Defining own main functions arguments argc and argv

i want to create an object of type QApplication which needs the main functions arguments argc and argv as an input:

QApplication app(argc, argv);

Since i am within a user defined function without access to the main function i want to define this arguments on my own. I have tried several approaches but i cannot get the type conversion right. My last approach did not work either:

int argc = 1;
char **argv; 
char arguments[1][12] = {{"cgalExample"}};
argv = arguments;

Thanks for any hint.