C / C++ / MFC

Re: Problem with combo Box-values get repeating

31-Oct-07 3:36

SnaKeBeD wrote:
...how do i send that message?

The same way you would send the CB_ADDSTRING message, unless MFC is hiding all of these details from you.

"Normal is getting dressed in clothes that you buy for work and driving through traffic in a car that you are still paying for, in order to get to the job you need to pay for the clothes and the car and the house you leave vacant all day so you can afford to live in it." - Ellen Goodman

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

SnaKeBeD31-Oct-07 3:48

SnaKeBeD

31-Oct-07 3:48

thanx

||SnAkeBed||

Trying to create a guid in C++ from my code

LCI31-Oct-07 2:22

LCI

31-Oct-07 2:22

I used a GUID to represent a portion of a unique file name do my file looked like: myfilename_GUID.txt

In C# i just do
String strRandomName = System.Guid.NewGuid().ToString();

However, what do i do in C++?

David Crow31-Oct-07 2:26

31-Oct-07 2:26

LCI wrote:
However, what do i do in C++?

What's the problem? You previously stated that, "I used a GUID to represent a portion of a unique file name...", so did that work?

George L. Jackson31-Oct-07 2:41

George L. Jackson

31-Oct-07 2:41

He created the GUID in C# and he wants to know how to do the same thing in C++.

"We make a living by what we get, we make a life by what we give." --Winston Churchill

Re: Trying to create a guid in C++ from my code [modified]

jhwurmbach31-Oct-07 2:30

jhwurmbach

31-Oct-07 2:30

LCI wrote:
However, what do i do in C++?

They hid it in the documentation. Those Bastards!
The secret lies in searching the MSDN for "GUID" and "creating".
Poke tongue | ;-P

But maybe what you want is just ::tmpfile() or ::tempnam() from stdio.h?

Let's think the unthinkable, let's do the undoable, let's prepare to grapple with the ineffable itself, and see if we may not eff it after all.
Douglas Adams, "Dirk Gently's Holistic Detective Agency"

KenThompson31-Oct-07 2:43

KenThompson

31-Oct-07 2:43

#if (defined(__unix__) || defined(unix)) && !defined(USG)
#include <sys/param.h>
#endif

#include <stdio.h>
#include <assert.h>
#if defined(_WIN32) || defined(__CYGWIN__)
#include <objbase.h>
#elif defined MACOSX
#include <string.h>
#include <uuid/uuid.h>
#elif defined __FreeBSD__
# if __FreeBSD_version >= 500000
# include <uuid.h>
# else
# error FreeBSD versions prior to 500000 does not support uuid(3)
# endif
#else
#include <uuid/uuid.h>
#endif

///Above are my includes, below is the calls abstracted

#if defined(_WIN32) || defined(__CYGWIN__)
GUID randomGuid;
// create random GUID
randomGuid = GUID_NULL;
::CoCreateGuid(&randomGuid);
if (randomGuid == GUID_NULL)
{
fprintf(stderr,"Couldn't create a random GUID\n");
return;
}
memcpy(m_bufuid, &randomGuid, 16);
#elif defined __FreeBSD__
uuid_t uid; // uuid_t is a struct
uuid_create(&uid, NULL);
memcpy(m_bufuid, &uid, 16);
#else
uuid_t uid; // uuid_t is defined as unsigned char[16]
uuid_generate(uid);
memcpy(m_bufuid, uid, 16);
#endif

std::string tmp;
char cuid[100]; // Uid::GetUid temporary

sprintf(cuid,"%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x",
m_bufuid[0],m_bufuid[1],m_bufuid[2],m_bufuid[3],
m_bufuid[4],m_bufuid[5],m_bufuid[6],m_bufuid[7],
m_bufuid[8],m_bufuid[9],m_bufuid[10],m_bufuid[11],
m_bufuid[12],m_bufuid[13],m_bufuid[14],m_bufuid[15]);
tmp = cuid;

Done.

-- modified at 8:48 Wednesday 31st October, 2007

jhwurmbach31-Oct-07 3:17

jhwurmbach

31-Oct-07 3:17

Hey! I did not ask!

Anyway, your code is missing the m_bufuid declaration.

Load AVI streams with MCIWnd.OpenInterface

KenThompson1-Nov-07 2:47

KenThompson

1-Nov-07 2:47

I pressed reply! Sorry it got pasted under you! That buffer is simply a char[16] buffer.

sdancer7531-Oct-07 2:04

sdancer75

31-Oct-07 2:04

Hi,

How can i load & play an AviStream using the OpenInterface macro ? My code compiles just fine but it does not show anything.

void CWrapperDlg::OnPlayAVI()
{
// Create the window like you would any Windows control.
m_mciWnd.Create(WS_CHILD | WS_VISIBLE | MCIWNDF_NOPLAYBAR | MCIWNDF_NOERRORDLG | MCIWNDF_NOTIFYERROR, CRect(0, 0, 300,300), this, 1234);

// Open the AVI file.

HRESULT hr;
PAVISTREAM pstream;

AVIFileInit();
hr = AVIStreamOpenFromFile(&pstream, "test.avi", streamtypeVIDEO, 0, OF_READ, NULL);
if (FAILED(hr))
AfxMessageBox("error");

m_mciWnd.OpenInterface((PAVISTREAM) &pstream);

//m_mciWnd.Open(strAVIPath);

// Play the opened AVI file.
m_mciWnd.Play();

// To keep the demo simple - can't play the AVI file more than one time.
((CButton *)GetDlgItem(IDB_PLAY))->EnableWindow(FALSE);
}

Regards,

sdancer75

maximal number of dialogs

baerten31-Oct-07 1:56

baerten

31-Oct-07 1:56

Hi everybody,

does it exist a maximal number of dialog ressources into a MFC Project.
My dialogs are under form of CFormView, but still now i have already over 25 dialogs

Does the project become buggy if a certain number of dialog ressouces is reached?

Big thanks for answers Smile | :)

Paresh Chitte31-Oct-07 2:08

Paresh Chitte

31-Oct-07 2:08

I don't think so. My project is having around 50 + dialogs.

Regards,
Paresh.

baerten31-Oct-07 2:16

baerten

31-Oct-07 2:16

mmh, i'm at the beginning of the application and i have already more than 20.
I even don't know how much it will be in future, but seriously over 100 Unsure | :~

Shivarudrayya H31-Oct-07 2:17

Shivarudrayya H

31-Oct-07 2:17

I think u can have as many numbers u want.
Coz my application have 46.. Smile | :)

Reagards
Shiva

David Crow31-Oct-07 2:28

31-Oct-07 2:28

Since they only get loaded when asked for and are discarded when no longer used, the number is, for all intents and purposes, limitless.

Thanks to you all

baerten31-Oct-07 4:19

baerten

31-Oct-07 4:19

how to change the color of message box

Randor 31-Oct-07 4:34

Randor

31-Oct-07 4:34

The number of dialogs in your project resource file does not affect anything except maybe compilation time. Your application may use slightly additional memory with the definitions of those dialogs in the PE image. But nothing to be worried about.

Maximum number of window objects you can have open within Windows XP is 32767. There is a hard limit per process of 10,000 window handles. Yes, there is a point where too many open windows will degrade application performance. The threshold at which this will occur depends on processor speed and physical RAM.

I am increasingly becoming a fossil so my comments apply to my knowledge of the XP kernel, I have not delved into the Vista abyss yet. I am still waiting for the flames to die down.

Best Wishes,
-Randor (David Delaune)

rajneshmalik31-Oct-07 1:21

rajneshmalik

31-Oct-07 1:21

hi to all
how to change the color of message box generated by AfxMessageBox("some line") function

thank u in advance

D'Oh! | :doh:

malik

Re: how to change the color of message box

David Crow31-Oct-07 2:29

31-Oct-07 2:29

You can't. If you want that type of customization, you'll need to roll your own.

Cursor help: [modified]

Hakan Bulut31-Oct-07 0:41

Hakan Bulut

31-Oct-07 0:41

How can i do that when my dialog active text-cursor already active in the editbox? Cool | :cool:

Can anyone get the answer my question? My question seems to be quite open, i think.

-- modified at 6:47 Wednesday 31st October, 2007

What is this¿ "This is a FIRTBOY"

Karismatic31-Oct-07 0:55

Karismatic

31-Oct-07 0:55

As far as i get from ur description
you want to set the focus on the editbox whenever ur dialog is initialised.

in this case you have to code in the OnInitDialog() function
where u can use the control variable of the editbox lets suppose m_ctrlBox

u have to write

m_ctrlBox.SetFocus()

Regards,
Pankaj Sachdeva

There is no future lies in any job but future lies in the person who holds the job

Hakan Bulut31-Oct-07 1:04

Hakan Bulut

31-Oct-07 1:04

thanks

What is this¿

Roger Broomfield31-Oct-07 1:39

Roger Broomfield

31-Oct-07 1:39

Dont forget to return FALSE if you do this.

Wouldnt it be better to let the dialog manager do this for you by ensuring that the desired edit control is first in the tab order. To change the tab order when editting the dialog resource use menu option Layout->TabOrder(Ctrl+D) the taborder will be shown by numberred blue sqaures in the top-left of each control.

Mark Salsbery31-Oct-07 5:30

Mark Salsbery

31-Oct-07 5:30

For edit controls, you may want to try this instead of SetFocus()...

GotoDlgCtrl(&m_EditCtl);

Why you may want to use this instead? Here's what the docs say...

"This message performs additional dialog box management operations
beyond those performed by the SetFocus function WM_NEXTDLGCTL
updates the default pushbutton border, sets the default control identifier,
and automatically selects the text of an edit control (if the target window
is an edit control)."

Whatever gives you the result you want Smile | :)

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]