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【设置电脑环境变量】
设置电脑环境变量非常easy,由于window而言。环境变量都相应的存储在注冊表中,所以仅仅要写注冊表就能做到新增删除改动环境变量了。
So easy
环境变量在注冊表中的位置: HKEY_CURRENT_USER ->Environment
so 看代码:
bool createComputerPath() { if(createReg(HKEY_CURRENT_USER,L"Environment",L"PathName",L"PathValue")) { //DWORD dwRet=0; //SendMessageTimeout(HWND_BROADCAST, WM_SETTINGCHANGE, NULL, (LPARAM)"Environment", SMTO_NOTIMEOUTIFNOTHUNG, INFINITE, &dwRet); //SendMessageTimeout(HWND_BROADCAST, WM_SETTINGCHANGE , NULL, (LPARAM)"Environment",SMTO_NORMAL, 1000, &dwRet); //SendMessageTimeout(HWND_BROADCAST, WM_SETTINGCHANGE , NULL, (LPARAM)"Environment", SMTO_NOTIMEOUTIFNOTHUNG,1000, &dwRet); ::SendMessage(HWND_BROADCAST,WM_SETTINGCHANGE,0,(LPARAM)TEXT("Environment")); //因为新增环境仅仅会 没有马上生效,所以须要发送 //WM_SETTINGCHANGE消息给全部窗体。刷新环境变量 return true; } return false; }
bool createReg(HKEY table,LPCTSTR key,LPCTSTR item,LPCTSTR values) { HKEY hAppKey = NULL; HKEY hSoftKey = NULL; if (RegOpenKeyEx(table, key, 0, KEY_WRITE|KEY_READ,&hSoftKey) == ERROR_SUCCESS) { if(RegSetValueEx(hSoftKey, item, NULL, REG_SZ, (LPBYTE)values, (lstrlen(values)+1) * sizeof(TCHAR)) == ERROR_SUCCESS) { if (hSoftKey != NULL) { RegCloseKey(hSoftKey); } if (hAppKey != NULL) { RegCloseKey(hAppKey); } return true; } } if (hSoftKey != NULL) { RegCloseKey(hSoftKey); } if (hAppKey != NULL) { RegCloseKey(hAppKey); } return false; }
std::string getInnoSetupPath() { //CString regPath = L"HKEY_CLASSES_ROOT\InnoSetupScriptFile\shell\open\command"; HKEY hKEY;//定义有关的hKEY,在查询结束时要关闭 LPCTSTR data_Set=L"InnoSetupScriptFile\\shell\\open\\command\\"; if(::RegOpenKeyEx(HKEY_CLASSES_ROOT,data_Set,0,KEY_READ,&hKEY) != ERROR_SUCCESS)//假设无法打开hKEY,则中止程序的运行 { return ""; } TCHAR res[MAX_PATH];//=new BYTE[MAX_PATH]; DWORD type_1=REG_SZ;//定义数据类型 DWORD cbData_1=MAX_PATH;//定义数据长度 if(RegQueryValueEx(hKEY,L"",NULL,&type_1,(LPBYTE)res,&cbData_1)!=ERROR_SUCCESS) { return ""; } ::RegCloseKey(hKEY); return CStringConvert::CString2string(res);//CString转string }
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