TStringList->LoadFromFile throws exception

c++ builder

    Sponsored Links


  • 1. How to find the x (unknown word-string) in a Memo...?
    hi dear builders, I would like to give a user an option to find words in a Memo / RichEdit... the below code works fine for finding a specific word & select it.. But I would like to know how is it possible to search for a "unknown" word depending on its count...Bad English ! -- Let me explain it like this: How can I find for example the 2nd, 5th or 123th word and display it in a other Memo (or a MessageBox...) I guess the TSearchDialog will not help me very much, right ?? I hope someone can help me... Oren /**************************************************************/ void __fastcall TfrmWord_Find::Button1Click(TObject *Sender) { AnsiString s = Edit1->Text; char *ptr = strstr(Memo1->Text.c_str(), s.c_str()); if(ptr) { Memo1->SelStart = Memo1->GetTextLen() - strlen(ptr); Memo1->SelLength = s.Length(); Memo1->SetFocus(); } } /**************************************************************/
  • 2. TLMDListBox Pictures, Colors...
    I would to know how to add a picture into a LMD list box, and also how to change the color or one item in the list, eg the font and maybe cell color etc. Think is over
  • 3. calculating days between 2 dates
    i'm using DaysBetween() to try and calculae the number of days between 2 dates, but when i use the following code it returns 0. TDateTime *RegoDate = new TDateTime(3, 9, 28); ShowMessage(RegoDate->DateString()); ShowMessage(DateToStr(Date())); int Days = DaysBetween(Date(), RegoDate->CurrentDate()); // date is 30/7/03 ShowMessage((AnsiString)Days); i can't see what i'm doing wrong. any help is appreciated. TIA
  • 4. Office2k tab
    Hi. Has anyone tried using components from Office2k tab? I simply need to open MS word document. How do I do it with TWordApplication, TWordDocument components? Have tried this: OleVariant WFileName = "c:\\temp\\some.doc"; OleVariant ItemIndex = 1; try { Form1->WordApplication->Connect(); } catch (Exception &exception) { MessageDlg("MS Office may not be installed", mtError, TMsgDlgButtons() << mbYes, 0); Abort; } Form1->WordApplication->Documents->Open(WFileName); and got 'Type mismatch' error at runtime. Gintaras

TStringList->LoadFromFile throws exception

Postby mataus » Tue, 17 Jun 2008 08:23:31 GMT

Hello all.

I have problem with TStringList->LoadFromFile().  I have to make a program 
that shows information from text log file.  The file is always opened by a 
second program that keeps writtin .

When i call TStringList->LoadFromFile() i get exception "Cannot open file 
C:\Program Files\Company\event log.txt".  I think this is becuase log file 
is openned, by second program.  But notepad can open the file.

Can anyone help me?


Re: TStringList->LoadFromFile throws exception

Postby Remy Lebeau (TeamB) » Wed, 18 Jun 2008 02:08:38 GMT

TStrings::LoadFromFile() attempts to open the file with fmShareDenyWrite 
sharing rights specified.  Since your other app already has the file opened 
for writing, such access will always fail while the other app is using the 
file.  To get around it, you will have to use LoadFromStream() instead. 
That way, you can instantiate your own TFileStream with less restrictive 
sharing rights specified, ie:

    TFileStream *Stream = new TFileStream(FileName, fmOpenRead | 
        delete Stream;


Re: TStringList->LoadFromFile throws exception

Postby Mark Jacobs » Wed, 18 Jun 2008 22:52:34 GMT

That is a lovely example. Thanks Remy.
Mark Jacobs

Similar Threads:

1.throw new Exception() vs. throw Exception()

What is the difference between these two?:

throw new Exception("msg");

throw Exception("msg");

When should I use one vs. the other? 

2.TRegistry->WriteBool() throws exception

Hi all,

I know this might be trivial, but I couldn't locate any post on this with 
search, so I'll have to ask it.

I'm using TRegistry to access the Registry, when I tried to use 
WriteBool(ValName, Value), BCB always give me an exception upon compiling:

Project TCPrinter.exe raised an exception class ERegistryException with 
message 'Failed to set data for 'AutoMode''. Process stopped.

The problem sourced from this block of code:

void __fastcall TForm1::AutoCheckClick(TObject *Sender)
    TRegistry *reg = new TRegistry;
    reg->WriteBool("AutoMode", AutoCheck->Checked);
    delete reg;

AutoCheck is a TCheckBox, AutoMode is the Registry Value Name.

The strange thing is, it's thrown upon compiling, I haven't triggered the 
event yet. I do have a reg->ReadBool() in the constructor, but it never 
caused any problem. I deleted the reg at the end of the constructor, so it's 
not object conflict problem...

Anyone have any idea what's wrong? Thanks in advance. 

3.Can basic_string<>::c_str() throw exceptions?

  Hi all.

  I was wondering. Can the standard basic_string<> c_str()
member function throw any exceptions? Is it perhaps
implementation dependent?

  I tried checking the standard and as far as I can see it is
implementation dependent with no guarantees what so
ever, but I was hoping I may have missed something... :-)

  When the C++ standard does not specify any exception
specifications for some function, nor does it list any
exceptions in the function description. Does that mean
that any exception may be thrown? If that is so, how are
we supposed to prepare for those exceptions in our code
other than 'something happened, I do not know what, but
it was not expected so I'm aborting...'.

  Hope to hear from you soon.

    Jurko Gospodneti?

4.TBitmap.LoadFromFile() throws Stream Error?

Hello all, 

I'm new to Delphi 2005, and have a problem I'm having a difficult time

I have an OwnerDraw TListbox  where basically I'm just drawing
thumbnails of .BMP files in a folder. It works fine, except on SOME
files, the TBitmap.LoadFromFile() throws a stream error.

I can't seem to find out why it does it on these particular .BMP
files. Here's a snippet of the very vanilla code...

 with (Control as TListBox).Canvas do
     If Not FileExists(myListbox.Items[Index]) Then Exit;
        if Bitmap<>nil then
          // Bitmap.PixelFormat := pf24bit; //tryed setting this..it
          // didnt help
          Bitmap.LoadFromFile( myListbox.Items[Index] ); 

The BMP files are small...just approx 98x98
I have found that if I open the troublesome .BMP files and reduce the
color depth to 32K and resave, it makes the stream error disappear. Is
there anything I'm doing obviously wrong in the code? Or is it just
the .BMP files were saved 'strangley'?

5.TSTringList LoadFromFile

"Chad Eddy" < XXXX@XXXXX.COM > wrote in message
news:3f15b185$ XXXX@XXXXX.COM ...
> I am using a TStringList to load files and do some file
> I/O on them.  This works with most files, but not with
> the .doc and .chm's that I try.

Those are not plain-text formats.  Well, .doc may be, but only if it is
encoded in RTF formatting.

> After the load from file, I have a count of 1 line, which
> has a small amount of charachters.

Probably because those formats have binary data in them that is preventing
LoadFromFile() from parsing the entire file.  LoadFromFile() only works
correctly for plain-text files.

> Is there something I have to do different for some files?

Yes - don't use TStringList for what you are trying to do.  Access the file


6. Faster TStringList.LoadFromFile

7. TRichEdit->Lines->LoadFromFile( ) filesize warning...

8. Hidden TPanel does not resize when TImage->Picture->LoadFromFile

Return to c++ builder


Who is online

Users browsing this forum: No registered users and 14 guest