Writing string (REG_SZ) values to the registry in C++

Question

I\'ve got most of the code for writing a value to the windows registry, however when I change the path to a dummy key and value that I\'ve set up for testing it fails. My code

Answer 1

For UNICODE environment:

//Writing to registry
HKEY hKey;
LPCTSTR sk = TEXT("SOFTWARE\\Microsoft\\Windows");

LONG openRes = RegOpenKeyEx(HKEY_LOCAL_MACHINE, sk, 0, KEY_ALL_ACCESS, &hKey);

if (openRes == ERROR_SUCCESS) {
    printf("Success opening key.");
}
else {
    printf("Error opening key.");
}

LPCTSTR value = TEXT("Sample");
WCHAR path[80] = TEXT("C:\\samples\\app.exe");

LONG setRes = RegSetValueEx(hKey, value, 0, REG_SZ, (LPBYTE)path, sizeof(path));

if (setRes == ERROR_SUCCESS) {
    printf("Success writing to Registry.");
}
else {
    printf("Error writing to Registry.");
}

LONG closeOut = RegCloseKey(hKey);

if (closeOut == ERROR_SUCCESS) {
    printf("Success closing key.");
}
else {
    printf("Error closing key.");
}