hey people,i want to get data from edit and show to the user,

For most window interaction SendMessage is your friend. In this case GetWindowText might help.

On a side note, this forum is meant to help you with problems you can't solve yourself. It is not a replacement for google or a decent C++ reference or MSDN.

DWORD WINAPI GenerateSerial(HWND hwnd){
	unsigned char name[MAX_NAME];
	char serial[MAX_SERIAL];
	memset(serial,0,MAX_SERIAL);	if(GetDlgItemText(hwnd,IDC_NAME,(char*)name,MAX_NAME)<MIN_NAME)
	{
		SetDlgItemText(hwnd, IDC_SERIAL,"Please enter a longer name...");
		return 1;
	}
	process_serial((char*)name, serial);
	SetDlgItemText(hwnd, IDC_SERIAL,serial);
	return 0;
}