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**OCXREGISTERPROPCHANGE(** //control// , //procedure// **)**

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| **OCXREGISTERPROPCHANGE** | Installs a property change callback procedure. |
| //control// | An integer expression containing the field number or field equate label of the OLE control to affect. |
| //procedure// | The label of the property change callback procedure for the //control//. |

**OCXREGISTERPROPCHANGE** installs a property change callback //procedure// for the //control.// The callback //procedure// is called when a property of the //control// has been changed.

**Example:**

**OCXREGISTERPROPCHANGE(?OleControl,CallbackProc)**

**See Also:**

[[callback functions.htm|Callback Functions]]