C / C++ / MFC Discussion Boards

Re: how to aoutomaticaly call a function at the time of start the application.

bosfan7-Sep-06 21:37

7-Sep-06 21:37

Thanx a lot from me for this trick!
Only one question, in dialog based projects, where is the best place to create this,
in application class??
regards
break;

Re: how to aoutomaticaly call a function at the time of start the application.

Cedric Moonen8-Sep-06 4:14

Cedric Moonen

8-Sep-06 4:14

Did you understand my post ? Because it doesn't look like... A static variable in this case will need to be global of course. Otherwise it won't work (cause if it is local to a function, it is evaluated only the first time the function is entered).
Do you really need to do this before the main gets executed ? Won't it work if you put the code in OnInitDialog ? What do you need to do exactly ?

Cédric Moonen
Software developer

Charting control [Updated - v1.1]

Re: how to aoutomaticaly call a function at the time of start the application.

David Crow8-Sep-06 4:21

David Crow

8-Sep-06 4:21

Cedric Moonen wrote:
Static variables are evaluated at the startup of your program (before main gets executed).

As are global objects in general.

"Talent without discipline is like an octopus on roller skates. There's plenty of movement, but you never know if it's going to be forward, backwards, or sideways." - H. Jackson Brown, Jr.

"Judge not by the eye but by the heart." - Native American Proverb

Re: how to aoutomaticaly call a function at the time of start the application.

Arman S.7-Sep-06 21:12

Arman S.

7-Sep-06 21:12

In the title you say "at the time of start the application", and in the content - "at the time of first object creation"; they are not the same...

Keep a static class variable of type bool and check whether it is false in the constructor. If so, the first object is being created (now set it true), otherwise - not the first one.

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Arman

unable to execute .Net 2005 executable in Test PC

K. narasimharao7-Sep-06 20:43

K. narasimharao

7-Sep-06 20:43

Hi,

I am trying to execute .Net 2005 executable in Test PC.It's not executing and giving an error message "The application has failed to start because the application configuration is incorrect. re-install the application and fix the problem"

Do we need to install any framework or service packs in Test PC? Please help me.

thanks & regards,
Narasimharao

knarasimharao

Re: unable to execute .Net 2005 executable in Test PC

Marc Soleda7-Sep-06 22:33

Marc Soleda

7-Sep-06 22:33

K. narasimharao wrote:
Do we need to install any framework or service packs in Test PC

I think so. You should install at least Framework 2.0 redistributable package

Marc Soleda.

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

Security Attributes

Arman S.7-Sep-06 20:41

Arman S.

7-Sep-06 20:41

I want to apply security attributes for my application so that it cannot be killed from Task Manager. So how to use security attributes to CreateProcess function.

Thanks in advance

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Arman

PropertySheet & Dialog?

Divyang Mithaiwala7-Sep-06 20:16

Divyang Mithaiwala

7-Sep-06 20:16

Hi All,

I am useing EVC++ 4 for PocketPC.
Can I use CDialog in CPropertyPage?

regards,
Divyang Mithaiwala

Re: PropertySheet & Dialog?

David Crow8-Sep-06 4:22

David Crow

8-Sep-06 4:22

Divyang Mithaiwala wrote:
Can I use CDialog in CPropertyPage?

CPropertyPage is derived from CDialog.

problem in executing .net 2005 exe in .net 2003 environment

Jyothi_9127-Sep-06 19:59

Jyothi_912

7-Sep-06 19:59

We have converted .net 2003 application(developed in vc++.net) to .net 2005. But the exe built in .net 2005 is not executing in .net 2003 environment. It is showing error that "initialization required to execute this application and rebuilding the application will fix problem".

To execute that .net 2005 exe under .net 2003 environment do we need to have any frame work or service packs?

Thanks in Advance

Re: problem in executing .net 2005 exe in .net 2003 environment

prasad_som7-Sep-06 20:05

prasad_som

7-Sep-06 20:05

You need to rebuild that application in .net 2003 environment, as error says.

Prasad
Notifier using ATL

Re: problem in executing .net 2005 exe in .net 2003 environment

Jyothi_9127-Sep-06 20:38

Jyothi_912

7-Sep-06 20:38

Actually that application is developed in .net 2003 and we are converting that in to .net 2005 framework . Now I am executing the exe in .net 2003 environment that is built from .net 2005. This is giving error that "he application is configuration is incorrect".

Even for a small test application developed in .net 2005 and while executing under .net 2003 in seperate test PC is also giving same error.

Re: problem in executing .net 2005 exe in .net 2003 environment

prasad_som7-Sep-06 21:33

prasad_som

7-Sep-06 21:33

Those test machines need .Net framework 2.0 installed.

Prasad
Notifier using ATL

Transperent Bitmaps

mpk19797-Sep-06 19:40

mpk1979

7-Sep-06 19:40

how to create Transparent Bitmaps using win32

Re: Transperent Bitmaps

Hamid_RT7-Sep-06 19:49

Hamid_RT

7-Sep-06 19:49

See Drawing Transparent Bitmap with ease with on the fly masks in MFC[^] of course its MFC but maybe it is some helpful to you

WhiteSky

Check Files in used

thangnvhl7-Sep-06 17:45

thangnvhl

7-Sep-06 17:45

I am writing a program that will delete file(s) in a specified folder except file(s) in used.
Please show me how to check whether a file is using or not.
(Use C/C++ Non-MFC)

Thanks a lot

Sincerely
Thangnvhl

Re: Check Files in used

aldo hexosa7-Sep-06 18:38

aldo hexosa

7-Sep-06 18:38

may be:
HANDLE hFile = CreateFile("test.txt",GENERIC_WRITE,FILE_SHARE_READ,NULL,OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL ,NULL);
if(hFile == INVALID_HANDLE_VALUE){
if(GetLastError() == 5 || GetLastError() == 4)
{
//this file is being used
}
}else
{
CloseHandle(hFile);
}

Re: Check Files in used

David Crow8-Sep-06 4:25

David Crow

8-Sep-06 4:25

aldo hexosa wrote:
if(GetLastError() == 5 || GetLastError() == 4)

Why use constants? It would be much more readable to use:

if (GetLastError() == ERROR_TOO_MANY_OPEN_FILES || GetLastError() == ERROR_ACCESS_DENIED)

Re: Check Files in used

Renjith Ramachandran7-Sep-06 20:44

Renjith Ramachandran

7-Sep-06 20:44

an alternative way i think is to use the OF_SHARE_EXCLUSIVE flag as the third argument for the OpenFile() function.

May all beings be happy and free...

How to delete a file after user close it

rockryan7-Sep-06 17:39

rockryan

7-Sep-06 17:39

Hi, Expert,

Now I'm implementing a encrypt software, all file is encrypted in a folder,
But when user wanna excute the file, I need decrypt the file and use CreateFile and WriteFile function copy it to a temp file. Then use ShellExecute let user can excute the file. when user edit and save the temp one, I'll encrypt back to the origin encrypt file.

Now my problem is, After user close the file, I need delete the temp one, because all it's content is not encrypt.

I search long time on internet, Can't use "open exclusive" to check is the file opened, because it can't detect notepad or ultraedit, also can't search the window's title to check have the file name or not, because some program may not show file name on window's title.

I found CreateFile have a param FILE_FLAG_DELETE_ON_CLOSE, but can't figure out how to solve my problem, or can you provide any other solution? Thanks!!

Re: How to delete a file after user close it

Rinu_Raj7-Sep-06 17:50

Rinu_Raj

7-Sep-06 17:50

Check the following APIs

FindFirstChangeNotification(....)
ReadDirectoryChangesW(....)

that may help you

RinuRaj

Re: How to delete a file after user close it

Waldermort7-Sep-06 18:29

Waldermort

7-Sep-06 18:29

rockryan wrote:
Can't use "open exclusive" to check is the file opened, because it can't detect notepad or ultraedit

I'm not sure about notepad, but when UltrEdit opens a files it first creates a snapshot, reads the file, then closes the handle. I.e. It makes a copy of the file first and uses this copy for all it's read and write operations. If you are creating encrypted files, it is generally a bad idea to write anything unencrypted back to the HD.

how to clear view in SDI form

aldo hexosa7-Sep-06 17:33

aldo hexosa

7-Sep-06 17:33

does anyone know how to clear view in SDI form ?
thanx alot

Re: how to clear view in SDI form

prasad_som7-Sep-06 19:05

prasad_som

7-Sep-06 19:05

What does this mean? Do you want to content drawn on view?

Prasad
Notifier using ATL

Re: how to clear view in SDI form

Arman S.7-Sep-06 20:44

Arman S.

7-Sep-06 20:44

Invalidate and draw nothing.

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Arman

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