C / C++ / MFC Discussion Boards

gamitech15-Dec-04 1:17

15-Dec-04 1:17

you can do it in many different ways.
one would be mutex objects which can be most efficient.
in one of the prg which will run first the fiorst line should be;
CreateMutex(NULL,TRUE,"Runnig");
now the second prg;
should enter in a cycle
while(CreateMutex(NULL,TRUE,"Running")!=ERROR_ALREADY_EXISTS)
{
Sleep(1);
}
or the other way around.
Try it

gabby

Re: Checking if an exe file is running

Member 158681215-Dec-04 2:14

Member 1586812

15-Dec-04 2:14

Thanks for the sugestions I am current executing the second file using this

WinExec("Application.exe",SW_SHOWMAXIMIZED);

Is there any other way I can check to see if its running without using Mutex as I have had lots of problems with them in the past Eek! | :eek:

Re: Checking if an exe file is running

Blake Miller15-Dec-04 4:00

Blake Miller

15-Dec-04 4:00

Check this out in MSDN:
Platform SDK: Performance Monitoring : Enumerating All Processes

Re: Checking if an exe file is running

David Crow15-Dec-04 4:01

David Crow

15-Dec-04 4:01

HocusPocus235 wrote:
WinExec("Application.exe",SW_SHOWMAXIMIZED);

As WinExec() is for use with 16-bit Windows, why not use CreateProcess() instead?

STARTUPINFO si = {0};
PROCESS_INFORMATION pi = {0};
si.cb = sizeof(si);
CreateProcess(NULL, "Application.exe", ..., &si, &pi);

Now when you want to know about the process, just look at pi.hProcess.

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

Re: Checking if an exe file is running

Member 158681215-Dec-04 21:26

Member 1586812

15-Dec-04 21:26

Thanks for the sugestions people CreateProcess worked a charm Smile | :)

Re: Checking if an exe file is running

namaskaaram15-Dec-04 4:48

namaskaaram

15-Dec-04 4:48

well..... ihad done this a different way.....

u c .....windows cannot delete a file when itz running.....use that concept.....
first make extra copies(backup) of the exe in a different location.....suppose the file that u want to check is not running,and u check this by trying to delete this file using the other running application,if success in deleteing the file then the file that u were checking was not running,else if it couldnt delete it,it meanz itz running.....now suppose it wasnt running and by checking this file if itz running or not(by trying to delete method),the file getz deleted,so now replace the backup exe to the same location.....

thatz the idea,i used in one of my programz.....

(might soung stupid.....but it workz fine).....

hope this info helpz.....

Happy programmin....

cheerz.....
Big Grin | :-D

Re: Checking if an exe file is running

Antony M Kancidrowski15-Dec-04 6:05

Antony M Kancidrowski

15-Dec-04 6:05

Enumerating the running processes is as easy and a hell of a lot safer.

You also can not delete an executable if it is read only!!

I would *NOT* recommend that people try to determine if executables are running in this way.

Ant.

I'm hard, yet soft.
I'm coloured, yet clear.
I'm fruity and sweet.
I'm jelly, what am I? Muse on it further, I shall return! - David Walliams (Little Britain)

Re: Checking if an exe file is running

namaskaaram15-Dec-04 16:37

namaskaaram

15-Dec-04 16:37

well.....(just a suggestion;))afterall it workz!!!!!.....thanx for correcting me.....

Happy programmin bro.....

cheerz.....
Big Grin | :-D

Re: Checking if an exe file is running

David Crow16-Dec-04 2:29

David Crow

16-Dec-04 2:29

In some instances, working is merely a symptom of the output. Many things might appear to produce a correct result but that does not mean they are correct.

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

Re: Checking if an exe file is running

vishalmore15-Dec-04 17:31

vishalmore

15-Dec-04 17:31

Hi,
Look the MSDN documentation for following API's and structs

PROCESSENTRY32 struct and api's like CreateToolhelp32Snapshot,
Process32First,Process32Next etc.

you can use these set of api's to check the exe is running or not !
If you have patients wait for some days, i m putting the artical on this
issue !

Smile | :)

Regards,
Vishal

How to speed up creation of a window?

[AMI]14-Dec-04 23:53

[AMI]

14-Dec-04 23:53

I should create the dialog window (mfc) when hot key is pressed. All works fine, but at first time the dialog creates with a small delay and instantly later. How to speed up it first creation?
Thanks.

Re: How to speed up creation of a window?

User 665815-Dec-04 0:55

User 6658

15-Dec-04 0:55

You could create this window when your app is idle and set it to be hidden first. Then you just make it visible when the user presses the hotkey.

modified 12-Sep-18 21:01pm.

Extracting the Points from a CRgn Object

Rajesh_Parameswaran14-Dec-04 23:49

Rajesh_Parameswaran

14-Dec-04 23:49

Hi All,
Could anyone tell me with an example how to use the CRgn::GetRegionData()..?

TIA

regards,

Rajesh

Write a .ini file of the application in MFC

ytod14-Dec-04 23:33

ytod

14-Dec-04 23:33

Could someone tell me how to write a .ini file of an application to store some states of all controls in an application? Simply using CFile to write or there are some special classes to handle this? Thanks!

Re: Write a .ini file of the application in MFC

User 665815-Dec-04 0:54

User 6658

15-Dec-04 0:54

The
GetPrivateProfileXXX and
WritePrivateProfileXXX
functions do the job for you

modified 12-Sep-18 21:01pm.

color the text in MFC Dialog

ytod14-Dec-04 23:05

ytod

14-Dec-04 23:05

Hi, everyone:
Can someone provide a EZ way to change an individual text in a dialog? I knew that I can use CDC functions to realize that, but can I do this on a Static Control? To talk in detail, I wanna use SetWindowText() or SetDlgItemText( ) to change the text of a control containing some text string. And what should I do to change the reulting text? Or don't think about that, simply use CDC functions? Thanks!

Re: color the text in MFC Dialog

V.15-Dec-04 0:56

15-Dec-04 0:56

Handle the WM_CTLCOLOR message.
In VS call the properties for the dialog, there you can set handlers for messages, in that list is a WM_CTLCOLOR message. Choose a function to handle this.
Write something like this in it:

HBRUSH hbr = CDialog::OnCtlColor(pDC, pWnd, nCtlColor);<br />
CBrush *brush;<br />
brush = NULL;<br />
// TODO:  Change any attributes of the DC here<br />
CWnd* pStaticWnd = (CWnd*)GetDlgItem(IDC_STATIC_STATUS);<br />
if(pWnd == pStaticWnd){<br />
    pDC->SetTextColor(RGB(0, 0, 255));<br />
}                                       //end if<br />
pStaticWnd = (CWnd*)GetDlgItem(IDC_STATIC_INFO_DOC);<br />
if(pWnd == pStaticWnd){<br />
    if(lock_docstatus_text){<br />
        pDC->SetTextColor(RGB(0, 100, 200));<br />
    }                                   //end if<br />
    else{<br />
        pDC->SetTextColor(RGB(0, 0, 255));<br />
    }                                   //end else<br />
}                                       //end if<br />
pStaticWnd = (CWnd*)GetDlgItem(IDC_STATIC_INFO_SEND);<br />
if(pWnd == pStaticWnd){<br />
    if(lock_sendstatus_text){<br />
        pDC->SetTextColor(RGB(0, 100, 200));<br />
    }                                   //end if<br />
    else{<br />
        pDC->SetTextColor(RGB(0, 0, 255));<br />
    }                                   //end else<br />
}                                       //end if<br />
// TODO:  Return a different brush if the default is not desired<br />
return hbr;<br />

for more info check out msdn.

Hope this helps, good luck.

"If I don't see you in this world, I'll see you in the next one... and don't be late." ~ Jimi Hendrix

Re: color the text in MFC Dialog

ytod15-Dec-04 16:12

ytod

15-Dec-04 16:12

It didn't work....
But if the condition in if() changed to this form could work:

if( pWnd->GetDlgCtrlID() == IDC_STATIC_MY_STATIC )<br />
{<br />
    pDC->SetTextColor(RGB(255, 0, 0));<br />
}

Anyway, thnks for your help.

Re: color the text in MFC Dialog

David Crow15-Dec-04 4:04

David Crow

15-Dec-04 4:04

ytod wrote:
To talk in detail, I wanna use SetWindowText() or SetDlgItemText( ) to change the text of a control containing some text string. And what should I do to change the reulting text?

You just answered your own question. Use SetWindowText().

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

Re: color the text in MFC Dialog

ytod15-Dec-04 15:33

ytod

15-Dec-04 15:33

DavidCrow wrote:
ytod wrote:
To talk in detail, I wanna use SetWindowText() or SetDlgItemText( ) to change the text of a control containing some text string. And what should I do to change the reulting text?

Poke tongue | ;-P

Miss one word "color":
And what should I do to change the reulting text "color"?

But I need to try what the previous post described first, thanks!

Re: color the text in MFC Dialog

David Crow16-Dec-04 4:00

David Crow

16-Dec-04 4:00

Using OnCtlColor(), or handling the WM_CTLCOLOR message, is the preferred method.

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

How to add a lineat the beginnig of a file?

lucia4444es14-Dec-04 22:50

lucia4444es

14-Dec-04 22:50

I need to insert a new line at the beginning of a text file but i don´t know how to do this without overwriting the first line. This is my code:

...
file.SeekToBegin();
file.WriteString(text);
...

I've also tried this:

...
file.SeekToBegin();
file.WriteString("\r\n");
file.WriteString(text);
...

but it doesn´t work. Could anyone help me? Thanks

Lucia

Re: How to add a lineat the beginnig of a file?

User 665814-Dec-04 23:11

User 6658

14-Dec-04 23:11

Do you have a valid file handle, do you have write-access to this file?

Check the return codes.

modified 12-Sep-18 21:01pm.

Re: How to add a lineat the beginnig of a file?

Cedric Moonen14-Dec-04 23:11

Cedric Moonen

14-Dec-04 23:11

It is not possible to 'insert' new data at the begining of the file. A solution for doing that is using a temporary file. In this file, you first copy the first line you need to insert, then copy all the data from the original file. When this is done, you take this data and copy it into the original file (erasing all it's previous contents).

Re: How to add a lineat the beginnig of a file?

ytod14-Dec-04 23:21

ytod

14-Dec-04 23:21

I think allocating a buffer that's long enough to store previous data could also work.

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.