Morse code. Some examples of how to produce sounds.

//{{NO_DEPENDENCIES}}
// Microsoft Developer Studio generated include file.
// Used by Morse.rc
//
#define IDM_ABOUTBOX                    0x0010
#define IDD_ABOUTBOX                    100
#define IDS_ABOUTBOX                    101
#define IDD_Morse_DIALOG                102
#define IDR_MAINFRAME                   128
#define IDC_EDIT1                       1000
#define IDC_EDIT2                       1001
#define IDC_SHORT                       1002
#define IDC_LONG                        1003
#define IDC_DELAY                       1004
#define IDC_FREQ                        1005
#define IDC_BUTTON1                     1006

// Next default values for new objects
//
#ifdef APSTUDIO_INVOKED
#ifndef APSTUDIO_READONLY_SYMBOLS
#define _APS_NEXT_RESOURCE_VALUE        130
#define _APS_NEXT_COMMAND_VALUE         32771
#define _APS_NEXT_CONTROL_VALUE         1007
#define _APS_NEXT_SYMED_VALUE           101
#endif
#endif