Re: I’m trying to figure out a way to store my data in an clever way - C / C++ / MFC Discussion Boards

Re: How to capure mouse move with child window overlapping ?

John R. Shaw8-Jul-05 17:30

8-Jul-05 17:30

I don't know if this will help. But in this entire thread, no one mentioned that a control is another window and only the window over which the mouse is moving gets the WM_MOUSEMOVE messages (not its parents).

You don't want to capture the mouse in your main window, because then your child windows will not receive mouse message (they will all go to your main window).

If you need to keep track of the cursor position, even when the mouse cursor is over a child window. Then you should start a timer in you main window (in this case your dialog window) and call GetCursorPos to get the screen coordinates of the cursor. Then there is an API function some where (I forgot the name of it), that can be used to get the handle of a window given the screen coordinates, that you need to call to determine which window you are over. If you need to display the coordinates, then you'll probably need to convert the screen coordinates to the local client coordinates.

INTP
"The more help VB provides VB programmers, the more miserable your life as a C++ programmer becomes."
Andrew W. Troelsen

Using a "windows file manager"-like control?

Salvador Dali8-Jul-05 2:12

Salvador Dali

8-Jul-05 2:12

Hello,

I would like to embed the functionality of the windows explorer (file manager) in a win32 application (no MFC). Specifically, assuming I already have a file tree control on the left side of the window, I would like to have a control which will display files and directories on the right, much like explorer does, with different view options (list, details, icons, thumbnails, etc.).

Is there a control like the Web Browser control I can embed in my app, or is it more complicated than that?

Thanks in advance.

Have no fear of perfection - You will never reach it

Re: Using a "windows file manager"-like control?

David Crow8-Jul-05 3:35

David Crow

8-Jul-05 3:35

Salvador Dali wrote:
I would like to have a control which will display files and directories on the right, much like explorer does, with different view options (list, details, icons, thumbnails, etc.).

That would be a listview (i.e., SysListView32).

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

Re: Using a "windows file manager"-like control?

Salvador Dali8-Jul-05 5:22

Salvador Dali

8-Jul-05 5:22

Umm...can you be a little bit more specific on how one would go about using this? There doesn't seem to be a lot of related documentation around, except perhaps for modifying the standard windows file open/save dialogs.

Have no fear of perfection - You will never reach it

Re: Using a "windows file manager"-like control?

David Crow8-Jul-05 5:58

David Crow

8-Jul-05 5:58

Salvador Dali wrote:

Umm...can you be a little bit more specific on how one would go about using this?

SysListView32 is the system list view control class. You create it just like you would any other...using CreateWindow(). See here for an example.

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

I’m trying to figure out a way to store my data in an clever way

t!bast8-Jul-05 2:07

t!bast

8-Jul-05 2:07

The objects to store contains a regular integer and a pointer. Each integer value is unique and received in a sequential order (the value is increased by one or more for each time).

- I want to find an object with a particular integer value as fast as possible.
- I don’t know the number of objects at load time, so I cant load all at once and use binary search.

I believe using a tree structure is not the most clever idea, since the data is in order from start.
Maybe a skip list is the best idea?.

Re: I’m trying to figure out a way to store my data in an clever way

S. Senthil Kumar8-Jul-05 6:06

S. Senthil Kumar

8-Jul-05 6:06

How about some associative data structure, like a hash table or a map? You'd get constant lookup time (average) instead of the log n lookup time you'll get with a tree.

Regards
Senthil
_____________________________
My Blog | My Articles | WinMacro

Re: I’m trying to figure out a way to store my data in an clever way

Blake V. Miller8-Jul-05 16:54

Blake V. Miller

8-Jul-05 16:54

Store where?

It seems to me that if the integer ALWAYS increases by exactly one each time, you can use binary search. Just keep redcuing the index into the list by one-half until you home in on the value. I would htink this shoudl work because our data is of constant size and you know the index value is always increasing.

communicating with the phone

mpsundar8-Jul-05 1:16

mpsundar

8-Jul-05 1:16

How can i communicate my pc with mobile i am using f-Bus
how can i know my terminal ID and phone device id i am using Nokia 3315 wht will be the device id of it how to determine it if any know pls help me
thanks

regards
sundar

Re: communicating with the phone

ThatsAlok8-Jul-05 20:23

ThatsAlok

8-Jul-05 20:23

mpsundar wrote:
how can i know my terminal ID and phone device id i am using Nokia 3315 wht will be the device id of it how to determine it if any know pls help me

Have you got any software to connect to nokia phone or you have to create your Own!

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta
VC Forum Q&A :- I/ IV

How to Get Public IP Address

Member 1256658-Jul-05 0:44

Member 125665

8-Jul-05 0:44

I want to know the public IP of a machine which is on LAN and connected to internet through LAN.

It's easy to get private ip.

I want to do this using C/C++/VC++.
What API or functions or line of codes i have to use?

Rakesh

Re: How to Get Public IP Address

Alexander ^M.,8-Jul-05 4:00

Alexander ^M.,

8-Jul-05 4:00

You need a server that tells you the ip.

Don't try it, just do it! Wink | ;-)

Re: How to Get Public IP Address

cmk8-Jul-05 11:07

cmk

8-Jul-05 11:07

There are a couple sites out there that will return your public ip when queried.
e.g.
http://checkip.dyndns.org/[^]

So you send them a get and parse the return.
As i said there are other sites that you may not have to parse, or that use a protocol other than http ... i don't remember any of them off-hand though, check google.

...cmk

Save the whales - collect the whole set

Re: How to Get Public IP Address

Member 12566510-Jul-05 19:10

Member 125665

10-Jul-05 19:10

thakns for response.

I want to do it using my application.
Is there any API or any function which will tell me about my public ip..

Re: How to Get Public IP Address

cmk10-Jul-05 22:06

cmk

10-Jul-05 22:06

>> Is there any API or any function which will tell me about my public ip.
No.

Think about a typical home setup.

[Your PC] - [DHCP][Cable Modem] - [ISP] - ...

Your PC knows what IP the cable modem DHCP server has assigned it.
It can even find out what the cable modem IP is with respect to your PC.
But, the cable modem has 2 IP's, one on your internal network, and one assigned to it by the ISP.
You would have to query the cable modem (router) to find what IP it has on the ISP side.
This is possible, but generally too much work compared to a quick send/recv to a well-known server.

...cmk

Save the whales - collect the whole set

how to declare and use an array of pointer on functions?

bouli8-Jul-05 0:28

bouli

8-Jul-05 0:28

Hello people,

I'd like to know how to declare and use an array of pointer on functions?

Lets say:

<br />
void f1() { ... }<br />
void f2() { ... }<br />
void f3() { ... }<br />
<br />
typedef struct _toto<br />
{<br />
  int    x, y;<br />
  //how to declare my array of pointers  functions[3];<br />
} TOTO;<br />
<br />
TOTO g_toto;<br />
<br />
void InitTOTO()<br />
{<br />
  g_toto.x=g_toto.y=0;<br />
<br />
  // how to initialize my array of pointers on functions?<br />
  g_toto.functions[0]=f1;<br />
  g_toto.functions[1]=f2;<br />
  g_toto.functions[3]=f3;    <br />
}<br />
<br />
int main()<br />
{<br />
   InitTOTO();<br />
   for (int i=0; i<3; i++)<br />
     //how to call g_toto.functions[i]()<br />
}<br />

I hope you see what I wish to do...

Thanks for giving me the clue Smile | :)

Best regards.

Fred.

There is no spoon.

Re: how to declare and use an array of pointer on functions?

Cedric Moonen8-Jul-05 1:15

Cedric Moonen

8-Jul-05 1:15

The functions need to have the same prototype (that is, same return type, same number of arguments of same types).

Then you will need to typedef your prototype (just an example here):
typedef (int)MyFuncPrototype(int, int)

Then you can use your function pointer:

MyFuncPrototype FuncTable[3];<br />
FuncTable[0] = SomeFunction;<br />
....<br />
....<br />
FuncTable[0](5,6);  // Just as example

Re: how to declare and use an array of pointer on functions?

t!bast8-Jul-05 1:29

t!bast

8-Jul-05 1:29

one idea is to use a function with a pointer to a class holding you parameters.

typedef (int)MyFuncPrototype(pParamObject)

Re: how to declare and use an array of pointer on functions?

David Crow8-Jul-05 3:40

David Crow

8-Jul-05 3:40

See if this thread is of any help.

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

Command Handler problem in Dialog

ugur_basak7-Jul-05 22:42

ugur_basak

7-Jul-05 22:42

in my application, i use some dialogs to update some of the data. I want to add some accelerators. I can add this accelerators in other parts of the application, they work but in dialogs i've a problem. for example when i use Ctrl+A i just got a "beep", it doesn't even "OnEditSelectAll" use this function. How can i use accelerators with Dialogs.

Re: Command Handler problem in Dialog

Jose Lamas Rios8-Jul-05 3:10

Jose Lamas Rios

8-Jul-05 3:10

You can make a dialog use an accelerator resource (say IDR_DLG_ACCELERARATOR) doing the following:

Add the following members to your dialog class:

class CSomeDialog : public CDialog
{
   // All the normal stuff [...]
 
private:
   HACCEL m_hAccelTable;
 
public:
   virtual BOOL PreTranslateMessage(MSG* pMsg);
};

Add the following to the dialog constructor

CSomeDialog::CSomeDialog(/* Constructor parms [...] */)
{
   // What you already have [...]
 
   m_hAccelTable = LoadAccelerators(
                        AfxGetResourceHandle(),
                        MAKEINTRESOURCE(IDR_DLG_ACCELERARATOR));
}

Then add the following function implementation:

BOOL CSomeDialog::PreTranslateMessage(MSG* pMsg) 
{
   if (m_hAccelTable && ::TranslateAccelerator(m_hWnd, m_hAccelTable, pMsg))
      return TRUE;
 
   return CDialog::PreTranslateMessage(pMsg);
}

Hope that helps,

--
jlr
http://jlamas.blogspot.com/[^]

Re: Command Handler problem in Dialog

ugur_basak8-Jul-05 3:28

ugur_basak

8-Jul-05 3:28

Thank you Jose. it worked. A very pratical solution.

how to protect files like this?

szcococut7-Jul-05 22:24

szcococut

7-Jul-05 22:24

I have a file (d://*.txt)

require :

1.My app(exe) can read ,write ,delete ,update this file;
2.user(you or me) can't write ,update ,delete this file,but he can read this file.

can you give me advise please?
thanks

Re: how to protect files like this?

khan++7-Jul-05 23:34

khan++

7-Jul-05 23:34

Open the file in read-only mode, and keep it open. That way no one can write to, or delete the file.
When you need to write to it, or update it or delete it, close the file handle, then do whatever you want with it.
Have fun.

this is this.

Re: how to protect files like this?

toxcct8-Jul-05 0:51

toxcct

8-Jul-05 0:51

won't work anymore when closing the application

TOXCCT >>> GEII power
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