An error about RTC_VIDEO_DEVICE - C / C++ / MFC Discussion Boards

Re: user defined messages

David Crow14-Apr-05 2:43

David Crow

14-Apr-05 2:43

I use RegisterWindowMessage() for this.

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

send messages to other windows

cuongnguyennnn13-Apr-05 22:34

cuongnguyennnn

13-Apr-05 22:34

hi all
i don't know how to send messages to other windows or active window...i think i have to have HWND of other windows and then just use API function sendmessage()///but...

please help me
thanks/// Smile | :)

Re: send messages to other windows

ThatsAlok13-Apr-05 23:34

ThatsAlok

13-Apr-05 23:34

cuongnguyennnn wrote:
()///but...

but What?? Buddy

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Alok Gupta
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Re: send messages to other windows

mark novak14-Apr-05 0:47

mark novak

14-Apr-05 0:47

First you get the HWND of the window you want. You use a function like FindWindowEx to do this. Using Spy++ is great for figuring out your window hierarchy. Usually you want to get a window by the third parameter, the class because it doesn’t change like the text can change. Here is a short example:

HWND hNotepad = FindWindowEx(0, 0, "Notepad", 0);
if(hNotepad)
SendMessage(hNotepad, WM_SETTEXT, 0, (LPARAM) "Hah, I found you!");
else
MessageBox(0, "Couldn't find notepad.", "Darn", MB_OK);

Re: send messages to other windows

CuongNguyennn14-Apr-05 9:05

CuongNguyennn

14-Apr-05 9:05

so i know API function FindWindowEx but this function only finds other windows that we knew window's name.But i want to send messeages to other windows that i don't know window's name///

waiting...
thanks for...

Re: send messages to other windows

mark novak14-Apr-05 11:48

mark novak

14-Apr-05 11:48

Perhaps you're looking for EnumWindows(). Check it out.

Re: send messages to other windows

ThatsAlok14-Apr-05 19:28

ThatsAlok

14-Apr-05 19:28

Then you can bank upon Classname i.e. FindWindow find windows using two criteria either it use window caption to find window or Classname.

for getting the classname of that particular windows you can use external software like spy++ which comes with Visual studio.

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Alok Gupta
visit me at http://www.thisisalok.tk

"I ~~Think~~ Believe this Will Help"

An error about RTC_VIDEO_DEVICE

yeetins13-Apr-05 21:32

yeetins

13-Apr-05 21:32

When compiling or running,there is a debug error: " Run-Timeb Chenk Failure #3-the varible 'enVideo' is being used without being defined"

How can I solve this problem? thanks......

HRESULT CAVDlg::DeliverMedia(long lMediaType, RTC_MEDIA_EVENT_TYPE enType, <br />
							 RTC_MEDIA_EVENT_REASON enReason)<br />
{<br />
    RTC_VIDEO_DEVICE enVideo;<br />
    BOOL fShow;<br />
    HRESULT hr = S_OK;<br />
<br />
    <br />
    switch (lMediaType)<br />
    {<br />
    case RTCMT_VIDEO_SEND:<br />
        enVideo = RTCVD_PREVIEW;<br />
        break;<br />
<br />
    case RTCMT_VIDEO_RECEIVE:<br />
        enVideo = RTCVD_RECEIVE;<br />
        break;<br />
<br />
    case RTCMT_T120_SENDRECV:<br />
		break;<br />
<br />
	default:<br />
        return S_OK;<br />
    }<br />
<br />
    switch (enType) <br />
    {<br />
    case RTCMET_STARTED:<br />
        fShow = TRUE;<br />
        break;<br />
<br />
    case RTCMET_STOPPED:<br />
		::ShowWindow(m_hRecvVideoParent, SW_HIDE);<br />
		::SetParent(m_hRecvVideoParent, NULL);<br />
<br />
		::ShowWindow(m_hPrevVideoParent, SW_HIDE);<br />
		::SetParent(m_hPrevVideoParent, NULL);<br />
<br />
		SetState (RTCSS_IDLE);<br />
<br />
		SAFE_RELEASE(m_pSession);<br />
<br />
		DestroyWindow();<br />
		return S_OK;<br />
<br />
    case RTCMET_FAILED:<br />
        fShow = FALSE;<br />
        break;<br />
<br />
    default:<br />
        return S_OK;<br />
    }<br />
<br />
    hr = ShowVideo(enVideo, fShow);<br />
<br />
    return hr;<br />
<br />
}

Re: An error about RTC_VIDEO_DEVICE

Trollslayer13-Apr-05 23:22

Trollslayer

13-Apr-05 23:22

You only assign a value to enVideo in one case so if that case is not executed there will not be a value assigned.
When you declare enVideo assign a default value.

Elaine Rose | [Rose]

The tigress is here Big Grin | :-D

Re: An error about RTC_VIDEO_DEVICE

yeetins14-Apr-05 0:20

yeetins

14-Apr-05 0:20

Thank you very much!

Remote communication

itkid13-Apr-05 20:00

itkid

13-Apr-05 20:00

Hi,
I have developed one simulator in MFC/C++ which interact with the realtime control software on the same machine and perform well.Now i want this simulator should also communicated when control software run on different machine.Input for simulator should be the ip of the system where control software running.Can socket programming help in this requirement.
Thanks

Re: Remote communication

22491713-Apr-05 21:15

224917

13-Apr-05 21:15

Yes.

suhredayan
There is no spoon.

Re: Remote communication

itkid13-Apr-05 22:31

itkid

13-Apr-05 22:31

Can you please let me know how? If i will use socket programming
1)I need to know the ip of the machine where control software running.
2)Common port should be there for communication.

Do you have any suggestion to overcome performance issue?

Thanks

Re: Remote communication

ThatsAlok13-Apr-05 23:55

ThatsAlok

13-Apr-05 23:55

you will find this one intresting
http://www.codeproject.com/internet/ndk.asp[^]

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Alok Gupta
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"I ~~Think~~ Believe this Will Help"

Re: Remote communication

itkid14-Apr-05 0:23

itkid

14-Apr-05 0:23

I am not allow to make any change into control software code.I can only make changes into simulator code.

Re: Remote communication

ThatsAlok14-Apr-05 1:30

ThatsAlok

14-Apr-05 1:30

itkid wrote:
1)I need to know the ip of the machine where control software running.

yes you need as it reuired for socket connection

itkid wrote:
2)Common port should be there for communication.

if there is no common port how will you communicate betwwen two sockets Confused | :confused:

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Inclusion of header file in project

swarnamanoo13-Apr-05 19:27

swarnamanoo

13-Apr-05 19:27

Hi all, I have a project which has sub projects in it..one project will be the start up project.Can i inlcude the header file of one proj in another and Is it sufficient if i make the declaration in the startup file

Re: Inclusion of header file in project

mark novak14-Apr-05 0:56

mark novak

14-Apr-05 0:56

You can include files from all over the place. Observe:

// if you want to go up, use ..
#include "../secret.h"

// if you need to go down, use /
#include "/mission/command/base.h"

You could just make one huge header file which includes all the header files. Most people only do this with header files that rarely change because if you change say, base.h and everyone includes base.h then they all have to recompile if the change was drastic enough. Changing the size of an object or type of a function will do it.

read binary?

chal_adiera13-Apr-05 19:23

chal_adiera

13-Apr-05 19:23

hii,

how if user want to input in binary?
than the display the input...?
like...001001..

i already try if user input in decimal...
and display in binary...it work..

but if i want add some operation like OR and XOR
the value still in decimal...

anybody can help me...some advise or sample...

thanks..

chal

Re: read binary?

ddmcr13-Apr-05 21:56

ddmcr

13-Apr-05 21:56

Could you be more explicit ?
I can't really understand what exactly you need to do

m0n0

Re: read binary?

chal_adiera13-Apr-05 22:53

chal_adiera

13-Apr-05 22:53

hii..

thanks for your respond..

i want to do statistical test...
like...this example...

the flow :

K1 = 0000;//just example
M1 = 0000;

K2 = x ; ( x is input from user like 0001, 0010, 0100, 1000, etc)
M2 = 0000;

Temp1 = K1 OR M1;
Temp2 = K2 OR M2;

Result = Temp1 XOR Temp2;

from this flow...
I want to read input in binary and do bitwise operator
and printf also in binary..
I don't know how..

i already done but input in decimal and convert in binary..
but if i do bitwise operator, the result not in binary...

hope your idea..
need some guide..

chal

Re: read binary?

David Crow14-Apr-05 2:41

David Crow

14-Apr-05 2:41

How about something like:

int  ch, 
     x = 0;
char szInput[64];
 
printf("Enter a base-2 number: ");
 
do
{
    ch = _getch();
    if (ch == '0' || ch == '1')
    {
        printf("%c", ch);
        szInput[x++] = ch;
    }
} while (ch != 0xd);
 
szInput[x] = '\0';

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

Re: read binary?

chal_adiera14-Apr-05 17:38

chal_adiera

14-Apr-05 17:38

thank for your opinion...

but how to print out the value of ch..
after input from user...?

i try do this..

add after the loop
>>printf("output is: %c",ch);

nothing come out..

D'Oh! | :doh:

chal..

Re: read binary?

David Crow15-Apr-05 2:27

David Crow

15-Apr-05 2:27

Assuming you are using 0xd as the terminating condition, printing the variable ch after the loop terminates is obviously not going to work as 0xd is a whitespace character.

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

Service with logon user

K@LPESH13-Apr-05 19:15

K@LPESH

13-Apr-05 19:15

Hi friends,
I have one problem regarding Service.I have created service using Service API(i.e Winsvc.h).When I create and install service as LocalSystem account(i.e when its user is system,i.e last 2 parameters in CreateService are NULL) every thing works fine.But my problem requires service to have access to domain resources.So I have to specify the user name and password in last 2 parameters of CreateService function.But doing this doesn't work when I try to start servce after installing it.Starting it gives "logon failure" message.But when I change username and password manually in service property applet then every thing works fine.Can any one guide me where I am making mistake???

Waiting for positive reply.
Regards,
k@lpe$h

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