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Create_Accel.cpp
Upload User: dq031136
Upload Date: 2022-08-08
Package Size: 802k
Code Size: 8k
Category:
Visual C++ Books
Development Platform:
C++ Builder
- #include <windows.h>
- #include "Create_Accel.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 = "My Application";
- HACCEL hAccel = NULL;
- BOOL RegisterWin95( CONST WNDCLASS* lpwc );
- int APIENTRY WinMain( HINSTANCE hInstance, HINSTANCE hPrevInstance,
- LPTSTR lpCmdLine, int nCmdShow)
- {
- MSG msg;
- HWND hWnd;
- WNDCLASS wc;
- // Register the main application window class.
- //............................................
- 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;
- // Create the main application window.
- //....................................
- 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) )
- {
- if ( !hAccel || !TranslateAccelerator( hWnd, hAccel, &msg ) )
- {
- 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 );
- }
- #define IDM_NEWBASE 300
- VOID AddNewTestItem( HWND hWnd )
- {
- static int nNum = 0;
- char szMenuItem[20];
- HMENU hMenu = GetMenu( hWnd );
- ACCEL* pAccelData = NULL;
- ACCEL* pCurAccel = NULL;
- HANDLE hAccelData = NULL;
- int nNumAccel = 1;
- // Maximum of 4 new items allowed.
- //................................
- if ( nNum == 4 )
- return;
- // If accelerator table exists, get the number of items.
- //......................................................
- if ( hAccel )
- {
- nNumAccel = CopyAcceleratorTable( hAccel, NULL, 0 ) + 1;
- }
- // Allocate an array of ACCEL structures.
- //.......................................
- hAccelData = GlobalAlloc( GHND, sizeof(ACCEL) * nNumAccel );
- if ( hAccelData )
- pAccelData = (ACCEL*)GlobalLock( hAccelData );
- // If an accelerator table exists, copy the items into
- // the newly allocated array.
- //....................................................
- if ( hAccel && pAccelData )
- {
- CopyAcceleratorTable( hAccel, pAccelData, nNumAccel-1 );
- DestroyAcceleratorTable( hAccel );
- hAccel = NULL;
- }
- // Add the new menu option and accelerator key
- //............................................
- if ( pAccelData )
- {
- // Get a pointer to the new accelerator key in
- // the array.
- //............................................
- pCurAccel = (ACCEL*)(pAccelData+nNumAccel-1);
- // Create a new menu option on the menu.
- //......................................
- nNum++;
- wsprintf( szMenuItem, "New Item&%d", nNum );
- AppendMenu( hMenu, MFT_STRING, IDM_NEWBASE+nNum, szMenuItem );
- DrawMenuBar( hWnd );
- // Set up a new accelerator of F1,F2,F3,or F4 for the
- // the new menu option.
- //...................................................
- pCurAccel->fVirt = FNOINVERT | FVIRTKEY;
- pCurAccel->cmd = IDM_NEWBASE+nNum;
- pCurAccel->key = ( nNum == 1 ? VK_F1 :
- nNum == 2 ? VK_F2 :
- nNum == 3 ? VK_F3 :
- /*default*/ VK_F4 );
- // Create the new accelerator table.
- //..................................
- hAccel = CreateAcceleratorTable( pAccelData, nNumAccel );
- GlobalUnlock( hAccelData );
- }
- if ( hAccelData )
- GlobalFree( hAccelData );
- }
- LRESULT CALLBACK WndProc( HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam )
- {
- switch( uMsg )
- {
- case WM_COMMAND :
- switch( LOWORD( wParam ) )
- {
- case IDM_TEST :
- AddNewTestItem( hWnd );
- break;
- case IDM_NEWBASE+1 :
- MessageBox( hWnd, "New Item 1 Selected", "Item Selected",
- MB_OK | MB_ICONINFORMATION );
- break;
- case IDM_NEWBASE+2 :
- MessageBox( hWnd, "New Item 2 Selected", "Item Selected",
- MB_OK | MB_ICONINFORMATION );
- break;
- case IDM_NEWBASE+3 :
- MessageBox( hWnd, "New Item 3 Selected", "Item Selected",
- MB_OK | MB_ICONINFORMATION );
- break;
- case IDM_NEWBASE+4 :
- MessageBox( hWnd, "New Item 4 Selected", "Item Selected",
- MB_OK | MB_ICONINFORMATION );
- break;
- case IDM_ABOUT :
- DialogBox( hInst, "AboutBox", hWnd, (DLGPROC)About );
- break;
- case IDM_EXIT :
- DestroyWindow( hWnd );
- break;
- }
- break;
- case WM_DESTROY :
- PostQuitMessage(0);
- break;
- default :
- return( DefWindowProc( hWnd, uMsg, wParam, lParam ) );
- }
- return( 0L );
- }
- 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);
- }