PyQt / Python 32-bit 64-bit mismatch causing dll loading error ("Not a valid Win32 application")



  • I'm running on a Win x64 machine, trying to use LoadLibrary to call a dll function, but I'm getting a '%1 is not a valid Win32 application' error.

    Not sure if the dll is 32-bit or 64-bit, or if __cdecl was used, or anything else about it..

    To make matters worse, I dont know if I have the 32-bit or 64 bit version of PyQt5 / Python3.4 installed. Is it even possible to mix & match a 64bit PyQt with a 32-bit Python, or vice versa?

    Is there a way to see what bit versions of PyQt and Python I'm running? I'm hoping that they match, and that switching to the other bit version will resolve the dll error.


  • Lifetime Qt Champion

    Hi,

    No you can't mix different architectures. You can use Dependency Walker to get more information about the dlls and executables


Log in to reply
 

Looks like your connection to Qt Forum was lost, please wait while we try to reconnect.