C / C++ / MFC

Re: Save an file with FILE_ATTRIBUTE_READONLY Attribute

13-Sep-06 0:26

If I understood u right, you dont want another process to access the file when ur program is using it, to do this use CFile::shareExclusive with the Open operation.

if u open a file while in read-only, u cant write in it unless u clear this attribute, so that ur program crashes.

Mohammad

And ever has it been that love knows not its own depth until the hour of separation

Garth J Lancaster13-Sep-06 0:34

Garth J Lancaster

13-Sep-06 0:34

Im not sure I understand all you're saying but :-

assuming : - LPCTSTR lpFileName

DWORD dwFileAttributes = GetFileAttributes( lpFileName);
long mask = dwFileAttributes;
if( ! ( dwFileAttributes & FILE_ATTRIBUTE_READONLY))
{
mask = dwFileAttributes | FILE_ATTRIBUTE_READONLY;
if( ! SetFileAttributes( lpFileName, mask))
{
// Flag the error here
return;
}
}

is probably what you're looking for - your program would of course have to remove the readonly flag before it used the file - the suggestion above this is also valid (ie exclusive flag)

'g'

Re: Save an file with FILE_ATTRIBUTE_READONLY Attribute

bosfan13-Sep-06 4:20

bosfan

13-Sep-06 4:20

Hello Garth,
yes, this is that what im looking for!
but need some help again!
Please check this code:

<br />
// <br />
// first i check if is ReadOnly File!<br />
DWORD dwFileAttributes;<br />
DWORD mask;<br />
<br />
dwFileAttributes = GetFileAttributes(csFileName); // dwFileAttributes have now 0x00000021, ok, is archive and readonly protected<br />
mask = dwFileAttributes;<br />
<br />
if((dwFileAttributes & FILE_ATTRIBUTE_READONLY))<br />
{<br />
mask = dwFileAttributes & FILE_ATTRIBUTE_NORMAL; // mask have now 0x00000000, why not 0x00000020->archive! Ok, not nice but this let me to open my file!<br />
if(!SetFileAttribute(csFileName, mask))<br />
{<br />
	AfxMessage(csErrorMessage);<br />
}<br />
}<br />
<br />
// to open file with mask == 0x00000000 make no problems<br />
cMyFile.Open(...);<br />
// write some data to file<br />
// close file<br />
// now set the flag ReadOnly:<br />
dwFileAttributes = GetFileAttributes(csFileName); // here returns a value 0x00000020 // ok, is an archive!<br />
mask = dwFileAttributes;<br />
if(!(dwFileAttributes & FILE_ATTRIBUTE_READONLY))<br />
{<br />
mask = dwFileAttributes | FILE_ATTRIBUTE_READONLY; // mask have now 0x00000021 // archive and readonly protected<br />
if(!SetFileAttributes(csFileName, mask))<br />
{<br />
// errorhandling<br />
}<br />
}<br />

This is what im doing with your response!
Is this right, take a look to my sample please!
Maybe is not the best way, but they do wat i want! Confused | :confused:

with best regards
break;

Re: Save an file with FILE_ATTRIBUTE_READONLY Attribute

Garth J Lancaster13-Sep-06 17:32

Garth J Lancaster

13-Sep-06 17:32

I would have done :-

DWORD dwFileAttributes = GetFileAttributes( lpFileName);
long mask = dwFileAttributes;
if( dwFileAttributes & FILE_ATTRIBUTE_READONLY)
{
long mask = dwFileAttributes & (~FILE_ATTRIBUTE_READONLY);
if( ! SetFileAttributes( lpFileName, mask))
{
// Output Some sort of error here
// Could not make (file) READ WRITE
return;
}
// Good - Output Some Soft of Message here ?
// (file) Is Read/Write
}

not sure if that answers your question

'g'

Re: Save an file with FILE_ATTRIBUTE_READONLY Attribute

bosfan13-Sep-06 20:57

bosfan

13-Sep-06 20:57

Good morning!
yeah, that it's!

With best regards!
break;

inserting image in Access File

aaaan13-Sep-06 0:04

aaaan

13-Sep-06 0:04

I am trying to repair the Curroupted Ms Access .mdb file.
here i able to get and insert most of the data from the Curroupted file to new created file by using the function defined in MsAccess class msacc9.olb in VC++.

I able to read and inser most of the data but unable to insert image in the OLE data field.
Is there any code or any othe way to do so.
Pls help me realated to this.

Thank You

Nirmal

Re: inserting image in Access File

Hamid_RT13-Sep-06 1:36

13-Sep-06 1:36

See here[^]

WhiteSky

VC6 wheel mousing???

dhruba.bandopadhyay12-Sep-06 23:51

dhruba.bandopadhyay

12-Sep-06 23:51

Is there any way to get wheel mouse to work in the Call Stack Debug window in Visual C++ 6.0?

Wheel mouse works in normal source code windows.

Re: VC6 wheel mousing???

Hamid_RT14-Sep-06 8:37

how can we know selected item is folder of file at run time?

14-Sep-06 8:37

Do you need to three actions from mouse(L/R/M)?

WhiteSky

kiranin12-Sep-06 23:18

kiranin

12-Sep-06 23:18

How to differentiate which is folder and which is files at run time?

Re: how can we know selected item is folder of file at run time?

_AnsHUMAN_ 12-Sep-06 23:21

_AnsHUMAN_

12-Sep-06 23:21

kiranin wrote:
differentiate which is folder and which is files at run time?

See WIN32_FIND_DATA
The first parameter to this has the information about the file/folder attributes.
FILE_ATTRIBUTE_DIRECTORY-The handle identifies a directory.

Somethings seem HARD to do, until we know how to do them.
Wink | ;-)

_AnShUmAn_

SHBrowseForFolder in combobox

Mohammad A Gdeisat12-Sep-06 22:59

Re: SHBrowseForFolder in combobox

12-Sep-06 22:59

hi all,

I need to display the 'Browse For Folder' Dialog window, but I need to place it in a combo box instead of being a popup dialog, so can anybody help with this???

Thanks

Mohammad Confused | :confused:

And ever has it been that love knows not its own depth until the hour of separation

Hamid_RT13-Sep-06 1:34

Re: SHBrowseForFolder in combobox

13-Sep-06 1:34

You can insert your controls to it but for insert it to combobox I dont know why you want to insert it to combobox do you need to folders?

WhiteSky

Mohammad A Gdeisat13-Sep-06 1:54

Re: SHBrowseForFolder in combobox

13-Sep-06 1:54

I dont want to display in a combo box so that it doesnt take much of the dialog area...

do u know how???

And ever has it been that love knows not its own depth until the hour of separation

Hamid_RT13-Sep-06 8:27

About Socket Server in vc++

13-Sep-06 8:27

You can use from CTreeCtrl and see examples for file/folder with CTreeCtrl on codeproject did you see them?

WhiteSky

hiral_shah12-Sep-06 22:46

hiral_shah

12-Sep-06 22:46

Hi,
I am trying to develop a socket server which will communicat with Microsoft Office in LAN.
But I don't know even a small bit about socket server. Can anyone help me out? Please Reply as soon as possible.
Thank you.

Mohammad A Gdeisat12-Sep-06 23:02

12-Sep-06 23:02

You should go to the networking section of codeproject and pickup a begginers tutorial on sockets, its a long way to be discussed in a single post...

Regards,
Mohammad

And ever has it been that love knows not its own depth until the hour of separation

hiral_shah12-Sep-06 23:49

hiral_shah

12-Sep-06 23:49

Thank u 4 ur reply but cause i m very new in this site i could not reach at the place show by u, can u plz tell me the proper link of it such that i can view the tutorial. Plz.

Mohammad A Gdeisat13-Sep-06 0:18

13-Sep-06 0:18

sure,

here is the list of Networking articles in code project:
http://www.codeproject.com/internet/[^]

and if u need direct links here are some:
http://www.codeproject.com/internet/singleServerMulClient.asp[^]

http://www.codeproject.com/internet/serversocket.asp[^]

http://www.codeproject.com/internet/server_client_sockets.asp[^]

Good Luck,
Mohammad

And ever has it been that love knows not its own depth until the hour of separation