Functions for handling the Controllable changed event.  
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Functions for handling the Controllable changed event. 
Set callback function which is called when the generator controllable property changes. 
- Parameters
 - 
  
    | hDevice | A device handle.  | 
    | pCallback | Pointer to callback function.  | 
    | pData | Optional user data.  | 
  
   
- Since
 - 0.4.0 
 
 
 
Set event file descriptor which is set when the generator controllable property changes. 
- Parameters
 - 
  
  
 
- Note
 - This function is only available on GNU/Linux. 
 
- Since
 - 0.4.0 
 
 
 
Set event object handle which is set when the generator controllable property changes. 
- Parameters
 - 
  
  
 
- Note
 - This function is only available on Windows. 
 
- Since
 - 0.4.0 
 
 
 
      
        
          | void GenSetMessageControllableChanged  | 
          ( | 
          TpDeviceHandle_t  | 
          hDevice,  | 
        
        
           | 
           | 
          HWND  | 
          hWnd,  | 
        
        
           | 
           | 
          WPARAM  | 
          wParam,  | 
        
        
           | 
           | 
          LPARAM  | 
          lParam  | 
        
        
           | 
          ) | 
           |  | 
        
      
 
Set window handle to which a WM_LIBTIEPIE_GEN_CONTROLLABLECHANGED message is sent when the generator controllable property changes. 
- Parameters
 - 
  
    | hDevice | A Opening a device "device handle".  | 
    | hWnd | A handle to the window whose window procedure is to receive the message. Use NULL to disable.  | 
    | wParam | Optional user value for the messages wParam.  | 
    | lParam | Optional user value for the messages lParam.  | 
  
   
- Note
 - This function is only available on Windows. 
 
- Since
 - 0.4.0