Following are the messages processed by the predefined button-control window class (WC_BUTTON). Each message is described in terms of how a button control responds to that message.
旼컴컴컴컴컴컴컴컴컴컴컴컴쩡컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� 쿘essage 쿏escription � 쳐컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� 쿍M_AUTOSIZE 쿎auses the buttons in a new-style � � 쿻otebook to automatically size to � � 쿯it their contents. � 쳐컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� 쿍M_CLICK 쿞ends a WM_BUTTON1DOWN and � � 쿥M_BUTTON1UP message to itself to � � 퀂imulate a user button selection. � 쳐컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� 쿍M_QUERYCHECK 쿝eturns the checked state of the � � 쿫utton. � 쳐컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� 쿍M_QUERYCHECKINDEX 쿝eturns the 0-based index to the � � 퀂elected button in a group. � � 쿝eturns -1 if no button in the � � 쿲roup is selected or if the button � � 퀁eceiving the message is not a � � 퀁adio button or an auto-radio � � 쿫utton. � 쳐컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� 쿍M_QUERYHILITE 쿝eturns the highlighted state of � � 퀃he button. � 쳐컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� 쿍M_SETCHECK 쿞ets the checked state of the � � 쿫utton and returns the previous � � 쿬hecked state. � 쳐컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� 쿍M_SETDEFAULT 쿞ets the default button state and � � 퀁edraws the button. � 쳐컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� 쿍M_SETHILITE 쿞ets the highlighted state of the � � 쿫utton and returns the previous � � 쿴ighlighted state. � 쳐컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� 쿥M_BUTTON1DBLCLK 쿓ighlights the button and sends a � � 쿍N_DBLCLICKED notification code � � 퀇hen the button-up message arrives.� 쳐컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� 쿥M_BUTTON1DOWN 쿞ets the button window so it can � � 쿬apture mouse input. � 쳐컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� 쿥M_BUTTON1UP 쿔f the button window is set to � � 쿬apture mouse input, and if the � � 쿺ouse pointer is inside the button � � 퀇indow when the mouse button is � � 퀁eleased, this message releases the� � 쿺ouse and sends a notification � � 쿺essage to the owner window. If the� � 쿫utton is a push button, the push � � 쿫utton control posts a WM_COMMAND � � 쿺essage; otherwise, the button � � 쿬ontrol sends a WM_CONTROL message � � 퀇ith the BN_CLICKED notification � � 쿬ode. � 쳐컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� 쿥M_CHAR 쿞ets the button window so it can � � 쿬apture mouse input when the � � 퀂pacebar is pressed; releases the � � 쿺ouse when the spacebar is � � 퀁eleased. Passes other key � � 쿺essages to the default window � � 쿾rocedure. � 쳐컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� 쿥M_CREATE 쿣alidates the requested button � � 퀂tyle and sets the window text. � 쳐컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� 쿥M_DESTROY 쿑rees the memory containing the � � 퀇indow's text. � 쳐컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� 쿥M_ENABLE 쿞ent when an application changes � � 퀃he enabled state of a window. � 쳐컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� 쿥M_MATCHMNEMONIC 쿝eturns TRUE if mp1 matches a � � 쿺nemonic in the control window's � � 퀃ext. � 쳐컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� 쿥M_MOUSEMOVE 쿞ets the default mouse pointer. If� � 퀃he button has the mouse captured, � � 퀃he button's highlighted state � � 쿬hanges as the mouse pointer moves � � 쿶n and out of the button boundary. � 쳐컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� 쿥M_PAINT 쿏raws the button according to its � � 퀂tyle and current state. � 쳐컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� 쿥M_QUERYDLGCODE 쿝eturns the DLGC_BUTTON code � � 쿬ombined with other DLGC_ codes � � 퀃hat designate the button's type. � 쳐컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� 쿥M_QUERYWINDOWPARAMS 쿝eturns the requested window � � 쿾arameters. � 쳐컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� 쿥M_SETFOCUS 쿎reates a cursor if the � � 쿫utton-control window is receiving � � 퀃he focus. Destroys the cursor if � � 퀃he button-control window is losing� � 퀃he focus. � 쳐컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� 쿥M_SETWINDOWPARAMS 쿞ets the requested window � � 쿾arameters and redraws the button, � � 쿶ncluding the cursor, if the � � 쿫utton-control window has the � � 쿯ocus. � 읕컴컴컴컴컴컴컴컴컴컴컴컴좔컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴�