[VC(Visual C++) ]- 修改顯示器解析度
[VC(Visual C++) ]- 修改顯示器解析度
本篇分享修改顯示器解析度範例，有興趣的(C/P)同好，歡迎來http://filemarkets.com/file/jashliao/c8fa8f5d/索取，因為我不會上傳檔案分享哈哈 ^ ^。
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主要程式碼 |
001 // ChangeDisplayDlg.cpp : implementation file 002 // 003
004 #include "stdafx.h" 005 #include "ChangeDisplay.h" 006 #include "ChangeDisplayDlg.h" 007
008 #ifdef _DEBUG 009 #definenew DEBUG_NEW 010 #undef THIS_FILE 011 staticchar THIS_FILE[] = __FILE__; 012 #endif 013
014 ///////////////////////////////////////////////////////////////////////////// 015 // CAboutDlg dialog used for App About 016
017 class CAboutDlg : public CDialog 018 {
019 public: 020 CAboutDlg();
021
022 // Dialog Data 023 //{{AFX_DATA(CAboutDlg) 024 enum { IDD = IDD_ABOUTBOX }; 025 //}}AFX_DATA 026
027 // ClassWizard generated virtual function overrides 028 //{{AFX_VIRTUAL(CAboutDlg) 029 protected: 030 virtualvoid DoDataExchange(CDataExchange* pDX); // DDX/DDV support 031 //}}AFX_VIRTUAL 032
033 // Implementation 034 protected: 035 //{{AFX_MSG(CAboutDlg) 036 //}}AFX_MSG 037 DECLARE_MESSAGE_MAP()
038 };
039
040 CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
041 {
042 //{{AFX_DATA_INIT(CAboutDlg) 043 //}}AFX_DATA_INIT 044 }
045
046 void CAboutDlg::DoDataExchange(CDataExchange* pDX) 047 {
048 CDialog::DoDataExchange(pDX);
049 //{{AFX_DATA_MAP(CAboutDlg) 050 //}}AFX_DATA_MAP 051 }
052
053 BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
054 //{{AFX_MSG_MAP(CAboutDlg) 055 // No message handlers 056 //}}AFX_MSG_MAP 057 END_MESSAGE_MAP()
058
059 ///////////////////////////////////////////////////////////////////////////// 060 // CChangeDisplayDlg dialog 061
062 CChangeDisplayDlg::CChangeDisplayDlg(CWnd* pParent /*=NULL*/) 063 : CDialog(CChangeDisplayDlg::IDD, pParent)
064 {
065 //{{AFX_DATA_INIT(CChangeDisplayDlg) 066 m_nWidthPixels = 1024; 067 m_nHeightPixels = 768; 068 m_nBitsPerPixel = 32; 069 //}}AFX_DATA_INIT 070 // Note that LoadIcon does not require a subsequent DestroyIcon in Win32 071 m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME); 072 }
073
074 void CChangeDisplayDlg::DoDataExchange(CDataExchange* pDX) 075 {
076 CDialog::DoDataExchange(pDX);
077 //{{AFX_DATA_MAP(CChangeDisplayDlg) 078 DDX_Text(pDX, IDC_EDIT1, m_nWidthPixels);
079 DDX_Text(pDX, IDC_EDIT2, m_nHeightPixels);
080 DDX_Text(pDX, IDC_EDIT3, m_nBitsPerPixel);
081 //}}AFX_DATA_MAP 082 }
083
084 BEGIN_MESSAGE_MAP(CChangeDisplayDlg, CDialog)
085 //{{AFX_MSG_MAP(CChangeDisplayDlg) 086 ON_WM_SYSCOMMAND()
087 ON_WM_PAINT()
088 ON_WM_QUERYDRAGICON()
089 ON_BN_CLICKED(IDC_BUTTON1, OnButton1)
090 //}}AFX_MSG_MAP 091 END_MESSAGE_MAP()
092
093 ///////////////////////////////////////////////////////////////////////////// 094 // CChangeDisplayDlg message handlers 095
096 BOOL CChangeDisplayDlg::OnInitDialog()
097 {
098 CDialog::OnInitDialog();
099
100 // Add "About..." menu item to system menu. 101
102 // IDM_ABOUTBOX must be in the system command range. 103 ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
104 ASSERT(IDM_ABOUTBOX < 0xF000);
105
106 CMenu* pSysMenu = GetSystemMenu(FALSE);
107 if (pSysMenu != NULL) 108 {
109 CString strAboutMenu;
110 strAboutMenu.LoadString(IDS_ABOUTBOX);
111 if (!strAboutMenu.IsEmpty()) 112 {
113 pSysMenu->AppendMenu(MF_SEPARATOR);
114 pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
115 }
116 }
117
118 // Set the icon for this dialog. The framework does this automatically 119 // when the application's main window is not a dialog 120 SetIcon(m_hIcon, TRUE); // Set big icon 121 SetIcon(m_hIcon, FALSE); // Set small icon 122
123 // TODO: Add extra initialization here 124
125 return TRUE; // return TRUE unless you set the focus to a control 126 }
127
128 void CChangeDisplayDlg::OnSysCommand(UINT nID, LPARAM lParam) 129 {
130 if ((nID & 0xFFF0) == IDM_ABOUTBOX) 131 {
132 CAboutDlg dlgAbout;
133 dlgAbout.DoModal();
134 }
135 else 136 {
137 CDialog::OnSysCommand(nID, lParam);
138 }
139 }
140
141 // If you add a minimize button to your dialog, you will need the code below 142 // to draw the icon. For MFC applications using the document/view model, 143 // this is automatically done for you by the framework. 144
145 void CChangeDisplayDlg::OnPaint() 146 {
147 if (IsIconic()) 148 {
149 CPaintDC dc(this); // device context for painting 150
151 SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);
152
153 // Center icon in client rectangle 154 int cxIcon = GetSystemMetrics(SM_CXICON); 155 int cyIcon = GetSystemMetrics(SM_CYICON); 156 CRect rect;
157 GetClientRect(&rect);
158 int x = (rect.Width() - cxIcon + 1) / 2; 159 int y = (rect.Height() - cyIcon + 1) / 2; 160
161 // Draw the icon 162 dc.DrawIcon(x, y, m_hIcon);
163 }
164 else 165 {
166 CDialog::OnPaint();
167 }
168 }
169
170 // The system calls this to obtain the cursor to display while the user drags 171 // the minimized window. 172 HCURSOR CChangeDisplayDlg::OnQueryDragIcon()
173 {
174 return (HCURSOR) m_hIcon; 175 }
176
177 void CChangeDisplayDlg::OnButton1() 178 {
179 // TODO: Add your control notification handler code here 180 UpdateData(TRUE);
181 DEVMODE lpDevMode;
182 lpDevMode.dmBitsPerPel = m_nBitsPerPixel;
183 lpDevMode.dmPelsWidth = m_nWidthPixels;
184 lpDevMode.dmPelsHeight = m_nHeightPixels;
185 lpDevMode.dmSize = sizeof(lpDevMode); 186 lpDevMode.dmFields = DM_PELSWIDTH|DM_PELSHEIGHT|DM_BITSPERPEL;
187 LONG result = ChangeDisplaySettings(&lpDevMode,0);
188 if(result == DISP_CHANGE_SUCCESSFUL) 189 {
190 MessageBox("修改成功"); 191 ChangeDisplaySettings(&lpDevMode,CDS_UPDATEREGISTRY);
192 //使用CDS_UPDATEREGISTRY表示次修改是持久的, 193 //並在註冊表中寫入了相關的資料 194 }
195 else
196 {
197 MessageBox("修改失敗，恢復原有設置"); 198 ChangeDisplaySettings(NULL,0);
199 }
200 }
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