DLL/CPL Template

dll-cpl-template.c

// Create the project as DLL, compile it, and just rename it file.cpl
// Simply double click in the file to run

#include <Windows.h>

__declspec(dllexport) LONG CALLBACK CPlApplet(HWND hwndCpl, UINT msg, LPARAM lParam1, LPARAM lParam2) {
    MessageBoxA(NULL, "Test", "Caption", MB_OK);
    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);
        break;
    case DLL_THREAD_ATTACH:
        break;
    case DLL_THREAD_DETACH:
        break;
    case DLL_PROCESS_DETACH:
        break;
    }

    return TRUE;
}