真正的半透明窗体 VC++源程序
真正的半透明窗体VC++源程序，先看上边的效果图说话，这个半透明效果仅是一个最基础的，它将透明度固定在50%，你可以改变这个参数，以达到不同的半透明效果。
2023-11-25 12:10:22
19KB
1
vc++利用ADOX创建数据库
// ADOXCreateDatabaseDlg.cpp : implementation file
//
#include "stdafx.h"
#include "ADOXCreateDatabase.h"
#include "ADOXCreateDatabaseDlg.h"
#include "Shlwapi.h"
#pragma comment(lib,"shlwapi.lib")
// Download by http://www.codefans.net
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
/////////////////////////////////////////////////////////////////////////////
// CAboutDlg dialog used for App About
class CAboutDlg : public CDialog
{
public:
CAboutDlg();
// Dialog Data
//{{AFX_DATA(CAboutDlg)
enum { IDD = IDD_ABOUTBOX };
//}}AFX_DATA
// ClassWizard generated virtual function overrides
//{{AFX_VIRTUAL(CAboutDlg)
protected:
virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV support
//}}AFX_VIRTUAL
// Implementation
protected:
//{{AFX_MSG(CAboutDlg)
//}}AFX_MSG
DECLARE_MESSAGE_MAP()
};
CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
{
//{{AFX_DATA_INIT(CAboutDlg)
//}}AFX_DATA_INIT
}
void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
//{{AFX_DATA_MAP(CAboutDlg)
//}}AFX_DATA_MAP
}
BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
//{{AFX_MSG_MAP(CAboutDlg)
// No message handlers
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// CADOXCreateDatabaseDlg dialog
CADOXCreateDatabaseDlg::CADOXCreateDatabaseDlg(CWnd* pParent /*=NULL*/)
: CDialog(CADOXCreateDatabaseDlg::IDD, pParent)
{
//{{AFX_DATA_INIT(CADOXCreateDatabaseDlg)
m_dbName = _T("");
//}}AFX_DATA_INIT
// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}
void CADOXCreateDatabaseDlg::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
//{{AFX_DATA_MAP(CADOXCreateDatabaseDlg)
DDX_Text(pDX, IDC_DBNAME, m_dbName);
//}}AFX_DATA_MAP
}
BEGIN_MESSAGE_MAP(CADOXCreateDatabaseDlg, CDialog)
//{{AFX_MSG_MAP(CADOXCreateDatabaseDlg)
ON_WM_SYSCOMMAND()
ON_WM_PAINT()
ON_WM_QUERYDRAGICON()
ON_BN_CLICKED(IDC_BTN_CREATE, OnBtnCreate)
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// CADOXCreateDatabaseDlg message handlers
BOOL CADOXCreateDatabaseDlg::OnInitDialog()
{
CDialog::OnInitDialog();
// Add "About..." menu item to system menu.
// IDM_ABOUTBOX must be in the system command range.
ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
ASSERT(IDM_ABOUTBOX < 0xF000);
CMenu* pSysMenu = GetSystemMenu(FALSE);
if (pSysMenu != NULL)
{
CString strAboutMenu;
strAboutMenu.LoadString(IDS_ABOUTBOX);
if (!strAboutMenu.IsEmpty())
{
pSysMenu->AppendMenu(MF_SEPARATOR);
pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
}
}
// Set the icon for this dialog. The framework does this automatically
// when the application's main window is not a dialog
SetIcon(m_hIcon, TRUE); // Set big icon
SetIcon(m_hIcon, FALSE); // Set small icon
// TODO: Add extra initialization here
return TRUE; // return TRUE unless you set the focus to a control
}
void CADOXCreateDatabaseDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
if ((nID & 0xFFF0) == IDM_ABOUTBOX)
{
CAboutDlg dlgAbout;
dlgAbout.DoModal();
}
else
{
CDialog::OnSysCommand(nID, lParam);
}
}
// If you add a minimize button to your dialog, you will need the code below
// to draw the icon. For MFC applications using the document/view model,
// this is automatically done for you by the framework.
void CADOXCreateDatabaseDlg::OnPaint()
{
if (IsIconic())
{
CPaintDC dc(this); // device context for painting
SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);
// Center icon in client rectangle
int cxIcon = GetSystemMetrics(SM_CXICON);
int cyIcon = GetSystemMetrics(SM_CYICON);
CRect rect;
GetClientRect(▭);
int x = (rect.Width() - cxIcon + 1) / 2;
int y = (rect.Height() - cyIcon + 1) / 2;
// Draw the icon
dc.DrawIcon(x, y, m_hIcon);
}
else
{
CDialog::OnPaint();
}
}
// The system calls this to obtain the cursor to display while the user drags
// the minimized window.
HCURSOR CADOXCreateDatabaseDlg::OnQueryDragIcon()
{
return (HCURSOR) m_hIcon;
}
void CADOXCreateDatabaseDlg::OnBtnCreate()
{
//使输入到编辑框IDC_DBNAME的内容更新到m_dbName变量中
UpdateData(TRUE);
CString str;
str="d:\\\\"+m_dbName+".mdb";
//检查该数据库是否已经存在，如果该数据库已经存在，弹出消息框，返回
//使用API函数PathFileExists()检查路径文件是否存在
//请注意：为了使用API函数PathFileExists()，需要加入
//#include "Shlwapi.h"
//#pragma comment(lib,"shlwapi.lib")
if(PathFileExists(str))
{
CString strTemp;
strTemp.Format("%s已存在!",str);
AfxMessageBox(strTemp);
return ;
}
//定义ADOX对象指针并初始化为NULL
//用ADOX创建access数据库方法很简单，
//只需要新建一个Catalog对象，然后调用它的Create方法就可以了。
//Catalog是 ADOX 的一个对象，它包含描述数据源模式目录的集合。
//在这里，您只需知道创建数据库时使用这个对象就可以了。
//注意用try...catch组合捕捉错误
_CatalogPtr m_pCatalog = NULL;
CString DBName="Provider=Microsoft.JET.OLEDB.4.0;Data source=";
DBName=DBName+str;
try
{
m_pCatalog.CreateInstance(__uuidof(Catalog));
m_pCatalog->Create(_bstr_t((LPCTSTR)DBName));
}
catch(_com_error &e)
{
AfxMessageBox(e.ErrorMessage());
return ;
}
}
2023-11-22 08:03:12
13.59MB
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