vc++编程常见问题

//定位文件void Jump2File(string strPath){ string cmd = "/e,/select,"+strPath; ShellExecute(NULL,NULL,"explorer",cmd.c_str(),NULL,SW_SHOW);}
4.BeginWaitCursor和EndWaitCursor无效答：SetCapture();BeginWaitCursor();....EndWaitCursor();ReleaseCapture();

5.打印源码中文件名和行号常用的宏名是什么？ 答：文件名：__FILE__ 行号：__LINE__

6.如何具体判断一个字符串中哪个是英文字母答：函数isalpha
//一些帮助函数
//返回当前程序的路径//例如c:\abc\abc.exe则返回c:\abcBOOL GetPath(TCHAR * strPath){ TCHAR sDrive[_MAX_DRIVE]; TCHAR sDir[_MAX_DIR]; TCHAR sFilename[_MAX_FNAME],Filename[_MAX_FNAME]; TCHAR sExt[_MAX_EXT]; GetModuleFileName(NULL, Filename, _MAX_PATH); _tsplitpath(Filename, sDrive, sDir, sFilename, sExt); _tcscpy(strPath,sDrive); _tcscat(strPath,sDir);
strPath[_tcslen(strPath)-1] = _T('\0'); return TRUE;}
//获得父进程ID,失败则返回0DWORD GetPPid() { HANDLE hProcessSnap = NULL; PROCESSENTRY32 pe32 = {0}; DWORD dwPID = GetCurrentProcessId(); hProcessSnap = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0); if(hProcessSnap==(HANDLE)-1) return (FALSE);
pe32.dwSize = sizeof(PROCESSENTRY32); if (Process32First(hProcessSnap, &pe32)) { while(pe32.th32ProcessID!=dwPID) Process32Next(hProcessSnap, &pe32); } CloseHandle(hProcessSnap); return(pe32.th32ParentProcessID); }
//判断程序是否以服务运行BOOL isRuninServices(){ DWORD dwPPID = GetPPid();
HANDLE hProcessSnap = NULL; PROCESSENTRY32 pe32 = {0}; hProcessSnap = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0); if (hProcessSnap == (HANDLE)-1) return (FALSE); pe32.dwSize = sizeof(PROCESSENTRY32); if (Process32First(hProcessSnap, &pe32)) { while(pe32.th32ProcessID!=dwPPID) Process32Next(hProcessSnap, &pe32); } CloseHandle(hProcessSnap);
if(_tcsncicmp(pe32.szExeFile,_T("services.exe"),20)==0) return TRUE; else return FALSE;
}
//用于在release下输出调试信息void KDbgPrint(LPCTSTR lpszFormat, ...){#define _countof(array) (sizeof(array)/sizeof(array[0]))#ifdef KOUT_DEBUG_STRING va_list args; va_start(args, lpszFormat);
int nBuf; TCHAR szBuffer[512];
nBuf = _vsntprintf(szBuffer, _countof(szBuffer), lpszFormat, args);
OutputDebugString(szBuffer);
va_end(args);#endif}
//从地址去获得模块基址HMODULE WINAPI ModuleFromAddress(PVOID pv){ MEMORY_BASIC_INFORMATION mbi; if(::VirtualQuery(pv, &mbi, sizeof(mbi)) != 0) { return (HMODULE)mbi.AllocationBase; } else { return NULL; }}
//获得DLL自身BOOL GetDllPath(TCHAR * path){ HMODULE hDll = ModuleFromAddress(GetDllPath);
if(hDll==NULL) return FALSE; else { GetModuleFileName(hDll, path, _MAX_PATH); return TRUE; }}

//格式化stringvoid format_string(string & str,LPCTSTR lpszFormat, ...){#define _countof(array) (sizeof(array)/sizeof(array[0])) va_list args; va_start(args, lpszFormat); int nBuf; TCHAR szBuffer[1024]; nBuf = _vsntprintf(szBuffer, _countof(szBuffer), lpszFormat, args); str = szBuffer; va_end(args);}
5.isdigit：判断字符是否是数字(0 – 9) isalpha：判断字符是否是字母(A – Z or a – z) isxdigit：判断是否是十六进制字符(A – F, a – f, or 0 – 9) isalnum：判断是否是数字和字母(A – Z, a – z, or 0 – 9)
6.sprintf,CString.Format中使用变量CString str;int i = 3;str.Format("%0*d", i, ret);//效果一样str.Format("%03d", ret);//效果一样