驱动器组合框

相信用过VB的人都对那些驱动器，目录，文件列表控件有兴趣，VC中没有，只好自己做了。以下是我自己写的驱动器组合框控件代码。

/// DriveBox.h

class CDriveBox : public CComboBoxEx{public: CDriveBox(); virtual ~CDriveBox();

 // Generated message map functionsprotected: //  {{AFX_MSG(CDriveBox) afx_msg int OnCreate(LPCREATESTRUCT lpCreateStruct); //  }}AFX_MSG

DECLARE_MESSAGE_MAP()public: int GetSelDrive(); bool SetSelDrive(char drive); void Initialize();private: void AddItem(char *path,int index); CImageList m_img; char m_drivers[50];};

// DriveBox.cpp : implementation file//

#include "stdafx.h"#include "DriveBox.h"

CDriveBox::CDriveBox(){ }

CDriveBox::~CDriveBox(){}

BEGIN_MESSAGE_MAP(CDriveBox, CComboBoxEx)  // {{ AFX_MSG_MAP(CDriveBox) ON_WM_CREATE() // }}AFX_MSG_MAPEND_MESSAGE_MAP()

/// CDriveBox message handlers

int CDriveBox::OnCreate(LPCREATESTRUCT lpCreateStruct) { if (CComboBoxEx::OnCreate(lpCreateStruct) == -1)  return -1;  // TODO: Add your specialized creation code here Initialize(); return 0;}

void CDriveBox::Initialize(){ m_img.Create( GetSystemMetrics(SM_CXSMICON),             GetSystemMetrics(SM_CYSMICON),            ILC_MASK|ILC_COLORDDB, 50, 50); m_img.SetBkColor( GetSysColor(COLOR_WINDOW) ); SetImageList(&m_img); char *ptr,drivename[500]; GetLogicalDriveStrings(500,drivename); ptr=drivename;int index=0; while (*ptr) { m_drivers[index]=*ptr; AddItem(ptr,index++); ptr+=strlen(ptr)+1; } SetSelDrive('c');}

void CDriveBox::AddItem(char *path,int index){ SHFILEINFO pathInfo,path_SelInfo; SHGetFileInfo( path, NULL, &pathInfo,   sizeof(pathInfo),   SHGFI_DISPLAYNAME | SHGFI_ICON | SHGFI_SMALLICON); SHGetFileInfo( path, NULL, &path_SelInfo,   sizeof(path_SelInfo),   SHGFI_DISPLAYNAME |  SHGFI_ICON | SHGFI_OPENICON | SHGFI_SMALLICON); int icon=m_img.Add(pathInfo.hIcon); int icon_sel=m_img.Add(path_SelInfo.hIcon); COMBOBOXEXITEM item; item.mask=CBEIF_TEXT|CBEIF_IMAGE|CBEIF_SELECTEDIMAGE; item.pszText=pathInfo.szDisplayName; item.iSelectedImage=icon; item.iImage=icon;//正常图标 item.iItem=index; InsertItem(&item);}

int CDriveBox::GetSelDrive()//返回所选磁盘{ int sel=GetCurSel(); char driver=m_drivers[sel]; driver=toupper(driver); return (driver-65);//返回数字索引，如0为A盘，2为C盘 //  return   driver;//返回盘符}

bool CDriveBox::SetSelDrive(char drive)//设置磁盘{ if(!isalpha(drive))return FALSE; drive=toupper(drive);int index=0; while(drive!=toupper(m_drivers[index]))index++; SetCurSel(index);return TRUE;}

//

如何使用?

建立一个对话框工程CTestDlg,用ResourceEditor加入一个ComboBoxEx控件，用ClassWizard加入一个Control成员m_box, 然后在CTestDlg.h中将CComboBoxEx改为CDriveBox,在CTestDlg.h开始处加一句#include  "CDriveBox.h",在CTestDlg::OnInitDialog()中加上m_box.Initialize()就OK了。用m_box.GetSelDrive()返回当前选择驱动器.如0为A盘，2为C盘。