C / C++ / MFC

Re: How to get button in MSN when create a ATL-COM application.

24-Mar-04 15:20

I dont know why ppl wants to put buttons in MSN messenger, yahoo messenger and what not....
If the MSN messenger is not documented to work the way IE works(for customisability) then you cant effectively put buttons into that. Mad | :mad:

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Pankaj Bhalla25-Mar-04 11:22

Pankaj Bhalla

25-Mar-04 11:22

Hi there.

So, sir you mean, by no way we can create buttons on MSN messenger. One more issue, do u know how to invoke outlook from VC++ application. I mean, i do not want to send the mail directlty, I want to have Outlook up, so that user can type in the subject and message and then can send the email.

Thanks and Regards,

Pankaj Bhalla.

Pankaj Bhalla

Re: How to get button in MSN when create a ATL-COM application.

Prakash Nadar25-Mar-04 14:33

25-Mar-04 14:33

This will give you some idea Click Click[^]

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string arrays in c++

mrspam24-Mar-04 10:55

mrspam

24-Mar-04 10:55

Consider the following:

string mystring[] = {"Hello","World"};

How do I find how many elements my array of has?
If for example I wanted to loop through the array and count the elements that had the letter 'L' or 'l' in them.

displaying something like:
element 1: 2
element 2: 1

My main focus here is how do I find out the number if elements in a given array.

Thanks in advance for your help.

antlers24-Mar-04 11:19

antlers

24-Mar-04 11:19

sizeof( )

is your friend here.

Remember, it will give you the size of the whole array,
so you have to divide by the size of each element.

BlackDice24-Mar-04 11:21

24-Mar-04 11:21

I know with regular arrays you would do a sizeof(mystring)/sizeof(string), but I really don't know about with string variable types.

If it's broken, I probably did it

bdiamond

mrspam24-Mar-04 12:13

mrspam

24-Mar-04 12:13

Cool,
What about if we take it one step further and have this:

int main()
{
string mystring[] = {"ASD","asdf"};
int i;
i = myfunc(mystring[]);
cout << i;

return 1;
}

int myfunc(string mystring[])
{
int i;
i = sizeof(mystring) / sizeof(mystring[0];

return i;
}

I get two different results when using the sizeof() in myfunc and sizeof in main....

Do I need to pass a pointer to the string??

Curi0us_George24-Mar-04 19:03

Curi0us_George

24-Mar-04 19:03

You must pass the array size to myfunc. Myfunc receives a string pointer (that's all an array really is, a pointer to a contiguous block of strings), and has no way of knowing the size of the array that pointer points to.

Inside the main function, the compiler substitutes the sizeof operator for the actual known size of your string array. However, inside the myfunc function, the compiler has no way to determine the size of the array passed. If you print the sizeof(mystring) in myfunc, you'll find it always equals 4, the size in bytes of a pointer (on the x86 architecture).

It would probably be better if sizeof() never worked on arrays at all. At least then it would be consistent and less likely to confuse people who've never run into this before.

Paul Ranson25-Mar-04 1:53

Paul Ranson

25-Mar-04 1:53

It might be preferable to find a way to use

vector< string > mystring ;

Then mystring.size () is obviously the size...

Otherwise you could use a sentinel,

<br />
string mystring [] = { "Hello", "World", "" } ;<br />
<br />
void DoSomething ( string mystring [])<br />
{<br />
   while ( !mystring->empty ())<br />
   {<br />
      DoSomethingWithMystring ( mystring ) ;<br />
      ++mystring ;<br />
   }<br />
}<br />

Paul

Calling DLL from Delphi

BlackDice24-Mar-04 10:51

Re: Calling DLL from Delphi

24-Mar-04 10:51

I've finally made my DLL (with help that I am truly grateful for from many members of CodeProject - thanks for being patient Cool | :cool:

) .However I actually made the DLL to be called from Delphi instead of VB. I have been using VB because I know VB. But the function in the DLL accepts strings, which for VB I have used BSTR and __stdcall. Can I still use BSTR for Delphi and what about the calling convention? Thanks in advance for all your help!!! Big Grin | :-D

If it's broken, I probably did it

bdiamond

S^nyp24-Mar-04 14:11

S^nyp

24-Mar-04 14:11

Just google it.

Actual Linux Penguins were harmed in the creation of this message.

Re: Calling DLL from Delphi

Prakash Nadar24-Mar-04 15:16

error LNK2001 with static and global data in a Win32 C++ Dll

24-Mar-04 15:16

If your DLL api's input is a BSTR then the code in delphi has to pass the parameters in BSTR.
otherwize it will simple not work. Smile | :)

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Hashim Saleem24-Mar-04 10:49

Hashim Saleem

24-Mar-04 10:49

I am facing a head scratching problem in building a Win32 Dll. I have some C++ classes in the Dll and I want to access these classes in a C++ client. These classes contain some static data and also Dll has some global data. I have successfully build the DLL, but when I use this DLL in client, I get Linker error "LNK2001: unresolved external symbol" for static as well as global data.

I viewed the exports of dll with dumpbin utility and dumpbin shows this data exported but linker is not finding it in the dll. I read somewhere that there is a SECTION statement in .DEF file which deals with the defualt scope of global and static data in a DLL. Can this be used to rectify this problem and if yes then how? As a note, I am not using .DEF file to build the dll, I am using __declspec(dllexport) keyword to export classes and global data from dll.

Please help me, I am scratching my head at the moment.

Re: error LNK2001 with static and global data in a Win32 C++ Dll

BlackDice24-Mar-04 10:55

Re: error LNK2001 with static and global data in a Win32 C++ Dll

24-Mar-04 10:55

You sound like you're a lot smarter than me, so please forgive me if I sound stupid. But I was just wondering if you're actually #include-ing the header file and linking to the .lib file. Or don't you have to do this? Please don't think I'm being sarcastic, but I've just gone through a DLL hell of my own and I'm still kinda new, so I'd also like to know the answer;)

If it's broken, I probably did it

bdiamond

Hashim Saleem24-Mar-04 11:02

Hashim Saleem

24-Mar-04 11:02

yes, I m including the header file and also linking with .lib file but ........................... Mad | :mad:

Re: error LNK2001 with static and global data in a Win32 C++ Dll

BlackDice24-Mar-04 11:18

Invoking Outlook Exp. from VC++ Application.

24-Mar-04 11:18

sorry, that's about the extent of my knowledge. Wish I could've been more help Cry | :((

If it's broken, I probably did it

bdiamond

Pankaj Bhalla24-Mar-04 10:46

Pankaj Bhalla

24-Mar-04 10:46

Hi there.

I am facing an issue. I am not able to invoke MS Outlook Exp. from my VC++ application. What I need is, when I click on a button, Outlook exp. should came up with an E-Mail address that we are getting from our own database.

Thanks and Regards,

Pankaj Bhalla
pankajbhalla@mantraonline.com

large font vs. small font woes ...

Maximilien24-Mar-04 10:15

Maximilien

24-Mar-04 10:15

what do I have to search for to be able to fix large font/small fonts problems ?

The problem is that the dialog size is fixed ( which is not supposed to be, I think ) so now, in large font, some controls overlap; and I need to resize.

Is MapDialogRect the way to go ?

Is there a way to debug large font/small font without having 2 computers or need to restart each time I change the setting ?

Thanks.

Maximilien Lincourt
Your Head A Splode - Strong Bad

Re: large font vs. small font woes ...

Todd Smith25-Mar-04 13:28

Todd Smith

25-Mar-04 13:28

If you do your work in Large Font mode things will work out.

Todd Smith

doc/view app with treeview on the left, how?

lordgreg24-Mar-04 9:57

lordgreg

24-Mar-04 9:57

i created new mfc application with multi doc/view. now, i would like to have also treeview in the main dialog. i would put it on the left of it. how to do that?

any ideas?

Prakash Nadar24-Mar-04 15:13

24-Mar-04 15:13

I dont have the exact idea... what all changes are to be made, but just for a help you can construct a new doc/view project with splitter window and checkout the OnCreate event of the frame thats where the splitters are created.

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axid3j1al24-Mar-04 19:24

axid3j1al

24-Mar-04 19:24

Option 1

Follow the excellent instructions from "Paul R Thompson"

Pauls Splitter Gear

Download and copy

MFC SplitterWnd Sample

Option 2

Copy this.

[1] Create new project (sdi)

Add this to MainFrm.h

CSplitterWnd split;
BOOL m_bInitSplit;

Initialise m_bInitSplit to FALSE in MainFrm.h constructor.

Override OnCreateClient in CMainFrame (alt+enter in VC 6.0 mode or ctrl-alt-x-click in BS .NET mode)

Add this

CRect cr;
GetClientRect( &cr);

if ( !split.CreateStatic( this,1,2) )
{
MessageBox( "Error setting up splitter frames!",
"Init Error!", MB_OK | MB_ICONERROR );
return FALSE;
}

/* Note CTreeStuff is not defined yet. See later */

if ( !split.CreateView( 0, 0,
RUNTIME_CLASS(CTreeStuff),
CSize(200,50), pContext ) )
{
MessageBox( "Error setting up splitter frames!",
"Init Error!", MB_OK | MB_ICONERROR );
return FALSE;
}

/* you will have to change this to your RUNTIME_CLAS CView derived class */
if ( !split.CreateView( 0, 1,
RUNTIME_CLASS(CtmpView),
CSize(cr.Width(),cr.Height()), pContext ) )
{
MessageBox( "Error setting up splitter frames!",
"Init Error!", MB_OK | MB_ICONERROR );
return FALSE;
}

m_bInitSplit = TRUE;

ensure that you replace

return CFrameWnd::OnCreateClient(lpcs, pContext);

with this

return TRUE;

Add a MFC class CTreeStuff deriving from CFormView

Drag a CTreeCtrl and plonk it your form view.

Add stuff to your tree control.

Regards,

axe

Prakash Nadar24-Mar-04 19:50

24-Mar-04 19:50

Solution is good, but really this wont go to the inbox of the original poster. Smile | :)

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