SysListView32 - C / C++ / MFC Discussion Boards

Re: Running one function but different paths for a number of menu items

HENDRIK R30-Jan-03 21:24

30-Jan-03 21:24

Uhm ... I must admit I never thought of such a solution. but as I see it, it could work, provided that there's no other ID defined between 5000 and 5500. Give it a try and you'll know whether it's practical or not.;)

Cannot open include file: 'iphlpapi.h'

Anonymous30-Jan-03 4:16

Anonymous

30-Jan-03 4:16

I want to use 'iphlpapi.h' (I want to be able to use GetAdaptersInfo) in a MFC application, but I get this message:
Cannot open include file: 'iphlpapi.h'

What can I do?

Thanks

-- n

Re: Cannot open include file: 'iphlpapi.h'

Andreas Saurwein30-Jan-03 4:47

Andreas Saurwein

30-Jan-03 4:47

install the platform SDK (see msdn.microsoft.com/sdk[^])

Holy Sh*t! I'm speechless. (hey, that's a first) Marc Clifton, The Lounge

Re: Cannot open include file: 'iphlpapi.h'

Anonymous30-Jan-03 21:28

Anonymous

30-Jan-03 21:28

Thanks, I just realized after posting this question.

Sorry!

Thanks a lot.

-- n

Re: Cannot open include file: 'iphlpapi.h'

Anonymous30-Jan-03 21:47

Anonymous

30-Jan-03 21:47

Yes, I just installed the SDK.
But I get this error:
c:\program files\microsoft visual studio\vc98\include\iphlpapi.h(183) : error C2065: 'PMIB_ICMP_EX' : undeclared identifier

Any ideas.

Thanks

Re: Cannot open include file: 'iphlpapi.h'

naradaji31-Jan-03 3:22

naradaji

31-Jan-03 3:22

It's solved including the right directories in tools / options / directories.

Thanks

CbitmapButton work as a checkbox ?

Maximilien30-Jan-03 4:13

Maximilien

30-Jan-03 4:13

Is it possible to do it ?

I created a CButton in a dialog, and made it a CBitmapButton :

// myDialog.h
  CBitmapButton myButton;
...

// myDialog.cpp
  DDX_Control(pDX, IDC_OPTION_PANEL_CHECKBOX, m_myButton);
...
BOOL myDialog::OnInitDialog() 
{
 CDialog::OnInitDialog();
 myButton.SetButtonStyle( BS_AUTOCHECKBOX  ); // also tried BS_CHECKBOX 
 myButton.LoadBitmaps(IDB_SHOW_HIDE_OPTION_PANEL_UP,IDB_SHOW_HIDE_OPTION_PANEL_DOWN );
 myButton.SizeToContent();
...
}

If I do SetButtonStyle( BS_AUTOCHECKBOX ) I loose the bitmaps and the button becomes a simple checkbox button.

Did I miss the obvious ?

Thanks.

Max.

SysListView32

shivpal30-Jan-03 3:32

shivpal

30-Jan-03 3:32

Hi,

I want to use this control in my win32 program (not mfc) through rc file.
When I use this control, the dialog box is not displaying.
Can anybody help please?

RC file excerpts:
CONTROL "",IDC_LIST1,"SysListView32",LVS_ALIGNLEFT | WS_BORDER |
WS_TABSTOP,81,10,60,50
Thanks in advance.

Regards,
Shivpal

Did you forget to initialize common controls?

30-Jan-03 3:45

void InitCommonControls(VOID);

Re: Did you forget to initialize common controls?

shivpal30-Jan-03 3:59

shivpal

30-Jan-03 3:59

Yes. I did it and its working now Smile | :)

Thanks a lot
Shivpal

Destructor question, STL map

ns30-Jan-03 3:13

30-Jan-03 3:13

WHy is this happening?

I have:

CImage & ImageRemus = m_PaletteMap[m_PalRemus];

If I put a breakpoint at this line and step in ,it crashes if I try to advance to next line of code (step over).

But if I put a breakpoint in the destructor of my CImage class, and say run to next breakpoint from this first breakpoint, it steps into the destructor!!!! (It crashes there).

Question is why is it stepping into the destructor?

Appreciate your help,
ns

Re: Destructor question, STL map

AlexO30-Jan-03 3:36

AlexO

30-Jan-03 3:36

There is not enough information, so I am going to guess.
1. member at position m_PalRemus does not exist.
2. CImage default constructor does not initialize object properly OR you did not overwrite copy constructor.

Could you show the whole function and exact declaration of the map. The declaration of CImage would help too.

Resolved, thanks

ns30-Jan-03 4:02

30-Jan-03 4:02

Hi Alex,

I stil dont know why it went into the destructor. But I found out that I hadnt initialized a member in the constructor, so it was pointing to some invalid address. Then in the destructor I was having it delete that pointer if it existed. It did exist because it wasnt initialized and then it tried to delete it. The big mystery is --- why did it even go into the destructor in the first place? After i fixed the error (omission), and put breakpoints in the destructor, the program never did venture into the destructor .....puzzled. Confused | :confused:

Appreciate your help,
ns

Re: Resolved, thanks

AlexO30-Jan-03 4:30

AlexO

30-Jan-03 4:30

Here is simplified explanation
std::map<key, type=""> operator[]:
1. check if member at Key position exist (same as calling map::find(Key))
2. if does not exist create new value
a. Create temporary object of Type (call to Type::Type() constructor)
b. Copy the temporary obect to the position [Key](call to Type::Type(const Type &) constructor)
c. Destroy temporary obect(call to Type::~Type())
3. Return Type& to the element at Key position

Thanks!!

ns30-Jan-03 4:40

30-Jan-03 4:40

Thats really clarified the process to me. Thank you so much....now it makes perfect sense!! Smile | :)

Appreciate your help,
ns

Re: Destructor question, STL map

Zdeslav Vojkovic30-Jan-03 4:02

Zdeslav Vojkovic

30-Jan-03 4:02

the definition of std::map<>::operator[] says it returns value of insert(value_type(key, T())).
this value_type(key, T()) creates temporary T object (CImage in your case) using default constructor. This temp object is destroyed when operator[] exits, therefore the destructor is called.

Re: Destructor question, STL map

ns30-Jan-03 4:43

30-Jan-03 4:43

Thanks. I get it now... Smile | :)

Appreciate your help,
ns

Excute a function from Thread in Class

willempipi30-Jan-03 2:52

willempipi

30-Jan-03 2:52

here is my problem:

<br />
<br />
Class test<br />
<br />
void test::showmsg<br />
{<br />
    AfxMessageBox(m_msg);<br />
}<br />
<br />
function thread<br />
<br />
UINT testThread(LPVOID param)<br />
{<br />
    ?????? ctrl = class mainclass  control ??????<br />
<br />
    for (int i = 0; i < 100; i++)<br />
    {<br />
         ctrl->m_msg.Format("%d", i);<br />
         ctrl->showmsg();<br />
    }<br />
<br />
    return 0;<br />
}<br />
<br />

this is a simple example of what i want to do, the thread is gonna be a connection with a network.

Re: Excute a function from Thread in Class

Rage30-Jan-03 3:00

Rage

30-Jan-03 3:00

When launching the thread, give this as parameter.

Then with a CMainDlg *ctrl = (CMainDlg*)param; (instead of the line where you put ?????)everything should be fine.

~RaGE();

Re: Excute a function from Thread in Class

HENDRIK R30-Jan-03 3:00

HENDRIK R

30-Jan-03 3:00

You should pass a pointer to your class test when calling AfxBeginThread, supplying the pointer as second parameter.

in test, where starting your thread:

AfxBeginThread(testThread, (LPVOID)this)

insert gif file in dialog window

rohit.dhamija30-Jan-03 2:42

rohit.dhamija

30-Jan-03 2:42

How can we insert a gif file (or any image file ) in a dialog window ? Sleepy | :zzz:

Re: insert gif file in dialog window

Rage30-Jan-03 3:02

Rage

30-Jan-03 3:02

If it is a bmp, you have lots of possibility (Creating a CStatic, and load your bitmap in it with help of LoadBitmap());

For gif or other, you'll have to get a specific loader.

~RaGE();

crashes if debugged, runs okay if executed.

ns30-Jan-03 2:38

30-Jan-03 2:38

App runs fine when just executed. IF i put in a breakpoint and step in:

It crashes at the point where I create a map:

CImage x;

MyMap["abc"] = x;

(alternatively I did

CImage &x = MyMap["abc"];

- same effect )

The debug window says: Invalid Address specified to RtlFreeHeap
Looked it up on the web...not much help.
The assembly is pointing to an int 3 instruction
The call stack is in NTDLL.
Its in delete() in AFXMEM.cpp ( I think thats the name of the file where the call stack points to...)

Appreciate your help,
ns

Re: crashes if debugged, runs okay if executed.

Andreas Saurwein30-Jan-03 4:50

Andreas Saurwein

30-Jan-03 4:50

seems that something tries to free (delete, delete[], free(), etc) a memory block which is not valid or already freed.
You might have a stack corruption, or your map class tries to free the "abc" string. There are a lot of possible causes.

Holy Sh*t! I'm speechless. (hey, that's a first) Marc Clifton, The Lounge

Re: resolved thank you

ns30-Jan-03 4:56

30-Jan-03 4:56

Yup. I found that I hadnt initialized a pointer in the constructor, and then was trying to delete it instantly if it exists. Of course it existed with garbage (unintialized) in it....so it was unhappy. Many thanks for the remote - hit the nail on the head debugging....

Appreciate your help,
ns

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