Ancient Newbie Can't Find Class Wizard - C / C++ / MFC Discussion Boards

MFC Newbie - need help to get started

TheSatori31-Mar-05 7:45

TheSatori

31-Mar-05 7:45

Hello there Smile | :)

I am new to MFC, and to learn it, I am following a tutorial which can be found at:

http://www.functionx.com/visualc/Lesson01.htm

(amongst other places)

When I compile the file, I get the following error:

LNK1561: entry point must be defined.

I am using Windows XP Professional, and programming with Visual Studio .NET 2003. I created an empty C/C++ project ("Empty Project(.NET)"), and added the single file specified below.
I have set the following properties for my project (accessed via. Project -> [ProjectName] Properties):

General:
- Use of MFC: Use MFC in a shared DLL

C/C++ -> Precompiled headers:
- Create/use precompiled headers: Not Using precompiled headers

I did this due to some other errors which occurred when I did not make these other alternations. I google-d the error-messages to know what to change in my project properties.

However, this problem completely eludes me. I read somewhere that it could be because there is no main() method (makes sense - the app won't know where to start), but when I added it, the program compiled, and ran, but all it did was to pop up a console window for about 5 seconds, and then program exited with no errors. The main I added looks like this:

int main() {<br />
return 1;<br />
}

(since there is a global variable theApp which represents the Frame/application (see below), it gets initialized before "return 1" occurs).

I am using the below code for my application (and nothing else):

CExerciseApp.cpp

#include <afxwin.h><br />
<br />
class CExerciseApp : public CWinApp<br />
{<br />
public:<br />
	virtual BOOL InitInstance();<br />
};<br />
<br />
class CMainFrame : public CFrameWnd<br />
{<br />
public:<br />
	CMainFrame();<br />
};<br />
<br />
CMainFrame::CMainFrame()<br />
{<br />
	Create(NULL, "MFC Fundamentals");<br />
}<br />
<br />
BOOL CExerciseApp::InitInstance()<br />
{<br />
	m_pMainWnd = new CMainFrame;<br />
	m_pMainWnd->ShowWindow(SW_NORMAL);<br />
<br />
	return TRUE;<br />
}<br />
<br />
CExerciseApp theApp;

I need this to work to continue on with the example, and really start learning MFC - help Sniff | :^)

Re: MFC Newbie - need help to get started

Christian Graus31-Mar-05 13:33

Christian Graus

31-Mar-05 13:33

Always start an MFC application with a wizard. Hand coding it is a disaster waiting to happen.

MFC apps tend to use precompiled headers. Learn to use them for now, decide later if you don't want them.

Christian

I have several lifelong friends that are New Yorkers but I have always gravitated toward the weirdo's. - Richard Stringer

function for size of file

smriti12331-Mar-05 7:42

smriti123

31-Mar-05 7:42

hello friends
i m using vc++, so plz tell me function to get size of a file(text file)
bye

Re: function for size of file

Chris Meech31-Mar-05 8:22

Chris Meech

31-Mar-05 8:22

You can try the static CFile::GetStatus method and one of the status members is the file size.

Chris Meech

I am Canadian. [heard in a local bar]

Gently arching his fishing rod back he moves the tip forward in a gentle arch releasing the line.... kersplunk [Doug Goulden]

Nice sig! [Tim Deveaux on Matt Newman's sig with a quote from me]

Re: function for size of file

David Crow31-Mar-05 9:36

David Crow

31-Mar-05 9:36

Looking into my crystal ball I see...GetFileSize() and GetFileSizeEx().

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

Re: function for size of file

Blake Miller1-Apr-05 5:10

Blake Miller

1-Apr-05 5:10

And also GetFileAttributesEx, in case you need to know more about the file all in a single function call.

Re: function for size of file

David Crow1-Apr-05 5:21

David Crow

1-Apr-05 5:21

Blake Miller wrote:
And also GetFileAttributesEx, in case you need to know...

Yes, I'm aware of it. Thanks.

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

Ancient Newbie Can't Find Class Wizard

dhamilton31-Mar-05 7:36

dhamilton

31-Mar-05 7:36

After many years away from MFC, I need to develop a simple ActiveX control whose primary purpose is to act as a container for other ActiveX controls.

In the days of VC++ 6, the Class Wizard, bad as it was, provided an automated way to add properties, methods and events to a control by automatically generating the needed .odl and other changes. I find no such capability in the VC++ 7.0 IDE. I dimly remember enough Ole to manually edit the files, but this seems like an incredible hardship for what should be a simple task.

What am I missing? An ActiveX tutorial for VC++ 7.0 would be fantastic. The old favorite "Circ" has not been updated to be of much value in Visual Studio .Net.

A pointer to a usable reference on the standard messages and maps would also be extremely helpful.

I am in desperate straights because I bid this job stupidly assuming that MFC had kept pace with C#. Any help would be greatly appreciated.

Regards,

David Hamilton

Re: Ancient Newbie Can't Find Class Wizard

Nemanja Trifunovic31-Mar-05 9:03

Nemanja Trifunovic

31-Mar-05 9:03

Look here[^] for answers to your questions.

My programming blahblahblah blog. If you ever find anything useful here, please let me know to remove it.

Re: Ancient Newbie Can't Find Class Wizard

dhamilton31-Mar-05 9:19

dhamilton

31-Mar-05 9:19

Nemanja,

Thank you. It almost had to be simple. I have found that almost everything in software development is easy once you know the "secret." Finding Microsoft "secrets" is often nearly impossible.

I have had the good fortune of helping others over the course of my career, and it gives me a lasting good feeling. I hope you enjoy that feeling now.

Regards,

David Hamilton

External C++ Scripts

NewbieStats31-Mar-05 7:20

NewbieStats

31-Mar-05 7:20

I know its possible with VB but is it possible with C++?

Have a part in the program where it allows the user to write what he wants in a text and itll implement it into the program?

Not like a configuration where you allow the user to write name/password so forth... But a full blown C++ code written in a text file that the program reads and uses it at the certain point of the program...

Say; Having a Client/Server program (a bot), and having the user write all the commands in C++ he wants in a text, allowing him to delete some, and add some commands... How would this be allowed?

/* Just a Human Trying to Live in a Computers World. */

Re: External C++ Scripts

C^hris L^osinger31-Mar-05 8:36

C^hris L^osinger

31-Mar-05 8:36

NewbieStats wrote:
Have a part in the program where it allows the user to write what he wants in a text and itll implement it into the program?

you'd either have to include a C++ compiler and linker or use a C++ interpreter like CINT[^].

then you'll have to set up an interface so that your program and the external code can communicate. that could be difficult (or easy), depending on what you want these external code chunks to do. if it's compiled code, you're probably looking at a very tough bit of work. interpreted code is probably easier, since it'll be 'running' inside your EXE.

but, if you're asking your users to write C++ in order to use your program, you might as well ask them to go all the way and simply build DLLs which implement certain interfaces that your program can use via LoadLibrary - plugins, in other words.

Image Toolkits | Image Processing | Cleek

Re: External C++ Scripts

toxcct31-Mar-05 19:59

toxcct

31-Mar-05 19:59

C++ is compiled, not interpreted...

I don't think this is possible to do, unless (as it has been said) you add a compiler

TOXCCT >>> GEII power
[toxcct][VisualCalc]

Passing arguments to a worker thread function

gecool31-Mar-05 7:04

gecool

31-Mar-05 7:04

Hi everyone:->. I need to pass some arguments to a worker thread function (VC++), but i don't know how to do that ... the MSDN says : UINT MyControllingFunction( LPVOID pParam ), but I need to pass to MyControllingFunction other parameters too. If anyone can help, please do it. Smile | :)

Re: Passing arguments to a worker thread function

Chris Meech31-Mar-05 8:17

Chris Meech

31-Mar-05 8:17

The LPVOID pParam should be set to point to a structure that contains all of the parameters that you wish to pass. Is this what you need? Smile | :)

Chris Meech

I am Canadian. [heard in a local bar]

Gently arching his fishing rod back he moves the tip forward in a gentle arch releasing the line.... kersplunk [Doug Goulden]

Nice sig! [Tim Deveaux on Matt Newman's sig with a quote from me]

Re: Passing arguments to a worker thread function

ThatsAlok31-Mar-05 17:58

ThatsAlok

31-Mar-05 17:58

I demonstrate by passing your Class pointer to your Worker thread.

Let your class be CMyClass and Worker thread function something like this

[vccode]
 // Thread function
 UINT <code>MyControllingFunction</code>( LPVOID pParam );

 // Class
  void CMyClass::StartThread();
  {
    AfxBeginThread(&<code>MyControllingFunction</code>,(LPVOID)<code>this</code>);

  }

 // Actual Defination of Worker Thread
  UINT MyControllingFunction( LPVOID pParam )
  {
   CMyClass *<code>pMainClass</code>=(CMyClass*)<code>pParam</code>;
   //do something with pMainClass.......
 
   //end thread
   return 0;
  }

[Vote One Here, Complete my Survey....]

Alok Gupta
visit me at http://www.thisisalok.tk

"I ~~Think~~ Believe this Will Help"

Question about CFileDialog

Fernando A. Gomez F.31-Mar-05 6:33

Fernando A. Gomez F.

31-Mar-05 6:33

Hello all. I have a button that loads a file dialog, CFileDialog. I'm trying that the user enters a PATH name rather than a FILE name. However, the CFileDialog only allows me to enter file names. ¿What do I have to do?

Here's what I'm doing, rather simple.

<br />
CFileDialog wndDialog(<br />
		TRUE,<br />
		NULL,<br />
		NULL,<br />
		OFN_PATHMUSTEXIST | OFN_HIDEREADONLY,<br />
		NULL,<br />
		this<br />
	);<br />
	wndDialog.DoModal();<br />
<br />
	m_strDestPath = wndDialog.GetPathName();<br />
	SetDlgItemText(IDC_NEWTRAN_DESTPATH, m_strDestPath);<br />
<br />

Regards,
K.K.

Only the good dies young...

Re: Question about CFileDialog

C^hris L^osinger31-Mar-05 6:58

C^hris L^osinger

31-Mar-05 6:58

try the ::ShBrowseForFolder function. that's the standard Windows browse for folder dialog.

Image Toolkits | Image Processing | Cleek

Re: Question about CFileDialog

NewbieStats31-Mar-05 7:31

NewbieStats

31-Mar-05 7:31

http://www.mindcracker.com/mindcracker/c_cafe/mfc/filedlg.asp[^]

Does that Help?

/* Just a Human Trying to Live in a Computers World. */

CXListCtrl questions

Kyle P31-Mar-05 6:25

Kyle P

31-Mar-05 6:25

I am tring to use the ToolTips with this tool and would like a multi-line tool tip. You Set the Tooltip with a String and I am trying to embed \r\n and such in the CString to create a larger Text Box of area for the ToolTip. My goal is that a person would not have to go to a next screen to see all the data but get an idea of what is there from a current screen. Any help

thank you

Kyle

Button Creation at Runtime....

blinkered31-Mar-05 5:41

blinkered

31-Mar-05 5:41

Bit of a Newbie to this so bare with me...

In my Visual C++ 6 Project, I have a Form View whereby I wish to create another button dependant on results from a Database. In the OnInitialUpdate() of the form I am trying to use the Create Function - but can only generate a debug assertion Failure. Is have used this line of code:

m_Button.Create("My button", WS_CHILD|WS_VISIBLE|BS_PUSHBUTTON,
CRect(10,10,100,30), this, 1);

Am I doing anything obviously wrong?

Any help would be appreciated...

Re: Button Creation at Runtime....

Alexander ^M.,31-Mar-05 12:18

Alexander ^M.,

31-Mar-05 12:18

Place code like that in OnInitDialog.

Don't try it, just do it! Wink | ;-)

Re: Button Creation at Runtime....

blinkered31-Mar-05 21:25

blinkered

31-Mar-05 21:25

Thanks - that works a treat. Next question though, how can I create an OnClick Event Handler for this button that will distinguish between the different Buttons I have created from the original Button object?

Re: Button Creation at Runtime....

ThatsAlok31-Mar-05 18:28

ThatsAlok

31-Mar-05 18:28

blinkered wrote:
m_Button.Create("My button", WS_CHILD|WS_VISIBLE|BS_PUSHBUTTON,
CRect(10,10,100,30), this, 1);

it working fine here in my test project,what ASSERTION notice are you getting.Second put a valid ID of button instead of Putting ID=1

[Vote One Here, Complete my Survey....]

Alok Gupta
visit me at http://www.thisisalok.tk

"I ~~Think~~ Believe this Will Help"

MFC dll and mysql

ns31-Mar-05 5:19

31-Mar-05 5:19

I have an mFC dll into which I want to use mysql. So in the projrct settings c++ tab in project options i put:

"C:\mysql\mysql-noinstall-4.1.10-win32\mysql-4.1.10-win32\include" /

but the compiler says:

Command line warning D4002 : ignoring unknown option '/'<br />
Command line warning D4024 : unrecognized source file type 'C:\mysql\mysql-noinstall-4.1.10-win32\mysql-4.1.10-win32\include', object file assumed<br />
Command line warning D4027 : source file 'C:\mysql\mysql-noinstall-4.1.10-win32\mysql-4.1.10-win32\include' ignored

Project options now look like:
/nologo /MT /W3 /GX /O2 /D "WIN32" /D "NDEBUG" /D "_WINDOWS" /D "_WINDLL" /D "_MBCS" /D "_USRDLL" /Fo"Release/" /Fd"Release/" /FD / "C:\mysql\mysql-noinstall-4.1.10-win32\mysql-4.1.10-win32\include" /c

used to look like the foll before i put in mysql, and it compiled fine

Thanks for helping,
sb
/nologo /MT /W3 /GX /O2 /D "WIN32" /D "NDEBUG" /D "_WINDOWS" /D "_WINDLL" /D "_MBCS" /D "_USRDLL" /Fo"Release/" /Fd"Release/" /FD /c

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