WinExec - C / C++ / MFC Discussion Boards

jaycush21-Jul-05 4:24

21-Jul-05 4:24

Answered my own question. If anyone else has similar probs, the devcon example in the DDK shows how to restart a device.

killing dll

Ann6620-Jul-05 6:45

Ann66

20-Jul-05 6:45

Hi,
I am doing a dialog based win32 application.While I exit my app I want to kill a running dll say some.dll....
How should I do this.
Thanks a lot in advance.

Re: killing dll

Marc Soleda20-Jul-05 7:03

Marc Soleda

20-Jul-05 7:03

Kill?
If you've used LoadLibrary then you can released it using FreeLibrary.

Marc Soleda.

... she said you are the perfect stranger she said baby let's keep it like this... Tunnel of Love, Dire Straits.

Re: killing dll

Ann6620-Jul-05 8:07

Ann66

20-Jul-05 8:07

Thanks for the reply...but my problem here is the dll is not releasing my app when I close it. So when I exit from my app though the dialog is closed, I could still see in the task manager that my .exe process still running. The dll is holding it somewhere I could'nt find.So I want to force the dll to stop running. I tried the freelibrary() as you suggested but still does'nt work...
pls suggest.

Re: killing dll

David Crow20-Jul-05 9:34

David Crow

20-Jul-05 9:34

Ann66 wrote:
I tried the freelibrary() as you suggested but still does'nt work...

FreeLibrary() does more than just unload a DLL. In reality, it decrements the reference count of the DLL. Only when the reference count reaches zero does the DLL get unmapped from your process' address space. The fact that the DLL is still open after your EXE has terminated is an indication that your EXE has possibly created another thread which incremented the reference count of the DLL. Can you confirm/deny this?

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

Re: killing dll

Ann6620-Jul-05 11:06

Ann66

20-Jul-05 11:06

Actually I dont know much about what's going on inside the dll.I am starting the dll with loadlibrary() and using some of the api functions defined in the dll.So I want to force the dll to stop when I close my app...

Re: killing dll

David Crow21-Jul-05 2:34

David Crow

21-Jul-05 2:34

Ann66 wrote:
So I want to force the dll to stop when I close my app...

As has already been suggested, FreeLibrary() is used for this. If this does not work, then something else is amuck here.

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

WinExec

Usman Tasleem Akshaf20-Jul-05 6:07

Usman Tasleem Akshaf

20-Jul-05 6:07

i want to know is there any function or system call which is generalized and can run any file given as a parameter.i have tried WinExec("c:/one.exe",SW_SHOW) . This system call works perfect for executable files but when i try to give a zip file as its first parameter it doesn't execute it.Is there any system call which is generalized one and can run any file .

Be FaithFull To Your Work.

Re: WinExec

berndg20-Jul-05 6:15

berndg

20-Jul-05 6:15

You're looking at ShellExecute(). Or, you should be.

Re: WinExec

Usman Tasleem Akshaf20-Jul-05 6:39

Usman Tasleem Akshaf

20-Jul-05 6:39

currently i am sitting on a computer which doesn't have vs 6.so you just tell me does ShellExecute() run any type of file and is it a generalized one and what is the description of its parameters.Thanks

Be FaithFull To Your Work.

Re: WinExec

Trollslayer20-Jul-05 6:46

Trollslayer

20-Jul-05 6:46

It is the same as the 'Open' item on the menu if you right click on a file, it uses the default action on that file type.
I have used this on Word documents and Excel spreadsheets.

Elaine Rose | [Rose]

The tigress is here Big Grin | :-D

Re: WinExec

Usman Tasleem Akshaf20-Jul-05 6:52

Usman Tasleem Akshaf

20-Jul-05 6:52

Thanks buddy.BUT WHAT ABOUT THE PARAMETER LIST.DOES IT TAKE JUST PATH OF FILE OR SOMETHING ELSE AS WELL.

Be FaithFull To Your Work.

Re: WinExec

Trollslayer20-Jul-05 10:26

Trollslayer

20-Jul-05 10:26

It's in the documentation,go to Help ->Index.

The tigress is here Big Grin | :-D

Re: WinExec

berndg20-Jul-05 6:50

berndg

20-Jul-05 6:50

You may not have VS, but you have the Internet[^].

ShellExecute performs verbs on an object. This can be "open" (verb) abc.zip (object), or "print" zorro.doc - anything that is registered within the local system. Your application need not even know what the application is; and it will automatically use the user's default application. For instance, "edit" readme.txt will laucnh that file in the user's preferred editor for txt file.

Re: WinExec

Usman Tasleem Akshaf20-Jul-05 6:56

Usman Tasleem Akshaf

20-Jul-05 6:56

AS SOON AS I HAVE POSTED MY LAST POST ,I REALISED MY MISTAKE AND WENT STRAIGHT TO THE LINK YOU HAVE GIVEN.SORRY AND THANKS .

Be FaithFull To Your Work.

Re: WinExec

toxcct20-Jul-05 20:44

toxcct

20-Jul-05 20:44

Usman Tasleem Akshaf wrote:
currently i am sitting on a computer which doesn't have vs 6.

i don't see where is the problem... MSDN have an inline web site...

the url for Visual C++ is www.msdn.microsoft.com/visualc

there, search for ShellExecute()[^]...

not so hard to do by yourself isn't it ? :->

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

Multiple FIles to be read from 1 directory in C++

LCI20-Jul-05 6:04

LCI

20-Jul-05 6:04

My C++ application has to read X amount of files from a directory to parse each one and pick out certain data. The file names of these files are variable and i have no control over them, so i would just want to read every file regardless of name. I would read a file, load it into my XML DOM parser , grab data , then close the file and move on to the next. If there are 50 files in the directory, i want to be able to read all 50 and pull out certain pieces of text from all 50.

Is there a straightforward way to do this using C++ or can anyone point me to some sample code, cause i know there has to be samples on this somewhere.

Thanks..

Re: Multiple FIles to be read from 1 directory in C++

Trollslayer20-Jul-05 6:43

Trollslayer

20-Jul-05 6:43

Try _findfirst, findnext and _findclose.
There are wide version of these functions as well.

Elaine Rose | [Rose]

The tigress is here Big Grin | :-D

Re: Multiple FIles to be read from 1 directory in C++

LCI20-Jul-05 7:02

LCI

20-Jul-05 7:02

What would be an example of how to use these methods if my filename is unknown and i just want to open all files one by one in a specific directory?

Re: Multiple FIles to be read from 1 directory in C++

David Crow20-Jul-05 8:41

David Crow

20-Jul-05 8:41

Use "*.*" pattern.

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

return an array

Halawlaws20-Jul-05 5:37

Halawlaws

20-Jul-05 5:37

how can i return an array?

/\|-||\/|/\|)

Re: return an array

toxcct20-Jul-05 5:41

toxcct

20-Jul-05 5:41

char* GiveArray() {
    char* cTab = new char[10];    // creates an array of 10 characters
    return cTab;
}
 
void main(void) {
    char* Array = GiveArray();
    Array[0] = /*...*/;
}

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

Re: return an array

Halawlaws20-Jul-05 20:21

Halawlaws

20-Jul-05 20:21

thx

/\|-||\/|/\|)

Re: return an array

Kevin McFarlane20-Jul-05 10:15

Kevin McFarlane

20-Jul-05 10:15

If you're using C++ and not C then use a vector instead of an array.

Kevin

Re: return an array

toxcct20-Jul-05 20:28

toxcct

20-Jul-05 20:28

Kevin McFarlane wrote:
If you're using C++ and not C then use a vector instead of an array.

i don't agree. there is not only ONE solution to a problem. vector certainly have some advantages, but they are surely not the best is other cases.
all depends on what you need to do.

vectors are types of lists that are optimized when their size/number of elements vary more than "a few times"...

but they are not the only container to be used ; there is vector, list, stack...

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

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