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**OCXSETPARAM(** //reference// ,//number// //,value// **)**

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| **OCXSETPARAM** | Sets the value of a parameter associated with the current OCX event. |
| //reference// | The label of the first parameter of the event processing callback procedure. |
| //number// | The number of the parameter to set. |
| //value// | A string constant or variable containing the value to set. |

**OCXSETPARAM **sets the value of the //number// parameter associated with the current event. This is only allowed on parameters that are passed by address (see the OCX control's documentation for valid parameters to set). If the modification is not allowed it will be ignored. This procedure is only valid when the .OCX event processing callback function is active.

**Example:**

**OEvent  PROCEDURE(Reference,OleControl,CurrentEvent)  !Event processing callback proc**

**Count  LONG**

**Res    CSTRING(200)**

**Parm    CSTRING(30)**

** CODE**

** IF CurrentEvent <;> OCXEVENT:MouseMove                !Eliminate mouse move events**

**  Res = 'Control ' &amp; OleControl &amp; ' Event ' &amp; OleControl{PROP:LastEventName} &amp; ':'**

**  LOOP Count = 1 TO OCXGETPARAMCOUNT(Reference)       !Cycle through all parameters**

**   Parm = OCXGETPARAM(Reference,Count)                !getting each parameter name**

**   Res = CLIP(Res) &amp; ' ' &amp; Parm                       !and concatenate them together**

**   ****OCXSETPARAM****(Reference,1,'1')                       !Change the parameter's value**

**  END**

**  GlobalQue = Res                                     !Assign to a global QUEUE**

**  ADD(GlobalQue)                                      !add the entry for later display**

** END                                                  !of all the OCX events and their **

** RETURN(True)                                         !parameters**

**See Also:**

[[callback functions.htm|Callback Functions]]

[[ocxgetparam  return current event parameter string .htm|OCXGETPARAM]]