152 lines
6.8 KiB
C
152 lines
6.8 KiB
C
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#ifndef __HANDLERS_H__
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#define __HANDLERS_H__
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//---------------------------------------------------------------------------//
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#define _MSG_SWITCH_ // determines handler selection implementation
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// (switch block vs. linear array search (vs. hash table lookup?) )
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//-------------------//
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// Forwards
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class CThemeWnd;
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struct _NCTHEMEMET;
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typedef struct _NCTHEMEMET NCTHEMEMET;
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//---------------------------------------------------------------------------
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// Hook modification
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BOOL ApiHandlerInit( const LPCTSTR pszTarget, USERAPIHOOK* puahTheme, const USERAPIHOOK* puahReal );
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//---------------------------------------------------------------------------
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// Window message handler support
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//---------------------------------------------------------------------------
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//---------------------------------------------------------------------------
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typedef enum _MSGTYPE
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{
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MSGTYPE_PRE_WNDPROC, // pre-wndproc override
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MSGTYPE_POST_WNDPROC, // post-wndproc override
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MSGTYPE_PRE_DEFDLGPROC, // pre-DefDlgProc override
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MSGTYPE_POST_DEFDLGPROC,// post-DefDlgProc override
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MSGTYPE_DEFWNDPROC, // DefWindowProc hook.
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}MSGTYPE;
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//---------------------------------------------------------------------------
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typedef struct _THEME_MSG
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{
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HWND hwnd; // message target.
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UINT uMsg; // message id.
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WPARAM wParam; // message WPARAM
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LPARAM lParam; // message LPARAM
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MSGTYPE type; // type of message (dwp, sent, posted)
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UINT uCodePage; // message codepage. This will invariably be CP_WINUNICODE for
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// a message processed via the wide-char defwindowproc, or
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// the current user default codepage for messages passed through
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// the ansi defwindowproc.
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WNDPROC pfnDefProc; // address of function handler should call to do default processing
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LRESULT lRet; // Post overrides only: msg result from default handler.
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BOOL fHandled; // handler should set this value.
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}THEME_MSG, *PTHEME_MSG;
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//---------------------------------------------------------------------------
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// Message handler prototype
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typedef LRESULT (CALLBACK * HOOKEDMSGHANDLER)(CThemeWnd* pwnd, THEME_MSG *ptm );
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//---------------------------------------------------------------------------
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// Message handler array element
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typedef struct _MSGENTRY
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{
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UINT nMsg; // message identifier (zero if registered message)
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UINT *pnRegMsg; // address of registered message var (NULL if stock message)
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HOOKEDMSGHANDLER pfnHandler; // primary handler
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HOOKEDMSGHANDLER pfnHandler2; // secondary handler (optional for DWP, WH handlers)
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} MSGENTRY, *PMSGENTRY;
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//---------------------------------------------------------------------------
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// Performs default processing on the message
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LRESULT WINAPI DoMsgDefault( const THEME_MSG* ptm );
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//---------------------------------------------------------------------------
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inline void WINAPI MsgHandled( const THEME_MSG *ptm, BOOL fHandled = TRUE ) {
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((PTHEME_MSG)ptm)->fHandled = fHandled;
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}
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//---------------------------------------------------------------------------
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// message mask helpers
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#define MAKE_MSGBIT( nMsg ) ((BYTE)(1 << (nMsg & 7)))
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#define SET_MSGMASK( prgMsgMask, nMsg ) (prgMsgMask[nMsg/8] |= MAKE_MSGBIT(nMsg))
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#define CLEAR_MSGMASK( prgMsgMask, nMsg ) (prgMsgMask[nMsg/8] &= ~MAKE_MSGBIT(nMsg))
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#define CHECK_MSGMASK( prgMsgMask, nMsg ) ((prgMsgMask[nMsg/8] & MAKE_MSGBIT(nMsg)) != 0)
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//---------------------------------------------------------------------------//
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// Message handler table access
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extern void HandlerTableInit();
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DWORD GetOwpMsgMask( LPBYTE* prgMsgList );
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DWORD GetDdpMsgMask( LPBYTE* prgMsgList );
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DWORD GetDwpMsgMask( LPBYTE* prgMsgList );
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BOOL FindOwpHandler( UINT uMsg,
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OUT OPTIONAL HOOKEDMSGHANDLER* ppfnPre,
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OUT OPTIONAL HOOKEDMSGHANDLER* ppfnPost );
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BOOL FindDdpHandler( UINT uMsg,
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OUT OPTIONAL HOOKEDMSGHANDLER* ppfnPre,
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OUT OPTIONAL HOOKEDMSGHANDLER* ppfnPost );
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BOOL FindDwpHandler( UINT uMsg,
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OUT OPTIONAL HOOKEDMSGHANDLER* ppfn );
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//---------------------------------------------------------------------------//
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// table decl helpers
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#define DECL_MSGHANDLER(handler) LRESULT CALLBACK handler(CThemeWnd*, THEME_MSG *)
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#define DECL_REGISTERED_MSG(msg) extern UINT msg;
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#define BEGIN_HANDLER_TABLE(rgEntries) static MSGENTRY rgEntries[] = {
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#define END_HANDLER_TABLE() };
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#define DECL_MSGENTRY(msg,pfnPre,pfnPost) {msg, NULL, pfnPre, pfnPost},
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//---------------------------------------------------------------------------
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// SystemParametersInfo handler support
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//---------------------------------------------------------------------------
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//---------------------------------------------------------------------------
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// SystemParametersInfo handler prototype
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typedef BOOL (CALLBACK * SPIHANDLER)(
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NCTHEMEMET *pnctm,
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IN UINT uiAction, IN UINT uiParam, IN OUT PVOID pvParam, IN UINT fWinIni,
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SYSTEMPARAMETERSINFO pfnDefault, BOOL& fHandled );
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BOOL FindSpiHandler( IN UINT uiAction, OUT SPIHANDLER* pfnHandler );
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//---------------------------------------------------------------------------//
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// table decl helpers
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#define DECL_SPIHANDLER(handler) BOOL CALLBACK handler(NCTHEMEMET*, UINT, UINT, PVOID, UINT, SYSTEMPARAMETERSINFO, BOOL& )
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#define BEGIN_SPIHANDLER_TABLE() BOOL FindSpiHandler( UINT uiAction, SPIHANDLER* pfnHandler ) {\
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switch(uiAction){
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#define DECL_SPIENTRY(uiAction, handler) case uiAction: {*pfnHandler = handler; return TRUE;}
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#define END_SPIHANDLER_TABLE() }return FALSE;}
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//---------------------------------------------------------------------------
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// GetSystemMetrics handler support
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//---------------------------------------------------------------------------
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//---------------------------------------------------------------------------
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// GetSystemMetrics handler prototype
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typedef int (CALLBACK * GSMHANDLER)(
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NCTHEMEMET *pnctm, IN int iMetric,
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GETSYSTEMMETRICSPROC pfnDefault, BOOL& fHandled );
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typedef struct _GSMENTRY {
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int iMetric;
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GSMHANDLER pfnHandler;
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} GSMENTRY;
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BOOL FindGsmHandler( IN int iMetric, OUT GSMHANDLER* pfnHandler );
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#define DECL_GSMHANDLER(handler) int CALLBACK handler(NCTHEMEMET*, int, GETSYSTEMMETRICSPROC, BOOL& )
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#define BEGIN_GSMHANDLER_TABLE(rgEntries) static GSMENTRY rgEntries[] = {
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#define END_GSMHANDLER_TABLE() };
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#define DECL_GSMENTRY(iMetric, handler) {iMetric, handler},
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#endif __HANDLERS_H__
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