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This looks like a bug in your installation, or a missing setting.
Have you checked all directory settings of Visual Studio. It uses those directories to discover the base classes available in the wizards, I think. Or, at least I've been able to add my headers/C++ files to these directories and be able to derive from them using the wizards.
Is the CObject available for derivation in other project types ? If it is, then it's a bug in the program. My Visual Studio 2003 allows derivation from CObject without problems.
-Antti Keskinen
----------------------------------------------
The definition of impossible is strictly dependant
on what we think is possible.
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I have Visual C++.NET and that allows derivation from CObject and I have tried Visual C++6.0 on Winows 200- and that doesn't 
At the moment I'm doing it manually but I'll have a look at the directory settings later.
Thanks 
Elaine ![Rose | [Rose]](https://codeproject.freetls.fastly.net/script/Forums/Images/rose.gif)
The tigress is here 
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hi all,
i am working on a program that requires loading a bitmap using win32 and then allows the user to click on the bitmap and then uses the clicked points for further processing. also i need to display line segments to the clicked points from the origin.
i have been able to load the bitmap and get the points by handling the WM_LBUTTONDOWN message. but i am have been unsucessful in displaying the line segments, please provide some suggestions !!! thanks in advance
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First Draw Bitmap then Draw line..then that will come over it...
Bitmap draw you know...
line draw as follow...
BOOL CXYZLine::Draw(CDC* pDC)
{
CPen penRuler;
if (!penRuler.CreatePen(m_nPenStyle, m_nPenWidth, m_LineColor))
return FALSE;
CPen* pOldPen = pDC->SelectObject(&penRuler);
pDC->MoveTo(m_ptStart);
pDC->LineTo(m_ptEnd);
pDC->SelectObject(pOldPen);
if(m_bSelected) DrawTracker(pDC);
return TRUE;
}
this is only I can help you...
Bye...
---Sumit Kapoor---
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Hi,
Does anyone know how to make CFileDialog show in the image thumbnail view? Doesn't seem to be straight forward and looks like a little hackery might be required.
Thanks in advance
Rich
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I've tried and failed  See the comments at the end of this[^] article for some of the gory details.
Rob Manderson
I'm working on a version for Visual Lisp++
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Thank for the swift response Rob, read your Article with interest. Found one code example that switches a CFileDialog into details view. Its achieved by overriding CFileDialog::OnInitDialog.
CFileDialog::OnInitDialog();
// heres the code to enable detail view
CWnd *parent = GetParent();
if ( parent != NULL ) {
parent->PostMessage(WM_COMMAND, 40964, NULL);
}
Apparently 40964 was identified using Spy, but can i as heck identify the message to switch to Thumbnail View! Any thoughts?
Thanks Again
Richard
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Hey all.
I'm developing an application that keeps track of helpdesk information. I want to add things such as "Product Name" "Title" "Information" fields. I've developed a prototype of this application using CStdioFile and just reading/writing straight text to one file that acts as the database. I'm wondering if there is a better/faster way of doing this? Such as storing the information in a binary file or something of that nature. If anyone could point me in the right direction, it would be most appreciated. I figure that once I add a bunch of data to this, this method is going to become useless because it is going to take too long to parse through the entire file and want to know the way that the "pro's" do it. (ie, like an excel spreadsheet has all the spreadsheet data in it, but if you looked at the file in notepad, it's all jargon...)
Thanks in advance!
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Well, you could Google for "indexed sequential access method", but why bother? Use some form of database - Access might be suitable for your purposes.
Stability. What an interesting concept. -- Chris Maunder
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Check out http://www.codeproject.com/database/CppSQLite.asp
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hi, I've a simple question, I've one main DialogBox that creates a second new one when a button is clicked, but the focus of application is passed to the new one dialog and the old one waits until it gets the quit from the other dialog, here's the code :
<br />
case IDC_MMC:<br />
if( bIsMmcDialogOpen == false)<br />
{<br />
DialogBox(hInst, MAKEINTRESOURCE(IDD_MMC), hwndMain ,DlgMMCProc);<br />
bIsMmcDialogOpen = true;<br />
EnableWindow(GetDlgItem(hWnd,IDC_MMC), false);<br />
UpdateWindow(hWnd);<br />
}<br />
break;<br />
and here it's the callback function of IDD_MMC
<br />
NT_PTR CALLBACK DlgMMCProc(HWND hWnd, UINT uMsg, <br />
WPARAM wParam, LPARAM lParam)<br />
{<br />
switch (uMsg)<br />
{<br />
case WM_CLOSE : <br />
bIsMmcDialogOpen = false;<br />
EndDialog(hWnd,1);<br />
break;<br />
}<br />
return false;<br />
<br />
}<br />
I need to get return to main Dialog immediatly, how to do it?
thanks
Paolo
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Paolo Ponzano wrote:
I need to get return to main Dialog immediatly, how to do it?
Use a modeless dialog instead.
"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen
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can I create a modeless dialog without using MFC??? what api should I use?
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Paolo Ponzano wrote:
can I create a modeless dialog without using MFC???
Sure.
Paolo Ponzano wrote:
what api should I use?
CreateDialog()<br />
CreateDialogIndirect()<br />
CreateDialogIndirectParam()<br />
CreateDialogParam()<br />
"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen
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but for doing so, I need to have a class registered of the main window? at this time I've not got, since my program consists in a DialogBox itself... but those functions refers to CreateWindowEx to create the box, so I think I've to register one, tell me if I'm right
Thanks again
Paolo
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The class, #32770, is already registered. All you need to supply is the template.
"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen
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i have got a icon from other program ,now i have the HICON of the icon,but if i use LoadIcon whose parameter need icon ID,do you have a good idea?
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In OnInitDialog():
m_hIcon = ExtractIcon(AfxGetInstanceHandle(), path_to_file_containing_icon_here, 0);
SetIcon(m_hIcon, TRUE);
SetIcon(m_hIcon, FALSE);
"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen
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how to color menu and toolbar?
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Do you mean instead of letting the OS do it?
"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen
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In my line of work I have times when I have to included existing code modules in with my new code. So happens this time I have an existing set of subroutines in a Fortran DLL that I need to access from my C++ Code. I can't get it to work following Microsoft's recommendations. Does anyone out there have any ideas the may work? For those of you who thing I should rewrite the Fortran in C++ it would take entirely too long to do that. I figure there are a few thousand lines of Fortran code.
Thanks,
George 
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BubbaGee wrote:
I can't get it to work...
Why not? What are the symptoms? Are the functions in the Fortran DLL exported? Are you importing them correctly in the C++ code?
"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen
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The functions in the Fortran have the following: !DEC$ ATTRIBUTES DLLEXPORT :: INITIA
and the C++ code has this: extern "C" {void INITIA(int,int,int,int);}
There are a few of these since I'm trying to access eight routines in the DLL.
Everything is compiling just fine I just get LNK2019 error messages for all the routines I'm trying to use in the C++ code.
George
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BubbaGee wrote:
I just get LNK2019 error messages...
This must not be VS6. Correct?
Are you sure you have the correct signature for the exported function?
"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen
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