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Put contents of a dat file into an editbox??

Posted on 1998-02-15
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Last Modified: 2010-04-10
How do I take the contents of edit1.dat and put it in Edit1??  In case you are wondering this is the opposite of the question (that someone just answered) about saving the input to a dat file...
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Question by:4099aol
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12 Comments
 
LVL 3

Accepted Solution

by:
q2guo earned 40 total points
ID: 1182259
AnsiString S("edit1.txt");
FMyFile = new TFileStream(S, fmOpenRead);
S.SetLength(FMyFile->Size + 1);
FMyFile->Read(S.c_str(), FMyFile->Size);
S[FMyFile->Size] = `\0';

Edit1->Text = S;
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Author Comment

by:4099aol
ID: 1182260
Error messages..

[C++ Error] Options.cpp(284): Undefined symbol'FMyFile'
[C++ Error] Options.cpp(287): Illegal character '`'(0x60).


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LVL 3

Expert Comment

by:q2guo
ID: 1182261
Sorry line

FMyFile = new TFileStream(S, fmOpenRead);

should read

TFileStream FMyFile = new TFileStream(S, fmOpenRead);
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Author Comment

by:4099aol
ID: 1182262
[C++ Error] Options.cpp(286): Cannot convert 'Classes::TFileStream *'to 'Classes::TFileStream'.

[C++ Error] Options.cpp(287):Pointer to structure required on left side of -> or 0>*.
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LVL 3

Expert Comment

by:q2guo
ID: 1182263
Sorry again, add the * before FMyFile

TFileStream *FMyFile = new TFileStream(S, fmOpenRead);
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Author Comment

by:4099aol
ID: 1182264
No problem,  but still more errors.

[C++ Error] Options.cpp(289): Illegal character '`' (0x60).
[C++ Error] Options.cpp(289): Illegal character '\' (0x6c).

thanks
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LVL 3

Expert Comment

by:q2guo
ID: 1182265
Line

S[FMyFile->Size] = `\0';

is suppose to be

S[FMyFile->Size] = '\0';


Do you see the difference?
the character before \ is suppose to be ' not `
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Author Comment

by:4099aol
ID: 1182266
thanks, now.  Can you quickly change it a little bit??  I need to change Edit2 also (smae way), but I am not sure what variabels to change.
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LVL 3

Expert Comment

by:q2guo
ID: 1182267
What do you want to change Edit2 to?
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Author Comment

by:4099aol
ID: 1182268
Will edit1 hold the registration code and edit2 holds the username.  So when the user opens up this dialog box I want it to tell them who the program is currently registered to (user/Edit2) and what the registration code is (Edit1).


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LVL 3

Expert Comment

by:q2guo
ID: 1182269
Assume the user name is stored in edit2.txt

AnsiString S2("edit2.txt");
FMyFile2 = new TFileStream(S2, fmOpenRead); S2.SetLength(2FMyFile->Size + 1);
FMyFile2->Read(S2.c_str(), FMyFile2->Size);
S2[FMyFile2->Size] = `\0';
Edit2->Text = S2;
FMyFile2->Free;   // to free resource related to the filestream
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Author Comment

by:4099aol
ID: 1182270
thanks
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