Call Non-static method on static method

[Le_B]

all your threads run the worker function so why don't you subclass QThread and put the code from the worker function into the run function of your customThread
then in your loop do something like:
for (i = 0; i < threadCount; i++)
{
customThread* thread = new customThread(this);
threadList.append(thread);
thread->start();
}

[amleto]

it looks absurd.

Why are you using win api for threads in a Qt class when Qt provides cross platform support for threads?

CreateThread is not portable, and is more clunky and difficult to use than QThread. Why aren't you using QThread?