我有以下代码使用 WinAPI 中的 CreateFile 函数编写一个简单的 TXT:
#include <stdio.h>
#include <windows.h>
#include <Wincrypt.h>
#include <string.h>
#include <tchar.h>
#include <strsafe.h>
#include <iostream>
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow) {
LPCTSTR lpFileName = L"C:\\MyTest.txt";
DWORD dwDesiredAccess = GENERIC_READ | GENERIC_WRITE;
DWORD dwShareMode = FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE;
LPSECURITY_ATTRIBUTES lpSecurityAttributes = NULL;
DWORD dwCreationDisposition = CREATE_NEW;
DWORD dwFlagsAndAttributes = FILE_ATTRIBUTE_NORMAL;
HANDLE hTemplateFile = NULL;
HANDLE C=CreateFile(lpFileName, dwDesiredAccess, dwShareMode, lpSecurityAttributes,
dwCreationDisposition, dwFlagsAndAttributes, hTemplateFile);
DWORD Er=GetLastError();
char *pMsg = NULL;
FormatMessageW(
FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS | FORMAT_MESSAGE_ARGUMENT_ARRAY | FORMAT_MESSAGE_ALLOCATE_BUFFER,
NULL,
Er,
LANG_SYSTEM_DEFAULT,
(LPWSTR)&pMsg,
0,
NULL
);
if (C != INVALID_HANDLE_VALUE)
{
MessageBox(NULL, (LPCTSTR)pMsg, L"Explorando la API", MB_ICONINFORMATION);
}
else
{
MessageBox(NULL, (LPCTSTR)pMsg, L"Explorando la API", MB_ICONINFORMATION);
}
CloseHandle(C);
}
问题是:如何使用StringCchCat
函数将自定义字符串传递给 lpFile 名称?
我想从注册表项中读取任何数字(使用 RegQueryValue)并为文件命名。例如,如果我从 DemoValue 中读取“1”,则 TXT 名称将是:MyText1.txt 或 MyText(1).txt。
你能帮助我吗?谢谢!