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WalderMort wrote: Why is it that C has a whole bunch of other functions like calloc(), realloc() and _msize()? The latter is what pains me today.
C is a pain 
WalderMort wrote: Most of you will say to use a vector,
Yes...
WalderMort wrote: For example I need to allocate space for a RGNDATA struct which is a little more than a simple array. Allocating the space is no problem, but how is it possible to later find out how much memory was allocated? In C a call to _msize() would do the job, but experience tells me not to mix C and C++ when it comes to memory.
The way that classes like vector do it is to store the size in a variable, I am sure.
WalderMort wrote: Is there a way to do this other than storing the size when it was allocated?
There are tricks with sizeof that I've seen used, such as sizeof(x)/sizeof(char) for the size of a char array. But, I'd be inclined to use vector, the address of item [0] is the address of the whole array. Or, write your own class to handle it.
Christian Graus - C++ MVP
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WalderMort wrote: Allocating the space is no problem, but how is it possible to later find out how much memory was allocated?
This *might* work:
int *x = new int[345];
printf("You allocated %lu bytes\n", *((unsigned long *) x - 4));
"Approved Workmen Are Not Ashamed" - 2 Timothy 2:15
"Judge not by the eye but by the heart." - Native American Proverb
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I am making a SDI application.In that when a user click a tool bar button a dialog box opens up in that user have to fill sum values n then he has to press save button ...
what i want to do is when user click on save button that particular dialog box s'ld colse down n the values from that dialog box should go in list ctrl made in sdi application
I m not getting the way to it..may be post message or send message is helpful in it but i do not knw how to use them
can anyone help in this
thanxs
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Hi,
Actually, you'd use PostMessage if your dlg were modeless.
Probably not. The save button closes the dlg, but after that you hold the C++ object of that dlg. So you can retrieve the entered values from the dlg and pass them to the list ctrl;
<br />
CMyDlg dlg;<br />
if (IDOK == dlg.DoModal())<br />
{
CString val1 = dlg.m_val1;<br />
<br />
m_list.Add (val1);
}
--
======
Arman
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After adding ATL Aupport to MRFC application, then i added ATL COM object ,but this object is not registering.... how can i register?
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kiranin wrote: After adding ATL Aupport to MRFC application, then i added ATL COM object ,but this object is not registering.... how can i register?
what error is it giving~
"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
Support CRY- Child Relief and you
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no error, just it cant registered in registry, for example when i add context menu items to textfiles it cannot displayed when create through MFC. Now what i want is how can i register ATL COM object in MFC Application
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how can i Add context menu item through MFC Application,
i saw many examples, in all examples context menu item is added through ATL COM wizard,
but my application is MFC, when i launch my application context menu item will be added .
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kiranin wrote: i saw many examples, in all examples context menu item is added through ATL COM wizard,
but my application is MFC, when i launch my application context menu item will be added .
Handle OnLButtonDown Message and generate your own context menu there
"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
Support CRY- Child Relief and you
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i want to add shell context menu item to explorer not to my application items.
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I think I saw examples of this object on codeproject did you search?
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Hi all.
In my application I am calling a SHGetFolderLocation() function to load a browse Folder dialog.
I have included Shlobj.h and also I have added shell32.lib file in
Project->Settings->Lib tab.
The version of shell32.dll is 6.0.2900.2180.
But when I tried to compile a program, it gives me a compile time error
" error C2065: 'SHGetFolderLocation' : undeclared identifier "
Can anybody help?
Thanks
Rakesh Thakur
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Try to#define _WIN32_IE 0x0500
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Thanks for reply.
I tried adding #define _WIN32_IE 0x0500
but didn't worked-out.
Thanks
Rakesh Thakur
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In the same file in which I am calling that function.
Rakesh Thakur
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Do you insert it to stdafx.h
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Yes I have
#include "stdafx.h"
#include "shlobj.h"
#define _WIN32_IE 0x0500
Rakesh Thakur
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If you insert this line on StdAfx.h I think it must solve
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Rakesh_Thakur wrote: #define _WIN32_IE 0x0500
You must define it before anything else.
"Approved Workmen Are Not Ashamed" - 2 Timothy 2:15
"Judge not by the eye but by the heart." - Native American Proverb
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Try it like this:
#define _WIN32_IE 0x0500
#include "stdafx.h"
#include "shlobj.h"
If you want, you can put _WIN32_IE=0x500 into the PreProcessor Definitions on the Project Properties page
Scott
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Perhaps you meant to respond to Rakesh.
"Approved Workmen Are Not Ashamed" - 2 Timothy 2:15
"Judge not by the eye but by the heart." - Native American Proverb
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Try it like this:
#define _WIN32_IE 0x0500
#include "stdafx.h"
#include "shlobj.h"
If you want, you can put _WIN32_IE=0x500 into the PreProcessor Definitions on the Project Properties page
Scott
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