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-
- #include <windows.h>
- #include "server.h"
- #include "time.h"
-
-
- #if defined (WIN32)
- #define IS_WIN32 TRUE
- #else
- #define IS_WIN32 FALSE
- #endif
-
- #define IS_NT IS_WIN32 && (BOOL)(GetVersion() < 0x80000000)
- #define IS_WIN32S IS_WIN32 && (BOOL)(!(IS_NT) && (LOBYTE(LOWORD(GetVersion()))<4))
- #define IS_WIN95 (BOOL)(!(IS_NT) && !(IS_WIN32S)) && IS_WIN32
-
- HINSTANCE hInst; // current instance
-
- LPCTSTR lpszAppName = "MyApp";
- LPCTSTR lpszTitle = "DDE Server";
-
-
- BOOL RegisterWin95( CONST WNDCLASS* lpwc );
-
-
- int APIENTRY WinMain( HINSTANCE hInstance, HINSTANCE hPrevInstance,
- LPTSTR lpCmdLine, int nCmdShow)
- {
- MSG msg;
- HWND hWnd;
- WNDCLASS wc;
-
- wc.style = CS_HREDRAW | CS_VREDRAW;
- wc.lpfnWndProc = (WNDPROC)WndProc;
- wc.cbClsExtra = 0;
- wc.cbWndExtra = 0;
- wc.hInstance = hInstance;
- wc.hIcon = LoadIcon (hInstance, lpszAppName);
- wc.hCursor = LoadCursor(NULL, IDC_ARROW);
- wc.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
- wc.lpszMenuName = lpszAppName;
- wc.lpszClassName = lpszAppName;
-
- if ( IS_WIN95 )
- {
- if ( !RegisterWin95( &wc ) )
- return( FALSE );
- }
- else if ( !RegisterClass( &wc ) )
- return( FALSE );
-
- hInst = hInstance;
-
- hWnd = CreateWindow( lpszAppName,
- lpszTitle,
- WS_OVERLAPPEDWINDOW,
- CW_USEDEFAULT, 0,
- CW_USEDEFAULT, 0,
- NULL,
- NULL,
- hInstance,
- NULL
- );
-
- if ( !hWnd )
- return( FALSE );
-
- ShowWindow( hWnd, nCmdShow );
- UpdateWindow( hWnd );
-
- while( GetMessage( &msg, NULL, 0, 0) )
- {
- TranslateMessage( &msg );
- DispatchMessage( &msg );
- }
-
- return( msg.wParam );
- }
-
-
- BOOL RegisterWin95( CONST WNDCLASS* lpwc )
- {
- WNDCLASSEX wcex;
-
- wcex.style = lpwc->style;
- wcex.lpfnWndProc = lpwc->lpfnWndProc;
- wcex.cbClsExtra = lpwc->cbClsExtra;
- wcex.cbWndExtra = lpwc->cbWndExtra;
- wcex.hInstance = lpwc->hInstance;
- wcex.hIcon = lpwc->hIcon;
- wcex.hCursor = lpwc->hCursor;
- wcex.hbrBackground = lpwc->hbrBackground;
- wcex.lpszMenuName = lpwc->lpszMenuName;
- wcex.lpszClassName = lpwc->lpszClassName;
-
- // Added elements for Windows 95.
- //...............................
- wcex.cbSize = sizeof(WNDCLASSEX);
- wcex.hIconSm = LoadImage(wcex.hInstance, lpwc->lpszClassName,
- IMAGE_ICON, 16, 16,
- LR_DEFAULTCOLOR );
-
- return RegisterClassEx( &wcex );
- }
-
- HDDEDATA CALLBACK DdemlCallback( UINT uType,
- UINT uFmt,
- HCONV hconv,
- HSZ hsz1,
- HSZ hsz2,
- HDDEDATA hdata,
- DWORD dwData1,
- DWORD dwData2 );
-
-
- DWORD ddeInst = 0;
- HSZ hszService = NULL;
- HSZ hszTopic1 = NULL;
- HSZ hszTopic2 = NULL;
- HSZ hszTopic3 = NULL;
- HSZ hszItem = NULL;
-
- LRESULT CALLBACK WndProc( HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam )
- {
- switch( uMsg )
- {
- case WM_CREATE :
- // Initialize DDEML.
- //..................
- if ( DdeInitialize( &ddeInst, DdemlCallback,
- APPCLASS_STANDARD, 0 ) != DMLERR_NO_ERROR )
- {
- MessageBox( hWnd, "Could not initialize DDEML.",
- NULL, MB_OK | MB_ICONSTOP );
- return( -1 );
- }
-
- // Allocate strings.
- //..................
- hszService = DdeCreateStringHandle( ddeInst,"Server",CP_WINANSI );
- hszTopic1 = DdeCreateStringHandle( ddeInst,"Data",CP_WINANSI );
- hszTopic2 = DdeCreateStringHandle( ddeInst,"Msg",CP_WINANSI );
- hszTopic3 = DdeCreateStringHandle( ddeInst,"Time",CP_WINANSI );
- hszItem = DdeCreateStringHandle( ddeInst,"TimeItem",CP_WINANSI );
-
- DdeNameService( ddeInst, hszService, 0L, DNS_REGISTER );
- break;
-
- case WM_COMMAND :
- switch( LOWORD( wParam ) )
- {
- case IDM_ENABLE :
- DdeEnableCallback( ddeInst, NULL, EC_ENABLEONE );
- break;
-
- case IDM_DISABLE :
- DdeEnableCallback( ddeInst, NULL, EC_DISABLE );
- break;
-
- case IDM_ABOUT :
- DialogBox( hInst, "AboutBox", hWnd, (DLGPROC)About );
- break;
-
- case IDM_EXIT :
- DestroyWindow( hWnd );
- break;
- }
- break;
-
- case WM_DESTROY :
- DdeNameService( ddeInst, hszService, 0L, DNS_UNREGISTER );
-
- DdeFreeStringHandle( ddeInst, hszService );
- DdeFreeStringHandle( ddeInst, hszTopic1 );
- DdeFreeStringHandle( ddeInst, hszTopic2 );
- DdeFreeStringHandle( ddeInst, hszTopic3 );
- DdeFreeStringHandle( ddeInst, hszItem );
-
- DdeUninitialize( ddeInst );
- PostQuitMessage(0);
- break;
-
- default :
- return( DefWindowProc( hWnd, uMsg, wParam, lParam ) );
- }
-
- return( 0L );
- }
-
-
- VOID CALLBACK TimeProc( HWND hwnd,
- UINT uMsg,
- UINT idEvent,
- DWORD dwTime )
- {
- DdePostAdvise( ddeInst, hszTopic3, hszItem );
- }
-
-
- HDDEDATA CALLBACK DdemlCallback( UINT uType,
- UINT uFmt,
- HCONV hconv,
- HSZ hsz1,
- HSZ hsz2,
- HDDEDATA hdata,
- DWORD dwData1,
- DWORD dwData2 )
- {
- static LPBYTE lpMsg = NULL;
- static UINT uTimerID = 0;
-
- switch( uType )
- {
- case XTYP_CONNECT :
- if ( DdeCmpStringHandles( hsz2, hszService ) )
- break;
-
- if ( DdeCmpStringHandles( hsz1, hszTopic1 ) &&
- DdeCmpStringHandles( hsz1, hszTopic2 ) &&
- DdeCmpStringHandles( hsz1, hszTopic3 ) )
- {
- break;
- }
-
- // Allow the conversation.
- //........................
- return( (HDDEDATA)TRUE );
-
- case XTYP_REQUEST :
- if ( !DdeCmpStringHandles( hsz1, hszTopic1 ) )
- {
- HDDEDATA hData = DdeCreateDataHandle( ddeInst, NULL, 50, 0,
- hszTopic2, CF_TEXT, 0 );
- if ( hData )
- {
- SHORT i, offs;
- char szTmp[3];
-
- hData = DdeAddData( hData, "Data: ", 6, 0 );
- offs = 6;
-
- for( i=0; i<10; i++ )
- {
- itoa( i, szTmp, 10 );
- hData = DdeAddData( hData, szTmp, strlen( szTmp ), offs );
- offs += strlen( szTmp );
- }
- szTmp[0] = 0;
- hData = DdeAddData( hData, szTmp, 1, offs );
-
- return( hData );
- }
- return( NULL );
- }
- return( NULL );
-
-
- case XTYP_EXECUTE :
- if ( lpMsg )
- return( (HDDEDATA)DDE_FBUSY );
-
- if ( !DdeCmpStringHandles( hsz1, hszTopic2 ) )
- {
- lpMsg = DdeAccessData( hdata, NULL );
-
- MessageBox( NULL, lpMsg, "DDE Message", MB_OK );
-
- DdeUnaccessData( hdata );
- lpMsg = NULL;
-
- return( (HDDEDATA)DDE_FACK );
- }
-
- return( (HDDEDATA)DDE_FNOTPROCESSED );
-
-
- case XTYP_ADVSTART :
- if ( DdeCmpStringHandles( hsz1, hszTopic3 ) == 0 &&
- DdeCmpStringHandles( hsz2, hszItem ) == 0 )
- {
- uTimerID = SetTimer( NULL, 0, 1000, (TIMERPROC)TimeProc );
- return( (HDDEDATA)TRUE );
- }
-
- return( FALSE );
-
- case XTYP_ADVREQ :
- if ( DdeCmpStringHandles( hsz1, hszTopic3 ) == 0 &&
- DdeCmpStringHandles( hsz2, hszItem ) == 0 )
- {
- time_t ltime;
- char szBuf[128];
- HDDEDATA hDdeData;
-
- HSZ hszDataName = DdeCreateStringHandle( ddeInst,
- "Hour", CP_WINANSI );
- time( <ime );
- wsprintf( szBuf, "The time is now: %s ",
- (LPTSTR)ctime(<ime) );
-
- hDdeData = DdeCreateDataHandle( ddeInst, szBuf,
- strlen( szBuf )+1, 0,
- hszDataName, CF_TEXT, 0 );
-
- DdeFreeStringHandle( ddeInst, hszDataName );
- return( hDdeData );
- }
- return( NULL );
-
- case XTYP_ADVSTOP :
- KillTimer( NULL, uTimerID );
- break;
-
- }
-
- return( NULL );
- }
-
-
- LRESULT CALLBACK About( HWND hDlg,
- UINT message,
- WPARAM wParam,
- LPARAM lParam)
- {
- switch (message)
- {
- case WM_INITDIALOG:
- return (TRUE);
-
- case WM_COMMAND:
- if ( LOWORD(wParam) == IDOK
- || LOWORD(wParam) == IDCANCEL)
- {
- EndDialog(hDlg, TRUE);
- return (TRUE);
- }
- break;
- }
-
- return (FALSE);
- }
-