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Using Command Line Arguments in Symbian
Most Symbian programs are launched through a graphical shell rather than through a command-line. The common exceptions are .exes on the PC platform, which can be run from a Windows command prompt.
For .exe programs, control is received through the E32Main() function, which, however does not supply arguments. Instead, access to arguments is provided by CCommandLineArguments. Conventional C and C++ programs receive their arguments from main(int argc, char* argv[]).
For a program that is launched as a new process, the arguments are available as part of the process command line and may be obtained in full using code such as
TPtrC program=me.FileName();
TPtrC args=me.CommandLine(); // User::CommandLine from Symbian 9.1 onwards
However, the arguments are in a raw form. For convenience, the CCommandLineArguments class provides functions to access the program name as argument 0, and each command-line argument as argument 1, 2 etc.
Arguments beginning with a quote may contain blanks and doubled quotes. Arguments not beginning with a quote are terminated by a blank.
{
console=Console::NewL(_L("Command-line arguments reader test"), TSize(KConsFullScreen, KConsFullScreen));
CleanupStack::PushL( console );
//Create CommandLine Arguments and read it.
CCommandLineArguments* args=CCommandLineArguments::NewLC();
for (TInt i=0; i<args->Count(); i++)
{
TPtrC argumentPrt(args->Arg(i));
console->Printf(_L("Arg %d == %S\n"), i, &argumentPrt);
}
CleanupStack::PopAndDestroy(2);
}
GLDEF_C TInt E32Main()
{
__UHEAP_MARK; // mark heap state
CTrapCleanup* cleanup=CTrapCleanup::New();
TRAPD(error, ReadAndWriteArgsL());
__ASSERT_ALWAYS(!error, User::Invariant());
delete cleanup;
__UHEAP_MARKEND;
return 0;
}
If Application Name is TestCmdArgs.exe, launch it as TestCmdArgs.exe Nokia India Pvt Ltd from command prompt And the output will be
Arg 1 == Nokia
Arg 2 == India
Arg 3 == Pvt
Arg 4 == Ltd
Girish
| Attachment | Size |
|---|---|
| Example.txt | 714 bytes |
> Using Command Line Arguments in Symbian