C / C++ / MFC

Jay034-Jul-06 7:09

4-Jul-06 7:09

I am working on a project which has .hh file extension

#include <RTI.hh>

What is the difference between .h files and .hh files
I also noticed how it is not from the same directory as the project files rather from the standard library because it is #include <....> rather than #include "...."

Does anyone know what is going on?
If anyone has worked with such files please help me out here.

Thanks,

Jay

-- modified at 13:16 Tuesday 4th July, 2006

Re: .hh extension header files

toxcct4-Jul-06 7:31

toxcct

4-Jul-06 7:31

basically, .h and .hh are the same things : C/C++ header files.

the fact that the file is included with <> indicated to the compiler to search the file in its (the compiler's) includes folder instead of looking in the project directory (this is the purpose of including with "").

TOXCCT >>> GEII power

[VisualCalc 3.0 updated ][Flags Beginner's Guide new! ]

Re: .hh extension header files [modified]

Jay034-Jul-06 7:42

Jay03

4-Jul-06 7:42

Thats exactly what I thought but why do we have two different extensions in the Standard library
#include <abc.h> and #include <def.hh> Is there any specific reason why we name it that way??????

Thanks,

Aravinth

-- modified at 13:43 Tuesday 4th July, 2006

Re: .hh extension header files

toxcct4-Jul-06 7:43

toxcct

4-Jul-06 7:43

i don't really know... maybe to explicitely differ between C and C++ headers... it's quite similar to .hpp files.

TOXCCT >>> GEII power

[VisualCalc 3.0 updated ][Flags Beginner's Guide new! ]

Re: .hh extension header files

Jay034-Jul-06 8:04

Jay03

4-Jul-06 8:04

Im pretty sure Zac Howland knows. He works with RTI (Run time Infrastructure)

thanks for your help TOXCCT

Cheers,
Jay Smile | :)

Re: .hh extension header files

toxcct4-Jul-06 8:07

toxcct

4-Jul-06 8:07

Jay03 wrote:
Im pretty sure Zac Howland knows

maybe,but this is not specific to RTI AFAIK... Wink | ;)

Jay03 wrote:
thanks for your help TOXCCT

welcome.

TOXCCT >>> GEII power

[VisualCalc 3.0 updated ][Flags Beginner's Guide new! ]

Re: .hh extension header files

Jun Du4-Jul-06 9:11

Jun Du

4-Jul-06 9:11

Sometimes, a header is named .hh or .hpp to emphasize it's a C++ (not C) header.

Best,
Jun

Re: .hh extension header files

Jay034-Jul-06 9:39

Jay03

4-Jul-06 9:39

But can you call upon a C header when you are working with a C++ Project???

Thanks,
Jay Confused | :confused:

Re: .hh extension header files

Jun Du4-Jul-06 9:46

Jun Du

4-Jul-06 9:46

Sure. Compilers don't distinguish C from C++ any more.

Best,
Jun

Re: .hh extension header files

Jay034-Jul-06 9:57

Jay03

4-Jul-06 9:57

Does this mean that .h files are definately a C HEADER ?

Re: .hh extension header files

Joe Woodbury4-Jul-06 11:16

Joe Woodbury

4-Jul-06 11:16

No. The standard does not dictate an extension; the use of .h is by convention. The best you can say is that a file with a .h extension is probably a C or C++ header file.

Anyone who thinks he has a better idea of what's good for people than people do is a swine.
- P.J. O'Rourke

Re: .hh extension header files

Jörgen Sigvardsson4-Jul-06 12:04

Jörgen Sigvardsson

4-Jul-06 12:04

Some people (mostly unix folks), like to name their C++ files with a .cc prefix. Similarly, they use .hh prefix for C++ header files. There are also those to use .C and .H for C++ files, as the unix file system is case sensitive.

I bet someone in your project is or was a unix programmer. Smile | :)

--
A Stern Warning of Things to Come

i need project used thes ocx name data repeater

go2go14-Jul-06 6:50

go2go1

4-Jul-06 6:50

i need any cood use thes data repeater pleas send to my email
ahm_goma2002@yahoo.com Big Grin | :-D

Re: i need project used thes ocx name data repeater

toxcct4-Jul-06 6:53

toxcct

4-Jul-06 6:53

go2go1 wrote:
need any cood use ...

i need, i need i need !!!

go2go1 wrote:
need any cood use thes data repeater pleas send to my email

where's the punctuation man ?

go2go1 wrote:
ahm_goma2002@yahoo.com

noway

forums are to share. go die with your email Suspicious | :suss:

TOXCCT >>> GEII power

[VisualCalc 3.0 updated ][Flags Beginner's Guide new! ]

dialogbox with textbox

Desmo164-Jul-06 6:33

Desmo16

4-Jul-06 6:33

Hi,

I have a dialogbox containing a textbox.
In order to set the content of the textbox i do.
dialogbox temp; (dialog is the name of the class i added)
temp.textbox.SetWindowText("text"); (textbox is the name of the textbox)
temp.DoModal();

i have problems with the line

temp.textbox.SetWindowText("text");

even if when i use that line for textbox in the parent form
there's no problem.

Where i go wrong ?

Another thing, if i wanna raise a non-modal dialogbox
what should i write instead of temp.DoModal() ?

Thanx,
Desmo16.

Re: dialogbox with textbox

Justin Tay4-Jul-06 6:46

Justin Tay

4-Jul-06 6:46

You can't call SetWindowText() on a window that hasn't been created yet. Set the text in OnInitDialog() in your dialog.

If you want a modeless dialog use Create() instead of DoModal().

Re: dialogbox with textbox

Desmo164-Jul-06 6:58

Desmo16

4-Jul-06 6:58

I haven't an OnInitDialog as i have in the parent window.
Maybe i go wrong in adding the dialog box.
I add a resource whose kind is IDD_DIALOGBAR,
then i add a class called xxx of kind IDD_DIALOGBAR
having CDialog as baseclass, but there's no OnInitDialog method.

Is that the correct way ?
Generally which is the procedure to create another form ?

Thank you so much,
David.

Re: dialogbox with textbox

Justin Tay4-Jul-06 7:32

Justin Tay

4-Jul-06 7:32

You are supposed to override OnInitDialog() yourself if you need to. Go to the Class View and select your new dialog. Right click and select properties. In VC7.1, along the bar there is a button labelled Overrides. Find OnInitDialog, click on the drop list and add the function.

Re: dialogbox with textbox

Desmo164-Jul-06 22:25

Desmo16

4-Jul-06 22:25

It worked great ! Thanx !

Re: dialogbox with textbox

Desmo164-Jul-06 22:35

Desmo16

4-Jul-06 22:35

Another little question:

the string i use to write in the textbox show all in 1 line
and there is a strange simbol where it should go to a new line.
In the strings i tryed to use "\n" and also "\n\r" to obtain a newline,
and in the MessageBox it works.

Any suggestion ?

Re: dialogbox with textbox

Justin Tay5-Jul-06 1:21

Justin Tay

5-Jul-06 1:21

And what is this "textbox"? A static text control? An edit control? A rich edit control? A custom control? If you are using an edit control you need one that is set to multiline. If you want to type in one that accepts the enter key, set it to want return.

The standard line endings for windows is "\r\n" so use that when you want a line ending on a windows system.

Re: dialogbox with textbox

Desmo165-Jul-06 5:29

Desmo16

5-Jul-06 5:29

i was meant to say an edit control.
anyway, the mistake was mine, 'cause i wrote
\n\r instad of \r\n. Sorry Smile | :)

template metaprogramming question

FocusedWolf4-Jul-06 6:14

FocusedWolf

4-Jul-06 6:14

I was reading about this compile-time computation stuff and quickly found a limitation where according to c++ standard, and vs2005 restrictions Hmmm | :|

, that you can only pass an int as a parameter... so all these metaprograms would be taking in either typename's or ints in the <>'s and returning ints as with enum

<br />
template<int N> <br />
struct Pow3 <br />
{ <br />
	enum { result=3*Pow3<N-1>::result }; <br />
}; <br />
<br />
template<> <br />
struct Pow3<0> <br />
{ <br />
	enum { result = 1 }; <br />
}; <br />

or static const int

<br />
template<int N> <br />
struct Pow2 <br />
{ <br />
    static const int result = 3*Pow3<N-1>::result; <br />
}; <br />
<br />
template<> <br />
struct Pow2<0> <br />
{ <br />
	static const int result = 1;<br />
}; <br />

My question is i've seen code that used a function to accept parameters of other types...would these be compile-time initialized/optimized to?

<br />
template <int value, typename returnType><br />
struct DividePi<br />
{<br />
	static returnType Result(float SomeFloat)<br />
	{<br />
		return Pi / value;<br />
	}<br />
};<br />
<br />
template <typename returnType><br />
struct DividePi <0, returnType><br />
{<br />
	static returnType Result(float SomeFloat)<br />
	{<br />
		return 0;<br />
	}<br />
};<br />

Re: template metaprogramming question

Sarath C4-Jul-06 6:47

Sarath C

4-Jul-06 6:47

this will help you[^]

SaRath.

"It is your attitude, not your aptitude, that determines your altitude - Zig Ziglar."

My Blog | Understanding State Pattern in C++

Draw on a control

Daniel Kanev4-Jul-06 5:48

Daniel Kanev

4-Jul-06 5:48

If I create an application using CFormView, not CView, and do not want to draw on the form directly, where can I draw on? Is there a visual control for that?

Thank you!

modified 9-Mar-17 17:20pm.

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