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At the time this code is executed, is there a selected item in the control?
"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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In debug mode(.NET), the value remains 0. Furthermore, I initialized the
value to 5 and it is being SET to 0. The final app, will allow you to select
an item and via the map, display the corresponding value in an EditBox for
modifying. I added this code to confirm that I'm getting 0 no matter what
I select.
The map is filled w/ random numbers for now.
<br />
if(((LPNMHDR)lParam)->code == NM_CLICK){<br />
int nItem = SendMessage(hList, <br />
LVM_GETNEXTITEM, <br />
-1, <br />
LVNI_SELECTED);<br />
SendMessage(hList, <br />
LVM_GETITEMTEXT, <br />
nItem, <br />
(LPARAM) &lvi);:confused:<br />
itoa(nItem,buffer,4);<br />
SetWindowText(hwndEdit,buffer);<br />
}
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When you click a button to execute this code snippet, the list control will lose focus, and perhaps deselect any items that had been selected. Does the control have the LVS_SHOWSELALWAYS style?
What does this return:
int nCount = SendMessage(hList, LVM_GETSELECTEDCOUNT, 0, 0); Remember that items in the control are 0-based.
"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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Getting back 0 from LVM_GETNEXTITEM is a valid return, not an error return; -1 is an error return (or "not items found"). Getting back 0 indicates that the first (zero-ith) item in the control is selected.
Calling SendMessage again with the same parameters will return zero again because you are still specifying -1 for the "start" of the search.
Peace!
-=- James
If you think it costs a lot to do it right, just wait until you find out how much it costs to do it wrong!
Avoid driving a vehicle taller than you and remember that Professional Driver on Closed Course does not mean your Dumb Ass on a Public Road!
DeleteFXPFiles & CheckFavorites (Please rate this post!)
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A bit more code:
<br />
case WM_INITDIALOG:{<br />
HWND hList=GetDlgItem(hwnd,IDC_LIST2);<br />
SendMessage(hList,<br />
LVM_SETEXTENDEDLISTVIEWSTYLE,<br />
0,<br />
LVS_EX_FULLROWSELECT | LVS_SHOWSELALWAYS); <br />
Well David, I tried this snippet and a big fat 0.  I initialized it to 500.
<br />
nCount = SendMessage(hList, LVM_GETSELECTEDCOUNT, 0, 0);<br />
itoa(nCount,buffer,10);<br />
SetWindowText(hwndEdit,buffer);<br />
James, my understanding is the above "SendMessage" will return the index
of the item selected. I'm selecting in the middle of my 75 item list.
Shouldn't it return a value the same as "GETCURSEL" does for a listbox???
This was so easy with a regular ListBox.(ughhhh)
I'm probably gonna be beating my head against the wall once the solution is
discovered. Something simple I'm sure...
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What are they? Any good tutorial about it?
Regards [[]]
hint_54
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I am super stuck and very frustrated. I have a simple date time control.
If I put in a date from 1970 on, everything works fine. If I put in a
date that is less than or includes 1969, the program crashes at the bottom
on the ASSERT line which is the last line of this code:
CTime::CTime(int nYear, int nMonth, int nDay, int nHour, int nMin, int nSec,
int nDST)
{
struct tm atm;
atm.tm_sec = nSec;
atm.tm_min = nMin;
atm.tm_hour = nHour;
ASSERT(nDay >= 1 && nDay <= 31);
atm.tm_mday = nDay;
ASSERT(nMonth >= 1 && nMonth <= 12);
atm.tm_mon = nMonth - 1; // tm_mon is 0 based
ASSERT(nYear >= 1900);
atm.tm_year = nYear - 1900; // tm_year is 1900 based
atm.tm_isdst = nDST;
m_time = mktime(&atm);
ASSERT(m_time != -1); // indicates an illegal input time
}
Looking at the call stack, the input is:
CTime::CTime(int 1960, int 6, int 3, int 0, int 0, int 0, int -1)
I tried changing the nDST to 0 or 1 and that doesnt stop the error from
coming.
Any ideas? Any chance I can email someone a small sample project that
keeps displaying this error?
Please, any response any one can give me will be greatly appreciated.
Sincerely,
Danielle Brina (an overworked graduate student)
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DanYELL wrote: If I put in a
date that is less than or includes 1969, the program crashes at the bottom
on the ASSERT...
A crash is vastly different than an assertion. You canot use a value any earlier than midnight, January 1970.
"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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Its an assertion error in the timecore.cpp file (line 40). I did
alittle more research on the web and found:
// If timeptr references a date before midnight,
// January 1, 1970, or if the calendar time cannot be
// represented, mktime returns –1 cast to type time_t.
I cant believe I cant use a value earlier than 1970. Isnt there a
work around somehow? Im trying to prompt for the persons date of
birth which in this case is in the 1960's. Is there any way to use
a date before 1970?
Please, any response any one can give me will be greatly appreciated.
Sincerely,
Danielle Brina (an overworked graduate student)
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Use COleDateTime instead of CTime.
"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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Wow! It worked. I dont know what I was thinking of using
CTime.
Thank you very much for you responses.
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time_t can't represent dates before midnight Jan 1 1970 because that is the date where time_t starts counting from. As the other replies said, you'll need to use a time type that doesn't have that restriction.
--Mike--
Visual C++ MVP 
LINKS~! Ericahist | NEW!! PimpFish | CP SearchBar v3.0 | C++ Forum FAQ
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Michael Dunn wrote: time_t can't represent dates before midnight Jan 1 1970
And it cannot represent time after January 19 2038. This is where time_t reaches it's max limit.
Nibu thomas
Software Developer
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CALL <JMP.&DllDemo.ExpFun><br />
PUSH 0<br />
MOV DWORD PTR DS:[40997C],EAX<br />
MOV ECX,DWORD PTR DS:[EAX]<br />
PUSH 0<br />
PUSH 0<br />
PUSH 0<br />
CALL DWORD PTR DS:[ECX+4]<br />
ADD ESP,10
int ExpFun()
{
return 0;
}
int fun1(...)
{
...
}
how to write the fun1 declare and the ExpFun return value? the return value will confirm fun1 address (CALL DWORD PTR DS:[ECX+4] -> call fun1)
thanks. ![Rose | [Rose]](https://www.codeproject.com/script/Forums/Images/rose.gif)
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I do not see it at the top anymore...?
Peace!
-=- James
If you think it costs a lot to do it right, just wait until you find out how much it costs to do it wrong!
Avoid driving a vehicle taller than you and remember that Professional Driver on Closed Course does not mean your Dumb Ass on a Public Road!
DeleteFXPFiles & CheckFavorites (Please rate this post!)
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James R. Twine wrote: I do not see it at the top anymore...?
Peace!
Change your "Messages since" option appropriately. I think there was a server reset or something, because for me, it went back to "Last month's posts" for all the forums.
Regards,
Nish
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It is appearing now - I have changed nothing! 
Peace!
-=- James
If you think it costs a lot to do it right, just wait until you find out how much it costs to do it wrong!
Avoid driving a vehicle taller than you and remember that Professional Driver on Closed Course does not mean your Dumb Ass on a Public Road!
DeleteFXPFiles & CheckFavorites (Please rate this post!)
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For me, it only appears after I have posted something.
"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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what is private & static function in MFC.
how it can be used in Visual C++.
what i need to do if i want to used the same filename in every block of programming like:
CMyPsmDlg::OnButtonBrowse()
{
//i get a filename using GetFileName()
}
CMyPsmDlg::OnButtonEncrypt()
{
//i want to use the same filename in above blok of function
}
HelpMe
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private and static are C++ concepts, and nothing to do with MFC per se. You need to get a good C++ book and figure out some of this basic stuff before working with MFC. The following URL is a good place to begin : http://www.parashift.com/c++-faq-lite/[^]
Regards,
Nish
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whenever Nish is right saying you should learn C++ first, i'll give it a go, so that every one can share.
as you certainly know, private members can be used from within the class only. private data members can be used only by member functions of the class, and private member functions can be called only by other member functions of the same class.
static only means that the function don't get the implicit this pointer parameter which is caracteristic of the non-static member functions. a static member function can only access static data members so, because they are not proper to an object but shared commonly by all the instances of the class. this have nothing to do with the scope, and nothing forbids a private member function to be static.
it will be able to be called only by member functions (as it is private), and will access only static data members (because of its static state).
don't make the confusion anyway, MFC is not a specific language. everything done inside MFC is pure C++. MFC simply provides some classes and functionnalities to ease Windows programming.
hope this helps...
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In the header file for your dialog class, declare a member variable of type CString to save the filename:
class CMyPsmDlg : public CDialog {
CString FileName;
};
void CMyPsmDlg::OnButtonBrowse()
{
FileName = GetFileName();
}
void CMyPsmDlg::OnButtonEncrypt()
{
}
Software Zen: delete this;
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what made you compare private and static functions?
private , protected and public are access specifiers. and on the other hand when a function is said static , it is STATIC, in the sense, its not intialized a new when New objects are created. but no matter it is private, public or protected, a new instance of those functions are created for the Object. static functions remain same no matter who calls it. it's acessed by :: instead of a . or ->
VuNic
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Hi,....
How do we add HOTKEY to an application runing in the system tray..the application is written in SDK....The application is "Magnifying Glass " by
"Alex Fr "....I want to use this application...and i want to add HOTKEY to this application so that i can activate the Application by HOTKEY instead of MouseClick.Please help me thank q.............
James Rocky.
-- modified at 11:08 Tuesday 7th March, 2006
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