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1slipperyfish wrote: should i have animalClass.hpp dogClass.hpp, catClass.hpp, declaring the classes and have a seperate animalObj.cpp
you need header files (.h, .hpp) if you want to use the classes in other .cpp files so they can be #include < ...>
If the class is defined in a cpp file the visibility of it is limited to (not sure) that file maybe.
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thanks for the reply led mike 
i have rewritten my classes into baseClass.hpp, CatClass.hpp, and DogClass.hpp with farms.cpp initialising the functions and having main()
i had a lot of trouble compiling as it kept saying i had already declared my Mammal class in baseClass however if you add [code]#ifndef BASE_CLASS_HPP
#define BASE_CLASS_HPP[/code] at the top of baseClass.hpp and [code]#endif[/code] at the bottom it works.
you all probably already new that but i've just wasted 2 1/2 hours of my life learning that the hard way
thanks again
paul
if ignorance is bliss then knock the smile off my face!!!
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MAybe I shouldn't answer this after all I work as a MainFrame Assembler Dino programmer
I think think if you declare it in the code/obj/cpp you just have to qualify the method with Class name e.g. DogClass :: dogmethod saying that this dogmethod is releated to the dogalass Class
Trying to get into the future.....
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thanks
paul
if ignorance is bliss then knock the smile off my face!!!
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Hi there. I'm pretty new to coding, I'm trying to (slowly but surely) design a program to receive data from a dyno that I'm fabricating. I'm guessing I'd best use the serial port, from what I read using USB 2.0 is pretty much harder. I'd be putting together a microsystem using either a microprocessor or my own electronics. I'd have to transmit data like engine rpm, air/fuel ratio, dyno drum speed etc. Is there a way to read analogue signals with a pc or can it only use digital signals?
If anyone has some good links or books on communicating with the outside world using a pc, I'd love to have some. Thanks a bunch!
Brian
Yup, I'm a NEWB
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You may want to post this on the hardware board[^].
Mark
Mark Salsbery
Microsoft MVP - Visual C++
![Java | [Coffee]](https://codeproject.freetls.fastly.net/script/Forums/Images/coffee.gif)
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Alrighty, thanks for the quick reply!
Brian
Yup, I'm a NEWB
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We are using the February 2006 version of DirectX. When we insert the following line:
#define new DEBUG_NEW
we get the following errors from the Directx Modules:
c:\program files\microsoft directx sdk (february 2006)\include\d3dx9math.h(392)
: error C2059: syntax error : 'string'
c:\program files\microsoft directx sdk (february 2006)\include\d3dx9math.h(392)
: error C2091: function returns function
c:\program files\microsoft directx sdk (february 2006)\include\d3dx9math.h(392)
: error C2802: static member 'operator new' has no formal parameters
c:\program files\microsoft directx sdk (february 2006)\include\d3dx9math.h(393)
: error C2059: syntax error : 'string'
c:\program files\microsoft directx sdk (february 2006)\include\d3dx9math.h(393)
: error C2090: function returns array
c:\program files\microsoft directx sdk (february 2006)\include\d3dx9math.inl(987
) : error C2761: 'void *(__cdecl *_D3DXMATRIXA16::operator new(void))(size_t)' :
member function redeclaration not allowed
c:\program files\microsoft directx sdk (february 2006)\include\d3dx9math.inl(987
) : fatal error C1903: unable to recover from previous error(s); stopping compil
ation
How can we take advantage of the DEBUG_NEW capability and also get around these errors?
BRC
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Defining DEBUG_NEW after any included header files has always worked for me.
Mark
Mark Salsbery
Microsoft MVP - Visual C++
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Ok - I'll try that. We wanted to define the DEBUG_NEW option in a general header file, but we will include it later on.
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hi all
i am making mfc activex control. i want to assign short cut keys to buttons placed on dialog box.
pls help me what should i do
thanx
ggggggggggg
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maulesh bhojani wrote: i want to assign short cut keys to buttons placed on dialog box.
Are you referring to mnemonics?
"A good athlete is the result of a good and worthy opponent." - David Crow
"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne
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no. i m new to MFC if possible describe the same.
thanx
mbho
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Then I'm a bit confused as to what you are after.
Keyboard shortcuts
Accelerator table
Keyboard mnemonics
"A good athlete is the result of a good and worthy opponent." - David Crow
"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne
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hi all,
When "ESC" key Or "ENTER" key is pressed on the dialog, the dialog box is closed. What do i do to prevent this from happening.
I want to force the user to press the close button on my dialog to close the application.
Thanks a lot for all the help extended to me by taking all the trouble away from me.
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wajape wrote: What do i do to prevent this from happening.
Read the FAQ.
"A good athlete is the result of a good and worthy opponent." - David Crow
"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne
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You can insert a button to dialog and then use of OnOK() or OnCancel() for exit.
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You have to write the following in the dialog class (say CMyDlg):
void OnOK() { }<br />
void OnCancel() { }
Also have to map WM_CLOSE and in the mapped function do the following:
void CMyDlg::OnClose()<br />
{<br />
EndDialog( 0 );<br />
}
- NS -
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Does anybody know by chance how to change the file attributes of a shortcut in a folder? CFile::Get/SetStatus and GetFileAttributes/SetFileAttributes don't work.
Thanks in advance
MS
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Manfred Staiger wrote: CFile::Get/SetStatus and GetFileAttributes/SetFileAttributes don't work.
Why not? What are they (not) doing?
This works fine for a shortcut that is on my desktop:
void main( void )
{
char szFile[] = "...\\Desktop\\Survivor.url";
SetFileAttributes(szFile, GetFileAttributes(szFile) | FILE_ATTRIBUTE_READONLY);
}
"A good athlete is the result of a good and worthy opponent." - David Crow
"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne
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It works!
I didn't respect that the windows explorer hides the file extension .lnk even if you haven't checked the "hide file extensions" property. So I simply passed the incomplete filename to SetFileAttributes.
Anyway, thank you for responding.
MS
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Hello Friends,
I m back with another probelm. I need the call the Windows procedure(WindowProc) of class MainFrame.cpp from the file FileChangeNotification.h(another file). ya ya ya !!! I know I have to use SendMessage() Function to call WindowProc. But for that i need the handle of that MainFrame Class from MainFram.cpp.
So please Tell me how to get the handle of that class in another window.
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Use AfxGetMainWnd.
Prasad
MS MVP - VC++
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Gaurang Shah 033 wrote: So please Tell me how to get the handle of that class...
Classes don't have handles, windows do.
To get a pointer to the active main window, use GetMainWnd() or AfxGetMainWnd().
"A good athlete is the result of a good and worthy opponent." - David Crow
"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne
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Better use PostMessage() because it isnt blocking. There is a Afx... Function to get the Window.
PS: the class is build around the handle. 
Greetings from Germany
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