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I don't know if this is related to your checkboxe problem...
From the docs:
"If you want to use the checkbox style, you must set the TVS_CHECKBOXES style (with
SetWindowLong) after you create the tree-view control and before you populate the tree.
Otherwise, the checkboxes might appear unchecked, depending on timing issues."
"Great job, team. Head back to base for debriefing and cocktails."
(Spottswoode "Team America")
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If you do not want to use the boost libraries as suggested you can create simple trim functions using the find_first_not_of(), find_last_not_of() and substr() functions.
std::tstring::size_type trim_left(std::tstring &string, const std::tstring &chars = _T(" \t"))
{
std::tstring::size_type pos = string.find_first_not_of(chars);
if (pos != std::tstring::npos)
{
string = string.substr(pos);
}
return string.length();
}
std::tstring::size_type trim_right(std::tstring &string, const std::tstring &chars = _T(" \t"))
{
std::tstring::size_type pos = string.find_last_not_of(chars);
if (pos != std::tstring::npos)
{
string = string.substr(0, pos + 1);
}
return string.length();
}
std::tstring::size_type trim(std::tstring &string, const std::tstring &chars = _T(" \t"))
{
trim_left(string, chars);
return trim_right(string, chars);
}
You may be right
I may be crazy
-- Billy Joel --
Within you lies the power for good, use it!!!
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I've tried this for quite a while, still clueless. 
I used WNetOpenEnum and WNetEnumResource to obtain the IP address of other PC connected to my neighborhood. Now I want to know the subnet mask settings and gateway settings of them. What functions to use?
I know structure INTERFACE_INFO contains field iiNetmask, which is the network mask, but which function can give me this structure as an output?
thank you very much for the help!
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Hello Friends
Can someone please help me with a question regarding the SDK
Now Microsoft has comeup with a new SDK
a) If i compile any sample application , will it work on old OS (eg Win 98 , etc)
b) How i can find out what files need to be redistributed & where to find them?
Regards
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a) Not necessarily. If the sample app is demonstrating APIs that became available on Windows 2000
then it's probably not going to run on Windows 3.1.
b) Deployment (C++)[^]
"Great job, team. Head back to base for debriefing and cocktails."
(Spottswoode "Team America")
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Hi,
I have data coming at a really fast rate 200 times a second. I have a consumer which runs slower then the producer, and I need to have the ability to keep the data being copied off for a long period of time, namely like for 3 to 4 hours. Now the way that it is going now I have this circular queue, but because the consumer runs slower, the producer overlaps it and I lose data and everything gets off sync. I can not lose any data, and I need to be able to write the data for 3 to 4 hours, is there any way that I can do this.
Thanks in advance
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godspeed123 wrote: is there any way that I can do this
of course, you lock the shared resource (here, your circular queue") so that only one can use it at a time (either producer, or Consumer, but not both), and release it then.
you should document yourself about semaphore, mutex, and such security locking systems...
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Thanks for the repsonse.
By doing the locking, wont you lose data? Since the producer wont be able to write the data in at the time that it is available?
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godspeed123 wrote: By doing the locking, wont you lose data?
thanksfully not !
actually, the producer (if it's the producer who wants to use the resource when it's locked) "hibernates" for a certain period, until the comsumer releases the resource.
the problem is if you don't release a locked resource... you can come into an infinite loop...
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So right now what is happeneing is I have a hardware board hooked up to the computer and it throws out data 200 times a second. In the callback of the acquisition board I take the data and copy it into the circular queue. Now the consumer consumes the data at a slower rate, my estimate is 100 times a second, so because it is consuming the data at a slower rate, there will be a time where the producer will overlap the consumer in the circular queue. When this happens and there is a semaphore on it, the data will then be locked and hence I would lose the new data coming in from the acquisition board, would I? Or am I compeltely misunderstanding this
Thanks again
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what you MUST implement however is a security which will forbid the producer to write in the queue if it's already full... it must wait for a consumer goes by there
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godspeed123 wrote: Now the way that it is going now I have this circular queue
Why a circular queue, and not a queue? Maybe even MSMQ[^]?
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With a queue I thought I would over run the memory, and then cause the whole computer to crash.
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godspeed123 wrote: With a queue I thought I would over run the memory, and then cause the whole computer to crash.
The queue does not need to store items (entirely) in the memory. Again, look at MSMQ - it stores messages in files in the MSMQ\Storage folder.
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You may also do this,
Use queue(STL,maybe) and mark the zone you push data into the queue [queue::push(msg)] using Critical section. That works, simple.
Press: 1500 to 2,200 messages in just 6 days? How's that possible sir?
Dr.Brad :Well,I just replied to everything Graus did and then argued with Negus for a bit.
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Hi,
I'm writing a MFC application with callback dll functions, but it's have the problem with the callback function and mfc. I have two callback functions: OnInviteResult and OnLoginResult are called by a function in a dll. The first function OnLoginResult works fine, but OnInviteResult make the program halt when it execute the line:
pdlg->m_status.ReplaceSel("Connected\r\n");
I have debuged and seen pdlg pointer has the same address in both OnLoginResult and OnInviteResult functions.
Below is my code:
TestDLLDlg.cpp
CTestDLLDlg* pdlg;
.....
CTestDLLDlg::CTestDLLDlg(CWnd* pParent )
: CDialog(CTestDLLDlg::IDD, pParent)
{
m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
pdlg = this;
}
......
void CALLBACK OnLoginResult(int *registered)
{
switch (*registered){
case 1:
pdlg->m_status.ReplaceSel("Registered\r\n");
break;
case 2:
pdlg->m_status.ReplaceSel("Invalid Username or Password\r\n");
break;
case 3:
pdlg->m_status.ReplaceSel("Service Unavaiable\r\n");
break;
}
}
void CALLBACK OnInviteResult(int *status)
{
switch (*status){
case 1:
pdlg->m_status.ReplaceSel("Ringing...\r\n");
break;
case 2:
pdlg->m_status.ReplaceSel("Connected\r\n");
break;
case 3:
pdlg->m_status.ReplaceSel("Hung up\r\n");
break;
default:
break;
}
}
int CTestDLLDlg::SetCallbackFunctions(void)
{
SetCallbackLogin(OnLoginResult);
SetCallbackInvite(OnInviteResult);
return 0;
}
Do you have any idea about this problem?
Any help would be appreciated.
DBQ.
-- modified at 17:31 Wednesday 21st March, 2007
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Van Ly Doc Hanh wrote: but OnInviteResult make the program halt when it execute the line:
pdlg->m_status.ReplaceSel("Connected\r\n");
Which doesn't tell us a whole lot. Have you set a breakpoint on that statement and debugged into it?
"Approved Workmen Are Not Ashamed" - 2 Timothy 2:15
"Judge not by the eye but by the heart." - Native American Proverb
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I did set the break point on that statement and when I press F10 for that line, it run for a long time and my app become "Not Responding".
DBQ.
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Van Ly Doc Hanh wrote: ...when I press F10 for that line...
I said step into, not over.
"Approved Workmen Are Not Ashamed" - 2 Timothy 2:15
"Judge not by the eye but by the heart." - Native American Proverb
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I'm sorry. I misunderstood your words.
When I hit F11, it pop up a windows:
"Finding source: afxwin2.inl"
f:\vs70builds\3077\vc\mfcatl\ship\atlmfc\include\afxwin2.inl
I tried to step into and it looks like:
Dialog changes the text in CEdit control and send message to Window but there is no control takes that message -> program waiting forever.
How can I solve this problem?
DBQ.
-- modified at 17:27 Wednesday 21st March, 2007
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Press "Shift" + F11 rather than F11.
Press: 1500 to 2,200 messages in just 6 days? How's that possible sir?
Dr.Brad :Well,I just replied to everything Graus did and then argued with Negus for a bit.
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Van Ly Doc Hanh wrote: I did set the break point on that statement and when I press F10 for that line, it run for a long time and my app become "Not Responding".
Use F11 for step into and check the behavior
Knock out 't' from can't,
You can if you think you can
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Hello together,
I need some help for my dialog box.
I search an entry for my message map of one dialog box. This entry shall call a function if the dialog box is completly shown on the screen.
The most entries like ON_WM_CREATE or ON_WM_ACTIVATE are called the functions before the dialog box is completely shown on the screen.
Kind regards
GruenerSchreibtisch
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