Casio PA-2400W Software Manual page 33

BOOL CallSip( HWND hWnd, WPARAM wId)
{
HWND hSip;
UINT CmdMessage = WM_USER;
hSip = FindWindow( ClassName_TSR, NULL);
if ( hSip == NULL) {
MessageBox( hWnd, TEXT("Error: FindWindow failed!"),
TEXT("SIPanel Sample"), MB_OK);
return FALSE;
}
switch( wId) {
case IDC_BTN_TEXT:
CmdMessage++;
case IDC_BTN_TEN:
CmdMessage++;
break;
default:
return FALSE;
}
SendMessage( hSip, CmdMessage, 0, 0);
return TRUE;
}
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// Find "SipTsr"
// Send message to SipTsr