if I add a text file to the resource, how could I get this file in the programe?

[benben]

Hi: I add a text file(or html file) to the resource of the project, how could I get this file in the programe?I want to get its content .Is there any API function to do so? Thanks Benben

[Eugene Pustovoyt]

And how you have added it? Has wrote a his path as string resource or how? Best regards, Eugene Pustovoyt

[Jens Doose]

Try these Win32-API functions: FindResource LoadResource SizeofResource LockResource That will do the trick! Yours, Jens

[benben]

But could you give me an demo? Thanks Benben

[Jens Doose]

Sure. Let's assume you have added a textfile to your resource with ID=IDR_TEXTFILE, and your custom resource type has the name "TEXTFILE". You can extract the resource with the following code:

#include "stdafx.h"
#include "resource.h"

#include <TCHAR.h>

int APIENTRY WinMain(HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPSTR lpCmdLine,
int nCmdShow)
{
HRSRC hRsrc = ::FindResource( hInstance,
MAKEINTRESOURCE( IDR_TEXTFILE ),
_T("TEXTFILE") ); // *** My custom res type

if ( NULL != hRsrc )
{
HGLOBAL hGlob = ::LoadResource( NULL, hRsrc );

if ( NULL != hGlob )
{
  DWORD dwSize  = ::SizeofResource( NULL, hRsrc );
  LPVOID lpVoid = ::LockResource( hGlob );

  if ( NULL != lpVoid )
  {
    // \*\*\* Now you can work with the loaded resource.

    // \*\*\* In this case, we now it is a text file,
    // \*\*\* so cast it to a string
    LPCTSTR lpszString = reinterpret\_cast< LPCTSTR>( lpVoid );

    MessageBox( NULL, lpszString, \_T("From resource"), MB\_OK );
  }
}

};

return 0;
}

That's it ;-) Jens

[benben]

Thanks Benben

[benben]

just try "import" the file to your resource Thanks Benben

[Jens Doose]

Hmmm, one annotation: The more I think about it the more I get convinced, that it is not allowed to just cast the memory pointer to an LPCTSTR, because the trailing zero is missing. Instead it should be copied to an according buffer. So it should be:

LPCTSTR lpszString = reinterpret\_cast< LPCTSTR>( lpVoid );
TCHAR \*tcBuffer    = new TCHAR\[ dwSize + 1 \];
if ( NULL != tcBuffer )
{
  ZeroMemory( tcBuffer, ( dwSize + 1 ) \* sizeof( TCHAR ) );
  memcpy( tcBuffer, lpszString, dwSize \* sizeof( TCHAR ) );
}

But this is only the case with strings. Byte buffer or similar can't be used directly anyway (like LPCTSTR). Jens