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python: align setMouseCallback argument names with its keywords

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Same change as the 5.x port, to keep the two branches in sync.

The wrapper parses window_name, on_mouse and param, but the cv2.cpp help
text and the typing stub in api_refinement.py both say windowName and
onMouse, so the stub promises keywords the runtime rejects:

    >>> cv2.setMouseCallback(windowName="w", onMouse=cb)
    TypeError: function missing required argument 'window_name' (pos 1)

createTrackbar is left alone: it is registered METH_VARARGS, so its
arguments cannot be passed by keyword at all.
This commit is contained in:
Maidul Hasan Masum
2026-10-28 14:13:46 +00:00
parent 32f9288034
commit 77d9a8e69c
2 changed files with 5 additions and 5 deletions
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modules/python/src2/cv2.cpp
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@@ -115,7 +115,7 @@ static PyMethodDef special_methods[] = {
#ifdef HAVE_OPENCV_HIGHGUI
{"createTrackbar", (PyCFunction)pycvCreateTrackbar, METH_VARARGS, "createTrackbar(trackbarName, windowName, value, count, onChange) -> None"},
{"createButton", CV_PY_FN_WITH_KW(pycvCreateButton), "createButton(buttonName, onChange [, userData, buttonType, initialButtonState]) -> None"},
{"setMouseCallback", CV_PY_FN_WITH_KW(pycvSetMouseCallback), "setMouseCallback(windowName, onMouse [, param]) -> None"},
{"setMouseCallback", CV_PY_FN_WITH_KW(pycvSetMouseCallback), "setMouseCallback(window_name, on_mouse [, param]) -> None"},
#endif
#ifdef HAVE_OPENCV_DNN
{"dnn_registerLayer", CV_PY_FN_WITH_KW(pyopencv_cv_dnn_registerLayer), "registerLayer(type, class) -> None"},