如何把CHAR*变成UNSIGNED LONG

page10 2005-03-24 08:55:55
如何用C写一个函数
其中
第一个参数是整数数组类型
第二个参数是字父符数组类型



如何把CHAR*变成UNSIGNED LONG
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021850524 2005-03-24
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char aaaa = 'a';
char *buf = &aaaa;
unsigned long l = (unsigned long)buf;
C比C++的类型检查要弱.用强制转换就行.
皮鲁 2005-03-24
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就好像消息传递附加参数一样
lParam 是long型的,它可以存入一个指针地址
lParam<--(long)&myStructPointer
Springo0 2005-03-24
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对,强制转化:
char a;
(unsigned long)a;
这样应该可以,我也刚学,请多指教!
使用ZLIB库 包装的压缩解压缩文件的源码 VS2005 工程创建 /* */ class ZIPWRAP_EXP CZipper { public: CZipper(); virtual ~CZipper(); // simple interface static bool ZipFile(const char* szFilePath); // saves as same name with .zip static bool ZipFolder(const char* szFilePath, bool ignoreself = false); // saves as same name with .zip bool AddFolderToZipFile(const char*foldername, const char* rootfolder); bool AddFileToZipFile(const char*filename, const char*relfolder = NULL, const char* comment = NULL); bool AddFolderOnlyPathToFile(const char* foldername, const char* comment = NULL); bool OpenZipFile(const char* zipfilename, bool append = false); bool CloseZipFile(const char* global_comment = NULL); private: void* zipfile_;/* = NULL */ }; /* */ #define MAX_COMMENT (255) /* tm_unz contain date/time info */ typedef struct UZ_s { unsigned int tm_sec; /* seconds after the minute - [0,59] */ unsigned int tm_min; /* minutes after the hour - [0,59] */ unsigned int tm_hour; /* hours since midnight - [0,23] */ unsigned int tm_mday; /* day of the month - [1,31] */ unsigned int tm_mon; /* months since January - [0,11] */ unsigned int tm_year; /* years - [1980..2044] */ } UZ_s; // create our own fileinfo struct to hide the underlying implementation struct UZ_FileInfo { char szFileName[260 + 1]; char szComment[255 + 1]; unsigned long dwVersion; unsigned long dwVersionNeeded; unsigned long dwFlags; unsigned long dwCompressionMethod; unsigned long dwDosDate; unsigned long dwCRC; unsigned long dwCompressedSize; unsigned long dwUncompressedSize; unsigned long dwInternalAttrib; unsigned long dwExternalAttrib; bool bFolder; UZ_s tmu_date; }; class ZIPWRAP_EXP CUnZipper { public: CUnZipper(); virtual ~CUnZipper(); // simple interface static bool UnZip( const char* filename, const char* dstfolder, bool ingorepath = false, const char* password = NULL); bool OpenUnZipFile(const char* filename); bool CloseUnZipFile(); bool UnZipTo( const char* dstfolder, bool ingorepath = false, const char* password = NULL); int GetFileCount(); bool GotoFirstFile(); bool GotoNextFile(); bool GotoZipFile(int index); bool GotoZipFile(const char* zipfilename); bool GetCurrentFileInfo(UZ_FileInfo&fileinfo;); bool UnCurrentZipFile(const char* dstfolder, bool ingorepath = false, const char* password = NULL); bool UnOneZipFile(const char* filename, const char* dstfolder, bool ingorepath = false, const char* password = NULL); bool UnOneZipFile(int index, const char* dstfolder, bool ingorepath = false, const char* password = NULL); private: void* unzipfile_; };

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