i have done everything but when I write m_player.openPlayer("c:\\file.avi"); New instance of MediaPlayer is opened and the file is played there.
But I need the video to be played inside my dialog so I thought this should do the job :
m_player.launchURL("c:\\file.avi");
But I get a error MessageBox with empty text Confused | :confused:

Do you have any idea what is wrong??

"Success is the ability to go from one failure to another with no loss of enthusiasm." - W.Churchill

-- modified at 8:59 Friday 21st October, 2005

David Crow21-Oct-05 4:45

21-Oct-05 4:45

Giorgi Moniava wrote:
Do you have any idea what is wrong??

Yes, you need to use the setURL() method.

"Take only what you need and leave the land as you found it." - Native American Proverb

David Crow21-Oct-05 3:26

21-Oct-05 3:26

CAnimateCtrl::Open() simply sends a ACM_OPEN message to the control. Per MSDN, that message will fail if the .avi file contains any audio. Do you think this is the case?

"Take only what you need and leave the land as you found it." - Native American Proverb

ddmcr21-Oct-05 3:36

21-Oct-05 3:36

DavidCrow wrote:
CAnimateCtrl::Open() simply sends a ACM_OPEN message to the control. Per MSDN, that message will fail if the .avi file contains any audio. Do you think this is the case?

Yes David now I took a better look in MSDN and found :
"Open does not support sound in an AVI clip; you can open only silent AVI clips"
And my video of course contains audio.
Then can you help me with opening and playing *.avi - s with audio?

Thanks in advance

"Success is the ability to go from one failure to another with no loss of enthusiasm." - W.Churchill

David Crow21-Oct-05 3:48

21-Oct-05 3:48

I think you might have to consider using one of the ActiveX controls (e.g., Windows Media Player from wmp.dll, Microsoft Multimedia Control from mci32.ocx).

"Take only what you need and leave the land as you found it." - Native American Proverb

ddmcr21-Oct-05 3:55

regarding the listcontrol

21-Oct-05 3:55

Yes I tried but I get strange errors.
Look at my posts with "The NULL DEVELOPER".
Maybe you know whats the problem,

thanks

"Success is the ability to go from one failure to another with no loss of enthusiasm." - W.Churchill

FarPointer21-Oct-05 0:46

FarPointer

21-Oct-05 0:46

HI,

wat is the method to insert into a coloumn of a listcontrol is it a must to uses Insertitem(,,,) for that row inorder to use the insertion into the repective coloumn header .

Thanx
FarPointer

Re: regarding the listcontrol

ThatsAlok21-Oct-05 1:11

ThatsAlok

21-Oct-05 1:11

Use CListCtrl::SetItemText(..)

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta
VC Forum Q&A :- I/ IV

How to test my source code

aloktambi21-Oct-05 0:21

aloktambi

21-Oct-05 0:21

i am writing one multithreading application using MFC library . i am not able to test my applcation. can you tell me how i test multithreading application of MFC.or any tool for testing?

Re: How to test my source code

toxcct21-Oct-05 0:51

toxcct

21-Oct-05 0:51

you mean multi threaded, or many exes that are talking together ?

if multithreaded, just run your program, set breakpoints, see what happens...

TOXCCT >>> GEII power
[toxcct][VisualCalc]

Re: How to test my source code

Anonymous21-Oct-05 22:55

Anonymous

21-Oct-05 22:55

I want to test multithreaded in serial comunication .how to test serial comm.application

how to stop unfinished function??

cell5120-Oct-05 21:54

cell51

20-Oct-05 21:54

may be this is my last question for my minithesis, before i graduate Smile | :)

(i hope)

function A runing when a press button "start", how i can stop function A when it still running by press button "stop"

toxcct20-Oct-05 22:09

toxcct

20-Oct-05 22:09

you will have to deport the actions performed by function A into a worker thread so that the GUI is not frozen, and you will so be able to press a STOP button to end the treatments...

TOXCCT >>> GEII power
[toxcct][VisualCalc]

Cedric Moonen20-Oct-05 22:14

Cedric Moonen

20-Oct-05 22:14

And to complete the response of toxcct: your function need also to be 'finishable'. That is, a kind of loop you can ask to terminate. Something like this:

while (bContinue)<br />
{<br />
    // Perform actions here<br />
};

Then, you can stop your function by setting bContinue to false. But be carefull when doing that, you'll have to secure the access to those 'shared' variable inside critical sections (take a look at MSDN for more details).

Of course, there is still the solution to kill your worker thread but that's not really an elegant solution Unsure | :~

SimonS20-Oct-05 23:57

SimonS

20-Oct-05 23:57

If you start the function on a separate thread you can call Thread.Abort.

Maybe that will sort this out.

Cheers,
Simon

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