Error with toULong() in Windows Qt 6.5.1
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Hi Everyone.
My first post, hopefully I am in the correct spot.
bool ok;
QString mStr = "FD17B9DD1653D9DF";
quint64 tmp = mStr.toULong(&ok,16);This works in Linux ... ok = true, and tmp is the 64bit number representation of the hex characters.
In windows 10 (x64) this fails - but if I use toULongLong it works.
I was under the impression toULong should attempt to convert to a 64 bit unsigned integer in both Ubuntu x86_64 and Windows 10 (x64) or am I wrong?
Ant
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Christian Ehrlicher Lifetime Qt Championreplied to Anthony_NZ on last edited by Christian Ehrlicher
@Anthony_NZ said in Error with toULong() in Windows Qt 6.5.1:
I was under the impression toULong should attempt to convert to a 64 bit unsigned integer in both Ubuntu x86_64 and Windows 10 (x64) or am I wrong?
You're wrong and could have proven it by yourself easily:
std::cout << "sizeof(ulong): " << sizeof(unsigned long) << "\n"; std::cout << "sizeof(ulonglong): " << sizeof(unsigned long long) << "\n";Linux 64 bit:
sizeof(ulong): 8
sizeof(ulonglong): 8Windows 64bit:
sizeof(ulong): 4
sizeof(ulonglong): 8 -
Newbie error - thank you. I didn't appreciate Microsoft Windows backwards compatiblity if LP64 and LLP64 as I normally exclusively live on linux systems.
Thank you!
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That's why Qt introduced the qt fixed integer types by themself. the toULong() stuff is an relict from old Qt times and imho should have been replaced a long time ago with functions returning fixed integer types (or the qt fixed integer types).
