The FILE * fp=fopen (OpenDialog1 - & gt; FileName. C_str (), "rb"); XE8 file read always prompt error, how to change

CodePudding user response:

What error message?

CodePudding user response:

AnsiString STR=OpenDialog1 - & gt; The FileName.
The FILE * fp=fopen (STR) c_str (), "rb");

CodePudding user response:

First, using the FILE in XE series, libraries need to quote the stdio. H

# include & lt; Stdio. H>//reference stdio. H library

Second, in a series of XE has wide characters used by default, it is recommended to use the wide character function of form a complete set _wfopen to read and write files

# include & lt; Stdio. H>//reference stdio. H library

Void __fastcall TForm1: : Button1Click (TObject * Sender)
{
The FILE * outf;//define a file pointer
If (OpenDialog1 - & gt; The Execute ())
{
Outf=_wfopen (OpenDialog1 - & gt; FileName. W_str (), L "rb");
}
}

CodePudding user response:

The

reference 3 floor KFRGHT response:

first, using the FILE in XE series, libraries need to quote the stdio. H

# include & lt; Stdio. H>//reference stdio. H library

Second, in a series of XE has wide characters used by default, it is recommended to use the wide character function of form a complete set _wfopen to read and write files

# include & lt; Stdio. H>//reference stdio. H library

Void __fastcall TForm1: : Button1Click (TObject * Sender)
{
The FILE * outf;//define a file pointer
If (OpenDialog1 - & gt; The Execute ())
{
Outf=_wfopen (OpenDialog1 - & gt; FileName. W_str (), L "rb");
}
}

Positive solution

CodePudding user response:

reference 5 floor xiao_la_mu reply:

KFRGHT big reply to more perfect just the way they are!

 
Void __fastcall TForm1: : Button1Click (TObject * Sender) 
{
if(! OpenDialog1 - & gt; The Execute ()) 
{
return; 
} 
The FILE * outf;//define a file pointer 
Outf=_wfopen (OpenDialog1 - & gt; FileName. W_str (), L "rb"); 
} 

perfect