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/*******************************************************************************
** (C) COPYRIGHT MICROSOFT CORPORATION, 1998** TITLE: SIMCRACK.H** VERSION: 1.0** AUTHOR: ShaunIv** DATE: 5/11/1998** DESCRIPTION: Simple Message-crackers********************************************************************************/#ifndef ___SIMCRACK_H_INCLUDED
#define ___SIMCRACK_H_INCLUDED
// Define these if we're compiling on pre-sundown prepared compiler
#if !defined(GWLP_USERDATA)
#define GWLP_USERDATA GWL_USERDATA
#define GWLP_WNDPROC GWL_WNDPROC
#define DWLP_USER DWL_USER
#define DWLP_MSGRESULT DWL_MSGRESULT
#define SetWindowLongPtr SetWindowLong
#define GetWindowLongPtr GetWindowLong
#define INT_PTR LONG
#endif
#if (0) // Examples
/****************************************
EXAMPLE USAGE
****************************************/// Normal message handlers for normal windows
LRESULT CALLBACK CMyWindow::WndProc( HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam ){ SC_BEGIN_MESSAGE_HANDLERS(CMyWindow) { SC_HANDLE_MESSAGE( WM_SIZE, OnSize ); SC_HANDLE_MESSAGE( WM_SETFOCUS, OnSetFocus ); SC_FORWARD_MESSAGE( WM_CLOSE, hWnd ); } SC_HANDLE_REGISTERED_MESSAGE(MyMessage,MyMessageHandler); SC_END_MESSAGE_HANDLERS();}
// For use in dialog boxes (handles DWLP_MSGRESULT, etc)
BOOL CALLBACK CMyDialog::DialogProc( HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam ){ SC_BEGIN_DIALOG_MESSAGE_HANDLERS(CMyDialog) { SC_HANDLE_DIALOG_MESSAGE( WM_INITDIALOG, OnInitDialog ); SC_HANDLE_DIALOG_MESSAGE( WM_COMMAND, OnCommand ); } SC_HANDLE_REGISTERED_DIALOG_MESSAGE( MyMessage, MyMessageHandler ); SC_END_DIALOG_MESSAGE_HANDLERS();}
// WM_NOTIFY message cracker usage:
LRESULT CMyWindow::OnNotify( WPARAM wParam, LPARAM lParam ){ SC_BEGIN_NOTIFY_MESSAGE_HANDLERS() { SC_HANDLE_NOTIFY_MESSAGE_CODE(PSN_SETACTIVE,OnSetActive); SC_HANDLE_NOTIFY_MESSAGE_CONTROL(LVN_DBLCLK,IDC_LIST,OnListDblClk); } SC_END_NOTIFY_MESSAGE_HANDLERS();}
// WM_COMMAND message cracker usage:
LRESULT CMyWindow::OnCommand( WPARAM wParam, LPARAM lParam ){ SC_BEGIN_COMMAND_HANDLERS() { SC_HANDLE_COMMAND_NOTIFY(EN_CHANGE,IDC_EDIT,OnEditChange); SC_HANDLE_COMMAND(IDOK,OnOK); } SC_END_COMMAND_HANDLERS();}
/*
For an example of a complete class structured to use this method of window encapsulation,look at the bottom of the file.*/
#endif // Examples
/****************************************
IMPLEMENTATION
****************************************/
/****************************************
Normal message handlers for normal windows****************************************/#define SC_BEGIN_MESSAGE_HANDLERS(className) \
className *This = (className*)GetWindowLongPtr(hWnd,GWLP_USERDATA);\ if (WM_CREATE == uMsg)\ {\ This = new className(hWnd);\ SetWindowLongPtr(hWnd,GWLP_USERDATA,(INT_PTR)This);\ }\ else if (WM_NCDESTROY == uMsg)\ {\ delete This;\ This = NULL;\ SetWindowLongPtr(hWnd,GWLP_USERDATA,0);\ }\ switch (uMsg)
#define SC_HANDLE_MESSAGE(msg,handler) \
case (msg):\ {\ if (This)\ return This->handler( wParam, lParam );\ }\ break
#define SC_FORWARD_MESSAGE(msg,hwndForward)\
case (msg):\ {\ return SendMessage( hwndForward, msg, wParam, lParam );\ }\ break
#define SC_END_MESSAGE_HANDLERS() \
return (DefWindowProc(hWnd,uMsg,wParam,lParam))
#define SC_HANDLE_REGISTERED_MESSAGE(msg,handler)\
if (This && uMsg == This->msg)\ {\ return This->handler( wParam, lParam );\ }
/****************************************
Normal message handlers for reference counted windows****************************************/#define SC_BEGIN_REFCOUNTED_MESSAGE_HANDLERS(className) \
className *This = (className*)GetWindowLongPtr(hWnd,GWLP_USERDATA);\ if (WM_CREATE == uMsg)\ {\ This = new className(hWnd);\ SetWindowLongPtr(hWnd,GWLP_USERDATA,(INT_PTR)This);\ }\ else if (WM_NCDESTROY == uMsg)\ {\ if (This)\ {\ This->Release();\ This = NULL;\ }\ SetWindowLongPtr(hWnd,GWLP_USERDATA,0);\ }\ switch (uMsg)
#define SC_HANDLE_MESSAGE(msg,handler) \
case (msg):\ {\ if (This)\ return This->handler( wParam, lParam );\ }\ break
#define SC_FORWARD_MESSAGE(msg,hwndForward)\
case (msg):\ {\ return SendMessage( hwndForward, msg, wParam, lParam );\ }\ break
#define SC_END_MESSAGE_HANDLERS() \
return (DefWindowProc(hWnd,uMsg,wParam,lParam))
#define SC_HANDLE_REGISTERED_MESSAGE(msg,handler)\
if (This && uMsg == This->msg)\ {\ return This->handler( wParam, lParam );\ }
/****************************************
Dialog box message crackers****************************************/#define SC_BEGIN_DIALOG_MESSAGE_HANDLERS(className) \
UINT_PTR bRes = FALSE;\ className *This = (className *)GetWindowLongPtr(hWnd,DWLP_USER);\ if (WM_INITDIALOG == uMsg)\ {\ This = new className( hWnd );\ SetWindowLongPtr(hWnd,DWLP_USER,(INT_PTR)This);\ }\ else if (WM_NCDESTROY == uMsg)\ {\ if (This)\ delete This;\ This = NULL;\ SetWindowLongPtr(hWnd,DWLP_USER,(INT_PTR)This);\ }\ switch (uMsg)
#define SC_HANDLE_DIALOG_MESSAGE(msg,handler) \
case (msg):\ {\ if (This)\ {\ LRESULT lRes = This->handler( wParam, lParam );\ if (WM_INITDIALOG==msg)\ {\ bRes = (UINT_PTR)(!lRes);\ }\ else if (WM_CTLCOLORBTN==msg || WM_CTLCOLORDLG==msg || WM_CTLCOLOREDIT==msg || WM_CTLCOLORLISTBOX==msg || WM_CTLCOLORMSGBOX==msg || WM_CTLCOLORSCROLLBAR==msg || WM_CTLCOLORSTATIC==msg)\ {\ bRes = (UINT_PTR)(lRes);\ }\ else bRes = true;\ SetWindowLongPtr( hWnd, DWLP_MSGRESULT, (INT_PTR)lRes );\ }\ }\ break
#define SC_HANDLE_REGISTERED_DIALOG_MESSAGE(msg,handler)\
if (This && uMsg == This->msg)\ {\ LRESULT lRes = This->handler( wParam, lParam );\ SetWindowLongPtr( hWnd, DWLP_MSGRESULT, (INT_PTR)lRes );\ bRes = true;\ }
#define SC_END_DIALOG_MESSAGE_HANDLERS() \
return (bRes)
/****************************************
WM_NOTIFY message crackers****************************************/#define SC_BEGIN_NOTIFY_MESSAGE_HANDLERS()
#define SC_HANDLE_NOTIFY_MESSAGE_CODE(_code,proc)\
if ((_code) == ((LPNMHDR)lParam)->code)\ return proc( wParam, lParam )
#define SC_HANDLE_NOTIFY_MESSAGE_CONTROL(_code,id,proc)\
if ((_code) == ((LPNMHDR)lParam)->code && (id) == (int)wParam)\ return proc( wParam, lParam )
#define SC_END_NOTIFY_MESSAGE_HANDLERS()\
return 0;
/****************************************
WM_COMMAND message crackers****************************************/#define SC_BEGIN_COMMAND_HANDLERS()
#define SC_HANDLE_COMMAND_NOTIFY(nCode,nIdCtl,handler)\
if (nCode==(int)HIWORD(wParam) && nIdCtl==(int)LOWORD(wParam))\ {\ handler( wParam, lParam );\ return (0);\ }
#define SC_HANDLE_COMMAND(nIdCtl,handler)\
if (nIdCtl==(int)LOWORD(wParam))\ {\ handler( wParam, lParam );\ return (0);\ }
#define SC_END_COMMAND_HANDLERS()\
return (0)
#if (0) // More examples
class CMyWindow{private: HWND m_hWnd;
private: explicit CHideWindow( HWND hWnd ) : m_hWnd(hWnd) { }
public: ~CMyWindow(void) { }
// Standard Windows Message Handlers
LRESULT OnCreate( WPARAM wParam, LPARAM lParam ) { return 0; }
// WM_COMMAND Handlers
void OnEditChange( WPARAM wParam, LPARAM lParam ) { }
void OnOK( WPARAM wParam, LPARAM lParam ) { }
// WM_NOTIFY Handlers
LRESULT OnSetActive( WPARAM wParam, LPARAM lParam ) { return 0; }
LRESULT OnListDblClk( WPARAM wParam, LPARAM lParam ) { return 0; }
LRESULT OnNotify( WPARAM wParam, LPARAM lParam ) { SC_BEGIN_NOTIFY_MESSAGE_HANDLERS() { SC_HANDLE_NOTIFY_MESSAGE_CODE(PSN_SETACTIVE,OnSetActive); SC_HANDLE_NOTIFY_MESSAGE_CONTROL(LVN_DBLCLK,IDC_LIST,OnListDblClk); } SC_END_NOTIFY_MESSAGE_HANDLERS(); }
LRESULT OnCommand( WPARAM wParam, LPARAM lParam ) { SC_BEGIN_COMMAND_HANDLERS() { SC_HANDLE_COMMAND_NOTIFY(EN_CHANGE,IDC_EDIT,OnEditChange); SC_HANDLE_COMMAND(IDOK,OnOK); } SC_END_COMMAND_HANDLERS(); }
static LRESULT CALLBACK WndProc( HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam ) { SC_BEGIN_MESSAGE_HANDLERS(CMyWindow) { SC_HANDLE_MESSAGE( WM_CREATE, OnCreate ); } SC_END_MESSAGE_HANDLERS(); }};
#endif // More examples
#endif // ___SIMCRACK_H_INCLUDED
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