CODE EXAMPLE FOR CPP

c++ write number to registry

int value = 0;

HKEY key;
RegOpenKeyEx(HKEY_LOCAL_MACHINE, L"SOFTWAREMyApp", 0, KEY_SET_VALUE, &key);
RegSetValueEx(key, L"myKey", NULL, REG_DWORD, (BYTE*)&value, sizeof(value));
RegCloseKey(key);