Re: Only one thread accessing the CList object - C / C++ / MFC Discussion Boards

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Re: Out of Memory error

Stew10-Jun-02 3:32

Stew

10-Jun-02 3:32

Thank you! Thank you! Thank you!

Re: Out of Memory error

Tim Smith11-Jun-02 1:59

Tim Smith

11-Jun-02 1:59

I guess that got it Smile | :)

Tim Smith

I know what you're thinking punk, you're thinking did he spell check this document? Well, to tell you the truth I kinda forgot myself in all this excitement. But being this here's CodeProject, the most powerful forums in the world and would blow your head clean off, you've got to ask yourself one question, Do I feel lucky? Well do ya punk?

Only one thread accessing the CList object

Rsh10-Jun-02 2:56

Rsh

10-Jun-02 2:56

I want a sample program to create two threads & only one thread access the CList object at a time. that is, one thread uses some(i don't know which) synchronization object to lock the CList object & writes to it and then releases the CList object. Next another thread does the same process, but instead of writing, it reads from the CList.
can anybody help?

Rsh

Re: Only one thread accessing the CList object

Andres Manggini10-Jun-02 4:32

Andres Manggini

10-Jun-02 4:32

I'm sorry but time is not my friend right now to make an example, but you can start searching for this on MSDN: CMutex or CCriticalSection.

Hope this helps.

PS: if you have installed the MSDN Help from Visual Studio.NET then use this address:
ms-help://MS.VSCC/MS.MSDNVS/vccore/html/_core_Multithreading.3a_.How_to_Use_the_Synchronization_Classes.htm

Andres Manggini.
Buenos Aires - Argentina.

Re: Only one thread accessing the CList object

Alexandru Savescu10-Jun-02 5:08

Alexandru Savescu

10-Jun-02 5:08

You should use something like this:

CCriticalSection cs; // this object must be global of static in your class

// then in the function that access the CList
void CMyClass::FunctionThatAccessTheCList ()
{
  // lock this section, begins the synchronized section
  cs.Lock ();
  //.... modify the list here

  cs.Unlock ();
  // end synchronized section
}

Best regards,
Alexandru Savescu

Re: Only one thread accessing the CList object

Rsh10-Jun-02 19:33

Rsh

10-Jun-02 19:33

Pretyy cool one
Thanx Alexandru

Rsh

Re: Only one thread accessing the CList object

Joaquín M López Muñoz10-Jun-02 5:19

Joaquín M López Muñoz

10-Jun-02 5:19

This post of mine explains a convenient approach to synchronizing access to a data structure.

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

Re: Only one thread accessing the CList object

Rsh10-Jun-02 19:30

Rsh

10-Jun-02 19:30

Thank u Joaquín

This made my life more easier
Smile | :)

Rsh

Is there any limits to how long a PATH+FILENAME can be?

redeemer10-Jun-02 2:46

redeemer

10-Jun-02 2:46

Is that MAX_PATH*2+1 ?

Re: Is there any limits to how long a PATH+FILENAME can be?

Navin10-Jun-02 2:58

Navin

10-Jun-02 2:58

I always thought the whole thing's max length would be MAX_PATH (plus 1 for the terminating NULL)? But this is only true on 9X systems - I think there are ways of getting Windows NT-based systems to have UNICODE paths much longer than MAX_PATH.

But since I never compile in Unicode, I always just use MAX_PATH + 1 and hope for the best. Smile | :)

No generalization is 100% true.
Not even this one.

draw icon on desktop

slah10-Jun-02 2:38

slah

10-Jun-02 2:38

i want to add icons on desktop programatically, if someone having idea how to add them. plz do share knowledge

Re: draw icon on desktop

Andres Manggini10-Jun-02 4:27

Andres Manggini

10-Jun-02 4:27

Search for "Shell Links" on MSDN, or for this interface: "IShellLink".
Sorry, I have no samples.

Hope this helps.

Andres Manggini.
Buenos Aires - Argentina.

Moving the Cursor in ComboBox

10-Jun-02 2:29

I am trying to reposition the Cursor inside of the Edit Box in a ComboBox in my Application. I've tried SetCaretPos, but it doesn't seem to affect the ComboBox Control.

What I'm doing is trying to get an autocompleting ComboBo that Set the Cursor to the Beginning of the Selected string that holds the completed text instead of the end. Right now when I auto complete the text the control scrolls to the end of the text and so you can no longer see what you are typing.

Re: Moving the Cursor in ComboBox

C^hris L^osinger10-Jun-02 3:07

C^hris L^osinger

10-Jun-02 3:07

CEdit * pMyEdit = (CEdit *)m_myCombo.GetDlgItem(1001);

this will get the CEdit part of the combo box. you can do the SetCaretPos on that.

-c

Cheap oil. It's worth it!

ISEffects - effects for images

Re: Moving the Cursor in ComboBox

10-Jun-02 4:26

I've tried that or at least something simillar. I have the Edit Box subclassed. I put this code inside of the OnEditChange of my ComboBox
class and the Cursor never Budges from the end of the string.

CEdit* lpEdit = static_cast<cedit*>(GetDlgItem(1001));

lpEdit->SetCaretPos(CPoint(0,0));

Re: Moving the Cursor in ComboBox

Rick Crone13-Jun-02 10:40

Rick Crone

13-Jun-02 10:40

How do you know that it is 1001?

Re: Moving the Cursor in ComboBox

C^hris L^osinger13-Jun-02 11:40

C^hris L^osinger

13-Jun-02 11:40

i don't know, it just is... Smile | :)

-c

Cheap Oil. It's worth it!

Image Processing?

How do you restore ClassView information when VC++ has crashed?

redeemer10-Jun-02 1:34

redeemer

10-Jun-02 1:34

Re: How do you restore ClassView information when VC++ has crashed?

Rama Krishna Vavilala10-Jun-02 1:41

Rama Krishna Vavilala

10-Jun-02 1:41

There is a restore classview addin available in CP. That will explain you everything. See under addins section.

Re: How do you restore ClassView information when VC++ has crashed?

redeemer10-Jun-02 2:12

redeemer

10-Jun-02 2:12

What is CP, and in what addins section?

Re: How do you restore ClassView information when VC++ has crashed?

Le centriste10-Jun-02 3:28

Le centriste

10-Jun-02 3:28

CP stands for Code Project

And he pointed you to http://www.codeproject.com/macro/restoreclassviewaddin2.asp

Michel

It is a lovely language, but it takes a very long time to say anything in it, because we do not say anything in it, unless it is worth taking a very long time to say, and to listen to.

- TreeBeard

Re: How do you restore ClassView information when VC++ has crashed?

John M. Drescher10-Jun-02 21:22

John M. Drescher

10-Jun-02 21:22

I would caution using that version and use http://www.codeproject.com/macro/restoreclassviewaddin.asp instead. I tried the new version and it totally messed up (lost) my class view. Frown | :(

Also you must do this to save the classview before VC++ has crashed if it has already lost your classview their is no way to recover it.

John

Calling DllMain after the DLL is loaded

10-Jun-02 1:22

I'm trying to call the DllMain funcion explicitly after the DLL is already loaded. I have an handle to the DLL but I have no idea how can I get the DLL function from it.
Thanx
Didi Gurfinkel

Re: Calling DllMain after the DLL is loaded

Rama Krishna Vavilala10-Jun-02 1:43

Rama Krishna Vavilala

10-Jun-02 1:43

Why do you need to do that? I think a simpler idea would be to export another function which does what you do in DllMain. You can call that explicitly and also from DllMain. You can export DllMain too but it will be nice to keep the sanctity of the function.

Re: Calling DllMain after the DLL is loaded

10-Jun-02 5:01

I need it for backward compatibility issue.
Confused | :confused:

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