WindowSetExtraStyle window exStyle
Sets the extra style bits for the window. The currently defined extra style bits are:
wxWS_EX_VALIDATE_RECURSIVELY TransferDataTo/FromWindow() and Validate() methods will recursively descend into all children of the window if it has this style flag set.
wxWS_EX_BLOCK_EVENTS Normally, the command events are propagated upwards to the window parent recursively until a handler for them is found. Using this style allows to prevent them from being propagated beyond this window. Notice that wxDialog has this style on by default for the reasons explained in the event processing overview.
wxWS_EX_TRANSIENT This can be used to prevent a window from being used as an implicit parent for the dialogs which were created without a parent. It is useful for the windows which can disappear at any moment as creating children of such windows results in fatal problems.
wxWS_EX_CONTEXTHELP Under Windows, puts a query button on the caption. When pressed, Windows will go into a context-sensitive help mode and wxWidgets will send a wxEVT_HELP event if the user clicked on an application window. This style cannot be used together with wxMAXIMIZE_BOX or wxMINIMIZE_BOX, so these two styles are automatically turned of if this one is used.
wxWS_EX_PROCESS_IDLE This window should always process idle events, even if the mode set by wxIdleEvent::SetMode is wxIDLE_PROCESS_SPECIFIED.
wxWS_EX_PROCESS_UI_UPDATES This window should always process UI update events, even if the mode set by wxUpdateUIEvent::SetMode is wxUPDATE_UI_PROCESS_SPECIFIED.