__throwLineNumber

Go Up to except.h Index

Header File

except.h

Syntax

extern unsigned _RTLENTRY __ThrowLineNumber();

#define __throwLineNumber __ThrowLineNumber()

Description

Use this global variable to get the name of a thrown exception. The output for this variable is a printable character string.

To get the line number for a thrown exception with __throwLineNumber, you must compile the module with the -xp compiler option.

Example

#include <vcl.h>
#pragma hdrstop
#include <except.h>

USERES("Project1.res");
//---------------------------------------------------------------------------
#pragma option -xp

void MyFunc(void)
{
   throw Exception( "The rain in spain lies mainly in the plain." );
}

//---------------------------------------------------------------------------
#pragma argsused
int main(int argc, char* argv[])
{
  try { MyFunc(); }

  catch ( Exception &e )
  {  ShowMessage(  e.Message + "\n\n"
                  + "An exception of type " + __ThrowExceptionName()
                  + "\nwas thrown by line " + AnsiString(__ThrowLineNumber())

                  + "\nof file " + __ThrowFileName() );
  };
  return 0;
}