How to Copy static array to dynamic array - C / C++ / MFC Discussion Boards

Re: MFC usage

Richard MacCutchan5-Oct-11 4:42

Richard MacCutchan

5-Oct-11 4:42

Do you really need to use bold text for a simple list of links?

Unrequited desire is character building. OriginalGriff

Re: MFC usage

Software_Developer5-Oct-11 5:13

Software_Developer

5-Oct-11 5:13

LOL.. i like to be dramatic. Just to put a little empasis on topics Cool | :cool:

C++ Providers

rupeshkp7285-Oct-11 1:36

rupeshkp728

5-Oct-11 1:36

I am new into writing C++ providers.
Can anyoone let me know the basics of provider writing.
I mean I wanted to know about Provider types(Instance, Method, Indication) and why are they needed etc
What are properties, mof, cim, schema etc.

Re: C++ Providers

_AnsHUMAN_ 5-Oct-11 1:52

_AnsHUMAN_

5-Oct-11 1:52

Providers are used to provide dynamic data which are not stored in internal datastore for the CIMOM .
More details[^] can be found in the link.
Also if you could google with "C++ provider" keyword you can get more results and channels to start.

You talk about Being HUMAN. I have it in my name
AnsHUMAN

Re: C++ Providers

rupeshkp7285-Oct-11 1:59

rupeshkp728

5-Oct-11 1:59

Thanks Anshuman I will have a look at the link.

Re: C++ Providers

Software_Developer5-Oct-11 3:31

Software_Developer

5-Oct-11 3:31

Visual C++ 6.0 OLE DB Provider Templates
http://msdn.microsoft.com/en-us/library/aa260857(v=vs.60).aspx[^]

Provider Model: Introduction to the Provider Model
http://msdn.microsoft.com/en-us/library/Aa479030[^]

Re: C++ Providers

rupeshkp7285-Oct-11 4:39

rupeshkp728

5-Oct-11 4:39

Thanks Topcoder for the links

How to Copy static array to dynamic array

002comp4-Oct-11 23:34

002comp

4-Oct-11 23:34

Hello Friends
I want to copy an array of Point3 object to Dynamic Array object of Point3.

I am having Point3 verts[1000],which stores point3 for some size ,say 600.

i want to copy to another Point3 object with size of 600.
Like, Point3* tempVerts = new Point3[600]

Thanks In Advance.
Regards
Yogesh

Re: How to Copy static array to dynamic array

_AnsHUMAN_ 5-Oct-11 1:19

_AnsHUMAN_

5-Oct-11 1:19

tempVerts[i] = verts[i]; // i would be a variable incremented each time by 1 in a loop
BTW can you use a vector<point3> rather than allocating an array dynamically if it fits your design?

You talk about Being HUMAN. I have it in my name
AnsHUMAN

Re: How to Copy static array to dynamic array

Code-o-mat5-Oct-11 2:39

Code-o-mat

5-Oct-11 2:39

How'bout:

Point3* tempVerts = new Point3[600];
memcpy(tempVerts, verts, sizeof(Point3)*600);

> The problem with computers is that they do what you tell them to do and not what you want them to do. <
> If it doesn't matter, it's antimatter.<

Re: How to Copy static array to dynamic array

Albert Holguin5-Oct-11 2:57

Albert Holguin

5-Oct-11 2:57

Correct (+5)... but if it's dynamic then it would be more like (to clarify for OP)...

Point3* tempVerts = new Point3[array_size];
memcpy(tempVerts, verts, sizeof(Point3)*array_size);

//don't forget to delete from heap

Re: How to Copy static array to dynamic array

Code-o-mat5-Oct-11 3:13

Code-o-mat

5-Oct-11 3:13

Also correct (+5). Smile | :)

> The problem with computers is that they do what you tell them to do and not what you want them to do. <
> If it doesn't matter, it's antimatter.<

Re: How to Copy static array to dynamic array

Albert Holguin5-Oct-11 3:33

Albert Holguin

5-Oct-11 3:33

thanks

Re: How to Copy static array to dynamic array

Stephen Hewitt5-Oct-11 5:08

Stephen Hewitt

5-Oct-11 5:08

There's a caveat to this: the data must be blittable.

Steve

Re: How to Copy static array to dynamic array

Code-o-mat5-Oct-11 5:14

Code-o-mat

5-Oct-11 5:14

You are right, i simply assumed that Point3 is made up of simple types like 3 coordinates stored as floats or integers, but of course this might not be the case.

> The problem with computers is that they do what you tell them to do and not what you want them to do. <
> If it doesn't matter, it's antimatter.<

Re: How to Copy static array to dynamic array

«_Superman_»5-Oct-11 4:55

«_Superman_»

5-Oct-11 4:55

The C++ way to do this would be

copy(verts, verts + 600, tempVerts);

For this you have to add the following lines first -

#include <algorithm>
using namespace std;

You will get a warning which you can avoid by using checked_array_iterator class.

«_Superman_»
I love work. It gives me something to do between weekends.

Microsoft MVP (Visual C++)

Polymorphism in C

Re: How to Copy static array to dynamic array

002comp6-Oct-11 17:53

002comp

6-Oct-11 17:53

Thanks Everyone For Reply.

Regards
Yogesh

Check if an document is already open

_Flaviu4-Oct-11 21:01

_Flaviu

4-Oct-11 21:01

Hi all. I have an MDI application that have more then 2 kind of documents : CMy1Doc, CMy2Doc, CMy3Doc, etc. How can I know for sure if an document is already open, if yes then I bring it to foreground, if not then open it ? Thank you.

Re: Check if an document is already open

Richard MacCutchan4-Oct-11 21:41

Richard MacCutchan

4-Oct-11 21:41

You would normally open your documents as a result of user action: button click, menu selection etc. So your program does not need to know whether the document is loaded, it just displays the content in the child window which the user then moves to front or back or tiled as required. Unless of course, your design is totally different from the Windows model. You might also like to consider using more meaningful names for your documents.

Unrequited desire is character building. OriginalGriff

Re: Check if an document is already open

Software_Developer4-Oct-11 23:20

Software_Developer

4-Oct-11 23:20

Try and open it with CreateFile[^], specifying 0 (no sharing) for the dwShareMode parameter. If the file is already open, CreateFile will return INVALID_HANDLE_VALUE and GetLastError will return ERROR_SHARING_VIOLATION.

The code below will fail, printing the value of ERROR_SHARING_VIOLATION if the file a.a is already open.

HANDLE f = CreateFile("a.a", GENERIC_READ|GENERIC_WRITE, 0, 0, OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, 0);
   if (f == INVALID_HANDLE_VALUE)
   {
      std::cout << GetLastError() << std::endl;
      return 0;
   }

source: http://www.codeproject.com/Messages/3046449/Re-Check-file-is-open-or-not.aspx[^]

Re: Check if an document is already open

_Flaviu4-Oct-11 23:35

_Flaviu

4-Oct-11 23:35

I forget to tell you that I will not serialize the documents ... In CMy1Doc I spread a CScrollView, in CMy2Doc I spread a CFormView, and in CMy3Doc I spread a CListView. So, in my application I want to open just once scroll view, form view, list view ... as I said, if one specific view is not open I need open it, if is already open then just bring it to front ...
(CMy1Doc, CMy2Doc and CMy3Doc is just sample names).

Re: Check if an document is already open

App_4-Oct-11 23:32

App_

4-Oct-11 23:32