Will loading a DLL dynamically reconcile its stderr to a main application? If so, then how…?

Question

I\'m writing a GUI application, using Qt, which links to a third-party DLL that sometimes sends error messages to stderr. I\'d like these error messages to be displayed in a

Answer 1

Does the DLL really write to stderr? Or does it write to GetStdHandle(STD_ERROR_HANDLE) ? The first maps to the second, initially. But with freopen() you merely change the mapping. Anything written to STD_ERROR_HANDLE will still go there.

To redirect everyones error output, you would need SetStdHandle.