DWORDdwStyle;// WS_CHILD and WS_VISIBLE are automatically applied.
HINSTANCEhInstance;
// These are called when the control sends a WM_COMMAND or WM_NOTIFY (respectively) to its parent.
// ui redirects the message back and calls these functions.
// Store the result in the LRESULT pointer and return TRUE to return the given result; return FALSE to pass the notification up to your window procedure.
// Note that these are only issued if they come from the uiControl itself; notifications from children of the uiControl (such as a header control) will be received normally.