SHGetFileInfo()获取系统图标方法_shgetfileinfo 鼠标图片-优快云博客

本文详细介绍了一个名为CSHGetFileInfo的C++类，该类主要用于封装Windows API中的SHGetFileInfo函数，以便于获取文件和目录的图标、图标索引及文件类型等信息。无论是小图标还是大图标，通过这个类都能轻松实现。

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//头文件
/// @class CSHGetFileInfo
/// SHGetFileInfo的包裹类
class CSHGetFileInfo
{

public:
    CSHGetFileInfo();

    virtual ~CSHGetFileInfo();

    /// 获取系统图像列表
    /// @param[in] bSmallIcon ture则为小图标，false则为大图标
    HIMAGELIST  GetSystemImageListHandle( BOOL bSmallIcon );

    /// 获取系统图片列表的文件图片索引
    /// @param[in] strFileName 文件名
    /// @param[in] bSmallIcon ture则为小图标，false则为大图标
    int GetFileIconIndex( CString strFileName, BOOL bSmallIcon);

    /// 获取系统图片列表的文件夹图片索引
    /// @param[in] bSmallIcon
    int GetDirIconIndex(BOOL bSmallIcon);

    /// 获取文件的icon的句柄
    /// @param[in] strFileName 文件名
    /// @param[in] bSmallIcon ture则为小图标，false则为大图标
    HICON GetFileIconHandle(CString strFileName, BOOL bSmallIcon);

    /// 获取文件夹的icon的句柄
    /// @param[in] bSmallIcon ture则为小图标，false则为大图标
    HICON GetFolderIconHandle(BOOL bSmallIcon );

    /// 获取文件类型
    /// @param[in] strFileName 文件名
    CString GetFileType(CString strFileName);

};


//cpp文件
CSHGetFileInfo::CSHGetFileInfo()
{

}

CSHGetFileInfo::~CSHGetFileInfo()
{

}


HIMAGELIST  CSHGetFileInfo::GetSystemImageListHandle( BOOL bSmallIcon )
{
    HIMAGELIST  hSystemImageList; 
    SHFILEINFO    ssfi; 

    if (bSmallIcon)
    {
        hSystemImageList = 
            (HIMAGELIST)SHGetFileInfo( 
            (LPCTSTR)_T("c:\\"), 
            0, 
            &ssfi, 
            sizeof(SHFILEINFO), 
            SHGFI_SYSICONINDEX | SHGFI_SMALLICON); 
    }
    else
    {
        hSystemImageList = 
            (HIMAGELIST)SHGetFileInfo( 
            (LPCTSTR)_T("c:\\"), 
            0, 
            &ssfi, 
            sizeof(SHFILEINFO), 
            SHGFI_SYSICONINDEX | SHGFI_LARGEICON); 
    }
    return hSystemImageList;
}


int CSHGetFileInfo::GetFileIconIndex( CString strFileName, BOOL bSmallIcon )
{
    SHFILEINFO    sfi;

    if (bSmallIcon)
    {
        SHGetFileInfo(
            (LPCTSTR)strFileName, 
            FILE_ATTRIBUTE_NORMAL,
            &sfi, 
            sizeof(SHFILEINFO), 
            SHGFI_SYSICONINDEX | SHGFI_SMALLICON | SHGFI_USEFILEATTRIBUTES);
    }
    else
    {
        SHGetFileInfo(
            (LPCTSTR)strFileName, 
            FILE_ATTRIBUTE_NORMAL,
            &sfi, 
            sizeof(SHFILEINFO), 
            SHGFI_SYSICONINDEX | SHGFI_LARGEICON | SHGFI_USEFILEATTRIBUTES);
    }

    return sfi.iIcon;

}

int CSHGetFileInfo::GetDirIconIndex(BOOL bSmallIcon )
{
    SHFILEINFO    sfi;
    if (bSmallIcon)
    {
        SHGetFileInfo(
            (LPCTSTR)"Doesn't matter", 
            FILE_ATTRIBUTE_DIRECTORY,
            &sfi, 
            sizeof(SHFILEINFO), 
            SHGFI_SYSICONINDEX | SHGFI_SMALLICON | SHGFI_USEFILEATTRIBUTES);
    }
    else
    {
        SHGetFileInfo(
            (LPCTSTR)"Doesn't matter", 
            FILE_ATTRIBUTE_DIRECTORY,
            &sfi, 
            sizeof(SHFILEINFO), 
            SHGFI_SYSICONINDEX | SHGFI_LARGEICON | SHGFI_USEFILEATTRIBUTES);

    }
    return sfi.iIcon;

}
HICON CSHGetFileInfo::GetFileIconHandle(CString strFileName, BOOL bSmallIcon)
{

    SHFILEINFO    sfi;
    if (bSmallIcon)
    {
        SHGetFileInfo(
            (LPCTSTR)strFileName, 
            FILE_ATTRIBUTE_NORMAL,
            &sfi, 
            sizeof(SHFILEINFO), 
            SHGFI_ICON | SHGFI_SMALLICON | SHGFI_USEFILEATTRIBUTES);
    }
    else
    {
        SHGetFileInfo(
            (LPCTSTR)strFileName, 
            FILE_ATTRIBUTE_NORMAL,
            &sfi, 
            sizeof(SHFILEINFO), 
            SHGFI_ICON | SHGFI_LARGEICON | SHGFI_USEFILEATTRIBUTES);
    }
    return sfi.hIcon;


}
HICON CSHGetFileInfo::GetFolderIconHandle(BOOL bSmallIcon )
{
    SHFILEINFO    sfi;
    if (bSmallIcon)
    {
        SHGetFileInfo(
            (LPCTSTR)"Doesn't matter", 
            FILE_ATTRIBUTE_DIRECTORY,
            &sfi, 
            sizeof(SHFILEINFO), 
            SHGFI_ICON | SHGFI_SMALLICON | SHGFI_USEFILEATTRIBUTES);
    }
    else
    {
        SHGetFileInfo(
            (LPCTSTR)"Does not matter", 
            FILE_ATTRIBUTE_DIRECTORY,
            &sfi, 
            sizeof(SHFILEINFO), 
            SHGFI_ICON | SHGFI_LARGEICON | SHGFI_USEFILEATTRIBUTES);
    }
    return sfi.hIcon;
}

CString CSHGetFileInfo::GetFileType(CString strFileName)
{
    SHFILEINFO    sfi;

    SHGetFileInfo(
        (LPCTSTR)strFileName, 
        FILE_ATTRIBUTE_NORMAL,
        &sfi, 
        sizeof(SHFILEINFO), 
        SHGFI_TYPENAME | SHGFI_USEFILEATTRIBUTES);

    return sfi.szTypeName;
}