# DM_USER

The DM_USER message is intended to specify the starting value for user-defined messages.

### Param1

User-defined value.

### Param2

User-defined value.

### Return

User-defined value.

### Controls

Control | Description
--- | ---
All | All dialog items

### Remarks

### Example

    #define DMREV_RESULT DM_USER+1

    LONG_PTR WINAPI ReversiDialogProc(HANDLE hDlg, int Msg,int Param1,LONG_PTR Param2)
    {
    ...
        Info.SendDlgMessage(hDlg,DMREV_RESULT,0,0);
    ...
        case DMREV_RESULT: // user's definition
          ...
          return 0;
    ...
    }

See also:
DialogEx