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well, you should check then (either using debugging mode or printing some output traces) if the handle you are referencing is a valid one or the fd_set structure is valid.
that is my advise...
hope it helps
Yaron
Ask not what your application can do for you,
Ask what you can do for your application
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Hello everyone,
I am looking for tutorials dealing with static linking and dynamic linking in VS.net 2003. Does anyone have any recommendations?
regards,
George
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v2.0,
Thank you very much! I will read through these valuable materials.
regards,
George
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George_George wrote: I am looking for tutorials dealing with static linking and dynamic linking...
Static, or implicit, linking, requires a .h file, a .lib file, and a .dll file. Dynamic, or explicit, linking, requires you to call LoadLibrary(), GetProcAddress(), and FreeLibrary().
"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain
"There is no death, only a change of worlds." - Native American Proverb
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Hi DavidCrow,
I think we have three methods of using the functions of another library -- static linking, dynamic linking and dynamic loading. I think your method using LoadLibrary(), GetProcAddress(), and FreeLibrary() are dealing with dynamic loading -- not dynamic linking.
regards,
George
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Hi
I am trying to make thread in a dialog based application. I have made the thread callback function, as static member function of that dialog class. Now if i want to use UpdateData(false) in that thread, I can not do that as UpdateData(false) is a non-static member function. What should I do now? Please can any one help me.
Thank you
We Believe in Excellence
www.aqueelmirza.cjb.net
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Normally I would have a thread function as a public member function of the class. As you can't do this explicitly (the thread function must be global) I do so implicitly: Have the global thread function do nothing but call the public function on the dialog class that does all the work. You'll have to pass the this pointer when you start the thread.
Steve
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Thank you Stephen. I have made that thread function global. Now problem is that i am trying to initiate the thread from another class and that. To do this i declared this callback function in the cpp file of that class as
extern UINT myThread(LPVOID pParam);
But when i use AfxBeginThread to initiate the thread, it gives the following error.
AfxBeginThread' : none of the 2 overloads can convert parameter 1 from type 'int (__cdecl *)(void *)'
Why i am getting this error? Please help me.
We Believe in Excellence
www.aqueelmirza.cjb.net
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Can you show the source for:
- The call to AfxBeginThread.
- The function beging called.
Steve
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OK i have declared and defined a thread function in a file cwait.cpp.
Now in CMyDlg.cpp, to initiate that thread function, I first declare that function like that
extern countTime(LPVOID pParam);
Now in the same file I initiate the thread like this
CWinThread* cTime = AfxBeginThread(countTime, NULL);
It is important that i am initiating the thread within a member function of CMyDlg
Thank you. Waiting for kind responce...
We Believe in Excellence
www.aqueelmirza.cjb.net
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Here's an outline of how to execute a member fuction of a class instance using a new thread:
-------------
// In a header file.
class CMyClass
{
public:
void StartThread();
private:
UINT ThreadFn();
static UINT __cdecl RawMyControllingFunction( LPVOID pParam );
};
// In a .CPP file.
void CMyClass::StartThread()
{
AfxBeginThread(&CMyClass::RawMyControllingFunction, this);
}
UINT CMyClass::ThreadFn()
{
// Do stuff here.
return 0;
}
/*static*/
UINT __cdecl CMyClass::RawMyControllingFunction( LPVOID pParam )
{
CMyClass *pThis = static_cast<CMyClass*>(pParam);
return pThis->ThreadFn();
}
Steve
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Aqueel wrote: Now if i want to use UpdateData(false) in that thread...
Which you should never do as the secondary thread does not own any of the UI components. See here on how secondary threads communicate with the primary thread.
"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain
"There is no death, only a change of worlds." - Native American Proverb
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hi all,
I want to display the Networking systems that are displayed in the Tree Control and their files in the ListControl. it must be just as the Explorer of Windows 95. How can we achieve to retrieve the Remote Computers in the LAN WorkGroup that has to Dispaly all the Computers and their Files Associtated.
any api's for this other than FindFirstFile(...) and FindNextFile(...) for the Local Computer Files to be Displayed in the ListControl.
please hlp me out..
thanks,
uday.
uday kiran
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hi,
this are all described only for the Local Computers Drives but what abt the Remoter Computers appended to the Tree Control and there Disks and Drives i am confused that how to append the remoter computers.
because when you open the Window Explorer apart from the Local Computer there is a hook for Remoter Computer where all the Remote Computer and there Drives are Mentioned which is the Required Form i want.
pls let me know.
thanks,
uday.
uday kiran
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Ok, i think your problem is different.
I thought all you wanted is to combine a tree and list together into one control.
Now i see you don't know how to read Remote computers, and to place them in the tree same as in disk drivers....
well for that there are good examples here is code project, all you have to do is search.
try to search for how to retrieve directories
hope this helps
Yaron
Ask not what your application can do for you,
Ask what you can do for your application
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Hi,
I want to stop drop down of combobox if it doesn't contain any item. I check wheather combo box is empty or not in OnDropDown() function of combobox. I want that If combo box doesn't contain any item then should not drop down.........As the empty combox drop down without showing any item it doesn't looks good. Can any one help me out?
Thanks
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Hi,
When you delete last item or when app starts and there isn't any item yet, you can disable combobox ... GetDlgItem( IDC_COMBOBOX1 )->EnableWindow( FALSE ).
And when you add item you can enable it: GetDlgItem( IDC_COMBOBOX1 )->EnableWindow( TRUE ); 
-----------
Mila
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Hi,
You are correct that if combobox doesn't contain any item i make it disable and enable it only if it contain item. But is their any other way to simply stop combobox from showing empty dropdown list if it not contain item.
Thanks:-
Mike
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Hi,
Try this CComboBox::ShowDropDown(false);
Bye,
Cool Ju 
Dream Ur Destiny
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Hi,
I try like this one but it didn't work. When I read MSDN help about it, it says that This member function has no effect on a combo box created with the CBS_SIMPLE style. And I thing that the combobox created using toolbox has CBS_SIMPLE style. So what to do?
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hey, is it that difficult ? 
you have one line of code, what do you want else 
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Hi,
It didn't work. As This ShowDropDown function has no effect on a combo box created with the CBS_SIMPLE style.And combobox created by dragging from toolbox hasof CBS_SIMPLE style. Any solution for this?
Thanks
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MikeRT wrote: But is their any other way...
Why would you want/need one? Mila025 has provided you with a very clean, simple solution. There's no need to bother with any of the dropdown-related stuff.
"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain
"There is no death, only a change of worlds." - Native American Proverb
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