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Twinsen,
Hey man .. looks to me like this ..
If you call get(1) it returns to you the newly created x object, which you store as a reference (or even simpler "a copy"). When you go to increment the value for i it's completely valid because you initialized nothing to being constant and are simply changing the variable inside the class.
Maybe I'm missing something huge, but I didn't see anything besides one of the constructors (which was never called) that takes in a const object.
Hope this helps,
Jay
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Hi Jay,
Thanks to your reply~
Your remark is reasonable. I think the key point of the problem
is that what get() returns is a temporary object which is default
const by the compiler, so I think it isn't a lvalue. Your reply makes
me trust that the compiler in fact generates a const
temporary, but because the return type is "X" other than "const X",
a implicit conversion happened so that the complier didn't complain
when compiling the file. Am I right?
Thanks a lot!
Best regards
Twinsen
-- modified at 21:36 Thursday 30th March, 2006
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Twinsen,
I believe this is very likely the case, the implicit conversion may be going on behind the scenes. What compiler are you using?
-- Jay
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Hi Jay,
I use cl.exe of MS VC++6.0 IDE.
Best regards
Twinsen
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Same here.
I think we're both correct here. If anyone else reading this knows otherwise please let me know 
Glad I could be a little help Twinsen!
Cheers,
-- Jay
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Hi Jay,
Your remark is very helpful! 
Best regards
Twinsen
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Assuming you have a class hierarchy like:
CBase
CUser
CMember
CMember* pMember = new CMember();
When you check the class name of the pMember pointer using RTTI (if available) you would likely get CMember
If you checked the value of a the this pointer inside a CMember method, say:
CMember::doSomething()
{
CRuntimeClass* pRT = this->GetRuntimeClass();
CString cls_name = pRT->m_lpszClassName;
}
cls_name I would assume would be CMember
However, if you performed this same action in say:
CUser::doSomething()
{
CRuntimeClass* pRT = this->GetRuntimeClass();
CString cls_name = pRT->m_lpszClassName;
}
Would cls_name be CUser despite the instantiated object being of type CMember???
I could just test this code, but I no longer have a VC++ install on my computer and I'm in an argument with a friend :P
Thanks 
It's frustrating being a genius and living the life of a moron!!!
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I wrote a ManagedC++/.NET wrapper around Uniscribe. Which is the lowest level international text rendering (win32) API as I understand it.
With it I'm able to do custom rendering of formatted international text.
That's all good.
(For the curious who don't know it, you use various ScriptXXX to perform text analysis and then you finally render 'glyphs' (as opposed to characters) with ScriptTextOut)
Now come the problem, when I try to print.
I even manage to achieve perfect WYZIWIG behavior, that's cool and it works well on my work computer, on many customer's computer, on my home computer.
BUT, for some customer the preview is completely blank.
And for some other the printed page is completely blank as well.
What could it be?
How to fix that?
Any ideas?
Yep I have already (and unsuccessfuly) tried news://news.microsoft.com/microsoft.public.win32.programmer.international
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Hi.
If i want to hide a program all windows, only need hide all top-level windows? How about child windows?
Thank you.
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If a window is hidden you can't see its children.
Steve
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Hi;
1|2|3
4|5|6
7|8|9
That is a tic tac in c++.
I want to replace 5 by X and 3 by 0, but I have problem SET().
Can I do the following way move?
set X (int);
if( board [4]== 5)
return X;
-- modified at 9:34 Thursday 30th March, 2006
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What language are you programming in ?
~RaGE();
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I tried to submit an article today but had a mistake:
I can not find place to upload my files, at which step? how many (zipped or image) files I should prepare?
A special image tool for Windows C++ programmers, don't miss it!
A nice hyper tool for optimizing your Microsoft html-help contents.
Includeh10
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Go here and click the "Modify this article" link.
"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain
"There is no death, only a change of worlds." - Native American Proverb
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Well done!
I modified my first article and tested it, all are right!
One suggestion:
Aticle process should upload files first, then article text. Otherwise author can not test downloads and view images in "preview".
see this link to my first article
I will add more aticles at my spare time, it is interesting.
cheers.
A special image tool for Windows C++ programmers, don't miss it!
A nice hyper tool for optimizing your Microsoft html-help contents.
Includeh10
-- modified at 22:43 Wednesday 29th March, 2006
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Please help me guys,I am getting crazy 
Following code was working in VS2003, but is not working in VS2005.
It displays the tooltip when I move the mouse over the button , but if I click the button at least once and then try to move the mouse over it then the tooltip is never displayed 
void CMYBUTTON::SetToolTip(LPCTSTR strText, BOOL bActive )
{
if (strText == NULL) return;
if (m_ToolTip.m_hWnd == NULL)
{
m_ToolTip.Create(this);
m_ToolTip.Activate(FALSE);
}
if (m_ToolTip.GetToolCount() == 0)
{
CRect rect;
GetClientRect(rect);
m_ToolTip.AddTool(this, strText, rect, 1);
}
m_ToolTip.UpdateTipText(strText, this, 1);
m_ToolTip.Activate(bActive);
}
BOOL CMYBUTTON::PreTranslateMessage(MSG* pMsg)
{
if (m_ToolTip.m_hWnd == NULL)
{
m_ToolTip.Create(this);
m_ToolTip.Activate(FALSE);
}
m_ToolTip.RelayEvent(pMsg);
return CButton::PreTranslateMessage(pMsg);
}
What can be the problem
thank you.
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Hi big_denny_200 ,
your problem is attractive so I test this problem in vs2003 and vs2005
and you right.then I write this code and this worked in vs2003 but in vs2005
it's exactly (It displays the tooltip when I move the mouse over the button , but if I click the button at least once and then try to move the mouse over it then the tooltip is never displayed)
Now you check this code
m_tooltip.Create(this);
SetToolTip(_T("ADAD"));
void CAnswer::SetToolTip(LPCTSTR lpszText)
{
if (!lpszText)
return;
TOOLINFO ti;
ti.cbSize = sizeof(TOOLINFO);
ti.lpszText = (LPTSTR)lpszText;
ti.hinst = AfxGetInstanceHandle();
ti.hwnd = m_Button1.m_hWnd;//GetDlgItem(IDC_BUTTON1)->m_hWnd;
//this->GetParent()->GetSafeHwnd();
ti.uFlags = TTF_SUBCLASS | TTF_IDISHWND;
ti.uId = (UINT) m_Button1.m_hWnd;//GetDlgItem(IDC_BUTTON1)->m_hWnd;
//this->GetSafeHwnd();
m_tooltip.SendMessage(TTM_ADDTOOL, 0, (LPARAM) &ti);
}
this way maybe not good but this worked,well I insert function SetToolTip in the event button Again for vs2005
But in vs2003 Nothing
void CAnswer::OnBnClickedButton1()
{
SetToolTip(_T("ADAD"));
}
maybe it is some helpful to you
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I am using wm asfwriter to write wma files, and I would like to write a segment of the song using IMediaSeeking::setpositions, but hr = E_NOTIMPL. I added wm asf writer to the graph, and used renderfile to load songs, and built the filter graph. I reached ImediaSeeking through writer filter, then used setpositions function to locate the segment I would like to write. But setpositions did not succeed. Thanks for your help.
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Hi, I am using ADO 2.81 with C++ 6.
In my program I have a datagrid which is filled with data from adodatacontrol. Whenever i select a different row, my app needs to display information about it. The problem is, I can't find in which row the user clicked...
Is there any code that can help me?
i am trying to put it in the function:
void CMyDlg::RowColChangeDatagrid(VARIANT* LastRow, short LastCol)
here lastRow shows the last row clicked not the present.
I tried with dataGrid.get_Row();
this works fine if I dont scrool the data grid. But if I do so, it gives me the same informations (like I am not scrolling)
PLS help
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Hello, I'm trying to create a program that will allow me to launch various applications as many times as I want, and also close them all at once. So far I have manage to code the launch part. my program runs and gives the choice to execute three programs: notepad, calculator, and paint. I can keep on crating as many isntances as I want of any of the three programs. However, I have not been able to come up with a solution to close all of the open programs at once, this will be done when the option 4 is selected from the menu!! So far my program only closes the last opened application, but not the rest..How can I come about resolving this problem thank you.. here is my code::
#include windows.h
#include stdio.h
#include stdlib.h
#include "linkedlist.h"(structure contains: PROCESS_INFORMATION si, and *next node)
void P1();
void P2();
void P3();
void main(void)
{
Node *head = NULL;
Node *newPtr = new Node;
STARTUPINFO si;
//PROCESS_INFORMATION pi;
ZeroMemory(&si, sizeof(si));
si.cb = sizeof(si);
//ZeroMemory(&pi, sizeof(pi));
int num=0;
while(num!=5){
//char ch ='0';
//char skip[31]="";
system("cls");
printf("\t\t****Select which application to execute *****\n\n"
"\t\t\t1.NotePad\n \t\t\t2.Calculator\n \t\t\t3.Paint\n\t\t\t4.Quit\n\n");
scanf("%d", &num);
if (num==1){
CreateProcess(NULL,"C:\\Windows\\System32\\Notepad.exe",NULL,NULL,NULL,NULL,NULL,NULL,&si,&newPtr->pi);
}
if(num==2){
CreateProcess(NULL,"C:\\Windows\\System32\\Calc.exe",NULL,NULL,NULL,NULL,NULL,NULL,&si,&newPtr->pi);
}
if(num==3){
CreateProcess(NULL,"C:\\Windows\\System32\\Mspaint.exe",NULL,NULL,NULL,NULL,NULL,NULL,&si,&newPtr->pi);
}
if (num==4){
TerminateProcess(newPtr->pi.hProcess,0);
TerminateProcess(newPtr->pi.hThread,0);
}
}
}
-- modified at 11:06 Wednesday 29th March, 2006
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What does it do when 4 is selected? My guess is that it will close the most recently created process.
Each time that 1, 2, or 3 is selected, you need to create a new Node and add it to a list of some sort. Then when 4 is selected, iterate through this list, calling TerminateProcess(). Make sense?
eprt wrote: TerminateProcess(newPtr->pi.hThread,0);
You can't use a thread id with TerminateProcess().
"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain
"There is no death, only a change of worlds." - Native American Proverb
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Thanks for your help! Indeed when 4 is selected, it closes the most recently created process. Now you suggest that I implement a Linked list perhaps? If so does the creation of the new node will have to be declared within each if statement? thanx !!
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eprt wrote: Now you suggest that I implement a Linked list perhaps?
Yes. Use std::list from the STL.
"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain
"There is no death, only a change of worlds." - Native American Proverb
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A much better solution. Thanks.
"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain
"There is no death, only a change of worlds." - Native American Proverb
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