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   源码介绍

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win32/MFC编程入门级项目，磁盘扇区查看器，由于磁盘数据如果展示到界面上来，数据量是非常大的，所以做了分页处理 这是是毕业之前做的

// DiskPartitionView.cpp : 实现文件
//

#include "stdafx.h"
#include "DiskSectorExplorer02.h"
#include "DiskPartitionView.h"
#include "MainFrm.h"




// CDiskPartitionView

IMPLEMENT_DYNCREATE(CDiskPartitionView, CTreeView)

CDiskPartitionView::CDiskPartitionView()
{

}

CDiskPartitionView::~CDiskPartitionView()
{
}

BEGIN_MESSAGE_MAP(CDiskPartitionView, CTreeView)
ON_NOTIFY_REFLECT(TVN_SELCHANGED, &CDiskPartitionView::OnTvnSelchanged)
END_MESSAGE_MAP()


// CDiskPartitionView 诊断

#ifdef _DEBUG
void CDiskPartitionView::AssertValid() const
{
CTreeView::AssertValid();
}

#ifndef _WIN32_WCE
void CDiskPartitionView::Dump(CDumpContext& dc) const
{
CTreeView::Dump(dc);
}
#endif
#endif //_DEBUG

// CDiskPartitionView 消息处理程序
//视图第一次初始化时也会调用此函数
void CDiskPartitionView::OnInitialUpdate()
{
CTreeView::OnInitialUpdate();
if (GetTreeCtrl().GetRootItem()!=NULL)
{
return ;
}
//初始化树形控件
HTREEITEM root1,root2;
root1=GetTreeCtrl().InsertItem(_T("分区列表"));
DWORD needDriveStringBufSize=GetLogicalDriveStrings(0,NULL);
LPTSTR lpDriveStrings=(LPTSTR)HeapAlloc(GetProcessHeap(),0,needDriveStringBufSize*sizeof(TCHAR));
GetLogicalDriveStrings(needDriveStringBufSize,lpDriveStrings);
int nextNullIndex=0,nullIndex=0;
while (lpDriveStrings[0]!=_T('\0'))
{
HTREEITEM partitionItem=
GetTreeCtrl().InsertItem(lpDriveStrings,root1);
GetTreeCtrl().SetItemData(partitionItem,LOGICAL_PARTITION);
lpDriveStrings=_tcschr(lpDriveStrings,0) 1;
}

root2=GetTreeCtrl().InsertItem(_T("硬盘列表"));
DWORD* pDiskNumbers[MAX_DEVICE];
int nDevices=GetAllPresentDisks(pDiskNumbers);
CString diskNumber;
for (int i=0;i<nDevices;i )
{
diskNumber.Format(_T("Disk_%d"),*(*pDiskNumbers i));
HTREEITEM diskItem=GetTreeCtrl().InsertItem(diskNumber,root2);
GetTreeCtrl().SetItemData(diskItem,PHYSICAL_DISK);
}

}

BOOL CDiskPartitionView::PreCreateWindow(CREATESTRUCT& cs)
{
// TODO: 在此添加专用代码和/或调用基类
cs.style|=(TVS_HASLINES|TVS_HASBUTTONS|TVS_LINESATROOT|TVS_SINGLEEXPAND);
return CTreeView::PreCreateWindow(cs);
}

void CDiskPartitionView::OnTvnSelchanged(NMHDR *pNMHDR, LRESULT *pResult)
{
LPNMTREEVIEW pNMTreeView = reinterpret_cast<LPNMTREEVIEW>(pNMHDR);

// TODO: 在此添加控件通知处理程序代码
//读取磁盘
//
// load file, ...
//
TV_ITEM t_SelectedItem=pNMTreeView->itemNew;
HTREEITEM t_SelTreeItem=t_SelectedItem.hItem;
if (t_SelTreeItem==GetTreeCtrl().GetRootItem())
{
return ;
}
m_strSelectedDiskName=GetTreeCtrl().GetItemText(t_SelTreeItem);
DWORD nodeType=GetTreeCtrl().GetItemData(t_SelTreeItem);
//向主窗口发送消息
::PostMessage(AfxGetMainFrame()->m_hWnd,WM_DiskPartitionView_2_MainFrame_PartitionChanged,
(WPARAM)m_strSelectedDiskName.GetBuffer(32),(LPARAM)nodeType);
*pResult = 0;
}

DWORD CDiskPartitionView::GetDevicePath( LPGUID lpGuid,TCHAR ** pszDevicePath )
{
HDEVINFO hDevInfoSet;
SP_DEVICE_INTERFACE_DATA ifdata;
PSP_DEVICE_INTERFACE_DETAIL_DATA pDetail;
DWORD nCount;
BOOL result;

//get a handle to a device information set 
hDevInfoSet = SetupDiGetClassDevs(
lpGuid,      // class GUID 
NULL,        // Enumerator
NULL,        // hwndParent
DIGCF_PRESENT | DIGCF_DEVICEINTERFACE    // present devices
);

//fail...
if (hDevInfoSet == INVALID_HANDLE_VALUE)
{
fprintf(stderr, "IOCTL_STORAGE_GET_DEVICE_NUMBER Error: %ld\n", GetLastError());
return (DWORD)-1;
}

pDetail = (PSP_DEVICE_INTERFACE_DETAIL_DATA)malloc(INTERFACE_DETAIL_SIZE);
if (pDetail == NULL)
{
return (DWORD)-1;
}
pDetail->cbSize = sizeof(SP_DEVICE_INTERFACE_DETAIL_DATA);

nCount = 0;
result = TRUE;

// device index = 0, 1, 2... test the device interface one by one
while (result)
{
ifdata.cbSize = sizeof(ifdata);

//enumerates the device interfaces that are contained in a device information set
result = SetupDiEnumDeviceInterfaces(
hDevInfoSet,     // DeviceInfoSet
NULL,            // DeviceInfoData
lpGuid,          // GUID
nCount,   // MemberIndex
&ifdata        // DeviceInterfaceData
);
if (result)
{
// get details about a device interface
result = SetupDiGetDeviceInterfaceDetail(
hDevInfoSet,    // DeviceInfoSet
&ifdata,        // DeviceInterfaceData
pDetail,        // DeviceInterfaceDetailData
INTERFACE_DETAIL_SIZE,    // DeviceInterfaceDetailDataSize
NULL,           // RequiredSize
NULL          // DeviceInfoData
);
int n=GetLastError();
if (result)
{
// copy the path to output buffer
_tcscpy(
pszDevicePath[nCount],
pDetail->DevicePath
);
//printf("%s\n", pDetail->DevicePath);
nCount ;
}
}
}

free(pDetail);
(void)SetupDiDestroyDeviceInfoList(hDevInfoSet);

return nCount;

}

DWORD CDiskPartitionView::GetAllPresentDisks( DWORD** ppDisks )
{
TCHAR *szDevicePath[MAX_DEVICE];        // device path
DWORD nDevice;
HANDLE hDevice;
STORAGE_DEVICE_NUMBER number;
BOOL result;
DWORD readed;
WORD i, j;

for (i = 0; i < MAX_DEVICE; i )
{
szDevicePath[i] = (TCHAR *)malloc(INTERFACE_DETAIL_SIZE);
if (NULL == szDevicePath[i])
{
for (j = 0; j < i; j )
{
free(szDevicePath[i]);
}
return (DWORD)-1;
}
}

// get the device paths
nDevice = GetDevicePath(const_cast<LPGUID>(&GUID_DEVINTERFACE_DISK), szDevicePath);
if ((DWORD)-1 == nDevice)
{
for (i = 0; i < MAX_DEVICE; i )
{
free(szDevicePath[i]);
}
return (DWORD)-1;
}

*ppDisks = (DWORD *)malloc(sizeof(DWORD) * nDevice);
// get the disk's physical number one by one
for (i = 0; i < nDevice; i )
{
hDevice = CreateFile(
szDevicePath[i], // drive to open
GENERIC_READ | GENERIC_WRITE,     // access to the drive
FILE_SHARE_READ | FILE_SHARE_WRITE, //share mode
NULL,             // default security attributes
OPEN_EXISTING,    // disposition
0,                // file attributes
NULL            // do not copy file attribute
);
if (hDevice == INVALID_HANDLE_VALUE) // cannot open the drive
{
for (j = 0; j < MAX_DEVICE; j )
{
free(szDevicePath[j]);
}
free(*ppDisks);
fprintf(stderr, "CreateFile() Error: %ld\n", GetLastError());
return DWORD(-1);
}
result = DeviceIoControl(
hDevice,                // handle to device
IOCTL_STORAGE_GET_DEVICE_NUMBER, // dwIoControlCode
NULL,                            // lpInBuffer
0,                               // nInBufferSize
&number,           // output buffer
sizeof(number),         // size of output buffer
&readed,       // number of bytes returned
NULL      // OVERLAPPED structure
);
if (!result) // fail
{
fprintf(stderr, "IOCTL_STORAGE_GET_DEVICE_NUMBER Error: %ld\n", GetLastError());
for (j = 0; j < MAX_DEVICE; j )
{
free(szDevicePath[j]);
}
free(*ppDisks);
(void)CloseHandle(hDevice);
return (DWORD)-1;
}
*(*ppDisks i) = number.DeviceNumber;

(void)CloseHandle(hDevice);
}
for (i = 0; i < MAX_DEVICE; i )
{
free(szDevicePath[i]);
}
return nDevice;

}