Re: How do I make this Unicode? - C / C++ / MFC Discussion Boards

Re: how to load a Dll in an ATL COM Server

Ollie8-May-02 23:14

8-May-02 23:14

Hi,

If I understand you correct, do you want to load a DLL at runtime? If so the look at the 'LoadLibrary' API for non MFC projects and AfxLoadLibrary for MFC projects....

else if at compile time then use the static library *.lib and the required header file

MFC Extension DLL Problems

Tony Fontenot8-May-02 17:51

Tony Fontenot

8-May-02 17:51

I have an MFC Extension DLL implemented in my program. It is a simple modless dialog. Everything works fine in Debug but when I go to release and run it I get an Assertion right when I try to set a variable in the DLL class from the calling app.

I can post some code it need be, but has anyone seen this. And if so, what are some of the ways that you have fixed it.

Thanks in advance

***********************
Tony Fontenot
Recreational Solutions
tony@recsolutions.com
***********************

Re: MFC Extension DLL Problems

Tony Fontenot8-May-02 18:12

Tony Fontenot

8-May-02 18:12

Sorry all. I figured it out. I copied the wrong dll.

Blush | :O

***********************
Tony Fontenot
Recreational Solutions
tony@recsolutions.com
***********************

How do I make this Unicode?

Matt Newman8-May-02 17:08

Matt Newman

8-May-02 17:08

CString strFullName
gethostbyname(const char *name)

This won't compile under Unicode in VC 7, How should i fix this?

gethostbyname(strFullName);

Thanks

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Re: How do I make this Unicode?

Michael Dunn8-May-02 17:21

Michael Dunn

8-May-02 17:21

CString only converts to LPCTSTR, which is a Unicode string when building for Unicode. The quickest way is to use an ATL conversion macro:

#include <atlconv.h>
 
{
USES_CONVERSION;
 
  gethostbyname ( T2CA((LPCTSTR) strFullName) );
}

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Re: How do I make this Unicode?

Matt Newman9-May-02 11:26

Matt Newman

9-May-02 11:26

Michael Dunn wrote:

{ USES_CONVERSION; gethostbyname ( T2CA((LPCTSTR) strFullName) ); }

Where do I put this?

if I replace the original with this it just makes it unreadable characters Confused | :confused:

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Re: How do I make this Unicode?

Michael Dunn9-May-02 16:39

Michael Dunn

9-May-02 16:39

You'll need to post some more of your code, like for example what's in the CString prior to the call?

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Re: How do I make this Unicode?

Matt Newman14-May-02 15:26

Matt Newman

14-May-02 15:26

Sorry about the delay I was gone this weekend

CString strTemp;
int item = 0;

struct hostent *host;
struct in_addr *ptr;    // To retrieve the IP Address

DWORD dwScope = RESOURCE_CONTEXT;
NETRESOURCE *NetResource = NULL;
HANDLE hEnum;

WNetOpenEnum(dwScope, NULL, NULL, NULL, &hEnum);

WSADATA wsaData;

WSAStartup(MAKEWORD(1,1),&wsaData);

if (hEnum)
{
    DWORD Count = 0xFFFFFFFF;
    DWORD BufferSize = 2048;
    LPVOID Buffer = new char[2048];

    WNetEnumResource(hEnum, &Count, Buffer, &BufferSize);

    NetResource = (NETRESOURCE*)Buffer;

    char szHostName[200];

    for (unsigned int i = 0; i < BufferSize/sizeof(NETRESOURCE); i++, NetResource++)
    {
        if (NetResource->dwUsage == RESOURCEUSAGE_CONTAINER && NetResource->dwType == RESOURCETYPE_ANY)
        {
            if (NetResource->lpRemoteName)
            {
                CString strFullName = NetResource->lpRemoteName;

                char buf[512];

                if (0 == strFullName.Left(2).Compare(_T("\\\\")))
                strFullName = strFullName.Right(strFullName.GetLength()-2);
                <code>host = gethostbyname(strFullName));</code>  // Problem Spot

                if (!host) continue;

                ptr = (struct in_addr *) host->h_addr_list[0];

                sprintf(buf, "%d.%d.%d.%d", ptr->S_un.S_un_b.s_b1,
                    ptr->S_un.S_un_b.s_b2, ptr->S_un.S_un_b.s_b3, ptr->S_un.S_un_b.s_b4);\

                List->InsertItem(item++, strFullName, 0);
                List->SetItemText(item - 1, 1, (LPTSTR)buf);
                List->SetItemText(item - 1, 2, NetResource->lpComment);
            }
        }
    }

This is the original code,

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Re: How do I make this Unicode?

Paul M Watt8-May-02 17:24

Paul M Watt

8-May-02 17:24

Look at the function WideCharToMultiByte to convert the UNICODE string to a char*.

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Light a man on fire, and he will be warm for the rest of his life!

Re: How do I make this Unicode?

Nish Nishant8-May-02 17:24

Nish Nishant

8-May-02 17:24

This is basically a guess.
But you might try using WideCharToMultiByte to convert the unicode string to a normal string

Nish

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Using struct with CList

Coremn8-May-02 17:07

Coremn

8-May-02 17:07

Here you go, no please tell me how to make it work.
It does not like my CList expression (and neither do I Smile | :)

)

<br />
typedef struct <br />
{<br />
   int data;<br />
   int temp;<br />
<br />
}dataStructure;<br />
<br />
typedef CList <dataStructure,dataStructure> dataList;<br />
<br />
<code><br />
<br />
p.s thanks bracket tip

Re: Using struct with CList

Paul M Watt8-May-02 17:46

Paul M Watt

8-May-02 17:46

Coremn wrote:
typedef CList <<datastructure,datastructure>> dataList;

You should change that to this:

typedef CList <dataStructure,& dataStructure> dataList;

BTW, you can add the single < or > by using & lt; and & gt;, or excapsulate all of your code in between <PRE> and </PRE> tags.

Build a man a fire, and he will be warm for a day
Light a man on fire, and he will be warm for the rest of his life!

Re: Using struct with CList

Christian Graus8-May-02 18:34

Christian Graus

8-May-02 18:34

< broken record >

CList sucks. Use std::list instead

< /broken record >

Christian

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Re: Using struct with CList

Coremn8-May-02 18:51

Coremn

8-May-02 18:51

Agreed

what happpened when casting

NicholasCougar8-May-02 16:55

NicholasCougar

8-May-02 16:55

Hi,
suppose there are to struct type,
struct small
{
float x;
double y;
};

struct large
{
int x;
float y;
double z;
bool w;
};
and in my program I coding as this:

large b;
small *p =(small) b;

what's going on inside the code operation?

Thank you.

Best regard.

I confess that I am a stubborn guy, but why not put things thoroughly, logically and systematically clean. One concrete prolem is worth a thousand unapplied abstractions.

Re: what happpened when casting [edited]

Nish Nishant8-May-02 17:19

Nish Nishant

8-May-02 17:19

NicholasCougar wrote:
small *p =(small) b;

This won't even compile. You are attempting to assign small to small*,( via unsafe casting).

Nish

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newb question:

stupration8-May-02 16:09

stupration

8-May-02 16:09

how do you add libs to a project in msvc? do you add the file itself to the project or include the name of said lib in the list of included libs in the project settings.

Re: newb question:

Paul M Watt8-May-02 16:17

Paul M Watt

8-May-02 16:17

You can do it either way, but I prefer to do it in the project settings.

Build a man a fire, and he will be warm for a day
Light a man on fire, and he will be warm for the rest of his life!

Re: newb question:

8-May-02 22:32

Sometimes (always) I'm lazy...
so I add libs via include file, here an snip from my OpenGL project:

<br />
#pragma comment(lib, "OpenGL32.lib")	//link with OpenGL32 Library (VC6 Sytnax)<br />
#pragma comment(lib, "Glu32.lib")	//link with Glu32 Library<br />

Hoep it helps, Moak

My question more about "C"

Volki8-May-02 15:36

Volki

8-May-02 15:36

I'm learning to use DialogBoxes in "C", via LCC-win32 compiler. My question is about managing virtual-keys. I can manage them while dialogues don't have controls (via WM_KEYDOWN message) but otherwise can not capture these virtual-keys. I guess this is about focusing on child-windows(buttons, checkboxes etc). But why? How?... In fact I can manage them if I use "ACCELERATOR" but want to learn that if is there a solution to do this without accelerator tables. I can not give a meaning to this. Isn't this WM_KEYDOWN message sending before a control? For instance, I have an aboutbox which has two buttons(OK-CANCEL), how can I capture VK_END virtual-key?(again; without accelerator tables). Thanks from now on whose interested in.

Re: My question more about "C"

8-May-02 16:04

Maybe you could try handeling the pretranslate message and trap it there. Not sure, just a guess.

Paul S

Re: My question more about "C"

Nish Nishant8-May-02 17:18

Nish Nishant

8-May-02 17:18

In dialog boxes, handling accelerator keys require a slight tweak. I have explained this in the following article :-

http://www.codeproject.com/useritems/pretransdialog01.asp

Nish

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Re: My question more about "C"

Volki9-May-02 14:31

Volki

9-May-02 14:31

Hi,

Thanks Nish. Thanks for your advance. In fact I'm very weak in C++, nevertheless I will try your article

Transparent windows

redeemer8-May-02 12:48

redeemer

8-May-02 12:48

Anyone have some info on that? I'd very much like to learn something about it. The new Winamp 3 has it, anyone know anything about it?

Thankyou

Re: Transparent windows

Anders Molin8-May-02 13:18

Anders Molin

8-May-02 13:18

I don't remember the names of the functions you use to make transparent windows, but search in the articles, I know there's a couple about this subject...

- Anders

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