conection with sql - C / C++ / MFC Discussion Boards

Re: How to invoke an application executable from DLL.?

Hamid_RT20-Jul-06 1:01

Hamid_RT

20-Jul-06 1:01

if you want to launch a application See http://www.codeproject.com/system/newbiespawn.asp[^]

whitesky

Re: How to invoke an application executable from DLL.?

ashokbngr20-Jul-06 21:10

ashokbngr

20-Jul-06 21:10

This is nice article but the thing is ...

the sequence is as follows

My Application --->MFC EXTENSION DLL -CALLING OPEN API in dll->another application should open as well as I want to commmunicate between these two applications.

I will be very thankfull to u and waitinfg for u r reply.

Thanks......

Ashok Reddy.

Re: How to invoke an application executable from DLL.?

ThatsAlok21-Jul-06 3:42

ThatsAlok

21-Jul-06 3:42

ashok3450 wrote:

My Application --->MFC EXTENSION DLL -CALLING OPEN API in dll->another application should open as well as I want to commmunicate between these two applications.

you have to interprocess communication between them!

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

cheers,
Alok Gupta
VC Forum Q&A :- I/ IV
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retrieve process parameter

rgminfo19-Jul-06 22:39

rgminfo

19-Jul-06 22:39

Hello,

Does anybody know if it's possible to retrieve the parameters given in the command line from another process ?

I'm trying to write a program which kill and restart a process with same parameters the user give at the first launch. I can have the proces id with EnumProcesses but i can't find how to retrieve the parameters.

Regards.

Re: retrieve process parameter

eusto19-Jul-06 22:57

eusto

19-Jul-06 22:57

If you have access to that process either log it's start args or write a routine that exports them to the process you use to kill the first one.

For a general process i don't think you can do that Frown | :(

Re: retrieve process parameter

Naveen19-Jul-06 23:16

Naveen

19-Jul-06 23:16

rgminfo wrote:
if it's possible to retrieve the parameters given in the command line from another process ?

check this

http://www.codeproject.com/threads/CmdLine.asp[^]

nave

Re: retrieve process parameter

rgminfo19-Jul-06 23:47

rgminfo

19-Jul-06 23:47

Thanks a lot, i'll try this .

conection with sql

ashish dogra19-Jul-06 22:36

ashish dogra

19-Jul-06 22:36

how to connect vc++ dialog based application with sql database
with the help of programming
as we connect mysql with real_connect.
thanks

Ashish Dogra
MCA
Noida

Re: conection with sql

eusto19-Jul-06 22:53

eusto

19-Jul-06 22:53

Which sql server? The type of the app does not really matter...But there are lots of ways you can connect to a sql database and lots of types of sql servers out there...you have to be more speciffic

Re: conection with sql

Hamid_RT20-Jul-06 1:02

Hamid_RT

20-Jul-06 1:02

You can articlesSql Server[^] maybe it is some helpful to you

whitesky

external dependencies

thathvamsi19-Jul-06 22:32

thathvamsi

19-Jul-06 22:32

hi all,
how to add external dependencies for a project?
I need to add a header file for the project as a external dependency. How to I add it?

Re: external dependencies

Cedric Moonen19-Jul-06 22:42

Cedric Moonen

19-Jul-06 22:42

Go in the project settings, C++ tab, general category and there, you have "Additional Include Directory". Put the path to the folder which contains the header file there.
Then, you can simply add the header to your project.

Another solution (much simpler) is simply to copy the header file into the folder which contains the sources of your program and add it to your project.

Cédric Moonen
Software developer

Charting control

Templates

Russell^'19-Jul-06 21:54

Russell^'

19-Jul-06 21:54

Hi,
Is it possible to use tests on the template typename(during compile, not in runtime)?
Something like:

template<typename T> class MyClass{<br />
...<br />
T m_Var;<br />
...<br />
void fun(){<br />
#if T==double<br />
....<br />
#else<br />
..<br />
#endif<br />
}<br />
}

Cheers,
Russell

Re: Templates

toxcct19-Jul-06 21:59

toxcct

19-Jul-06 21:59

no, because T is assigned at runtime, while #if is evaluated before the compilation

BTW, there's a mechanism called templates specializations, which allow you to design the templated class for a particuliar template parameter...

TOXCCT >>> GEII power

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

Re: Templates

Russell^'19-Jul-06 22:25

Russell^'

19-Jul-06 22:25

toxcct wrote:
T is assigned at runtime

I'm not sure, are you? templates are expanded during compilation.

Elseway have you got a good link to learn something on "templates specializations".

Thanks.

Cheers,
Russell

Re: Templates

toxcct19-Jul-06 22:35

toxcct

19-Jul-06 22:35

hum, ok, maybe not at runtime, but at compile time at least.

unfortunately, preprocessing directives are executed BEFORE the compilation... so, no chance to do it like this

TOXCCT >>> GEII power

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

Re: Templates

Russell^'19-Jul-06 22:47

Russell^'

19-Jul-06 22:47

yes, I know that I can't use preprocessing directives, It was only an sintax example: I'm asking exacly on the template sintax that it can be used.

Cheers,
Russell

Re: Templates

toxcct19-Jul-06 22:52

toxcct

19-Jul-06 22:52

then search for "template specializations"

TOXCCT >>> GEII power

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

Re: Templates

NrmMyth20-Jul-06 1:06

NrmMyth

20-Jul-06 1:06

toxcct wrote:
because T is assigned at runtime

Templates ane not .NET generics.
Compiler generates all specializations for used parameters.

template<typename T> class CLS;<br />
<br />
CLS<double> aaa;<br />
CLS<vector<int> > bbb;

At compile time, this will create double and vector<int> specializations for template.

Re: Templates

toxcct20-Jul-06 1:49

toxcct

20-Jul-06 1:49

WTF

what are you talking about ?

NrmMyth wrote:
Templates ane not .NET generics.

where have you seen me saying this ?

and what is the point in saying this to me ? do you criticise my answer ? do you suggest something better than what i did ? Unsure | :~

TOXCCT >>> GEII power

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

Re: Templates

NrmMyth20-Jul-06 3:37

NrmMyth

20-Jul-06 3:37

You gave an wrong information.
I think that everyone has a right to correct you.

Re: Templates

toxcct20-Jul-06 3:39

toxcct

20-Jul-06 3:39

NrmMyth wrote:
I think that everyone has a right to correct you.

of course !

but not only he doesn't explain where i was wrong but he also "repeats" words that i never said ! Frown | :(

where have you heard me saying that templates were .NET specifics ? Mad | :mad:

TOXCCT >>> GEII power

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

Re: Templates

NrmMyth20-Jul-06 5:29

NrmMyth

20-Jul-06 5:29

I aplogize for every mental pain I caused. Please accept it.

Re: Templates

toxcct20-Jul-06 5:31

toxcct

20-Jul-06 5:31

nevermind

TOXCCT >>> GEII power

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

Re: Templates [modified]

Oliver Anhuth19-Jul-06 22:05

Oliver Anhuth

19-Jul-06 22:05

template<typename T> class MyClass;

template<> class MyClass<double>
{
...
T m_Var;
...
void fun(){
// your double work
}
};

template<> class MyClass<int>
{
...
T m_Var;
...
void fun()
{
// your int work
}
};

-- modified at 4:08 Thursday 20th July, 2006

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