Subclassing ActiveX 1.0

enables the subclassing of window forms, i.e. the execution of their messages

Enables the subclassing of window forms, that means the interception and execution of their messages. The system administered messages can be supplemented or substituted.

The control element accomplishes a subclassing for a window stated by its handle. The window function is the function of a window, which completely determines the behavior of the window (and thus the reaction of the window to user inputs). This window function is replaced by another function by the Subclassing component. This function then can be freely defined in the Message event of the Subclassing control element (MS Windows API programming). It is possible to either replace (StopMessage = True) or only to supplement the original window function (StopMessage = False). The latter aspect is called also Superclassing.

Subclassing ActiveX 1.0 Tags:
subclassing window form messages window function superclassing activex