[python-win32] LP_WNDCLASS vs pointer to WNDCLASS (original) (raw)

Henry Baxter henry.baxter at gmail.com
Thu Jan 17 02:47:41 CET 2008


Hello,

I keep getting this error, and I cannot figure out why. I have code that registers a window class that works, and code that does not. Both bits of code create a WNDCLASS, both use byref(thewndclassinstance), both make sure there is always a reference to the window class structure instance to ensure it is not destroyed. Here is the error.

ctypes.ArgumentError: argument 1: <type 'exceptions.TypeError'>: expected LP_WND CLASS instance instead of pointer to WNDCLASS

Why would byref sometimes create an LP_WNDCLASS, and sometimes a 'pointer to WNDCLASS'?

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