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Type: Posts; User: ephemera

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  1. Replies
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    Re: how to define a type at run time

    thx for your advice,your advice is good,but my second frame is not fixed...maybe it includes two char,three int..maybe it includes other data type... data type in the second frame was defined at run...
  2. Replies
    10
    Views
    451

    Re: how to define a type at run time

    thx...but how to define data struct at run time? The type of data wasnt defined utill at run time...it seemed that the type of data was defined at compile-time in your code
  3. Replies
    10
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    451

    Re: how to define a type at run time

    thanks for your advice,could you give me some articles or sample codes about your idea? Are there any cool links or forums about design pattern?I just know something about design pattern...but I am...
  4. Replies
    10
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    451

    how to define a type at run time

    Hi,guys,

    there are two data frames,the first gives the defining data of the second,so I thought it would define data type in the second frame according to the first frame at run time?
    how can I...
  5. Thread: R tree

    by ephemera
    Replies
    2
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    8,490

    Re: R tree

    good site for rtree:http://www.rtreeportal.org/
    there are some codes...
  6. Replies
    1
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    259

    an link problem

    hi guys,
    anyone knows how to link an obj file which come from another workspace?...I wanna call an fuction in that obj file....
    thanks
  7. Replies
    6
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    699

    what is top size of memory-mapped file?

    Hi,guys...
    I had sucessfully used memory-mapped file on small file many times...but yesterday when i used it on 729M file,it failed...the code is following...what should i do to corret the...
  8. Thread: memory leak

    by ephemera
    Replies
    11
    Views
    1,039

    Re: memory leak

    I used code in other place of same program such the same mode as the old code that had memory leak,but that code is ok.but the difference is that the class like VolRec has not copiable function and...
  9. Thread: memory leak

    by ephemera
    Replies
    11
    Views
    1,039

    Re: memory leak

    thax Paul McKenzie....sorry , my lines dont rightly express my meaning for the sake of my poor english:) the new program has not memory leak.
    I wanna know why the old one had memory leak?I traced...
  10. Thread: memory leak

    by ephemera
    Replies
    11
    Views
    1,039

    Re: memory leak

    thanks all guys replied this thread.
    I have changed my code using the char[256] or WCHAR[256] for resovling...
    I tried using vector<char > or vector <WCHAR> but the character is not right.
    btw.I...
  11. Thread: memory leak

    by ephemera
    Replies
    11
    Views
    1,039

    memory leak

    hi,guys,
    i has been puzzled with the following problem about memory leak in VC++6.anyone knows what results in the problem? thaz in advance.
    .h file

    class VolRec
    {
    public:
    ...
  12. Replies
    1
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    490

    anyone know about detecting the heap? how can i...

    anyone know about detecting the heap?
    how can i monitor allocation of the heap?
    I use class1* p = new class1; Is it allocated on the default heap or other heap?
    what do the following output of...
  13. Thread: about LNK2005

    by ephemera
    Replies
    2
    Views
    1,171

    i use the linker option /FORCE:MULTIPLE,but i...

    i use the linker option /FORCE:MULTIPLE,but i dont know if there is obscure problem.
    thanks for ur advises.
  14. Replies
    1
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    490

    CObArray with VC.net

    Hi guys,

    my program meet a memory problem when I used the CObArray.
    the code follows,
    Class A{
    ...
    CObArray m_ar;
    }
  15. Thread: about LNK2005

    by ephemera
    Replies
    2
    Views
    1,171

    about LNK2005

    hi,guys
    I meet LNK2005 when I link the program from VC6 to VC.net.
    the error follows:
    Searching G:\Program Files\Microsoft Visual Studio .NET\Vc7\lib\libcimtd.lib:
    libcimtd.lib(ifstream.obj) :...
  16. Replies
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    7,543

    yes .it is okay.thanks:):) :thumb: :thumb: :thumb:

    yes .it is okay.thanks:):) :thumb: :thumb: :thumb:
  17. Replies
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    7,543

    yes, I #include and using namespace std...

    yes, I #include <limits> and using namespace std and set the project option /GX,but it still failed
  18. Replies
    4
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    7,543

    about std::numeric_limits?

    hi,guys
    i used the std::numeric_limits<double>::max();,but visual C++ 6.0 reported the error C2589: '(' : illegal token on right side of '::'
    G:\MY program\temp\test1\test1.cpp(12) : error C2143:...
  19. Replies
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    Thank your reply:) How would I organize the map...

    Thank your reply:)
    How would I organize the map file in a database?
    which database would I choose?
    I recently learned something about spatial index such as KD-Tree,R-Tree R+-Tree... Should I...
  20. Replies
    7
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    495

    thx for your reply :) The map is just for...

    thx for your reply :)
    The map is just for navigation so it is only used when required.The map is not used for edit. The map is not general format such as MapInfo or ArcoInfo format.It is defined...
  21. Replies
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    495

    Thx for your reply.:) The map is vector graphics...

    Thx for your reply.:)
    The map is vector graphics which include roads ,rivers,administration regions etc. The map is divided with longitude and latitude grids.The file of the map is organized by the...
  22. Replies
    7
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    495

    :( noone know about the problem?

    :( noone know about the problem?
  23. Replies
    7
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    495

    display map on Pocket PC

    I have a city map file which is size of 1.7 M ...I wanna display the map on PocketPC whose main memory is 32M...i try to use memory-mapped file but it is slow to load the whole map.
    who guy has a...
  24. Replies
    0
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    an problem of designning view/frame

    Hi,guys,
    I am a MFC progammer...I wanna design a convenient user interface which have two sets of view/framewnd...and it always shows one of them and one set could switch to another
    How do I...
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