Menu in a dialog - C / C++ / MFC Discussion Boards

Moak24-Oct-02 19:35

24-Oct-02 19:35

Rickard Andersson wrote:
I'm working on a server that will save all clients in a global std::list object. When a client whants to send to another client on the server, the client iterate through the std::list object and send the message to all clients.

Hej Rickard,
with a mutithreading socket concept this is a must have IMHO. Reading isn't critical, but changing or removing elements from a list: Another task could e.g. remove an element from the list (when a client signs off), which could invalid the iterator used by another thread. So, that's why you have to make exclusive access to your global network data, no matter if threads wants to read or write.

Re: Critical sections (Moak & Co.)

Rickard Andersson²⁰24-Oct-02 21:39

Rickard Andersson²⁰

24-Oct-02 21:39

Thaaaaaaaaaaank you Moak!
See your ICQ for an important message from me! Smile | :)

Rickard Andersson@Suza Computing
C# and C++ programmer from SWEDEN!
UIN: 50302279
E-Mail: nikado@pc.nu
Speciality: I love C#, ASP.NET and C++!

Re: Critical sections (Moak & Co.)

Anonymous24-Oct-02 22:08

Anonymous

24-Oct-02 22:08

no problem... mompl, starting ICQ... Smile | :)

How to detect a CView closing?

Ravi Bhavnani24-Oct-02 11:19

Ravi Bhavnani

24-Oct-02 11:19

[ Returning to the doc-view architecture after 8 years, so excuse the lameness of this question! ]

I have an MDI app that's capable of displaying documents of type CFooDoc and CBarDoc. I've modified the file opening logic to restrict the number of open CFooDoc documents to 1.

What I want to do is automagically close all CBarDoc documents when the user closes the solitary CFooDoc document. I can do this by calling the CloseAllDocuments() on CBarDoc's doc template.

My question is, how do I detect that the CFooView is closing?

Thanks,

/ravi

Let's put "civil" back in "civilization"
http://www.ravib.com
ravib@ravib.com

Re: How to detect a CView closing?

Ravi Bhavnani24-Oct-02 11:20

Ravi Bhavnani

24-Oct-02 11:20

Never mind. Smile | :)

I just overrode the parent frame's OnClose().

/ravi

Let's put "civil" back in "civilization"
http://www.ravib.com
ravib@ravib.com

Re: How to detect a CView closing?

Neville Franks24-Oct-02 12:00

Neville Franks

24-Oct-02 12:00

Hi Ravi,
Or in ~CFooView() or CFooView::PostNCDestroy() or ...

Neville Franks, Author of ED for Windows. www.getsoft.com

Re: How to detect a CView closing?

Ravi Bhavnani25-Oct-02 1:42

Ravi Bhavnani

25-Oct-02 1:42

Hi Neville,

Actually the tack I took only handled the case when the user closed the view manually by clicking the "x" button. It didn't handle the ID_FILE_CLOSE case, so I used a custom command and handled document closure myself.

/ravi

Let's put "civil" back in "civilization"
http://www.ravib.com
ravib@ravib.com

Menu in a dialog

sikrip24-Oct-02 11:14

sikrip

24-Oct-02 11:14

Hi,
how can i add a menu in a dialog based application??

Re: Menu in a dialog

Ravi Bhavnani24-Oct-02 11:21

Ravi Bhavnani

24-Oct-02 11:21

Create a menu in the resource editor, then modify the dialog's "Menu" property (also in the resource editor) to point to that menu.

/ravi

Let's put "civil" back in "civilization"
http://www.ravib.com
ravib@ravib.com

Re: Menu in a dialog

Anonymous24-Oct-02 18:35

Anonymous

24-Oct-02 18:35

the first,you create a new menu whit ID_DLG_MENU
the second,see the dialog property.
select the ID_DLG_MENU int the Menu:

change dialog font

lucy24-Oct-02 10:54

lucy

24-Oct-02 10:54

I have a dialog template. I create a CPropertyPage class on it, and add it to my property sheet.

On this dialog, I have a combo box as a drop list. My question is: the combo box content is added at run-time. Its string format is as follows:
%2d: %-35s %02d

The problem is: using the default font, the string part will have variable length. I tried to overwrite the OnSetFont() as:

// use another font instead of the default one
if ( HFONT(myFont) ) // my font is created in the constructor and deleted in destructor, declared as a member variable
{
    pFont->DeleteObject();
    pFont = &myFont;
}

CPropertyPage::OnSetFont(pFont);

I have tried to use different font, "Arial", "Courier", "System", "Times New Roman", but all of them gave me a big bold ugly font displayed on the dialog. Confused | :confused:

what's the correct way to do it?

Thank you a lot!

Re: change dialog font

alex.barylski24-Oct-02 13:24

alex.barylski

24-Oct-02 13:24

I'm not sure I understand what the problem is...

Your string part will be variable width...? Whys that a bad thing...?

I suppose your gonna wanna use a fixed width font like Courier New (Courier should work also???)

What are you trying to acocmplish...? Just change the font..?

Do it inside InitDialog() with a call to the controls SetFont()

"An expert is someone who has made all the mistakes in his or her field" - Niels Bohr

CList and sockaddr_in

User 665824-Oct-02 9:47

User 6658

24-Oct-02 9:47

Hi
I want to store IPs in a linked list using CList, but don't know how to do that. Servers already in the list should not be stored in the list again. Currently I can't compile my project due to errors.
This is what I want to do:

CList<sockaddr_in, sockaddr_in&> SockList // <- is this correct?

for(int i=0; i<num_servers; i++)
{
    // check whether server is already in the list
    if(SockList.Find(server) == NULL) // server is not in list
          SockList.AddTail(server);
}

server is of type sockaddr_in*.
How can I achieve this?

thanks in advance
Greg

modified 12-Sep-18 21:01pm.

Re: CList and sockaddr_in

valikac24-Oct-02 9:59

valikac

24-Oct-02 9:59

You cannot search a list of pointer using its default equality comparison.

I recommend an STL list or map and with a custom equality or equivalent search algorithm via a function object.

Kuphryn

Re: CList and sockaddr_in

User 665824-Oct-02 10:19

User 6658

24-Oct-02 10:19

Thanks

Is there no way to copy the values of a sock_addr* pointer into a normal sock_addr variable?
This way it would be possible, or am I wrong? Confused | :confused:

regards

modified 12-Sep-18 21:01pm.

Re: CList and sockaddr_in

valikac24-Oct-02 10:50

valikac

24-Oct-02 10:50

Consider memcpy(). I am not completely sure that will work for sock_addr.

Kuphryn

Re: CList and sockaddr_in

Rickard Andersson²⁰24-Oct-02 11:27

Rickard Andersson²⁰

24-Oct-02 11:27

But if he do something like this then:

sockaddr_in addr = *addrpointer;

I don't know if this is allowed! Roll eyes | :rolleyes:

Rickard Andersson@Suza Computing
C# and C++ programmer from SWEDEN!
UIN: 50302279
E-Mail: nikado@pc.nu
Speciality: I love C#, ASP.NET and C++!

Combo box + spin control

User 988524-Oct-02 8:15

User 9885

24-Oct-02 8:15

I want to add a spin control in a combo box. When dropped down, the combo box shows the items in the combo. But, the up/down arrow keys should not change the items in the combo automatically, but send the notification of the spin control to the parent window.

Now, whether I set the combo box or the edit control in the combo box as the spinner buddy, I do not get up/down notification when the arrow keys are pressed in the combo box. Is there any way to prevent the default arrow key handling of the combo box?

-Thomas

modified 29-Aug-18 21:01pm.

Re: Combo box + spin control

alex.barylski24-Oct-02 13:08

alex.barylski

24-Oct-02 13:08

I'm not sure I totally understand, but i'm thinking your gonna have to subclass the drop down list box and respond to WM_VSCROLL by forwarding it to the parent window and not letting default processing continue...

In my priority combobox control I subclass the listbox control, so you may wanna look at the code I borrowed from another author (whose name I can't remember). Anyways...it works and the code is straight forward...

Cheers! Smile | :)

"An expert is someone who has made all the mistakes in his or her field" - Niels Bohr

Re: Combo box + spin control

User 988524-Oct-02 13:58

User 9885

24-Oct-02 13:58

The idea is that, there is a combo box that displays numbers, say 10, 20, 30.
Now, I want a spin control that has an inc/dec value of 1. So, if I press up arrow and the selected value was 10, it should become 11, 12 and so on...

But, if I click on the combo box drop down it should show only 10, 20 and 30.

Now, trying to implement this, I added a spin button control and made the combo box its buddy. But, the up/down arrow moves only between 10, 20 and 30, but using the mouse on the spin control, I can go to 11, 12 etc.

So, what I want to do is to prevent the combo box from handling up/down arrows - and allow the spin button control to get them.

I will look into the code that you mentioned.

Note:- I was secretly hoping for some combo box style, that would prevent it from handling arrow keys Big Grin | :-D

. Not so lucky I guess.

Thomas

modified 29-Aug-18 21:01pm.

Re: Combo box + spin control

alex.barylski24-Oct-02 14:42

alex.barylski

24-Oct-02 14:42

Your gonna have to subclass...I see no other way of doing it...

"An expert is someone who has made all the mistakes in his or her field" - Niels Bohr

DirectMusic8: What is MUSIC_TIME?

acozz24-Oct-02 7:41

acozz

24-Oct-02 7:41

A lot of DirectMusic8 functions ask for MUSIC_TIME arguments. What is MUSIC_TIME? The SDK Help doesn't say. What format is MUSIC_TIME in (milliseconds, seconds, etc)? Do I have to set the format? If so, how?

Thanks in advance.

Re: DirectMusic8: What is MUSIC_TIME?

fxindoor22-Feb-03 7:17

fxindoor

22-Feb-03 7:17

Music time is a 32-bit value defined as type MUSIC_TIME. It is not an absolute measure of time but is relative to the tempo. The clock is started when the performance is initialized and ticks DMUS_PPQ times for each quarter-note. DMUS_PPQ is defined as 768

Re: DirectMusic8: What is MUSIC_TIME?

fx-indoor22-Feb-03 7:18

fx-indoor

22-Feb-03 7:18

Edit Control for reading very large files

Yehuda24-Oct-02 6:32

Yehuda

24-Oct-02 6:32

Hi,
I need an Edit Control, which allows to read very large files in smaller
portions(not the whole file at once), and read the appropriate portion of the file depending on the Arrow or Page Up-Page Down keystrokes or Scroll Bar position. Is anyone aware of a class like this on this website or other sites?
Thanks a lot,
Yehuda.

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.