changing wallpaper c++ ive tried multiple ways

Question

string s = "C:\\ok.bmp";
SystemParametersInfo(SPI_SETDESKWALLPAPER, 0, (void*)s.c_str(), SPIF_SENDCHANGE);

This doesnt work ^^ and the ok.bmp is inside of the folder!

Answer 1

Most builds are Unicode nowadays, so try with a Unicode string:

wstring ws = L"C:\\ok.bmp";
SystemParametersInfo(SPI_SETDESKWALLPAPER, 0, ws.data(), SPIF_SENDCHANGE);

(by using std::wstring::data(), you don't need the cast).