C++利用注册表添加桌面右键新建菜单

对于程序员来说，新建一个cpp文件是再频繁不过的事情了。

为了方便，我们习惯在桌面右键新建文件，而不是新建一个文本文档，然后修改后缀名。

百度谷歌查询了一下，终于知道如何添加注册表。

手痒，抽出时间用cpp写了一个程序，方便以后操作。

客户需求是永远无法满足的，经同学测试，陆续写了三个版本。

接下来直接贴代码~

第一个版本，只能添加c、cpp、java三种后缀。

 /*
  * Author: Haipz
  * School: HDU
  * File Name: registry1.0.cpp
  */
 #include <cstdio>
 #include <cmath>
 #include <ctime>
 #include <cctype>
 #include <cstring>
 #include <cstdlib>
 #include <climits>
 #include <cfloat>
 #include <iostream>
 #include <vector>
 #include <stack>
 #include <queue>
 #include <set>
 #include <map>
 #include <algorithm>
 using namespace std; char s[], buffer[], result[*]; void work_1() {
     system("reg add \"HKEY_CLASSES_ROOT\\.c\\ShellNew\" /v \"NullFile\" /t REG_SZ");
 } void work_2() {
     system("reg add \"HKEY_CLASSES_ROOT\\.cpp\\ShellNew\" /v \"NullFile\" /t REG_SZ");
 } void work_3() {
     system("reg add \"HKEY_CLASSES_ROOT\\.java\\ShellNew\" /v \"NullFile\" /t REG_SZ");
 } int main() {
     printf("Add registry for C, C++ and Java\n");
     printf("Author: Haipz\nSchool: HDU\n");
     printf("1 for C;\n2 for C++;\n3 for Java.\n");
     printf("Example: 12 to add C and C++.\n");
     printf("Please make choice(s): ");
     gets(s);
     for (int i = ; s[i] != '\0'; ++i) {
         printf("Working...\n");
         if (s[i] == '') work_1();
         else if (s[i] == '') work_2();
         else if (s[i] == '') work_3();
         else printf("%c is a wrong enter!\n", s[i]);
     }
     system("pause");
     return ;
 }

第二个版本，精简了代码，支持添加用户输入的后缀。

 /*
  * Author: Haipz
  * School: HDU
  * File Name: registry2.0.cpp
  */
 #include <cstdio>
 #include <cmath>
 #include <ctime>
 #include <cctype>
 #include <cstring>
 #include <cstdlib>
 #include <climits>
 #include <cfloat>
 #include <iostream>
 #include <vector>
 #include <stack>
 #include <queue>
 #include <set>
 #include <map>
 #include <algorithm>
 using namespace std; char a[];
 char b[] = "reg add \"HKEY_CLASSES_ROOT\\.";
 char c[] = "\\ShellNew\" /v \"NullFile\" /t REG_SZ"; void work(char* a) {
     strcat(b, a);
     strcat(b, c);
     system(b);
 } int main() {
     printf("Function: Add registry to build a new file simply!\n");
     printf("Author: Haipz\nSchool: HDU\n");
     printf("Example: Enter c to add C and enter cpp to add C++.\n");
     printf("Your opion: ");
     gets(a);
     work(a);
     system("pause");
     return ;
 }

第三个版本，支持多次添加，并允许删除已添加的注册表。

 /*
  * Author: Haipz
  * School: HDU
  * File Name: registry2.0.cpp
  */
 #include <cstdio>
 #include <cmath>
 #include <ctime>
 #include <cctype>
 #include <cstring>
 #include <cstdlib>
 #include <climits>
 #include <cfloat>
 #include <iostream>
 #include <vector>
 #include <stack>
 #include <queue>
 #include <set>
 #include <map>
 #include <algorithm>
 using namespace std; char key[];
 char a[]; void add(char* t) {
     char b[] = "reg add \"HKEY_CLASSES_ROOT\\.";
     char c[] = "\\ShellNew\" /v \"NullFile\" /t REG_SZ";
     strcat(b, t);
     strcat(b, c);
     system(b);
 } void del(char* t) {
     char d[] = "reg delete \"HKEY_CLASSES_ROOT\\.";
     char e[] = "\\ShellNew\" /f";
     strcat(d, t);
     strcat(d, e);
     system(d);
 } int main() {
     printf("Function: Build a new file simply!\n");
     printf("Author: Haipz\nSchool: HDU\n");
     printf("Example: Enter \"c\" to add C and enter \"cpp\" to add C++;\n");
     printf("         Enter \"-c\" to delete C.\n");
     do {
         printf("Your opion: ");
         gets(a);
         if (a[] == '-') del(a + );
         else add(a);
         printf("Enter \"r\" to run again or any other key to quit: ");
         gets(key);
     } while (key[] == 'r');
     return ;
 }

打包下载地址：

http://files.cnblogs.com/haipzm/Regedity.zip

注意，如果系统提示缺少某dll文件，请到网上下载，并复制到C:\Windows\System32目录下。