ctypes and PySide
- by Timothy Baldridge
I'm building an app with PySide, there's some image manipulation that needs to be done and using Python code for this is way too slow. Therefore I hacked out a .dll file that will do it for me. The function definition is as follows:
extern "C" {
QRectF get_image_slant(QImage *img, float slantangle, float offset) {
Now I can load this function in via ctypes. But I can't seem to get ctypes to accept a QImage. I tried calling it like this:
ext.get_image_slant(QImage(), 0, 0)
And the reply I get is:
File "<stdin>", line 1, in <module>
ctypes.ArgumentError: argument 1: <type 'exceptions.TypeError'>: Don't know how to convert parameter 1
I tired casting the QImage to a c_void_p and it doesn't like that either. From what I can tell QImage() in python should map exactly to a QImage * in C, but Python doesn't seem to understand that..
Is there any way to force the casting?
