Retrieves a pointer to the specified control or child window in a dialog box or other window.
Specifies the identifier of the control or child window to be retrieved.
A pointer to a child window.
A pointer to the given control or child window. If no control with the integer ID given by the nID parameter exists, the value is NULL.
The returned pointer may be temporary and should not be stored for later use.
The pointer returned is usually cast to the type of control identified by nID.
// uses GetDlgItem to return a pointer to a user interface control
pBoxOne = (CEdit*) GetDlgItem(IDC_EDIT1);