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Hi everybody,
I'm looking for the (WIN32) API to find out which process is currently using a file i'm just trying to delete or update. There's a great tool called FileMon in sysinternals.com, but unfortunately the source isn't available (although it's free).
It would be a great help if some one might have an idea at least where to start with to get this info.
Thanks in Advance!
Wolfgang.
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From memory, there used to be a dll called PSAPI which may help - but I don't know if it's still valid.
Alternately, it's quite possible there isn't a nice Win32 api. I know some of the sysinternals software launches a device driver to do its work, to communicate with the kernel - which is where the handles all end up.
Iain
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Hi,
FYI:
if you want write or delete access (anything other than read access) to a file
that just got created (by yourself or someone else, does not matter),
chances are you will find the file is being accessed by some other process,
and your access is not granted.
The other process very likely is some server code that is there to assist you
somehow. Candidates are:
- anti-virus software (Norton, McAfee, whatever)
- indexing software (Google Desktop, MS Office, whatever)
The common thing is these packages are looking all the time for new files, so
they can inspect them.
Microsoft is aware of the consequences; Windows Explorer will try rename and
delete attempts up to five times (with one-second interval), and only reports
failure if the action continues to fail for that time.
The solution:
1. either use a different file name
2. or remove all background reader candidates (bad idea)
3. or implement the retry loop as Explorer has it (use a Windows.Forms.Timer
for this)
BTW: if all you need is Read, make sure to allow others to read as well, i.e.
use File.Open(path, FileMode.Open, FileAccess.Read, FileShare.Read)
Luc Pattyn [Forum Guidelines] [My Articles]
this months tips:
- before you ask a question here, search CodeProject, then Google
- the quality and detail of your question reflects on the effectiveness of the help you are likely to get
- use PRE tags to preserve formatting when showing multi-line code snippets
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I've just tried VC++ 2008 Express and I'm loving the new /MP multi-threaded build feature - It's cut build time by a third
I'm now trying to get it configured for 64-bit development (ie. to produce 64-bit native exe), although the installation doesn't appear to include the 64-bit compiler tools. What do I need to install to enable 64-bit development ?
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I haven't installed the express version, but on the Professional version, the 64-bit
compiler tools were NOT installed by default if you chose the typical installation.
Mark
Mark Salsbery
Microsoft MVP - Visual C++
![Java | [Coffee]](https://codeproject.global.ssl.fastly.net/script/Forums/Images/coffee.gif)
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I am maintaining an old application that was once developped using an UI framework called Ilog Views.
The documentation is really poor and as the product is far from beeing free, there is no user community.
Here is my problem:
In the UI, there is a IlvMatrix gadget which behavior I need to modify. When the user double-clicks an item, I need a callback to be called without editing the item. I think this could be done by overriding a method (that is virtual) but I do not know how to subclass a gadget. I am sure that this is doable but I can't find a single example either in the documentation or in the very few samples provided with the library.
Any hints on how to do that would be highly appreciated.
François Gasnier
___________________________________________________________
On the whole human beings want to be good, but not to good and not quite all the time - George Orwell
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Hello everyone,
The PRIVATE keyword of module definition file (.DEF) means,
http://msdn2.microsoft.com/en-us/library/hyx1zcd3(vs.80).aspx
--------------------
The optional keyword PRIVATE prevents entryname from being placed in the import library generated by LINK. It has no effect on the export in the image also generated by LINK.
--------------------
My questions are,
1. Does it has any practical usage to prevent the exported function from import library file?
2. If the exported function is not in the import library file, then other component has to use LoadLibrary and GetProcAddress to use the DLL, other than using implicit link?
thanks in advance,
George
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1. You can resolve strange linkage errors in a multi-module project by using PRIVATE in the DEF file of a mdoule whose function does not need to be in the library but is accessed otherwise by LoadLibrary and GetProcAddress. Think of it as reducing the name-space pollution, when necessary.
2. Yes - depending. However, if your process is already implicitly linked to this same module, you can use GetModuleHandle followed by GetProcAddress.
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Thanks Blake,
1. Could you show a simple sample please? I do not quite understand what do you mean *name-space pollution*?
Blake Miller wrote: 1. You can resolve strange linkage errors in a multi-module project by using PRIVATE in the DEF file of a mdoule whose function does not need to be in the library but is accessed otherwise by LoadLibrary and GetProcAddress. Think of it as reducing the name-space pollution, when necessary.
2. You mean even if the method is PRIVATE, we still could use the generated import library file (.lib) and implicit linking to access the PRIVATE method of the DLL? If yes, could you show some pesudo code please? In my current limited knowledge, I think to access the PRIVATE method, we could only use LoadLibrary and GetProcAddress.
Blake Miller wrote: 2. Yes - depending. However, if your process is already implicitly linked to this same module, you can use GetModuleHandle followed by GetProcAddress.
regards,
George
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George_George wrote: Does it has any practical usage to prevent the exported function from import library file?
same as having a private function in a class for example. it prevent the function from being usable from outside, the it's still available internally.
George_George wrote: If the exported function is not in the import library file, then other component has to use LoadLibrary and GetProcAddress to use the DLL, other than using implicit link?
not, if it's private, it's not hidden, it's just unavailable from outside the DLL, whatever linking method you're using...
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Thanks toxcct,
I am confused from your reply. Seems you mean the PRIVATE method is not accessible from outside (e.g. other module -- EXE or DLL)?
But for COM DLL, we usually use PRIVATE in .DEF file to describe the functions exported to other module, like DllGetClassObject.
regards,
George
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i'm using 'Dan Pilat' printing made easy article in my Dialog based application and its working perfectly.But how do i stop the printing when the text is over, actually i'm using the print function for printing the bill. so it should stop the printing after the bill is over, i'm not using his header and footer part.
Kindly reply,
thanks in advance.
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You can use of EndDoc or EndPage.
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Hello everyone,
Could anyone recommend some tutorials about safearray please?
http://msdn2.microsoft.com/en-us/library/ms221482(vs.80).aspx
thanks in advance,
George
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Do you like to read this[^]?;)
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Thanks Hamid,
regards,
George
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that would not be so hard to find out by your self, isn't it ?
si, here is a starting point[^]. enjoy
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<br />
int CChildView::OnCreate(LPCREATESTRUCT lpCreateStruct)<br />
{<br />
m_pQuickSearchDlg->Create(IDD_QUICK_SEARCH,this);<br />
return CWnd::OnCreate(lpCreateStruct);<br />
}<br />
When I use GetParent in CQuickSearchDlg, it returns a point of
CMainFrame. How can this be?
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From VC help:
"
pParentWnd
Points to the parent window object (of type CWnd) to which the dialog object belongs. If it is NULL, the dialog object’s parent window is set to the main application window.
"
And in the hierarchie chart, CDialog hangs from CWnd, at the same level as the CView. So I find not so extrange that it gives the CMainFrame as parent.
If you want another result, wha don't you try to use SetParent in the OnInitDialog () ?
Greetings.
--------
M.D.V. 
If something has a solution... Why do we have to worry about?. If it has no solution... For what reason do we have to worry about?
Help me to understand what I'm saying, and I'll explain it better to you
“The First Rule of Program Optimization: Don't do it. The Second Rule of Program Optimization (for experts only!): Don't do it yet.” - Michael A. Jackson
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Hi all,
I have a CString in binary values. I want to read it to find some data, not from the beginning. Say like this,
I want to skip first 8 bytes. Then read the next 16 bytes. Then skip next 5 bytes and read the rest. That mean I want to move the reading position of the CString on it. How can I do that.
I know that if I use a CFile I can use seek(). Is there any smiler way to do it.
I appreciate your help all the time...
Eranga
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Rather than using CString use BYTE * or char *
Manish Patel.
B.E. - Information Technology.
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Actually according to my application it is so easy to use as char *, as a buffer. Is it easy for my requirement?
I appreciate your help all the time...
Eranga
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Take a look at the Mid function[^] (and similar functions like Right and Left
EDIT: BTW, in the documentation there's always the list of all available methods. And in general, the name of the functions are quite explicit.
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Hmm, thats seems to me easy. I'll try it now. Let see. Thanks pal.
I appreciate your help all the time...
Eranga
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