Labels:text | screenshot | diagram | line | font | number OCR: MESSAGE TREE WINDOW EVENT NOTIFICATION OF EVENT SYSTEM EVENT CHILD WINDOW GENERIC SPECIFIC (WM_USER) WM_COMPACTING WM_COMMAND WM_ENDSESSION (CBN_EN_LBN _, WM_ENTERIDLE WM_PARENTNOTIFY WM_FONTCHANGE WM_CTLCOLOR ** WINDOW CONTROL DIALOG WM_POWER WM_GETDLGCODE ** WM_(1) BM DM_SETDEFID WM_QUERYENDSESSION CB DM_GETDEFID WM_SPOOLERSTATUS EM_ WM_SYSCOLORCHANGE LB_ WM_SYSTEMERROR STM_ WM_TIMECHANGE WM_VSCROLL WM_TIMER WM_HSCROLL WM_WININICHANGE Generic window messages (WM _* ) can be sent (by Windows, the application, or both) to any window, regardless of its class, whereas control and dialog-specific messages can only be sent to a window regardless of its class. This list excludes all system event notification messages prefixed with WM ". ** "Soft" notification messages.